./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-4.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version fca748b1 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-4.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 287b872f435ea31dbbf77f267944e24b96122b5f745db0674c91555289f3b84c --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 22:00:54,209 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 22:00:54,294 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-20 22:00:54,304 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 22:00:54,304 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 22:00:54,339 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 22:00:54,340 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 22:00:54,340 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 22:00:54,341 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 22:00:54,342 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 22:00:54,343 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 22:00:54,343 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 22:00:54,344 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 22:00:54,346 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 22:00:54,347 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 22:00:54,347 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 22:00:54,348 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 22:00:54,348 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 22:00:54,348 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 22:00:54,349 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 22:00:54,349 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 22:00:54,351 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 22:00:54,351 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 22:00:54,351 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 22:00:54,352 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 22:00:54,352 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-20 22:00:54,352 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-20 22:00:54,353 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 22:00:54,353 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 22:00:54,353 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 22:00:54,354 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 22:00:54,354 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 22:00:54,354 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 22:00:54,355 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 22:00:54,355 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 22:00:54,355 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 22:00:54,356 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 22:00:54,356 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 22:00:54,356 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 22:00:54,356 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 22:00:54,357 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 22:00:54,357 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 22:00:54,358 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 22:00:54,358 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 22:00:54,358 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 287b872f435ea31dbbf77f267944e24b96122b5f745db0674c91555289f3b84c [2024-11-20 22:00:54,630 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 22:00:54,657 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 22:00:54,662 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 22:00:54,664 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 22:00:54,664 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 22:00:54,665 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-4.wvr.c [2024-11-20 22:00:56,154 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 22:00:56,350 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 22:00:56,352 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-4.wvr.c [2024-11-20 22:00:56,360 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03e0080dd/3800226c0d094a86aca043f4424e051f/FLAG1af016b0c [2024-11-20 22:00:56,374 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03e0080dd/3800226c0d094a86aca043f4424e051f [2024-11-20 22:00:56,377 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 22:00:56,379 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 22:00:56,380 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 22:00:56,381 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 22:00:56,386 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 22:00:56,387 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:00:56" (1/1) ... [2024-11-20 22:00:56,388 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51967966 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:00:56, skipping insertion in model container [2024-11-20 22:00:56,388 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:00:56" (1/1) ... [2024-11-20 22:00:56,414 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 22:00:56,632 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 22:00:56,646 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 22:00:56,664 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 22:00:56,680 INFO L204 MainTranslator]: Completed translation [2024-11-20 22:00:56,681 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:00:56 WrapperNode [2024-11-20 22:00:56,681 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 22:00:56,682 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 22:00:56,682 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 22:00:56,682 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 22:00:56,689 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:00:56" (1/1) ... [2024-11-20 22:00:56,697 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:00:56" (1/1) ... [2024-11-20 22:00:56,720 INFO L138 Inliner]: procedures = 19, calls = 11, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 63 [2024-11-20 22:00:56,720 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 22:00:56,721 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 22:00:56,721 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 22:00:56,721 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 22:00:56,734 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:00:56" (1/1) ... [2024-11-20 22:00:56,735 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:00:56" (1/1) ... [2024-11-20 22:00:56,737 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:00:56" (1/1) ... [2024-11-20 22:00:56,750 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]. [2024-11-20 22:00:56,751 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:00:56" (1/1) ... [2024-11-20 22:00:56,751 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:00:56" (1/1) ... [2024-11-20 22:00:56,755 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:00:56" (1/1) ... [2024-11-20 22:00:56,761 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:00:56" (1/1) ... [2024-11-20 22:00:56,763 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:00:56" (1/1) ... [2024-11-20 22:00:56,768 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:00:56" (1/1) ... [2024-11-20 22:00:56,770 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 22:00:56,771 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 22:00:56,772 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 22:00:56,772 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 22:00:56,773 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:00:56" (1/1) ... [2024-11-20 22:00:56,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 22:00:56,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:00:56,805 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) [2024-11-20 22:00:56,807 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 [2024-11-20 22:00:56,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 22:00:56,850 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-20 22:00:56,850 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-20 22:00:56,850 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-20 22:00:56,850 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-20 22:00:56,851 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-20 22:00:56,851 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-20 22:00:56,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 22:00:56,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 22:00:56,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 22:00:56,855 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-20 22:00:56,938 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 22:00:56,939 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 22:00:57,208 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-20 22:00:57,209 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 22:00:57,414 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 22:00:57,414 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-20 22:00:57,414 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:00:57 BoogieIcfgContainer [2024-11-20 22:00:57,415 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 22:00:57,419 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 22:00:57,419 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 22:00:57,424 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 22:00:57,424 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:00:56" (1/3) ... [2024-11-20 22:00:57,425 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@108a1ab8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:00:57, skipping insertion in model container [2024-11-20 22:00:57,425 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:00:56" (2/3) ... [2024-11-20 22:00:57,426 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@108a1ab8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:00:57, skipping insertion in model container [2024-11-20 22:00:57,427 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:00:57" (3/3) ... [2024-11-20 22:00:57,428 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-4.wvr.c [2024-11-20 22:00:57,442 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 22:00:57,443 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-20 22:00:57,443 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-20 22:00:57,507 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-20 22:00:57,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 47 transitions, 115 flow [2024-11-20 22:00:57,580 INFO L124 PetriNetUnfolderBase]: 4/44 cut-off events. [2024-11-20 22:00:57,581 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-20 22:00:57,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 44 events. 4/44 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 124 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2024-11-20 22:00:57,588 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 47 transitions, 115 flow [2024-11-20 22:00:57,593 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 41 transitions, 94 flow [2024-11-20 22:00:57,603 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 22:00:57,610 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;@76e374d9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 22:00:57,610 INFO L334 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2024-11-20 22:00:57,620 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 22:00:57,620 INFO L124 PetriNetUnfolderBase]: 0/18 cut-off events. [2024-11-20 22:00:57,620 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 22:00:57,621 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:00:57,621 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:00:57,622 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-20 22:00:57,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:00:57,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1898955499, now seen corresponding path program 1 times [2024-11-20 22:00:57,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:00:57,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621160979] [2024-11-20 22:00:57,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:00:57,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:00:57,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:00:57,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:00:57,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:00:57,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621160979] [2024-11-20 22:00:57,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621160979] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:00:57,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:00:57,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 22:00:57,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449787752] [2024-11-20 22:00:57,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:00:57,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 22:00:57,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:00:57,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 22:00:57,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 22:00:57,996 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-11-20 22:00:57,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2024-11-20 22:00:57,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:00:57,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-11-20 22:00:58,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:00:58,389 INFO L124 PetriNetUnfolderBase]: 1427/2351 cut-off events. [2024-11-20 22:00:58,390 INFO L125 PetriNetUnfolderBase]: For 92/92 co-relation queries the response was YES. [2024-11-20 22:00:58,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4507 conditions, 2351 events. 1427/2351 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 14678 event pairs, 366 based on Foata normal form. 0/1476 useless extension candidates. Maximal degree in co-relation 4309. Up to 1112 conditions per place. [2024-11-20 22:00:58,424 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 34 selfloop transitions, 9 changer transitions 0/58 dead transitions. [2024-11-20 22:00:58,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 58 transitions, 223 flow [2024-11-20 22:00:58,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 22:00:58,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 22:00:58,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2024-11-20 22:00:58,438 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7163120567375887 [2024-11-20 22:00:58,440 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 94 flow. Second operand 3 states and 101 transitions. [2024-11-20 22:00:58,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 58 transitions, 223 flow [2024-11-20 22:00:58,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 58 transitions, 213 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-20 22:00:58,453 INFO L231 Difference]: Finished difference. Result has 47 places, 47 transitions, 156 flow [2024-11-20 22:00:58,457 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=47, PETRI_TRANSITIONS=47} [2024-11-20 22:00:58,463 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 0 predicate places. [2024-11-20 22:00:58,465 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 47 transitions, 156 flow [2024-11-20 22:00:58,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2024-11-20 22:00:58,466 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:00:58,466 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:00:58,467 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 22:00:58,467 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-20 22:00:58,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:00:58,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1898955500, now seen corresponding path program 1 times [2024-11-20 22:00:58,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:00:58,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807955266] [2024-11-20 22:00:58,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:00:58,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:00:58,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:00:58,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:00:58,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:00:58,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807955266] [2024-11-20 22:00:58,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807955266] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:00:58,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:00:58,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 22:00:58,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578430412] [2024-11-20 22:00:58,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:00:58,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 22:00:58,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:00:58,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 22:00:58,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 22:00:58,606 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-11-20 22:00:58,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 47 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2024-11-20 22:00:58,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:00:58,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-11-20 22:00:58,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:00:58,985 INFO L124 PetriNetUnfolderBase]: 2294/3620 cut-off events. [2024-11-20 22:00:58,985 INFO L125 PetriNetUnfolderBase]: For 2327/2327 co-relation queries the response was YES. [2024-11-20 22:00:58,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8671 conditions, 3620 events. 2294/3620 cut-off events. For 2327/2327 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 20958 event pairs, 366 based on Foata normal form. 222/3345 useless extension candidates. Maximal degree in co-relation 5778. Up to 1903 conditions per place. [2024-11-20 22:00:59,014 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 42 selfloop transitions, 9 changer transitions 0/66 dead transitions. [2024-11-20 22:00:59,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 66 transitions, 321 flow [2024-11-20 22:00:59,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 22:00:59,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 22:00:59,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2024-11-20 22:00:59,018 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7163120567375887 [2024-11-20 22:00:59,019 INFO L175 Difference]: Start difference. First operand has 47 places, 47 transitions, 156 flow. Second operand 3 states and 101 transitions. [2024-11-20 22:00:59,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 66 transitions, 321 flow [2024-11-20 22:00:59,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 66 transitions, 299 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-20 22:00:59,036 INFO L231 Difference]: Finished difference. Result has 49 places, 53 transitions, 222 flow [2024-11-20 22:00:59,037 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=49, PETRI_TRANSITIONS=53} [2024-11-20 22:00:59,038 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 2 predicate places. [2024-11-20 22:00:59,038 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 53 transitions, 222 flow [2024-11-20 22:00:59,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2024-11-20 22:00:59,039 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:00:59,039 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:00:59,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 22:00:59,040 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-20 22:00:59,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:00:59,041 INFO L85 PathProgramCache]: Analyzing trace with hash 485749625, now seen corresponding path program 1 times [2024-11-20 22:00:59,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:00:59,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039895971] [2024-11-20 22:00:59,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:00:59,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:00:59,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:00:59,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:00:59,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:00:59,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039895971] [2024-11-20 22:00:59,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039895971] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:00:59,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:00:59,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 22:00:59,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498250763] [2024-11-20 22:00:59,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:00:59,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 22:00:59,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:00:59,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 22:00:59,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 22:00:59,173 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 47 [2024-11-20 22:00:59,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 53 transitions, 222 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2024-11-20 22:00:59,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:00:59,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 47 [2024-11-20 22:00:59,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:00:59,581 INFO L124 PetriNetUnfolderBase]: 2661/4080 cut-off events. [2024-11-20 22:00:59,581 INFO L125 PetriNetUnfolderBase]: For 3833/4463 co-relation queries the response was YES. [2024-11-20 22:00:59,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11335 conditions, 4080 events. 2661/4080 cut-off events. For 3833/4463 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 24067 event pairs, 747 based on Foata normal form. 0/3676 useless extension candidates. Maximal degree in co-relation 9334. Up to 1838 conditions per place. [2024-11-20 22:00:59,615 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 60 selfloop transitions, 3 changer transitions 0/76 dead transitions. [2024-11-20 22:00:59,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 76 transitions, 445 flow [2024-11-20 22:00:59,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 22:00:59,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 22:00:59,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2024-11-20 22:00:59,620 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-20 22:00:59,620 INFO L175 Difference]: Start difference. First operand has 49 places, 53 transitions, 222 flow. Second operand 3 states and 94 transitions. [2024-11-20 22:00:59,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 76 transitions, 445 flow [2024-11-20 22:00:59,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 76 transitions, 421 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-20 22:00:59,630 INFO L231 Difference]: Finished difference. Result has 51 places, 55 transitions, 226 flow [2024-11-20 22:00:59,631 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=226, PETRI_PLACES=51, PETRI_TRANSITIONS=55} [2024-11-20 22:00:59,632 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 4 predicate places. [2024-11-20 22:00:59,633 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 55 transitions, 226 flow [2024-11-20 22:00:59,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2024-11-20 22:00:59,633 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:00:59,633 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:00:59,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 22:00:59,634 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-20 22:00:59,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:00:59,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1524071286, now seen corresponding path program 1 times [2024-11-20 22:00:59,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:00:59,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143549080] [2024-11-20 22:00:59,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:00:59,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:00:59,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:00:59,737 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:00:59,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:00:59,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143549080] [2024-11-20 22:00:59,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143549080] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:00:59,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696790295] [2024-11-20 22:00:59,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:00:59,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:00:59,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:00:59,742 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) [2024-11-20 22:00:59,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 22:00:59,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:00:59,805 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-20 22:00:59,813 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:00:59,907 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:00:59,908 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:00:59,952 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:00:59,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696790295] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:00:59,953 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:00:59,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-20 22:00:59,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132389954] [2024-11-20 22:00:59,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:00:59,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 22:00:59,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:00:59,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 22:00:59,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-20 22:00:59,968 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-11-20 22:00:59,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 55 transitions, 226 flow. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 7 states have internal predecessors, (140), 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) [2024-11-20 22:00:59,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:00:59,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-11-20 22:00:59,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:01:00,774 INFO L124 PetriNetUnfolderBase]: 4322/7382 cut-off events. [2024-11-20 22:01:00,776 INFO L125 PetriNetUnfolderBase]: For 5320/5320 co-relation queries the response was YES. [2024-11-20 22:01:00,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19446 conditions, 7382 events. 4322/7382 cut-off events. For 5320/5320 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 49210 event pairs, 161 based on Foata normal form. 272/7110 useless extension candidates. Maximal degree in co-relation 17616. Up to 2053 conditions per place. [2024-11-20 22:01:00,844 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 86 selfloop transitions, 40 changer transitions 0/143 dead transitions. [2024-11-20 22:01:00,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 143 transitions, 801 flow [2024-11-20 22:01:00,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 22:01:00,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-20 22:01:00,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 248 transitions. [2024-11-20 22:01:00,847 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7537993920972644 [2024-11-20 22:01:00,848 INFO L175 Difference]: Start difference. First operand has 51 places, 55 transitions, 226 flow. Second operand 7 states and 248 transitions. [2024-11-20 22:01:00,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 143 transitions, 801 flow [2024-11-20 22:01:00,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 143 transitions, 795 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-20 22:01:00,855 INFO L231 Difference]: Finished difference. Result has 59 places, 91 transitions, 620 flow [2024-11-20 22:01:00,855 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=620, PETRI_PLACES=59, PETRI_TRANSITIONS=91} [2024-11-20 22:01:00,857 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 12 predicate places. [2024-11-20 22:01:00,857 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 91 transitions, 620 flow [2024-11-20 22:01:00,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 7 states have internal predecessors, (140), 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) [2024-11-20 22:01:00,857 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:01:00,857 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:01:00,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-20 22:01:01,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:01:01,058 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-20 22:01:01,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:01:01,059 INFO L85 PathProgramCache]: Analyzing trace with hash 994141205, now seen corresponding path program 1 times [2024-11-20 22:01:01,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:01:01,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249545540] [2024-11-20 22:01:01,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:01:01,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:01:01,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:01:01,148 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:01:01,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:01:01,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249545540] [2024-11-20 22:01:01,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249545540] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:01:01,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:01:01,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 22:01:01,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524870575] [2024-11-20 22:01:01,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:01:01,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 22:01:01,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:01:01,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 22:01:01,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 22:01:01,159 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 47 [2024-11-20 22:01:01,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 91 transitions, 620 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2024-11-20 22:01:01,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:01:01,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 47 [2024-11-20 22:01:01,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:01:02,047 INFO L124 PetriNetUnfolderBase]: 5708/8921 cut-off events. [2024-11-20 22:01:02,048 INFO L125 PetriNetUnfolderBase]: For 23783/23819 co-relation queries the response was YES. [2024-11-20 22:01:02,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30051 conditions, 8921 events. 5708/8921 cut-off events. For 23783/23819 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 58777 event pairs, 1597 based on Foata normal form. 0/8134 useless extension candidates. Maximal degree in co-relation 14092. Up to 4064 conditions per place. [2024-11-20 22:01:02,113 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 104 selfloop transitions, 3 changer transitions 0/122 dead transitions. [2024-11-20 22:01:02,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 122 transitions, 1057 flow [2024-11-20 22:01:02,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 22:01:02,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 22:01:02,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 92 transitions. [2024-11-20 22:01:02,115 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6524822695035462 [2024-11-20 22:01:02,116 INFO L175 Difference]: Start difference. First operand has 59 places, 91 transitions, 620 flow. Second operand 3 states and 92 transitions. [2024-11-20 22:01:02,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 122 transitions, 1057 flow [2024-11-20 22:01:02,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 122 transitions, 1045 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-11-20 22:01:02,154 INFO L231 Difference]: Finished difference. Result has 63 places, 88 transitions, 593 flow [2024-11-20 22:01:02,154 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=571, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=593, PETRI_PLACES=63, PETRI_TRANSITIONS=88} [2024-11-20 22:01:02,155 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 16 predicate places. [2024-11-20 22:01:02,156 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 88 transitions, 593 flow [2024-11-20 22:01:02,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2024-11-20 22:01:02,156 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:01:02,156 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:01:02,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-20 22:01:02,156 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-20 22:01:02,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:01:02,157 INFO L85 PathProgramCache]: Analyzing trace with hash 473343122, now seen corresponding path program 1 times [2024-11-20 22:01:02,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:01:02,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203549195] [2024-11-20 22:01:02,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:01:02,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:01:02,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:01:02,281 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 22:01:02,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:01:02,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203549195] [2024-11-20 22:01:02,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203549195] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:01:02,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52282047] [2024-11-20 22:01:02,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:01:02,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:01:02,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:01:02,285 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) [2024-11-20 22:01:02,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-20 22:01:02,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:01:02,343 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-20 22:01:02,344 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:01:02,428 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 22:01:02,428 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:01:02,492 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 22:01:02,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [52282047] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:01:02,492 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:01:02,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 8 [2024-11-20 22:01:02,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492619306] [2024-11-20 22:01:02,493 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:01:02,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-20 22:01:02,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:01:02,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-20 22:01:02,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-20 22:01:02,504 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-11-20 22:01:02,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 88 transitions, 593 flow. Second operand has 9 states, 9 states have (on average 21.333333333333332) internal successors, (192), 9 states have internal predecessors, (192), 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) [2024-11-20 22:01:02,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:01:02,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-11-20 22:01:02,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:01:03,740 INFO L124 PetriNetUnfolderBase]: 6006/11446 cut-off events. [2024-11-20 22:01:03,741 INFO L125 PetriNetUnfolderBase]: For 45761/45761 co-relation queries the response was YES. [2024-11-20 22:01:03,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37206 conditions, 11446 events. 6006/11446 cut-off events. For 45761/45761 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 92578 event pairs, 396 based on Foata normal form. 1644/12458 useless extension candidates. Maximal degree in co-relation 25392. Up to 3246 conditions per place. [2024-11-20 22:01:03,827 INFO L140 encePairwiseOnDemand]: 31/47 looper letters, 76 selfloop transitions, 50 changer transitions 0/145 dead transitions. [2024-11-20 22:01:03,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 145 transitions, 1176 flow [2024-11-20 22:01:03,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 22:01:03,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-20 22:01:03,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 233 transitions. [2024-11-20 22:01:03,829 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6196808510638298 [2024-11-20 22:01:03,829 INFO L175 Difference]: Start difference. First operand has 63 places, 88 transitions, 593 flow. Second operand 8 states and 233 transitions. [2024-11-20 22:01:03,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 145 transitions, 1176 flow [2024-11-20 22:01:03,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 145 transitions, 1170 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-20 22:01:03,871 INFO L231 Difference]: Finished difference. Result has 70 places, 108 transitions, 1038 flow [2024-11-20 22:01:03,871 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1038, PETRI_PLACES=70, PETRI_TRANSITIONS=108} [2024-11-20 22:01:03,872 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 23 predicate places. [2024-11-20 22:01:03,872 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 108 transitions, 1038 flow [2024-11-20 22:01:03,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 21.333333333333332) internal successors, (192), 9 states have internal predecessors, (192), 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) [2024-11-20 22:01:03,873 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:01:03,873 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:01:03,882 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-20 22:01:04,073 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 [2024-11-20 22:01:04,076 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-20 22:01:04,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:01:04,076 INFO L85 PathProgramCache]: Analyzing trace with hash 679446776, now seen corresponding path program 1 times [2024-11-20 22:01:04,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:01:04,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045942571] [2024-11-20 22:01:04,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:01:04,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:01:04,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:01:04,160 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:01:04,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:01:04,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045942571] [2024-11-20 22:01:04,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045942571] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:01:04,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585241396] [2024-11-20 22:01:04,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:01:04,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:01:04,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:01:04,164 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) [2024-11-20 22:01:04,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-20 22:01:04,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:01:04,230 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-20 22:01:04,231 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:01:04,290 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:01:04,290 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:01:04,356 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:01:04,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585241396] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:01:04,357 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:01:04,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-20 22:01:04,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003551444] [2024-11-20 22:01:04,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:01:04,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 22:01:04,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:01:04,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 22:01:04,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-11-20 22:01:04,370 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-11-20 22:01:04,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 108 transitions, 1038 flow. Second operand has 11 states, 11 states have (on average 20.181818181818183) internal successors, (222), 11 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:01:04,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:01:04,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-11-20 22:01:04,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:01:07,645 INFO L124 PetriNetUnfolderBase]: 16375/32435 cut-off events. [2024-11-20 22:01:07,646 INFO L125 PetriNetUnfolderBase]: For 246112/246112 co-relation queries the response was YES. [2024-11-20 22:01:07,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115452 conditions, 32435 events. 16375/32435 cut-off events. For 246112/246112 co-relation queries the response was YES. Maximal size of possible extension queue 1086. Compared 304445 event pairs, 347 based on Foata normal form. 4100/34173 useless extension candidates. Maximal degree in co-relation 105862. Up to 5242 conditions per place. [2024-11-20 22:01:08,016 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 182 selfloop transitions, 162 changer transitions 0/363 dead transitions. [2024-11-20 22:01:08,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 363 transitions, 3886 flow [2024-11-20 22:01:08,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 22:01:08,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-20 22:01:08,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 385 transitions. [2024-11-20 22:01:08,018 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7446808510638298 [2024-11-20 22:01:08,018 INFO L175 Difference]: Start difference. First operand has 70 places, 108 transitions, 1038 flow. Second operand 11 states and 385 transitions. [2024-11-20 22:01:08,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 363 transitions, 3886 flow [2024-11-20 22:01:08,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 363 transitions, 3695 flow, removed 93 selfloop flow, removed 3 redundant places. [2024-11-20 22:01:08,525 INFO L231 Difference]: Finished difference. Result has 85 places, 246 transitions, 3340 flow [2024-11-20 22:01:08,526 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=977, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3340, PETRI_PLACES=85, PETRI_TRANSITIONS=246} [2024-11-20 22:01:08,526 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 38 predicate places. [2024-11-20 22:01:08,527 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 246 transitions, 3340 flow [2024-11-20 22:01:08,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 20.181818181818183) internal successors, (222), 11 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:01:08,527 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:01:08,527 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:01:08,534 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-20 22:01:08,728 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 [2024-11-20 22:01:08,728 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-20 22:01:08,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:01:08,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1049049488, now seen corresponding path program 1 times [2024-11-20 22:01:08,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:01:08,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165726110] [2024-11-20 22:01:08,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:01:08,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:01:08,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:01:08,808 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 22:01:08,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:01:08,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165726110] [2024-11-20 22:01:08,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165726110] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:01:08,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533901085] [2024-11-20 22:01:08,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:01:08,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:01:08,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:01:08,815 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) [2024-11-20 22:01:08,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-20 22:01:08,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:01:08,869 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-20 22:01:08,870 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:01:08,914 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:01:08,914 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:01:08,955 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 22:01:08,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533901085] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:01:08,956 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:01:08,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 3] total 6 [2024-11-20 22:01:08,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60606466] [2024-11-20 22:01:08,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:01:08,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 22:01:08,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:01:08,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 22:01:08,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-11-20 22:01:08,970 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-11-20 22:01:08,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 246 transitions, 3340 flow. Second operand has 7 states, 7 states have (on average 21.142857142857142) internal successors, (148), 7 states have internal predecessors, (148), 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) [2024-11-20 22:01:08,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:01:08,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-11-20 22:01:08,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:01:18,784 INFO L124 PetriNetUnfolderBase]: 42967/83805 cut-off events. [2024-11-20 22:01:18,784 INFO L125 PetriNetUnfolderBase]: For 820456/820456 co-relation queries the response was YES. [2024-11-20 22:01:19,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 352315 conditions, 83805 events. 42967/83805 cut-off events. For 820456/820456 co-relation queries the response was YES. Maximal size of possible extension queue 2655. Compared 885391 event pairs, 1189 based on Foata normal form. 3574/80915 useless extension candidates. Maximal degree in co-relation 328460. Up to 20205 conditions per place. [2024-11-20 22:01:19,819 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 413 selfloop transitions, 320 changer transitions 0/752 dead transitions. [2024-11-20 22:01:19,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 752 transitions, 11783 flow [2024-11-20 22:01:19,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 22:01:19,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-20 22:01:19,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 236 transitions. [2024-11-20 22:01:19,821 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7173252279635258 [2024-11-20 22:01:19,822 INFO L175 Difference]: Start difference. First operand has 85 places, 246 transitions, 3340 flow. Second operand 7 states and 236 transitions. [2024-11-20 22:01:19,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 752 transitions, 11783 flow [2024-11-20 22:01:24,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 752 transitions, 11252 flow, removed 263 selfloop flow, removed 1 redundant places. [2024-11-20 22:01:24,801 INFO L231 Difference]: Finished difference. Result has 94 places, 541 transitions, 9411 flow [2024-11-20 22:01:24,802 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3191, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9411, PETRI_PLACES=94, PETRI_TRANSITIONS=541} [2024-11-20 22:01:24,802 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 47 predicate places. [2024-11-20 22:01:24,802 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 541 transitions, 9411 flow [2024-11-20 22:01:24,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.142857142857142) internal successors, (148), 7 states have internal predecessors, (148), 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) [2024-11-20 22:01:24,803 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:01:24,803 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:01:24,811 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-20 22:01:25,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:01:25,004 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-20 22:01:25,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:01:25,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1347085772, now seen corresponding path program 1 times [2024-11-20 22:01:25,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:01:25,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139817362] [2024-11-20 22:01:25,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:01:25,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:01:25,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:01:25,141 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 2 proven. 31 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 22:01:25,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:01:25,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139817362] [2024-11-20 22:01:25,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139817362] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:01:25,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655849722] [2024-11-20 22:01:25,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:01:25,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:01:25,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:01:25,145 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:01:25,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-20 22:01:25,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:01:25,202 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-20 22:01:25,206 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:01:25,276 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:01:25,277 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:01:25,369 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 2 proven. 31 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 22:01:25,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655849722] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:01:25,370 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:01:25,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5] total 10 [2024-11-20 22:01:25,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958927681] [2024-11-20 22:01:25,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:01:25,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 22:01:25,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:01:25,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 22:01:25,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=56, Unknown=0, NotChecked=0, Total=110 [2024-11-20 22:01:25,393 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-11-20 22:01:25,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 541 transitions, 9411 flow. Second operand has 11 states, 11 states have (on average 19.818181818181817) internal successors, (218), 11 states have internal predecessors, (218), 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) [2024-11-20 22:01:25,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:01:25,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-11-20 22:01:25,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:01:56,240 INFO L124 PetriNetUnfolderBase]: 101985/197403 cut-off events. [2024-11-20 22:01:56,241 INFO L125 PetriNetUnfolderBase]: For 2691499/2691499 co-relation queries the response was YES. [2024-11-20 22:01:57,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 900457 conditions, 197403 events. 101985/197403 cut-off events. For 2691499/2691499 co-relation queries the response was YES. Maximal size of possible extension queue 5866. Compared 2265435 event pairs, 2479 based on Foata normal form. 7230/189797 useless extension candidates. Maximal degree in co-relation 865984. Up to 34068 conditions per place. [2024-11-20 22:01:58,767 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 412 selfloop transitions, 1215 changer transitions 0/1646 dead transitions. [2024-11-20 22:01:58,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 1646 transitions, 30575 flow [2024-11-20 22:01:58,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 22:01:58,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-20 22:01:58,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 384 transitions. [2024-11-20 22:01:58,769 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7427466150870407 [2024-11-20 22:01:58,769 INFO L175 Difference]: Start difference. First operand has 94 places, 541 transitions, 9411 flow. Second operand 11 states and 384 transitions. [2024-11-20 22:01:58,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 1646 transitions, 30575 flow