./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-figure1-alt.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/popl20-figure1-alt.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 e66d74cf738883d82d8ab680e594f84e8947532df35a185c16ed9746f38b197c --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 22:02:36,984 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 22:02:37,057 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-20 22:02:37,061 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 22:02:37,062 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 22:02:37,097 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 22:02:37,099 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 22:02:37,099 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 22:02:37,100 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 22:02:37,101 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 22:02:37,102 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 22:02:37,102 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 22:02:37,103 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 22:02:37,103 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 22:02:37,106 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 22:02:37,106 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 22:02:37,106 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 22:02:37,106 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 22:02:37,119 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 22:02:37,119 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 22:02:37,119 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 22:02:37,120 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 22:02:37,120 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 22:02:37,120 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 22:02:37,120 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 22:02:37,121 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-20 22:02:37,121 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-20 22:02:37,121 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 22:02:37,121 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 22:02:37,121 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 22:02:37,122 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 22:02:37,122 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 22:02:37,122 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 22:02:37,122 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 22:02:37,123 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 22:02:37,123 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 22:02:37,123 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 22:02:37,125 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 22:02:37,125 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 22:02:37,125 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 22:02:37,125 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 22:02:37,125 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 22:02:37,125 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 22:02:37,126 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 22:02:37,126 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e66d74cf738883d82d8ab680e594f84e8947532df35a185c16ed9746f38b197c [2024-11-20 22:02:37,412 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 22:02:37,437 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 22:02:37,440 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 22:02:37,441 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 22:02:37,441 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 22:02:37,442 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c [2024-11-20 22:02:38,803 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 22:02:38,994 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 22:02:38,994 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c [2024-11-20 22:02:39,002 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46b41e187/c45747d89c5f4ebfb6a046cb81933771/FLAGfe8e41caa [2024-11-20 22:02:39,016 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46b41e187/c45747d89c5f4ebfb6a046cb81933771 [2024-11-20 22:02:39,018 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 22:02:39,020 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 22:02:39,021 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 22:02:39,021 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 22:02:39,025 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 22:02:39,026 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:02:39" (1/1) ... [2024-11-20 22:02:39,026 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1511bc1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:02:39, skipping insertion in model container [2024-11-20 22:02:39,026 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:02:39" (1/1) ... [2024-11-20 22:02:39,045 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 22:02:39,211 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 22:02:39,219 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 22:02:39,236 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 22:02:39,254 INFO L204 MainTranslator]: Completed translation [2024-11-20 22:02:39,254 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:02:39 WrapperNode [2024-11-20 22:02:39,254 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 22:02:39,255 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 22:02:39,256 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 22:02:39,256 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 22:02:39,262 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:02:39" (1/1) ... [2024-11-20 22:02:39,269 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:02:39" (1/1) ... [2024-11-20 22:02:39,283 INFO L138 Inliner]: procedures = 18, calls = 12, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 74 [2024-11-20 22:02:39,283 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 22:02:39,284 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 22:02:39,284 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 22:02:39,285 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 22:02:39,294 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:02:39" (1/1) ... [2024-11-20 22:02:39,294 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:02:39" (1/1) ... [2024-11-20 22:02:39,296 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:02:39" (1/1) ... [2024-11-20 22:02:39,312 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 22:02:39,313 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:02:39" (1/1) ... [2024-11-20 22:02:39,313 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:02:39" (1/1) ... [2024-11-20 22:02:39,316 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:02:39" (1/1) ... [2024-11-20 22:02:39,319 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:02:39" (1/1) ... [2024-11-20 22:02:39,320 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:02:39" (1/1) ... [2024-11-20 22:02:39,321 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:02:39" (1/1) ... [2024-11-20 22:02:39,323 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 22:02:39,324 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 22:02:39,324 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 22:02:39,324 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 22:02:39,325 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:02:39" (1/1) ... [2024-11-20 22:02:39,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 22:02:39,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:02:39,357 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 22:02:39,360 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 22:02:39,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 22:02:39,410 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-20 22:02:39,410 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-20 22:02:39,410 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-20 22:02:39,411 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-20 22:02:39,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 22:02:39,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 22:02:39,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 22:02:39,412 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 22:02:39,531 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 22:02:39,552 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 22:02:39,803 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-20 22:02:39,803 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 22:02:39,937 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 22:02:39,937 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-20 22:02:39,938 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:02:39 BoogieIcfgContainer [2024-11-20 22:02:39,938 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 22:02:39,940 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 22:02:39,941 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 22:02:39,944 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 22:02:39,945 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:02:39" (1/3) ... [2024-11-20 22:02:39,946 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59426aa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:02:39, skipping insertion in model container [2024-11-20 22:02:39,946 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:02:39" (2/3) ... [2024-11-20 22:02:39,946 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59426aa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:02:39, skipping insertion in model container [2024-11-20 22:02:39,946 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:02:39" (3/3) ... [2024-11-20 22:02:39,948 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-figure1-alt.wvr.c [2024-11-20 22:02:39,964 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 22:02:39,965 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-11-20 22:02:39,965 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-20 22:02:40,024 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-20 22:02:40,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 35 transitions, 84 flow [2024-11-20 22:02:40,076 INFO L124 PetriNetUnfolderBase]: 2/33 cut-off events. [2024-11-20 22:02:40,077 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-20 22:02:40,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 33 events. 2/33 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 72 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2024-11-20 22:02:40,080 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 35 transitions, 84 flow [2024-11-20 22:02:40,083 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 32 transitions, 76 flow [2024-11-20 22:02:40,098 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 22:02:40,106 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;@116f6d05, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 22:02:40,108 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2024-11-20 22:02:40,115 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 22:02:40,118 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-11-20 22:02:40,118 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-20 22:02:40,118 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:02:40,119 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-20 22:02:40,120 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-20 22:02:40,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:02:40,126 INFO L85 PathProgramCache]: Analyzing trace with hash 280540879, now seen corresponding path program 1 times [2024-11-20 22:02:40,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:02:40,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684438708] [2024-11-20 22:02:40,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:02:40,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:02:40,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:02:40,334 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 22:02:40,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:02:40,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684438708] [2024-11-20 22:02:40,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684438708] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:02:40,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:02:40,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-20 22:02:40,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014239813] [2024-11-20 22:02:40,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:02:40,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 22:02:40,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:02:40,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 22:02:40,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 22:02:40,384 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2024-11-20 22:02:40,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 22:02:40,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:02:40,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2024-11-20 22:02:40,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:02:40,547 INFO L124 PetriNetUnfolderBase]: 194/415 cut-off events. [2024-11-20 22:02:40,548 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-20 22:02:40,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 792 conditions, 415 events. 194/415 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1917 event pairs, 77 based on Foata normal form. 0/317 useless extension candidates. Maximal degree in co-relation 717. Up to 290 conditions per place. [2024-11-20 22:02:40,555 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 29 selfloop transitions, 2 changer transitions 0/41 dead transitions. [2024-11-20 22:02:40,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 41 transitions, 165 flow [2024-11-20 22:02:40,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 22:02:40,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 22:02:40,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2024-11-20 22:02:40,568 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-20 22:02:40,570 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 76 flow. Second operand 3 states and 70 transitions. [2024-11-20 22:02:40,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 41 transitions, 165 flow [2024-11-20 22:02:40,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 41 transitions, 151 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-20 22:02:40,578 INFO L231 Difference]: Finished difference. Result has 36 places, 33 transitions, 84 flow [2024-11-20 22:02:40,580 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=36, PETRI_TRANSITIONS=33} [2024-11-20 22:02:40,587 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, -1 predicate places. [2024-11-20 22:02:40,587 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 33 transitions, 84 flow [2024-11-20 22:02:40,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 22:02:40,588 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:02:40,588 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:02:40,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 22:02:40,589 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-20 22:02:40,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:02:40,590 INFO L85 PathProgramCache]: Analyzing trace with hash -983144206, now seen corresponding path program 1 times [2024-11-20 22:02:40,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:02:40,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332531805] [2024-11-20 22:02:40,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:02:40,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:02:40,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:02:40,726 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 22:02:40,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:02:40,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332531805] [2024-11-20 22:02:40,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332531805] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:02:40,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:02:40,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 22:02:40,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751191005] [2024-11-20 22:02:40,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:02:40,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 22:02:40,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:02:40,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 22:02:40,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 22:02:40,746 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2024-11-20 22:02:40,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 33 transitions, 84 flow. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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 22:02:40,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:02:40,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2024-11-20 22:02:40,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:02:40,958 INFO L124 PetriNetUnfolderBase]: 298/578 cut-off events. [2024-11-20 22:02:40,958 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2024-11-20 22:02:40,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1204 conditions, 578 events. 298/578 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2748 event pairs, 127 based on Foata normal form. 18/495 useless extension candidates. Maximal degree in co-relation 552. Up to 422 conditions per place. [2024-11-20 22:02:40,967 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 46 selfloop transitions, 4 changer transitions 0/58 dead transitions. [2024-11-20 22:02:40,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 58 transitions, 240 flow [2024-11-20 22:02:40,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 22:02:40,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 22:02:40,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 92 transitions. [2024-11-20 22:02:40,969 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6571428571428571 [2024-11-20 22:02:40,970 INFO L175 Difference]: Start difference. First operand has 36 places, 33 transitions, 84 flow. Second operand 4 states and 92 transitions. [2024-11-20 22:02:40,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 58 transitions, 240 flow [2024-11-20 22:02:40,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 58 transitions, 238 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 22:02:40,974 INFO L231 Difference]: Finished difference. Result has 40 places, 36 transitions, 111 flow [2024-11-20 22:02:40,974 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=111, PETRI_PLACES=40, PETRI_TRANSITIONS=36} [2024-11-20 22:02:40,975 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 3 predicate places. [2024-11-20 22:02:40,975 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 36 transitions, 111 flow [2024-11-20 22:02:40,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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 22:02:40,976 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:02:40,976 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:02:40,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 22:02:40,976 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-20 22:02:40,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:02:40,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1481484995, now seen corresponding path program 1 times [2024-11-20 22:02:40,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:02:40,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798400934] [2024-11-20 22:02:40,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:02:40,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:02:41,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:02:41,067 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 22:02:41,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:02:41,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798400934] [2024-11-20 22:02:41,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798400934] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:02:41,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:02:41,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 22:02:41,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625378863] [2024-11-20 22:02:41,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:02:41,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 22:02:41,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:02:41,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 22:02:41,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 22:02:41,070 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2024-11-20 22:02:41,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 36 transitions, 111 flow. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 22:02:41,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:02:41,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2024-11-20 22:02:41,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:02:41,172 INFO L124 PetriNetUnfolderBase]: 221/494 cut-off events. [2024-11-20 22:02:41,172 INFO L125 PetriNetUnfolderBase]: For 163/167 co-relation queries the response was YES. [2024-11-20 22:02:41,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1138 conditions, 494 events. 221/494 cut-off events. For 163/167 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2460 event pairs, 133 based on Foata normal form. 0/427 useless extension candidates. Maximal degree in co-relation 355. Up to 286 conditions per place. [2024-11-20 22:02:41,176 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 38 selfloop transitions, 3 changer transitions 0/51 dead transitions. [2024-11-20 22:02:41,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 51 transitions, 244 flow [2024-11-20 22:02:41,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 22:02:41,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 22:02:41,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2024-11-20 22:02:41,179 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6952380952380952 [2024-11-20 22:02:41,179 INFO L175 Difference]: Start difference. First operand has 40 places, 36 transitions, 111 flow. Second operand 3 states and 73 transitions. [2024-11-20 22:02:41,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 51 transitions, 244 flow [2024-11-20 22:02:41,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 51 transitions, 240 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 22:02:41,181 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 132 flow [2024-11-20 22:02:41,181 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=42, PETRI_TRANSITIONS=37} [2024-11-20 22:02:41,182 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 5 predicate places. [2024-11-20 22:02:41,182 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 132 flow [2024-11-20 22:02:41,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 22:02:41,184 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:02:41,184 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:02:41,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 22:02:41,185 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-20 22:02:41,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:02:41,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1487535774, now seen corresponding path program 1 times [2024-11-20 22:02:41,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:02:41,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956508404] [2024-11-20 22:02:41,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:02:41,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:02:41,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:02:41,280 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 22:02:41,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:02:41,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956508404] [2024-11-20 22:02:41,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956508404] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:02:41,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:02:41,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 22:02:41,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231576687] [2024-11-20 22:02:41,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:02:41,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 22:02:41,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:02:41,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 22:02:41,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-20 22:02:41,284 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2024-11-20 22:02:41,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 132 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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 22:02:41,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:02:41,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2024-11-20 22:02:41,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:02:41,397 INFO L124 PetriNetUnfolderBase]: 272/592 cut-off events. [2024-11-20 22:02:41,397 INFO L125 PetriNetUnfolderBase]: For 476/478 co-relation queries the response was YES. [2024-11-20 22:02:41,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1480 conditions, 592 events. 272/592 cut-off events. For 476/478 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2751 event pairs, 56 based on Foata normal form. 25/601 useless extension candidates. Maximal degree in co-relation 680. Up to 237 conditions per place. [2024-11-20 22:02:41,403 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 44 selfloop transitions, 4 changer transitions 0/58 dead transitions. [2024-11-20 22:02:41,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 58 transitions, 294 flow [2024-11-20 22:02:41,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 22:02:41,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 22:02:41,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions. [2024-11-20 22:02:41,404 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6857142857142857 [2024-11-20 22:02:41,404 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 132 flow. Second operand 4 states and 96 transitions. [2024-11-20 22:02:41,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 58 transitions, 294 flow [2024-11-20 22:02:41,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 58 transitions, 284 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-20 22:02:41,423 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 160 flow [2024-11-20 22:02:41,423 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=160, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2024-11-20 22:02:41,428 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 8 predicate places. [2024-11-20 22:02:41,429 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 160 flow [2024-11-20 22:02:41,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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 22:02:41,429 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:02:41,429 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:02:41,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-20 22:02:41,429 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-20 22:02:41,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:02:41,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1466742970, now seen corresponding path program 1 times [2024-11-20 22:02:41,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:02:41,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89640903] [2024-11-20 22:02:41,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:02:41,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:02:41,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:02:41,587 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:02:41,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:02:41,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89640903] [2024-11-20 22:02:41,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89640903] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:02:41,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739199251] [2024-11-20 22:02:41,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:02:41,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:02:41,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:02:41,593 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 22:02:41,596 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 22:02:41,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:02:41,648 INFO L255 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-20 22:02:41,653 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:02:41,699 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 22:02:41,699 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 22:02:41,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [739199251] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:02:41,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 22:02:41,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2024-11-20 22:02:41,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081940162] [2024-11-20 22:02:41,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:02:41,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 22:02:41,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:02:41,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 22:02:41,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-20 22:02:41,701 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2024-11-20 22:02:41,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 22:02:41,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:02:41,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2024-11-20 22:02:41,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:02:41,768 INFO L124 PetriNetUnfolderBase]: 242/547 cut-off events. [2024-11-20 22:02:41,768 INFO L125 PetriNetUnfolderBase]: For 621/623 co-relation queries the response was YES. [2024-11-20 22:02:41,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1362 conditions, 547 events. 242/547 cut-off events. For 621/623 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2609 event pairs, 202 based on Foata normal form. 24/550 useless extension candidates. Maximal degree in co-relation 627. Up to 430 conditions per place. [2024-11-20 22:02:41,773 INFO L140 encePairwiseOnDemand]: 33/35 looper letters, 26 selfloop transitions, 1 changer transitions 0/37 dead transitions. [2024-11-20 22:02:41,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 37 transitions, 196 flow [2024-11-20 22:02:41,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 22:02:41,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 22:02:41,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 57 transitions. [2024-11-20 22:02:41,775 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5428571428571428 [2024-11-20 22:02:41,775 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 160 flow. Second operand 3 states and 57 transitions. [2024-11-20 22:02:41,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 37 transitions, 196 flow [2024-11-20 22:02:41,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 37 transitions, 190 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-20 22:02:41,779 INFO L231 Difference]: Finished difference. Result has 43 places, 37 transitions, 138 flow [2024-11-20 22:02:41,779 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=43, PETRI_TRANSITIONS=37} [2024-11-20 22:02:41,780 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 6 predicate places. [2024-11-20 22:02:41,780 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 37 transitions, 138 flow [2024-11-20 22:02:41,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 22:02:41,781 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:02:41,781 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:02:41,791 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-20 22:02:41,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:02:41,982 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-20 22:02:41,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:02:41,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1286664241, now seen corresponding path program 1 times [2024-11-20 22:02:41,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:02:41,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461592871] [2024-11-20 22:02:41,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:02:41,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:02:41,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:02:42,024 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 22:02:42,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:02:42,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461592871] [2024-11-20 22:02:42,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461592871] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:02:42,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:02:42,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-20 22:02:42,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059463222] [2024-11-20 22:02:42,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:02:42,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 22:02:42,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:02:42,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 22:02:42,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 22:02:42,035 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2024-11-20 22:02:42,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 37 transitions, 138 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 22:02:42,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:02:42,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2024-11-20 22:02:42,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:02:42,104 INFO L124 PetriNetUnfolderBase]: 242/544 cut-off events. [2024-11-20 22:02:42,104 INFO L125 PetriNetUnfolderBase]: For 371/373 co-relation queries the response was YES. [2024-11-20 22:02:42,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1347 conditions, 544 events. 242/544 cut-off events. For 371/373 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2585 event pairs, 202 based on Foata normal form. 3/529 useless extension candidates. Maximal degree in co-relation 1335. Up to 433 conditions per place. [2024-11-20 22:02:42,108 INFO L140 encePairwiseOnDemand]: 33/35 looper letters, 27 selfloop transitions, 1 changer transitions 0/36 dead transitions. [2024-11-20 22:02:42,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 36 transitions, 192 flow [2024-11-20 22:02:42,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 22:02:42,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 22:02:42,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2024-11-20 22:02:42,110 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49523809523809526 [2024-11-20 22:02:42,110 INFO L175 Difference]: Start difference. First operand has 43 places, 37 transitions, 138 flow. Second operand 3 states and 52 transitions. [2024-11-20 22:02:42,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 36 transitions, 192 flow [2024-11-20 22:02:42,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 36 transitions, 191 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 22:02:42,113 INFO L231 Difference]: Finished difference. Result has 43 places, 36 transitions, 137 flow [2024-11-20 22:02:42,113 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=137, PETRI_PLACES=43, PETRI_TRANSITIONS=36} [2024-11-20 22:02:42,114 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 6 predicate places. [2024-11-20 22:02:42,115 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 36 transitions, 137 flow [2024-11-20 22:02:42,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 22:02:42,116 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:02:42,116 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:02:42,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-20 22:02:42,116 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-20 22:02:42,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:02:42,116 INFO L85 PathProgramCache]: Analyzing trace with hash 702240868, now seen corresponding path program 1 times [2024-11-20 22:02:42,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:02:42,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219547985] [2024-11-20 22:02:42,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:02:42,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:02:42,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:02:42,157 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 22:02:42,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:02:42,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219547985] [2024-11-20 22:02:42,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219547985] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:02:42,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:02:42,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 22:02:42,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311360821] [2024-11-20 22:02:42,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:02:42,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 22:02:42,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:02:42,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 22:02:42,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 22:02:42,166 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2024-11-20 22:02:42,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 36 transitions, 137 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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 22:02:42,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:02:42,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2024-11-20 22:02:42,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:02:42,348 INFO L124 PetriNetUnfolderBase]: 456/882 cut-off events. [2024-11-20 22:02:42,348 INFO L125 PetriNetUnfolderBase]: For 603/639 co-relation queries the response was YES. [2024-11-20 22:02:42,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2279 conditions, 882 events. 456/882 cut-off events. For 603/639 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 4134 event pairs, 246 based on Foata normal form. 22/881 useless extension candidates. Maximal degree in co-relation 2266. Up to 540 conditions per place. [2024-11-20 22:02:42,353 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 56 selfloop transitions, 4 changer transitions 0/67 dead transitions. [2024-11-20 22:02:42,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 67 transitions, 399 flow [2024-11-20 22:02:42,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 22:02:42,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 22:02:42,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 85 transitions. [2024-11-20 22:02:42,355 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6071428571428571 [2024-11-20 22:02:42,355 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 137 flow. Second operand 4 states and 85 transitions. [2024-11-20 22:02:42,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 67 transitions, 399 flow [2024-11-20 22:02:42,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 67 transitions, 398 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 22:02:42,358 INFO L231 Difference]: Finished difference. Result has 47 places, 39 transitions, 165 flow [2024-11-20 22:02:42,359 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=165, PETRI_PLACES=47, PETRI_TRANSITIONS=39} [2024-11-20 22:02:42,360 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 10 predicate places. [2024-11-20 22:02:42,360 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 39 transitions, 165 flow [2024-11-20 22:02:42,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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 22:02:42,360 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:02:42,360 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-20 22:02:42,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-20 22:02:42,361 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-20 22:02:42,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:02:42,361 INFO L85 PathProgramCache]: Analyzing trace with hash -790710359, now seen corresponding path program 1 times [2024-11-20 22:02:42,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:02:42,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442340328] [2024-11-20 22:02:42,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:02:42,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:02:42,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:02:42,412 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:02:42,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:02:42,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442340328] [2024-11-20 22:02:42,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442340328] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:02:42,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373151646] [2024-11-20 22:02:42,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:02:42,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:02:42,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:02:42,415 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 22:02:42,416 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 22:02:42,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:02:42,455 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-20 22:02:42,455 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:02:42,486 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:02:42,486 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 22:02:42,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [373151646] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:02:42,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 22:02:42,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-20 22:02:42,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693705428] [2024-11-20 22:02:42,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:02:42,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 22:02:42,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:02:42,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 22:02:42,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-20 22:02:42,497 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2024-11-20 22:02:42,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 39 transitions, 165 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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 22:02:42,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:02:42,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2024-11-20 22:02:42,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:02:42,696 INFO L124 PetriNetUnfolderBase]: 436/865 cut-off events. [2024-11-20 22:02:42,696 INFO L125 PetriNetUnfolderBase]: For 821/857 co-relation queries the response was YES. [2024-11-20 22:02:42,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2460 conditions, 865 events. 436/865 cut-off events. For 821/857 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 4045 event pairs, 59 based on Foata normal form. 26/865 useless extension candidates. Maximal degree in co-relation 2445. Up to 294 conditions per place. [2024-11-20 22:02:42,702 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 74 selfloop transitions, 7 changer transitions 0/88 dead transitions. [2024-11-20 22:02:42,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 88 transitions, 531 flow [2024-11-20 22:02:42,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 22:02:42,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 22:02:42,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 124 transitions. [2024-11-20 22:02:42,703 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5904761904761905 [2024-11-20 22:02:42,704 INFO L175 Difference]: Start difference. First operand has 47 places, 39 transitions, 165 flow. Second operand 6 states and 124 transitions. [2024-11-20 22:02:42,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 88 transitions, 531 flow [2024-11-20 22:02:42,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 88 transitions, 516 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 22:02:42,706 INFO L231 Difference]: Finished difference. Result has 50 places, 38 transitions, 172 flow [2024-11-20 22:02:42,707 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=172, PETRI_PLACES=50, PETRI_TRANSITIONS=38} [2024-11-20 22:02:42,707 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 13 predicate places. [2024-11-20 22:02:42,707 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 38 transitions, 172 flow [2024-11-20 22:02:42,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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 22:02:42,708 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:02:42,708 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:02:42,716 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 22:02:42,908 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,SelfDestructingSolverStorable7 [2024-11-20 22:02:42,909 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-20 22:02:42,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:02:42,909 INFO L85 PathProgramCache]: Analyzing trace with hash 173664025, now seen corresponding path program 1 times [2024-11-20 22:02:42,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:02:42,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580763912] [2024-11-20 22:02:42,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:02:42,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:02:42,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:02:42,949 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 22:02:42,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:02:42,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580763912] [2024-11-20 22:02:42,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580763912] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:02:42,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:02:42,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-20 22:02:42,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398804052] [2024-11-20 22:02:42,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:02:42,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 22:02:42,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:02:42,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 22:02:42,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 22:02:42,960 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2024-11-20 22:02:42,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 38 transitions, 172 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 22:02:42,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:02:42,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2024-11-20 22:02:42,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:02:43,046 INFO L124 PetriNetUnfolderBase]: 396/839 cut-off events. [2024-11-20 22:02:43,047 INFO L125 PetriNetUnfolderBase]: For 995/995 co-relation queries the response was YES. [2024-11-20 22:02:43,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2472 conditions, 839 events. 396/839 cut-off events. For 995/995 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 4068 event pairs, 324 based on Foata normal form. 3/839 useless extension candidates. Maximal degree in co-relation 2457. Up to 679 conditions per place. [2024-11-20 22:02:43,053 INFO L140 encePairwiseOnDemand]: 33/35 looper letters, 27 selfloop transitions, 1 changer transitions 3/37 dead transitions. [2024-11-20 22:02:43,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 37 transitions, 230 flow [2024-11-20 22:02:43,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 22:02:43,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 22:02:43,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 51 transitions. [2024-11-20 22:02:43,054 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4857142857142857 [2024-11-20 22:02:43,054 INFO L175 Difference]: Start difference. First operand has 50 places, 38 transitions, 172 flow. Second operand 3 states and 51 transitions. [2024-11-20 22:02:43,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 37 transitions, 230 flow [2024-11-20 22:02:43,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 37 transitions, 215 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-11-20 22:02:43,058 INFO L231 Difference]: Finished difference. Result has 47 places, 34 transitions, 149 flow [2024-11-20 22:02:43,059 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=149, PETRI_PLACES=47, PETRI_TRANSITIONS=34} [2024-11-20 22:02:43,060 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 10 predicate places. [2024-11-20 22:02:43,060 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 34 transitions, 149 flow [2024-11-20 22:02:43,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 22:02:43,060 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:02:43,060 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-20 22:02:43,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-20 22:02:43,060 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-20 22:02:43,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:02:43,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1257782956, now seen corresponding path program 1 times [2024-11-20 22:02:43,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:02:43,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581266139] [2024-11-20 22:02:43,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:02:43,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:02:43,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:02:43,126 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:02:43,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:02:43,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581266139] [2024-11-20 22:02:43,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581266139] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:02:43,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418974907] [2024-11-20 22:02:43,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:02:43,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:02:43,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:02:43,129 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 22:02:43,131 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 22:02:43,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:02:43,170 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-20 22:02:43,171 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:02:43,206 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:02:43,206 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:02:43,263 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:02:43,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418974907] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:02:43,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:02:43,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-20 22:02:43,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418987099] [2024-11-20 22:02:43,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:02:43,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-20 22:02:43,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:02:43,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-20 22:02:43,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-20 22:02:43,291 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2024-11-20 22:02:43,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 34 transitions, 149 flow. Second operand has 12 states, 12 states have (on average 11.666666666666666) internal successors, (140), 12 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 22:02:43,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:02:43,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2024-11-20 22:02:43,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:02:43,687 INFO L124 PetriNetUnfolderBase]: 889/1725 cut-off events. [2024-11-20 22:02:43,687 INFO L125 PetriNetUnfolderBase]: For 1952/2028 co-relation queries the response was YES. [2024-11-20 22:02:43,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4817 conditions, 1725 events. 889/1725 cut-off events. For 1952/2028 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 8588 event pairs, 136 based on Foata normal form. 78/1801 useless extension candidates. Maximal degree in co-relation 4802. Up to 606 conditions per place. [2024-11-20 22:02:43,701 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 136 selfloop transitions, 12 changer transitions 0/153 dead transitions. [2024-11-20 22:02:43,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 153 transitions, 940 flow [2024-11-20 22:02:43,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 22:02:43,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-20 22:02:43,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 218 transitions. [2024-11-20 22:02:43,703 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6228571428571429 [2024-11-20 22:02:43,703 INFO L175 Difference]: Start difference. First operand has 47 places, 34 transitions, 149 flow. Second operand 10 states and 218 transitions. [2024-11-20 22:02:43,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 153 transitions, 940 flow [2024-11-20 22:02:43,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 153 transitions, 939 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 22:02:43,709 INFO L231 Difference]: Finished difference. Result has 56 places, 43 transitions, 229 flow [2024-11-20 22:02:43,710 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=229, PETRI_PLACES=56, PETRI_TRANSITIONS=43} [2024-11-20 22:02:43,711 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 19 predicate places. [2024-11-20 22:02:43,711 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 43 transitions, 229 flow [2024-11-20 22:02:43,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.666666666666666) internal successors, (140), 12 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 22:02:43,713 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:02:43,713 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:02:43,722 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 22:02:43,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:02:43,913 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-20 22:02:43,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:02:43,914 INFO L85 PathProgramCache]: Analyzing trace with hash 914959387, now seen corresponding path program 1 times [2024-11-20 22:02:43,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:02:43,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860214861] [2024-11-20 22:02:43,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:02:43,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:02:43,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:02:43,972 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:02:43,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:02:43,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860214861] [2024-11-20 22:02:43,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860214861] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:02:43,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085792064] [2024-11-20 22:02:43,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:02:43,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:02:43,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:02:43,976 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 22:02:43,977 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 22:02:44,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:02:44,020 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 22:02:44,021 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:02:44,054 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 22:02:44,054 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 22:02:44,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085792064] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:02:44,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 22:02:44,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2024-11-20 22:02:44,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496480088] [2024-11-20 22:02:44,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:02:44,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 22:02:44,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:02:44,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 22:02:44,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-20 22:02:44,056 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2024-11-20 22:02:44,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 43 transitions, 229 flow. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 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 22:02:44,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:02:44,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2024-11-20 22:02:44,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:02:44,199 INFO L124 PetriNetUnfolderBase]: 749/1525 cut-off events. [2024-11-20 22:02:44,199 INFO L125 PetriNetUnfolderBase]: For 2452/2484 co-relation queries the response was YES. [2024-11-20 22:02:44,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4673 conditions, 1525 events. 749/1525 cut-off events. For 2452/2484 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 7747 event pairs, 585 based on Foata normal form. 62/1582 useless extension candidates. Maximal degree in co-relation 4655. Up to 1240 conditions per place. [2024-11-20 22:02:44,208 INFO L140 encePairwiseOnDemand]: 33/35 looper letters, 35 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2024-11-20 22:02:44,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 42 transitions, 297 flow [2024-11-20 22:02:44,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 22:02:44,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 22:02:44,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 55 transitions. [2024-11-20 22:02:44,209 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-11-20 22:02:44,209 INFO L175 Difference]: Start difference. First operand has 56 places, 43 transitions, 229 flow. Second operand 3 states and 55 transitions. [2024-11-20 22:02:44,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 42 transitions, 297 flow [2024-11-20 22:02:44,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 42 transitions, 287 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-20 22:02:44,215 INFO L231 Difference]: Finished difference. Result has 55 places, 42 transitions, 217 flow [2024-11-20 22:02:44,215 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=217, PETRI_PLACES=55, PETRI_TRANSITIONS=42} [2024-11-20 22:02:44,216 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 18 predicate places. [2024-11-20 22:02:44,216 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 42 transitions, 217 flow [2024-11-20 22:02:44,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 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 22:02:44,216 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:02:44,216 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1] [2024-11-20 22:02:44,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-20 22:02:44,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:02:44,421 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-20 22:02:44,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:02:44,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1843620144, now seen corresponding path program 1 times [2024-11-20 22:02:44,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:02:44,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477712882] [2024-11-20 22:02:44,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:02:44,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:02:44,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:02:44,470 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:02:44,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:02:44,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477712882] [2024-11-20 22:02:44,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477712882] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:02:44,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451813415] [2024-11-20 22:02:44,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:02:44,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:02:44,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:02:44,473 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 22:02:44,474 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 22:02:44,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:02:44,512 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-20 22:02:44,513 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:02:44,539 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:02:44,540 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:02:44,585 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:02:44,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451813415] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:02:44,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:02:44,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-11-20 22:02:44,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750190647] [2024-11-20 22:02:44,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:02:44,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-20 22:02:44,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:02:44,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-20 22:02:44,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-20 22:02:44,587 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2024-11-20 22:02:44,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 42 transitions, 217 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 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 22:02:44,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:02:44,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2024-11-20 22:02:44,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:02:44,977 INFO L124 PetriNetUnfolderBase]: 1462/3038 cut-off events. [2024-11-20 22:02:44,977 INFO L125 PetriNetUnfolderBase]: For 5330/5464 co-relation queries the response was YES. [2024-11-20 22:02:44,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9097 conditions, 3038 events. 1462/3038 cut-off events. For 5330/5464 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 17546 event pairs, 85 based on Foata normal form. 198/3235 useless extension candidates. Maximal degree in co-relation 9077. Up to 461 conditions per place. [2024-11-20 22:02:44,998 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 148 selfloop transitions, 14 changer transitions 2/170 dead transitions. [2024-11-20 22:02:44,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 170 transitions, 1160 flow [2024-11-20 22:02:44,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 22:02:44,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-20 22:02:44,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 218 transitions. [2024-11-20 22:02:44,999 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.692063492063492 [2024-11-20 22:02:44,999 INFO L175 Difference]: Start difference. First operand has 55 places, 42 transitions, 217 flow. Second operand 9 states and 218 transitions. [2024-11-20 22:02:45,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 170 transitions, 1160 flow [2024-11-20 22:02:45,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 170 transitions, 1159 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 22:02:45,014 INFO L231 Difference]: Finished difference. Result has 68 places, 53 transitions, 355 flow [2024-11-20 22:02:45,014 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=355, PETRI_PLACES=68, PETRI_TRANSITIONS=53} [2024-11-20 22:02:45,015 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 31 predicate places. [2024-11-20 22:02:45,015 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 53 transitions, 355 flow [2024-11-20 22:02:45,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 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 22:02:45,015 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:02:45,015 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:02:45,024 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-20 22:02:45,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-20 22:02:45,217 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-20 22:02:45,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:02:45,217 INFO L85 PathProgramCache]: Analyzing trace with hash 440173143, now seen corresponding path program 1 times [2024-11-20 22:02:45,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:02:45,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483215551] [2024-11-20 22:02:45,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:02:45,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:02:45,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:02:45,283 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 22:02:45,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:02:45,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483215551] [2024-11-20 22:02:45,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483215551] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:02:45,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634456265] [2024-11-20 22:02:45,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:02:45,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:02:45,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:02:45,286 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:02:45,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-20 22:02:45,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:02:45,331 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-20 22:02:45,332 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:02:45,375 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:02:45,376 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 22:02:45,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634456265] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:02:45,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 22:02:45,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-20 22:02:45,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616246798] [2024-11-20 22:02:45,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:02:45,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 22:02:45,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:02:45,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 22:02:45,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-20 22:02:45,384 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2024-11-20 22:02:45,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 53 transitions, 355 flow. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 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 22:02:45,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:02:45,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2024-11-20 22:02:45,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:02:45,757 INFO L124 PetriNetUnfolderBase]: 1600/3111 cut-off events. [2024-11-20 22:02:45,757 INFO L125 PetriNetUnfolderBase]: For 7194/7232 co-relation queries the response was YES. [2024-11-20 22:02:45,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10424 conditions, 3111 events. 1600/3111 cut-off events. For 7194/7232 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 17584 event pairs, 251 based on Foata normal form. 111/3110 useless extension candidates. Maximal degree in co-relation 10397. Up to 897 conditions per place. [2024-11-20 22:02:45,783 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 144 selfloop transitions, 7 changer transitions 0/155 dead transitions. [2024-11-20 22:02:45,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 155 transitions, 1447 flow [2024-11-20 22:02:45,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 22:02:45,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 22:02:45,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 114 transitions. [2024-11-20 22:02:45,784 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5428571428571428 [2024-11-20 22:02:45,784 INFO L175 Difference]: Start difference. First operand has 68 places, 53 transitions, 355 flow. Second operand 6 states and 114 transitions. [2024-11-20 22:02:45,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 155 transitions, 1447 flow [2024-11-20 22:02:45,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 155 transitions, 1390 flow, removed 27 selfloop flow, removed 1 redundant places. [2024-11-20 22:02:45,797 INFO L231 Difference]: Finished difference. Result has 71 places, 52 transitions, 351 flow [2024-11-20 22:02:45,798 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=351, PETRI_PLACES=71, PETRI_TRANSITIONS=52} [2024-11-20 22:02:45,798 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 34 predicate places. [2024-11-20 22:02:45,798 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 52 transitions, 351 flow [2024-11-20 22:02:45,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 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 22:02:45,799 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:02:45,799 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:02:45,807 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-20 22:02:46,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:02:46,004 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-20 22:02:46,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:02:46,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1970700609, now seen corresponding path program 1 times [2024-11-20 22:02:46,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:02:46,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370365357] [2024-11-20 22:02:46,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:02:46,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:02:46,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:02:46,077 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:02:46,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:02:46,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370365357] [2024-11-20 22:02:46,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370365357] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:02:46,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713403165] [2024-11-20 22:02:46,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:02:46,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:02:46,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:02:46,081 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:02:46,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-20 22:02:46,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:02:46,132 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-20 22:02:46,133 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:02:46,171 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:02:46,171 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:02:46,216 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:02:46,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713403165] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:02:46,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:02:46,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-20 22:02:46,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18241642] [2024-11-20 22:02:46,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:02:46,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-20 22:02:46,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:02:46,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-20 22:02:46,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-20 22:02:46,231 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2024-11-20 22:02:46,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 52 transitions, 351 flow. Second operand has 12 states, 12 states have (on average 12.833333333333334) internal successors, (154), 12 states have internal predecessors, (154), 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 22:02:46,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:02:46,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2024-11-20 22:02:46,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:02:46,984 INFO L124 PetriNetUnfolderBase]: 2870/5404 cut-off events. [2024-11-20 22:02:46,984 INFO L125 PetriNetUnfolderBase]: For 13474/13580 co-relation queries the response was YES. [2024-11-20 22:02:47,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19130 conditions, 5404 events. 2870/5404 cut-off events. For 13474/13580 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 32180 event pairs, 629 based on Foata normal form. 243/5646 useless extension candidates. Maximal degree in co-relation 19103. Up to 1842 conditions per place. [2024-11-20 22:02:47,033 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 243 selfloop transitions, 13 changer transitions 6/266 dead transitions. [2024-11-20 22:02:47,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 266 transitions, 2463 flow [2024-11-20 22:02:47,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 22:02:47,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-20 22:02:47,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 199 transitions. [2024-11-20 22:02:47,035 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5685714285714286 [2024-11-20 22:02:47,035 INFO L175 Difference]: Start difference. First operand has 71 places, 52 transitions, 351 flow. Second operand 10 states and 199 transitions. [2024-11-20 22:02:47,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 266 transitions, 2463 flow [2024-11-20 22:02:47,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 266 transitions, 2433 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-11-20 22:02:47,061 INFO L231 Difference]: Finished difference. Result has 79 places, 60 transitions, 414 flow [2024-11-20 22:02:47,061 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=414, PETRI_PLACES=79, PETRI_TRANSITIONS=60} [2024-11-20 22:02:47,061 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 42 predicate places. [2024-11-20 22:02:47,061 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 60 transitions, 414 flow [2024-11-20 22:02:47,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.833333333333334) internal successors, (154), 12 states have internal predecessors, (154), 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 22:02:47,062 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:02:47,062 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1] [2024-11-20 22:02:47,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-20 22:02:47,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:02:47,263 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-20 22:02:47,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:02:47,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1820028477, now seen corresponding path program 2 times [2024-11-20 22:02:47,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:02:47,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385881896] [2024-11-20 22:02:47,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:02:47,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:02:47,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:02:47,434 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:02:47,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:02:47,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385881896] [2024-11-20 22:02:47,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385881896] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:02:47,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204670015] [2024-11-20 22:02:47,435 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 22:02:47,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:02:47,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:02:47,438 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:02:47,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-20 22:02:47,474 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-20 22:02:47,474 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 22:02:47,474 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-20 22:02:47,475 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:02:47,540 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-20 22:02:47,540 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:02:47,594 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-20 22:02:47,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204670015] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:02:47,595 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:02:47,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 3, 3] total 14 [2024-11-20 22:02:47,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149135674] [2024-11-20 22:02:47,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:02:47,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-20 22:02:47,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:02:47,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-20 22:02:47,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-20 22:02:47,635 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-11-20 22:02:47,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 60 transitions, 414 flow. Second operand has 15 states, 15 states have (on average 11.266666666666667) internal successors, (169), 15 states have internal predecessors, (169), 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 22:02:47,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:02:47,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-11-20 22:02:47,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:02:48,728 INFO L124 PetriNetUnfolderBase]: 4196/7413 cut-off events. [2024-11-20 22:02:48,728 INFO L125 PetriNetUnfolderBase]: For 22643/22723 co-relation queries the response was YES. [2024-11-20 22:02:48,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26022 conditions, 7413 events. 4196/7413 cut-off events. For 22643/22723 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 43205 event pairs, 274 based on Foata normal form. 310/7723 useless extension candidates. Maximal degree in co-relation 25993. Up to 1667 conditions per place. [2024-11-20 22:02:48,779 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 304 selfloop transitions, 18 changer transitions 0/325 dead transitions. [2024-11-20 22:02:48,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 325 transitions, 2688 flow [2024-11-20 22:02:48,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-20 22:02:48,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-20 22:02:48,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 288 transitions. [2024-11-20 22:02:48,781 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5485714285714286 [2024-11-20 22:02:48,781 INFO L175 Difference]: Start difference. First operand has 79 places, 60 transitions, 414 flow. Second operand 15 states and 288 transitions. [2024-11-20 22:02:48,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 325 transitions, 2688 flow [2024-11-20 22:02:48,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 325 transitions, 2553 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-11-20 22:02:48,815 INFO L231 Difference]: Finished difference. Result has 87 places, 64 transitions, 454 flow [2024-11-20 22:02:48,816 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=383, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=454, PETRI_PLACES=87, PETRI_TRANSITIONS=64} [2024-11-20 22:02:48,816 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 50 predicate places. [2024-11-20 22:02:48,817 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 64 transitions, 454 flow [2024-11-20 22:02:48,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 11.266666666666667) internal successors, (169), 15 states have internal predecessors, (169), 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 22:02:48,818 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:02:48,818 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 6, 6, 1, 1, 1, 1] [2024-11-20 22:02:48,826 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-20 22:02:49,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-20 22:02:49,019 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-20 22:02:49,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:02:49,019 INFO L85 PathProgramCache]: Analyzing trace with hash -254515728, now seen corresponding path program 2 times [2024-11-20 22:02:49,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:02:49,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442904616] [2024-11-20 22:02:49,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:02:49,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:02:49,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:02:49,221 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:02:49,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:02:49,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442904616] [2024-11-20 22:02:49,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442904616] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:02:49,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809504441] [2024-11-20 22:02:49,222 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 22:02:49,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:02:49,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:02:49,224 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:02:49,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-20 22:02:49,270 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 22:02:49,271 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 22:02:49,272 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-20 22:02:49,273 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:02:49,337 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:02:49,337 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:02:49,472 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:02:49,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809504441] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:02:49,473 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:02:49,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-20 22:02:49,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277955632] [2024-11-20 22:02:49,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:02:49,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-20 22:02:49,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:02:49,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-20 22:02:49,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2024-11-20 22:02:49,475 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2024-11-20 22:02:49,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 64 transitions, 454 flow. Second operand has 17 states, 17 states have (on average 14.823529411764707) internal successors, (252), 17 states have internal predecessors, (252), 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 22:02:49,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:02:49,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2024-11-20 22:02:49,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:02:51,222 INFO L124 PetriNetUnfolderBase]: 7900/15185 cut-off events. [2024-11-20 22:02:51,222 INFO L125 PetriNetUnfolderBase]: For 65977/66409 co-relation queries the response was YES. [2024-11-20 22:02:51,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55401 conditions, 15185 events. 7900/15185 cut-off events. For 65977/66409 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 104233 event pairs, 202 based on Foata normal form. 667/15851 useless extension candidates. Maximal degree in co-relation 55373. Up to 3123 conditions per place. [2024-11-20 22:02:51,419 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 414 selfloop transitions, 58 changer transitions 9/486 dead transitions. [2024-11-20 22:02:51,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 486 transitions, 3980 flow [2024-11-20 22:02:51,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-20 22:02:51,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-20 22:02:51,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 434 transitions. [2024-11-20 22:02:51,423 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7294117647058823 [2024-11-20 22:02:51,423 INFO L175 Difference]: Start difference. First operand has 87 places, 64 transitions, 454 flow. Second operand 17 states and 434 transitions. [2024-11-20 22:02:51,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 486 transitions, 3980 flow [2024-11-20 22:02:51,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 486 transitions, 3711 flow, removed 68 selfloop flow, removed 11 redundant places. [2024-11-20 22:02:51,505 INFO L231 Difference]: Finished difference. Result has 106 places, 106 transitions, 1006 flow [2024-11-20 22:02:51,506 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1006, PETRI_PLACES=106, PETRI_TRANSITIONS=106} [2024-11-20 22:02:51,506 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 69 predicate places. [2024-11-20 22:02:51,506 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 106 transitions, 1006 flow [2024-11-20 22:02:51,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 14.823529411764707) internal successors, (252), 17 states have internal predecessors, (252), 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 22:02:51,506 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:02:51,507 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:02:51,515 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-20 22:02:51,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-20 22:02:51,707 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-20 22:02:51,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:02:51,708 INFO L85 PathProgramCache]: Analyzing trace with hash -2025392086, now seen corresponding path program 2 times [2024-11-20 22:02:51,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:02:51,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763700406] [2024-11-20 22:02:51,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:02:51,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:02:51,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:02:51,907 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 4 proven. 83 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 22:02:51,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:02:51,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763700406] [2024-11-20 22:02:51,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763700406] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:02:51,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750894651] [2024-11-20 22:02:51,909 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 22:02:51,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:02:51,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:02:51,911 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:02:51,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-20 22:02:51,976 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 22:02:51,976 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 22:02:51,977 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-20 22:02:51,979 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:02:52,058 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 4 proven. 83 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 22:02:52,058 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:02:52,234 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 4 proven. 83 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 22:02:52,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750894651] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:02:52,235 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:02:52,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2024-11-20 22:02:52,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015552133] [2024-11-20 22:02:52,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:02:52,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-20 22:02:52,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:02:52,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-20 22:02:52,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2024-11-20 22:02:52,269 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2024-11-20 22:02:52,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 106 transitions, 1006 flow. Second operand has 24 states, 24 states have (on average 13.375) internal successors, (321), 24 states have internal predecessors, (321), 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 22:02:52,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:02:52,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2024-11-20 22:02:52,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:02:56,693 INFO L124 PetriNetUnfolderBase]: 18395/33725 cut-off events. [2024-11-20 22:02:56,693 INFO L125 PetriNetUnfolderBase]: For 139576/141366 co-relation queries the response was YES. [2024-11-20 22:02:57,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126849 conditions, 33725 events. 18395/33725 cut-off events. For 139576/141366 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 241725 event pairs, 1952 based on Foata normal form. 3329/37053 useless extension candidates. Maximal degree in co-relation 126807. Up to 7245 conditions per place. [2024-11-20 22:02:57,172 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 1104 selfloop transitions, 31 changer transitions 12/1151 dead transitions. [2024-11-20 22:02:57,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 1151 transitions, 14915 flow [2024-11-20 22:02:57,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-20 22:02:57,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-20 22:02:57,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 436 transitions. [2024-11-20 22:02:57,176 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5662337662337662 [2024-11-20 22:02:57,176 INFO L175 Difference]: Start difference. First operand has 106 places, 106 transitions, 1006 flow. Second operand 22 states and 436 transitions. [2024-11-20 22:02:57,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 1151 transitions, 14915 flow [2024-11-20 22:02:57,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 1151 transitions, 13449 flow, removed 652 selfloop flow, removed 4 redundant places. [2024-11-20 22:02:57,508 INFO L231 Difference]: Finished difference. Result has 129 places, 123 transitions, 1114 flow [2024-11-20 22:02:57,509 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=914, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1114, PETRI_PLACES=129, PETRI_TRANSITIONS=123} [2024-11-20 22:02:57,509 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 92 predicate places. [2024-11-20 22:02:57,509 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 123 transitions, 1114 flow [2024-11-20 22:02:57,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 13.375) internal successors, (321), 24 states have internal predecessors, (321), 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 22:02:57,510 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:02:57,510 INFO L204 CegarLoopForPetriNet]: trace histogram [15, 14, 14, 14, 14, 1, 1, 1, 1] [2024-11-20 22:02:57,517 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-20 22:02:57,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-20 22:02:57,715 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-20 22:02:57,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:02:57,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1785938064, now seen corresponding path program 3 times [2024-11-20 22:02:57,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:02:57,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579238809] [2024-11-20 22:02:57,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:02:57,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:02:57,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:02:58,186 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:02:58,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:02:58,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579238809] [2024-11-20 22:02:58,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579238809] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:02:58,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484834157] [2024-11-20 22:02:58,187 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-20 22:02:58,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:02:58,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:02:58,190 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:02:58,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-20 22:02:58,261 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2024-11-20 22:02:58,261 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 22:02:58,262 INFO L255 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-20 22:02:58,265 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:02:58,378 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:02:58,378 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:02:58,873 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:02:58,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484834157] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:02:58,874 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:02:58,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2024-11-20 22:02:58,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092983318] [2024-11-20 22:02:58,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:02:58,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-20 22:02:58,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:02:58,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-20 22:02:58,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2024-11-20 22:02:58,876 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2024-11-20 22:02:58,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 123 transitions, 1114 flow. Second operand has 33 states, 33 states have (on average 14.909090909090908) internal successors, (492), 33 states have internal predecessors, (492), 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 22:02:58,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:02:58,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2024-11-20 22:02:58,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:03:14,632 INFO L124 PetriNetUnfolderBase]: 55036/103381 cut-off events. [2024-11-20 22:03:14,632 INFO L125 PetriNetUnfolderBase]: For 801058/801943 co-relation queries the response was YES. [2024-11-20 22:03:15,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 389080 conditions, 103381 events. 55036/103381 cut-off events. For 801058/801943 co-relation queries the response was YES. Maximal size of possible extension queue 676. Compared 868530 event pairs, 900 based on Foata normal form. 2191/105571 useless extension candidates. Maximal degree in co-relation 389035. Up to 21098 conditions per place. [2024-11-20 22:03:16,005 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 1350 selfloop transitions, 214 changer transitions 0/1569 dead transitions. [2024-11-20 22:03:16,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 1569 transitions, 15246 flow [2024-11-20 22:03:16,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-20 22:03:16,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2024-11-20 22:03:16,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 866 transitions. [2024-11-20 22:03:16,009 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7497835497835498 [2024-11-20 22:03:16,009 INFO L175 Difference]: Start difference. First operand has 129 places, 123 transitions, 1114 flow. Second operand 33 states and 866 transitions. [2024-11-20 22:03:16,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 1569 transitions, 15246 flow [2024-11-20 22:03:17,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 1569 transitions, 12766 flow, removed 837 selfloop flow, removed 9 redundant places. [2024-11-20 22:03:17,322 INFO L231 Difference]: Finished difference. Result has 182 places, 279 transitions, 3183 flow [2024-11-20 22:03:17,323 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1034, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=3183, PETRI_PLACES=182, PETRI_TRANSITIONS=279} [2024-11-20 22:03:17,323 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 145 predicate places. [2024-11-20 22:03:17,323 INFO L471 AbstractCegarLoop]: Abstraction has has 182 places, 279 transitions, 3183 flow [2024-11-20 22:03:17,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 14.909090909090908) internal successors, (492), 33 states have internal predecessors, (492), 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 22:03:17,324 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:03:17,324 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:03:17,330 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-20 22:03:17,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-20 22:03:17,525 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-20 22:03:17,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:03:17,525 INFO L85 PathProgramCache]: Analyzing trace with hash -599995262, now seen corresponding path program 3 times [2024-11-20 22:03:17,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:03:17,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392024516] [2024-11-20 22:03:17,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:03:17,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:03:17,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:03:18,085 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 518 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 22:03:18,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:03:18,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392024516] [2024-11-20 22:03:18,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392024516] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:03:18,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256355696] [2024-11-20 22:03:18,086 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-20 22:03:18,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:03:18,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:03:18,088 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:03:18,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-20 22:03:18,140 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-20 22:03:18,140 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 22:03:18,142 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-20 22:03:18,146 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:03:18,327 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-20 22:03:18,328 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:03:18,482 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-20 22:03:18,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256355696] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:03:18,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:03:18,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 3, 3] total 26 [2024-11-20 22:03:18,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692790682] [2024-11-20 22:03:18,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:03:18,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-20 22:03:18,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:03:18,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-20 22:03:18,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=519, Unknown=0, NotChecked=0, Total=702 [2024-11-20 22:03:18,524 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2024-11-20 22:03:18,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 279 transitions, 3183 flow. Second operand has 27 states, 27 states have (on average 13.62962962962963) internal successors, (368), 27 states have internal predecessors, (368), 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 22:03:18,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:03:18,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2024-11-20 22:03:18,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:03:40,795 INFO L124 PetriNetUnfolderBase]: 63702/115554 cut-off events. [2024-11-20 22:03:40,795 INFO L125 PetriNetUnfolderBase]: For 608836/608836 co-relation queries the response was YES. [2024-11-20 22:03:43,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 442204 conditions, 115554 events. 63702/115554 cut-off events. For 608836/608836 co-relation queries the response was YES. Maximal size of possible extension queue 703. Compared 955694 event pairs, 1744 based on Foata normal form. 1943/117496 useless extension candidates. Maximal degree in co-relation 442128. Up to 17888 conditions per place. [2024-11-20 22:03:43,828 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 3376 selfloop transitions, 40 changer transitions 50/3470 dead transitions. [2024-11-20 22:03:43,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 3470 transitions, 51005 flow [2024-11-20 22:03:43,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-20 22:03:43,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-20 22:03:43,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 516 transitions. [2024-11-20 22:03:43,831 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.546031746031746 [2024-11-20 22:03:43,831 INFO L175 Difference]: Start difference. First operand has 182 places, 279 transitions, 3183 flow. Second operand 27 states and 516 transitions. [2024-11-20 22:03:43,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 3470 transitions, 51005 flow