./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 a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1ac00c9540bbc99a446c9cb6c02e180c3a0ad4fef3c182d14bafdc7ea871c54c --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 16:48:02,639 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 16:48:02,692 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-13 16:48:02,696 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 16:48:02,696 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 16:48:02,711 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 16:48:02,712 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 16:48:02,712 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 16:48:02,713 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 16:48:02,713 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 16:48:02,713 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 16:48:02,713 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 16:48:02,714 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 16:48:02,714 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 16:48:02,714 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 16:48:02,715 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 16:48:02,715 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 16:48:02,715 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 16:48:02,715 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 16:48:02,716 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 16:48:02,716 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 16:48:02,716 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 16:48:02,717 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 16:48:02,717 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 16:48:02,717 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 16:48:02,717 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-13 16:48:02,718 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 16:48:02,718 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 16:48:02,718 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 16:48:02,718 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 16:48:02,719 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 16:48:02,719 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 16:48:02,719 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 16:48:02,719 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 16:48:02,720 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:48:02,720 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 16:48:02,720 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 16:48:02,720 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 16:48:02,721 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 16:48:02,721 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 16:48:02,721 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 16:48:02,722 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 16:48:02,722 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 16:48:02,722 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 16:48:02,722 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ac00c9540bbc99a446c9cb6c02e180c3a0ad4fef3c182d14bafdc7ea871c54c [2024-10-13 16:48:02,889 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 16:48:02,916 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 16:48:02,919 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 16:48:02,919 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 16:48:02,920 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 16:48:02,921 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c [2024-10-13 16:48:04,113 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 16:48:04,242 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 16:48:04,242 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c [2024-10-13 16:48:04,251 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74d91c607/ecdccf93ea6b48f38204e58656ed49fb/FLAG4e4755908 [2024-10-13 16:48:04,667 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74d91c607/ecdccf93ea6b48f38204e58656ed49fb [2024-10-13 16:48:04,670 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 16:48:04,671 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 16:48:04,673 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 16:48:04,673 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 16:48:04,677 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 16:48:04,677 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:48:04" (1/1) ... [2024-10-13 16:48:04,679 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55829a1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:48:04, skipping insertion in model container [2024-10-13 16:48:04,679 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:48:04" (1/1) ... [2024-10-13 16:48:04,695 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 16:48:04,859 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:48:04,869 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 16:48:04,889 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:48:04,902 INFO L204 MainTranslator]: Completed translation [2024-10-13 16:48:04,902 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:48:04 WrapperNode [2024-10-13 16:48:04,903 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 16:48:04,903 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 16:48:04,904 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 16:48:04,904 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 16:48:04,908 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:48:04" (1/1) ... [2024-10-13 16:48:04,914 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:48:04" (1/1) ... [2024-10-13 16:48:04,927 INFO L138 Inliner]: procedures = 21, calls = 23, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 54 [2024-10-13 16:48:04,927 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 16:48:04,928 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 16:48:04,928 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 16:48:04,928 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 16:48:04,935 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:48:04" (1/1) ... [2024-10-13 16:48:04,936 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:48:04" (1/1) ... [2024-10-13 16:48:04,937 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:48:04" (1/1) ... [2024-10-13 16:48:04,957 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]. [2024-10-13 16:48:04,958 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:48:04" (1/1) ... [2024-10-13 16:48:04,958 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:48:04" (1/1) ... [2024-10-13 16:48:04,962 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:48:04" (1/1) ... [2024-10-13 16:48:04,964 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:48:04" (1/1) ... [2024-10-13 16:48:04,966 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:48:04" (1/1) ... [2024-10-13 16:48:04,967 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:48:04" (1/1) ... [2024-10-13 16:48:04,969 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 16:48:04,969 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 16:48:04,970 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 16:48:04,970 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 16:48:04,973 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:48:04" (1/1) ... [2024-10-13 16:48:04,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:48:04,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:48:05,006 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 16:48:05,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-13 16:48:05,046 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 16:48:05,046 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-13 16:48:05,046 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-13 16:48:05,046 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-13 16:48:05,047 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-13 16:48:05,047 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-13 16:48:05,047 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-13 16:48:05,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 16:48:05,047 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-13 16:48:05,048 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-13 16:48:05,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 16:48:05,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 16:48:05,050 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 16:48:05,145 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 16:48:05,151 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 16:48:05,372 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 16:48:05,372 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 16:48:05,507 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 16:48:05,509 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-13 16:48:05,509 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:48:05 BoogieIcfgContainer [2024-10-13 16:48:05,510 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 16:48:05,512 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 16:48:05,512 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 16:48:05,515 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 16:48:05,515 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 04:48:04" (1/3) ... [2024-10-13 16:48:05,516 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2130d13c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:48:05, skipping insertion in model container [2024-10-13 16:48:05,516 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:48:04" (2/3) ... [2024-10-13 16:48:05,516 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2130d13c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:48:05, skipping insertion in model container [2024-10-13 16:48:05,517 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:48:05" (3/3) ... [2024-10-13 16:48:05,517 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-3-extended.wvr.c [2024-10-13 16:48:05,529 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 16:48:05,530 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-10-13 16:48:05,530 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 16:48:05,580 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-13 16:48:05,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 50 transitions, 121 flow [2024-10-13 16:48:05,626 INFO L124 PetriNetUnfolderBase]: 6/47 cut-off events. [2024-10-13 16:48:05,627 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-13 16:48:05,629 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. [2024-10-13 16:48:05,629 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 50 transitions, 121 flow [2024-10-13 16:48:05,632 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 49 places, 45 transitions, 105 flow [2024-10-13 16:48:05,638 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 16:48:05,643 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;@447dd652, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 16:48:05,643 INFO L334 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2024-10-13 16:48:05,648 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 16:48:05,648 INFO L124 PetriNetUnfolderBase]: 1/15 cut-off events. [2024-10-13 16:48:05,648 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 16:48:05,649 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:48:05,649 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-13 16:48:05,649 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2024-10-13 16:48:05,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:48:05,654 INFO L85 PathProgramCache]: Analyzing trace with hash -362756467, now seen corresponding path program 1 times [2024-10-13 16:48:05,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:48:05,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323100557] [2024-10-13 16:48:05,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:48:05,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:48:05,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:48:05,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:48:05,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:48:05,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323100557] [2024-10-13 16:48:05,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323100557] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:48:05,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:48:05,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 16:48:05,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310777789] [2024-10-13 16:48:05,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:48:05,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 16:48:05,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:48:05,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 16:48:05,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 16:48:05,891 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-10-13 16:48:05,892 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) [2024-10-13 16:48:05,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:48:05,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-10-13 16:48:05,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:48:06,557 INFO L124 PetriNetUnfolderBase]: 6040/8174 cut-off events. [2024-10-13 16:48:06,558 INFO L125 PetriNetUnfolderBase]: For 256/256 co-relation queries the response was YES. [2024-10-13 16:48:06,571 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. [2024-10-13 16:48:06,612 INFO L140 encePairwiseOnDemand]: 31/50 looper letters, 42 selfloop transitions, 7 changer transitions 0/61 dead transitions. [2024-10-13 16:48:06,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 61 transitions, 247 flow [2024-10-13 16:48:06,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 16:48:06,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 16:48:06,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 106 transitions. [2024-10-13 16:48:06,622 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7066666666666667 [2024-10-13 16:48:06,623 INFO L175 Difference]: Start difference. First operand has 49 places, 45 transitions, 105 flow. Second operand 3 states and 106 transitions. [2024-10-13 16:48:06,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 61 transitions, 247 flow [2024-10-13 16:48:06,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 61 transitions, 231 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-13 16:48:06,632 INFO L231 Difference]: Finished difference. Result has 47 places, 51 transitions, 165 flow [2024-10-13 16:48:06,634 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} [2024-10-13 16:48:06,636 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, -2 predicate places. [2024-10-13 16:48:06,636 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 51 transitions, 165 flow [2024-10-13 16:48:06,636 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) [2024-10-13 16:48:06,637 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:48:06,637 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-10-13 16:48:06,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 16:48:06,637 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2024-10-13 16:48:06,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:48:06,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1456800313, now seen corresponding path program 1 times [2024-10-13 16:48:06,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:48:06,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081032557] [2024-10-13 16:48:06,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:48:06,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:48:06,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:48:06,733 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:48:06,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:48:06,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081032557] [2024-10-13 16:48:06,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081032557] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:48:06,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:48:06,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:48:06,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553556739] [2024-10-13 16:48:06,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:48:06,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 16:48:06,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:48:06,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 16:48:06,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 16:48:06,735 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-10-13 16:48:06,736 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) [2024-10-13 16:48:06,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:48:06,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-10-13 16:48:06,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:48:07,074 INFO L124 PetriNetUnfolderBase]: 4027/5730 cut-off events. [2024-10-13 16:48:07,078 INFO L125 PetriNetUnfolderBase]: For 1045/1045 co-relation queries the response was YES. [2024-10-13 16:48:07,082 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. [2024-10-13 16:48:07,112 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 35 selfloop transitions, 1 changer transitions 0/48 dead transitions. [2024-10-13 16:48:07,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 48 transitions, 225 flow [2024-10-13 16:48:07,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 16:48:07,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 16:48:07,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2024-10-13 16:48:07,115 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.52 [2024-10-13 16:48:07,115 INFO L175 Difference]: Start difference. First operand has 47 places, 51 transitions, 165 flow. Second operand 3 states and 78 transitions. [2024-10-13 16:48:07,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 48 transitions, 225 flow [2024-10-13 16:48:07,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 48 transitions, 218 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:48:07,118 INFO L231 Difference]: Finished difference. Result has 45 places, 48 transitions, 148 flow [2024-10-13 16:48:07,119 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} [2024-10-13 16:48:07,119 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, -4 predicate places. [2024-10-13 16:48:07,120 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 48 transitions, 148 flow [2024-10-13 16:48:07,120 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) [2024-10-13 16:48:07,120 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:48:07,120 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-10-13 16:48:07,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 16:48:07,120 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2024-10-13 16:48:07,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:48:07,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1456800312, now seen corresponding path program 1 times [2024-10-13 16:48:07,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:48:07,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409555373] [2024-10-13 16:48:07,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:48:07,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:48:07,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:48:07,207 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:48:07,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:48:07,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409555373] [2024-10-13 16:48:07,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409555373] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:48:07,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811385956] [2024-10-13 16:48:07,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:48:07,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:48:07,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:48:07,213 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:48:07,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 16:48:07,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:48:07,272 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 16:48:07,274 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:48:07,309 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:48:07,310 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:48:07,334 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:48:07,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811385956] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:48:07,335 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:48:07,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2024-10-13 16:48:07,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627125543] [2024-10-13 16:48:07,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:48:07,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 16:48:07,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:48:07,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 16:48:07,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-13 16:48:07,338 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-10-13 16:48:07,338 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) [2024-10-13 16:48:07,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:48:07,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-10-13 16:48:07,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:48:08,275 INFO L124 PetriNetUnfolderBase]: 9573/13756 cut-off events. [2024-10-13 16:48:08,276 INFO L125 PetriNetUnfolderBase]: For 2676/2676 co-relation queries the response was YES. [2024-10-13 16:48:08,285 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. [2024-10-13 16:48:08,335 INFO L140 encePairwiseOnDemand]: 34/50 looper letters, 99 selfloop transitions, 37 changer transitions 0/148 dead transitions. [2024-10-13 16:48:08,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 148 transitions, 721 flow [2024-10-13 16:48:08,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 16:48:08,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 16:48:08,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 263 transitions. [2024-10-13 16:48:08,337 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7514285714285714 [2024-10-13 16:48:08,337 INFO L175 Difference]: Start difference. First operand has 45 places, 48 transitions, 148 flow. Second operand 7 states and 263 transitions. [2024-10-13 16:48:08,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 148 transitions, 721 flow [2024-10-13 16:48:08,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 148 transitions, 720 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:48:08,339 INFO L231 Difference]: Finished difference. Result has 54 places, 78 transitions, 467 flow [2024-10-13 16:48:08,340 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} [2024-10-13 16:48:08,341 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 5 predicate places. [2024-10-13 16:48:08,341 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 78 transitions, 467 flow [2024-10-13 16:48:08,341 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) [2024-10-13 16:48:08,341 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:48:08,342 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:48:08,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-13 16:48:08,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:48:08,543 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2024-10-13 16:48:08,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:48:08,545 INFO L85 PathProgramCache]: Analyzing trace with hash 35275578, now seen corresponding path program 1 times [2024-10-13 16:48:08,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:48:08,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480951387] [2024-10-13 16:48:08,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:48:08,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:48:08,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:48:08,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:48:08,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:48:08,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480951387] [2024-10-13 16:48:08,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480951387] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:48:08,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:48:08,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:48:08,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721042147] [2024-10-13 16:48:08,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:48:08,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:48:08,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:48:08,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:48:08,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:48:08,602 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-10-13 16:48:08,602 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) [2024-10-13 16:48:08,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:48:08,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-10-13 16:48:08,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:48:09,497 INFO L124 PetriNetUnfolderBase]: 9871/14216 cut-off events. [2024-10-13 16:48:09,497 INFO L125 PetriNetUnfolderBase]: For 31685/31685 co-relation queries the response was YES. [2024-10-13 16:48:09,515 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. [2024-10-13 16:48:09,597 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 81 selfloop transitions, 19 changer transitions 0/112 dead transitions. [2024-10-13 16:48:09,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 112 transitions, 817 flow [2024-10-13 16:48:09,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:48:09,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:48:09,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 130 transitions. [2024-10-13 16:48:09,602 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-10-13 16:48:09,602 INFO L175 Difference]: Start difference. First operand has 54 places, 78 transitions, 467 flow. Second operand 4 states and 130 transitions. [2024-10-13 16:48:09,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 112 transitions, 817 flow [2024-10-13 16:48:09,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 112 transitions, 780 flow, removed 15 selfloop flow, removed 1 redundant places. [2024-10-13 16:48:09,656 INFO L231 Difference]: Finished difference. Result has 58 places, 90 transitions, 622 flow [2024-10-13 16:48:09,657 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} [2024-10-13 16:48:09,658 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 9 predicate places. [2024-10-13 16:48:09,659 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 90 transitions, 622 flow [2024-10-13 16:48:09,659 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) [2024-10-13 16:48:09,659 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:48:09,660 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:48:09,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 16:48:09,660 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2024-10-13 16:48:09,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:48:09,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1159067946, now seen corresponding path program 1 times [2024-10-13 16:48:09,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:48:09,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644957625] [2024-10-13 16:48:09,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:48:09,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:48:09,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:48:09,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:48:09,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:48:09,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644957625] [2024-10-13 16:48:09,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644957625] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:48:09,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:48:09,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:48:09,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413559405] [2024-10-13 16:48:09,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:48:09,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:48:09,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:48:09,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:48:09,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:48:09,724 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-10-13 16:48:09,725 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) [2024-10-13 16:48:09,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:48:09,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-10-13 16:48:09,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:48:10,739 INFO L124 PetriNetUnfolderBase]: 11519/16794 cut-off events. [2024-10-13 16:48:10,740 INFO L125 PetriNetUnfolderBase]: For 53567/53567 co-relation queries the response was YES. [2024-10-13 16:48:10,766 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. [2024-10-13 16:48:10,955 INFO L140 encePairwiseOnDemand]: 34/50 looper letters, 93 selfloop transitions, 28 changer transitions 0/133 dead transitions. [2024-10-13 16:48:10,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 133 transitions, 1087 flow [2024-10-13 16:48:10,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:48:10,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:48:10,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 142 transitions. [2024-10-13 16:48:10,956 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.71 [2024-10-13 16:48:10,956 INFO L175 Difference]: Start difference. First operand has 58 places, 90 transitions, 622 flow. Second operand 4 states and 142 transitions. [2024-10-13 16:48:10,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 133 transitions, 1087 flow [2024-10-13 16:48:11,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 133 transitions, 1047 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-10-13 16:48:11,024 INFO L231 Difference]: Finished difference. Result has 62 places, 111 transitions, 924 flow [2024-10-13 16:48:11,024 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} [2024-10-13 16:48:11,024 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 13 predicate places. [2024-10-13 16:48:11,025 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 111 transitions, 924 flow [2024-10-13 16:48:11,025 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) [2024-10-13 16:48:11,025 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:48:11,025 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:48:11,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 16:48:11,025 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2024-10-13 16:48:11,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:48:11,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1456800279, now seen corresponding path program 1 times [2024-10-13 16:48:11,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:48:11,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385041087] [2024-10-13 16:48:11,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:48:11,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:48:11,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:48:11,074 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:48:11,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:48:11,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385041087] [2024-10-13 16:48:11,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385041087] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:48:11,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950639333] [2024-10-13 16:48:11,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:48:11,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:48:11,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:48:11,077 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:48:11,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 16:48:11,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:48:11,117 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 16:48:11,117 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:48:11,134 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:48:11,134 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:48:11,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950639333] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:48:11,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:48:11,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2024-10-13 16:48:11,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57367826] [2024-10-13 16:48:11,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:48:11,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:48:11,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:48:11,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:48:11,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-13 16:48:11,137 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-10-13 16:48:11,137 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) [2024-10-13 16:48:11,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:48:11,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-10-13 16:48:11,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:48:12,726 INFO L124 PetriNetUnfolderBase]: 17271/25551 cut-off events. [2024-10-13 16:48:12,726 INFO L125 PetriNetUnfolderBase]: For 152971/152971 co-relation queries the response was YES. [2024-10-13 16:48:12,768 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. [2024-10-13 16:48:12,916 INFO L140 encePairwiseOnDemand]: 34/50 looper letters, 130 selfloop transitions, 40 changer transitions 0/182 dead transitions. [2024-10-13 16:48:12,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 182 transitions, 1815 flow [2024-10-13 16:48:12,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:48:12,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:48:12,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 146 transitions. [2024-10-13 16:48:12,917 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.73 [2024-10-13 16:48:12,917 INFO L175 Difference]: Start difference. First operand has 62 places, 111 transitions, 924 flow. Second operand 4 states and 146 transitions. [2024-10-13 16:48:12,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 182 transitions, 1815 flow [2024-10-13 16:48:13,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 182 transitions, 1749 flow, removed 33 selfloop flow, removed 0 redundant places. [2024-10-13 16:48:13,080 INFO L231 Difference]: Finished difference. Result has 67 places, 144 transitions, 1481 flow [2024-10-13 16:48:13,080 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} [2024-10-13 16:48:13,081 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 18 predicate places. [2024-10-13 16:48:13,081 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 144 transitions, 1481 flow [2024-10-13 16:48:13,081 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) [2024-10-13 16:48:13,081 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:48:13,081 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:48:13,093 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-13 16:48:13,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-13 16:48:13,282 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2024-10-13 16:48:13,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:48:13,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1428690364, now seen corresponding path program 1 times [2024-10-13 16:48:13,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:48:13,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304152974] [2024-10-13 16:48:13,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:48:13,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:48:13,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:48:13,342 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:48:13,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:48:13,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304152974] [2024-10-13 16:48:13,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304152974] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:48:13,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311031727] [2024-10-13 16:48:13,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:48:13,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:48:13,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:48:13,344 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:48:13,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 16:48:13,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:48:13,389 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:48:13,390 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:48:13,423 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:48:13,423 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:48:13,477 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:48:13,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [311031727] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:48:13,478 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:48:13,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 8 [2024-10-13 16:48:13,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188197388] [2024-10-13 16:48:13,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:48:13,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 16:48:13,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:48:13,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 16:48:13,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=47, Unknown=0, NotChecked=0, Total=90 [2024-10-13 16:48:13,479 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-10-13 16:48:13,480 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) [2024-10-13 16:48:13,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:48:13,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-10-13 16:48:13,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:48:23,011 INFO L124 PetriNetUnfolderBase]: 78250/116850 cut-off events. [2024-10-13 16:48:23,012 INFO L125 PetriNetUnfolderBase]: For 1155297/1155297 co-relation queries the response was YES. [2024-10-13 16:48:23,340 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. [2024-10-13 16:48:24,096 INFO L140 encePairwiseOnDemand]: 34/50 looper letters, 290 selfloop transitions, 366 changer transitions 0/668 dead transitions. [2024-10-13 16:48:24,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 668 transitions, 8437 flow [2024-10-13 16:48:24,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 16:48:24,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 16:48:24,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 382 transitions. [2024-10-13 16:48:24,098 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.764 [2024-10-13 16:48:24,098 INFO L175 Difference]: Start difference. First operand has 67 places, 144 transitions, 1481 flow. Second operand 10 states and 382 transitions. [2024-10-13 16:48:24,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 668 transitions, 8437 flow [2024-10-13 16:48:27,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 668 transitions, 7771 flow, removed 333 selfloop flow, removed 0 redundant places. [2024-10-13 16:48:27,441 INFO L231 Difference]: Finished difference. Result has 82 places, 504 transitions, 7224 flow [2024-10-13 16:48:27,441 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} [2024-10-13 16:48:27,441 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 33 predicate places. [2024-10-13 16:48:27,442 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 504 transitions, 7224 flow [2024-10-13 16:48:27,442 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) [2024-10-13 16:48:27,442 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:48:27,442 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:48:27,458 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-13 16:48:27,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:48:27,643 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2024-10-13 16:48:27,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:48:27,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1399317895, now seen corresponding path program 1 times [2024-10-13 16:48:27,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:48:27,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413628581] [2024-10-13 16:48:27,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:48:27,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:48:27,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:48:27,715 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:48:27,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:48:27,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413628581] [2024-10-13 16:48:27,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413628581] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:48:27,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586232233] [2024-10-13 16:48:27,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:48:27,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:48:27,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:48:27,719 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:48:27,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 16:48:27,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:48:27,764 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:48:27,765 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:48:27,789 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:48:27,789 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:48:27,839 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:48:27,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586232233] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:48:27,840 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:48:27,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-10-13 16:48:27,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520555103] [2024-10-13 16:48:27,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:48:27,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-13 16:48:27,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:48:27,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-13 16:48:27,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-10-13 16:48:27,841 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-10-13 16:48:27,842 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) [2024-10-13 16:48:27,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:48:27,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-10-13 16:48:27,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand