./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-figure1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../sv-benchmarks/c/weaver/popl20-figure1.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 facd7612076746f2d167aef7303c13ba7b66236eba7a99773acf1e3861338848 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 15:12:12,528 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 15:12:12,577 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-09 15:12:12,580 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 15:12:12,580 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 15:12:12,598 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 15:12:12,598 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 15:12:12,599 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 15:12:12,599 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 15:12:12,599 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 15:12:12,600 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 15:12:12,600 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 15:12:12,600 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 15:12:12,600 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 15:12:12,601 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 15:12:12,601 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 15:12:12,601 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 15:12:12,601 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 15:12:12,602 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 15:12:12,602 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 15:12:12,602 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 15:12:12,603 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 15:12:12,603 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 15:12:12,603 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 15:12:12,603 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 15:12:12,603 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-09 15:12:12,604 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 15:12:12,604 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 15:12:12,604 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 15:12:12,604 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 15:12:12,604 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 15:12:12,605 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 15:12:12,605 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 15:12:12,605 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 15:12:12,605 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 15:12:12,606 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 15:12:12,606 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 15:12:12,606 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 15:12:12,606 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 15:12:12,606 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 15:12:12,606 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 15:12:12,607 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 15:12:12,607 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 15:12:12,607 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 15:12:12,607 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> facd7612076746f2d167aef7303c13ba7b66236eba7a99773acf1e3861338848 [2024-11-09 15:12:12,827 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 15:12:12,847 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 15:12:12,850 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 15:12:12,851 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 15:12:12,851 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 15:12:12,852 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-figure1.wvr.c [2024-11-09 15:12:13,999 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 15:12:14,175 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 15:12:14,175 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-figure1.wvr.c [2024-11-09 15:12:14,181 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55e5bee8f/dedbf69568a342a6a9a72f6579914b40/FLAG31341069e [2024-11-09 15:12:14,595 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55e5bee8f/dedbf69568a342a6a9a72f6579914b40 [2024-11-09 15:12:14,597 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 15:12:14,598 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 15:12:14,599 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 15:12:14,599 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 15:12:14,607 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 15:12:14,607 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:12:14" (1/1) ... [2024-11-09 15:12:14,608 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48565492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:14, skipping insertion in model container [2024-11-09 15:12:14,609 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:12:14" (1/1) ... [2024-11-09 15:12:14,627 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 15:12:14,771 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:12:14,776 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 15:12:14,792 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:12:14,805 INFO L204 MainTranslator]: Completed translation [2024-11-09 15:12:14,805 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:14 WrapperNode [2024-11-09 15:12:14,805 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 15:12:14,806 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 15:12:14,806 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 15:12:14,806 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 15:12:14,810 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:14" (1/1) ... [2024-11-09 15:12:14,815 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:14" (1/1) ... [2024-11-09 15:12:14,827 INFO L138 Inliner]: procedures = 18, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 63 [2024-11-09 15:12:14,828 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 15:12:14,828 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 15:12:14,828 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 15:12:14,830 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 15:12:14,840 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:14" (1/1) ... [2024-11-09 15:12:14,840 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:14" (1/1) ... [2024-11-09 15:12:14,842 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:14" (1/1) ... [2024-11-09 15:12:14,852 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]. [2024-11-09 15:12:14,852 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:14" (1/1) ... [2024-11-09 15:12:14,852 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:14" (1/1) ... [2024-11-09 15:12:14,855 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:14" (1/1) ... [2024-11-09 15:12:14,857 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:14" (1/1) ... [2024-11-09 15:12:14,857 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:14" (1/1) ... [2024-11-09 15:12:14,858 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:14" (1/1) ... [2024-11-09 15:12:14,863 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 15:12:14,863 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 15:12:14,863 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 15:12:14,863 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 15:12:14,864 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:14" (1/1) ... [2024-11-09 15:12:14,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 15:12:14,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:12:14,894 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) [2024-11-09 15:12:14,896 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 [2024-11-09 15:12:14,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 15:12:14,933 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 15:12:14,933 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 15:12:14,933 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 15:12:14,933 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 15:12:14,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 15:12:14,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 15:12:14,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 15:12:14,935 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 15:12:15,015 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 15:12:15,017 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 15:12:15,154 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 15:12:15,154 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 15:12:15,241 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 15:12:15,242 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-09 15:12:15,242 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:12:15 BoogieIcfgContainer [2024-11-09 15:12:15,242 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 15:12:15,243 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 15:12:15,244 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 15:12:15,246 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 15:12:15,246 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 03:12:14" (1/3) ... [2024-11-09 15:12:15,247 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a05951e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:12:15, skipping insertion in model container [2024-11-09 15:12:15,247 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:14" (2/3) ... [2024-11-09 15:12:15,247 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a05951e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:12:15, skipping insertion in model container [2024-11-09 15:12:15,247 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:12:15" (3/3) ... [2024-11-09 15:12:15,248 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-figure1.wvr.c [2024-11-09 15:12:15,259 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 15:12:15,259 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-09 15:12:15,259 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 15:12:15,302 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-09 15:12:15,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 32 transitions, 78 flow [2024-11-09 15:12:15,348 INFO L124 PetriNetUnfolderBase]: 2/30 cut-off events. [2024-11-09 15:12:15,348 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 15:12:15,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 30 events. 2/30 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 67 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2024-11-09 15:12:15,354 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 32 transitions, 78 flow [2024-11-09 15:12:15,358 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 28 transitions, 65 flow [2024-11-09 15:12:15,365 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 15:12:15,370 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;@72cf6981, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 15:12:15,374 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-11-09 15:12:15,378 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 15:12:15,378 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-11-09 15:12:15,378 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-09 15:12:15,378 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:12:15,379 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-09 15:12:15,379 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-09 15:12:15,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:12:15,384 INFO L85 PathProgramCache]: Analyzing trace with hash 244277289, now seen corresponding path program 1 times [2024-11-09 15:12:15,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:12:15,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441883634] [2024-11-09 15:12:15,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:12:15,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:12:15,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:12:15,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:12:15,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:12:15,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441883634] [2024-11-09 15:12:15,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441883634] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:12:15,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:12:15,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 15:12:15,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443522623] [2024-11-09 15:12:15,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:12:15,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 15:12:15,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:12:15,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 15:12:15,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 15:12:15,568 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-09 15:12:15,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 65 flow. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2024-11-09 15:12:15,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:12:15,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-09 15:12:15,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:12:15,686 INFO L124 PetriNetUnfolderBase]: 194/408 cut-off events. [2024-11-09 15:12:15,686 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-11-09 15:12:15,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 781 conditions, 408 events. 194/408 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1825 event pairs, 77 based on Foata normal form. 0/312 useless extension candidates. Maximal degree in co-relation 718. Up to 289 conditions per place. [2024-11-09 15:12:15,691 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 25 selfloop transitions, 2 changer transitions 2/36 dead transitions. [2024-11-09 15:12:15,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 145 flow [2024-11-09 15:12:15,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 15:12:15,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 15:12:15,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 59 transitions. [2024-11-09 15:12:15,703 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6145833333333334 [2024-11-09 15:12:15,704 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 65 flow. Second operand 3 states and 59 transitions. [2024-11-09 15:12:15,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 145 flow [2024-11-09 15:12:15,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 36 transitions, 137 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 15:12:15,708 INFO L231 Difference]: Finished difference. Result has 33 places, 29 transitions, 76 flow [2024-11-09 15:12:15,710 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=33, PETRI_TRANSITIONS=29} [2024-11-09 15:12:15,712 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 0 predicate places. [2024-11-09 15:12:15,712 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 29 transitions, 76 flow [2024-11-09 15:12:15,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2024-11-09 15:12:15,713 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:12:15,713 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:12:15,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 15:12:15,713 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-09 15:12:15,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:12:15,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1472717044, now seen corresponding path program 1 times [2024-11-09 15:12:15,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:12:15,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490105384] [2024-11-09 15:12:15,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:12:15,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:12:15,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:12:15,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:12:15,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:12:15,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490105384] [2024-11-09 15:12:15,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490105384] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:12:15,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:12:15,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:12:15,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082416013] [2024-11-09 15:12:15,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:12:15,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:12:15,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:12:15,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:12:15,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:12:15,808 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-11-09 15:12:15,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 29 transitions, 76 flow. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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) [2024-11-09 15:12:15,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:12:15,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-11-09 15:12:15,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:12:15,957 INFO L124 PetriNetUnfolderBase]: 298/571 cut-off events. [2024-11-09 15:12:15,957 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2024-11-09 15:12:15,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1208 conditions, 571 events. 298/571 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2638 event pairs, 127 based on Foata normal form. 18/490 useless extension candidates. Maximal degree in co-relation 733. Up to 420 conditions per place. [2024-11-09 15:12:15,963 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 45 selfloop transitions, 3 changer transitions 1/54 dead transitions. [2024-11-09 15:12:15,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 54 transitions, 232 flow [2024-11-09 15:12:15,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:12:15,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:12:15,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 79 transitions. [2024-11-09 15:12:15,965 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6171875 [2024-11-09 15:12:15,966 INFO L175 Difference]: Start difference. First operand has 33 places, 29 transitions, 76 flow. Second operand 4 states and 79 transitions. [2024-11-09 15:12:15,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 54 transitions, 232 flow [2024-11-09 15:12:15,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 54 transitions, 230 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:12:15,968 INFO L231 Difference]: Finished difference. Result has 37 places, 31 transitions, 98 flow [2024-11-09 15:12:15,968 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=98, PETRI_PLACES=37, PETRI_TRANSITIONS=31} [2024-11-09 15:12:15,968 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 4 predicate places. [2024-11-09 15:12:15,969 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 31 transitions, 98 flow [2024-11-09 15:12:15,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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) [2024-11-09 15:12:15,969 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:12:15,969 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:12:15,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 15:12:15,969 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-09 15:12:15,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:12:15,970 INFO L85 PathProgramCache]: Analyzing trace with hash 2077733453, now seen corresponding path program 1 times [2024-11-09 15:12:15,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:12:15,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493967492] [2024-11-09 15:12:15,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:12:15,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:12:15,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:12:16,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:12:16,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:12:16,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493967492] [2024-11-09 15:12:16,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493967492] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:12:16,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:12:16,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:12:16,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858396927] [2024-11-09 15:12:16,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:12:16,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 15:12:16,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:12:16,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 15:12:16,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 15:12:16,041 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-09 15:12:16,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 31 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2024-11-09 15:12:16,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:12:16,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-09 15:12:16,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:12:16,127 INFO L124 PetriNetUnfolderBase]: 210/466 cut-off events. [2024-11-09 15:12:16,128 INFO L125 PetriNetUnfolderBase]: For 149/153 co-relation queries the response was YES. [2024-11-09 15:12:16,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1079 conditions, 466 events. 210/466 cut-off events. For 149/153 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2278 event pairs, 122 based on Foata normal form. 0/404 useless extension candidates. Maximal degree in co-relation 863. Up to 262 conditions per place. [2024-11-09 15:12:16,133 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 36 selfloop transitions, 3 changer transitions 0/46 dead transitions. [2024-11-09 15:12:16,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 46 transitions, 228 flow [2024-11-09 15:12:16,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 15:12:16,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 15:12:16,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 63 transitions. [2024-11-09 15:12:16,135 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.65625 [2024-11-09 15:12:16,135 INFO L175 Difference]: Start difference. First operand has 37 places, 31 transitions, 98 flow. Second operand 3 states and 63 transitions. [2024-11-09 15:12:16,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 46 transitions, 228 flow [2024-11-09 15:12:16,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 46 transitions, 225 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:12:16,139 INFO L231 Difference]: Finished difference. Result has 39 places, 32 transitions, 120 flow [2024-11-09 15:12:16,139 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=39, PETRI_TRANSITIONS=32} [2024-11-09 15:12:16,139 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 6 predicate places. [2024-11-09 15:12:16,140 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 32 transitions, 120 flow [2024-11-09 15:12:16,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2024-11-09 15:12:16,141 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:12:16,141 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:12:16,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 15:12:16,141 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-09 15:12:16,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:12:16,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1435994762, now seen corresponding path program 1 times [2024-11-09 15:12:16,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:12:16,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473361983] [2024-11-09 15:12:16,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:12:16,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:12:16,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:12:16,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:12:16,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:12:16,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473361983] [2024-11-09 15:12:16,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473361983] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:12:16,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:12:16,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:12:16,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105508279] [2024-11-09 15:12:16,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:12:16,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:12:16,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:12:16,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:12:16,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:12:16,221 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-09 15:12:16,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 32 transitions, 120 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 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) [2024-11-09 15:12:16,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:12:16,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-09 15:12:16,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:12:16,299 INFO L124 PetriNetUnfolderBase]: 261/559 cut-off events. [2024-11-09 15:12:16,299 INFO L125 PetriNetUnfolderBase]: For 468/470 co-relation queries the response was YES. [2024-11-09 15:12:16,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1425 conditions, 559 events. 261/559 cut-off events. For 468/470 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2539 event pairs, 45 based on Foata normal form. 25/571 useless extension candidates. Maximal degree in co-relation 1203. Up to 236 conditions per place. [2024-11-09 15:12:16,303 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 39 selfloop transitions, 4 changer transitions 0/50 dead transitions. [2024-11-09 15:12:16,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 50 transitions, 265 flow [2024-11-09 15:12:16,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:12:16,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:12:16,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 79 transitions. [2024-11-09 15:12:16,305 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6171875 [2024-11-09 15:12:16,305 INFO L175 Difference]: Start difference. First operand has 39 places, 32 transitions, 120 flow. Second operand 4 states and 79 transitions. [2024-11-09 15:12:16,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 50 transitions, 265 flow [2024-11-09 15:12:16,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 50 transitions, 255 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 15:12:16,308 INFO L231 Difference]: Finished difference. Result has 42 places, 34 transitions, 148 flow [2024-11-09 15:12:16,308 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=148, PETRI_PLACES=42, PETRI_TRANSITIONS=34} [2024-11-09 15:12:16,310 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 9 predicate places. [2024-11-09 15:12:16,311 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 34 transitions, 148 flow [2024-11-09 15:12:16,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 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) [2024-11-09 15:12:16,312 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:12:16,312 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:12:16,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 15:12:16,313 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-09 15:12:16,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:12:16,313 INFO L85 PathProgramCache]: Analyzing trace with hash -622260346, now seen corresponding path program 1 times [2024-11-09 15:12:16,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:12:16,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789678135] [2024-11-09 15:12:16,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:12:16,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:12:16,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:12:16,367 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:12:16,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:12:16,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789678135] [2024-11-09 15:12:16,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789678135] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:12:16,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624416971] [2024-11-09 15:12:16,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:12:16,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:12:16,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:12:16,371 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) [2024-11-09 15:12:16,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 15:12:16,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:12:16,415 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 15:12:16,418 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:12:16,463 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:12:16,464 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:12:16,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624416971] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:12:16,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:12:16,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2024-11-09 15:12:16,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390112666] [2024-11-09 15:12:16,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:12:16,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 15:12:16,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:12:16,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 15:12:16,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 15:12:16,466 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-09 15:12:16,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 34 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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) [2024-11-09 15:12:16,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:12:16,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-09 15:12:16,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:12:16,515 INFO L124 PetriNetUnfolderBase]: 231/515 cut-off events. [2024-11-09 15:12:16,516 INFO L125 PetriNetUnfolderBase]: For 607/609 co-relation queries the response was YES. [2024-11-09 15:12:16,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1307 conditions, 515 events. 231/515 cut-off events. For 607/609 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2394 event pairs, 191 based on Foata normal form. 24/524 useless extension candidates. Maximal degree in co-relation 1057. Up to 405 conditions per place. [2024-11-09 15:12:16,519 INFO L140 encePairwiseOnDemand]: 30/32 looper letters, 24 selfloop transitions, 1 changer transitions 0/32 dead transitions. [2024-11-09 15:12:16,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 32 transitions, 180 flow [2024-11-09 15:12:16,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 15:12:16,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 15:12:16,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 47 transitions. [2024-11-09 15:12:16,520 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2024-11-09 15:12:16,520 INFO L175 Difference]: Start difference. First operand has 42 places, 34 transitions, 148 flow. Second operand 3 states and 47 transitions. [2024-11-09 15:12:16,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 32 transitions, 180 flow [2024-11-09 15:12:16,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 32 transitions, 174 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 15:12:16,524 INFO L231 Difference]: Finished difference. Result has 40 places, 32 transitions, 126 flow [2024-11-09 15:12:16,524 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=40, PETRI_TRANSITIONS=32} [2024-11-09 15:12:16,525 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 7 predicate places. [2024-11-09 15:12:16,525 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 32 transitions, 126 flow [2024-11-09 15:12:16,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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) [2024-11-09 15:12:16,526 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:12:16,526 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:12:16,539 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 15:12:16,726 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 [2024-11-09 15:12:16,726 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-09 15:12:16,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:12:16,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1306455368, now seen corresponding path program 1 times [2024-11-09 15:12:16,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:12:16,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777560943] [2024-11-09 15:12:16,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:12:16,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:12:16,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:12:16,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:12:16,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:12:16,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777560943] [2024-11-09 15:12:16,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777560943] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:12:16,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:12:16,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:12:16,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145513381] [2024-11-09 15:12:16,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:12:16,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:12:16,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:12:16,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:12:16,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:12:16,767 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-11-09 15:12:16,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 32 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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) [2024-11-09 15:12:16,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:12:16,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-11-09 15:12:16,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:12:16,892 INFO L124 PetriNetUnfolderBase]: 445/852 cut-off events. [2024-11-09 15:12:16,892 INFO L125 PetriNetUnfolderBase]: For 593/629 co-relation queries the response was YES. [2024-11-09 15:12:16,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2225 conditions, 852 events. 445/852 cut-off events. For 593/629 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 3934 event pairs, 239 based on Foata normal form. 22/851 useless extension candidates. Maximal degree in co-relation 2213. Up to 522 conditions per place. [2024-11-09 15:12:16,897 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 53 selfloop transitions, 4 changer transitions 0/62 dead transitions. [2024-11-09 15:12:16,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 62 transitions, 378 flow [2024-11-09 15:12:16,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:12:16,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:12:16,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 72 transitions. [2024-11-09 15:12:16,899 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-11-09 15:12:16,900 INFO L175 Difference]: Start difference. First operand has 40 places, 32 transitions, 126 flow. Second operand 4 states and 72 transitions. [2024-11-09 15:12:16,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 62 transitions, 378 flow [2024-11-09 15:12:16,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 62 transitions, 377 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:12:16,904 INFO L231 Difference]: Finished difference. Result has 44 places, 35 transitions, 154 flow [2024-11-09 15:12:16,904 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=154, PETRI_PLACES=44, PETRI_TRANSITIONS=35} [2024-11-09 15:12:16,904 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 11 predicate places. [2024-11-09 15:12:16,905 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 35 transitions, 154 flow [2024-11-09 15:12:16,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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) [2024-11-09 15:12:16,905 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:12:16,905 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-09 15:12:16,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 15:12:16,906 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-09 15:12:16,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:12:16,906 INFO L85 PathProgramCache]: Analyzing trace with hash -991728855, now seen corresponding path program 1 times [2024-11-09 15:12:16,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:12:16,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527928586] [2024-11-09 15:12:16,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:12:16,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:12:16,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:12:16,987 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:12:16,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:12:16,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527928586] [2024-11-09 15:12:16,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527928586] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:12:16,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766163998] [2024-11-09 15:12:16,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:12:16,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:12:16,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:12:16,990 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) [2024-11-09 15:12:16,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 15:12:17,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:12:17,036 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:12:17,037 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:12:17,074 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:12:17,075 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:12:17,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766163998] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:12:17,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:12:17,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-09 15:12:17,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853724982] [2024-11-09 15:12:17,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:12:17,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 15:12:17,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:12:17,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 15:12:17,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 15:12:17,091 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-11-09 15:12:17,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 35 transitions, 154 flow. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 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) [2024-11-09 15:12:17,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:12:17,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-11-09 15:12:17,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:12:17,243 INFO L124 PetriNetUnfolderBase]: 425/834 cut-off events. [2024-11-09 15:12:17,243 INFO L125 PetriNetUnfolderBase]: For 811/847 co-relation queries the response was YES. [2024-11-09 15:12:17,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2397 conditions, 834 events. 425/834 cut-off events. For 811/847 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3832 event pairs, 48 based on Foata normal form. 26/834 useless extension candidates. Maximal degree in co-relation 2383. Up to 294 conditions per place. [2024-11-09 15:12:17,247 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 72 selfloop transitions, 6 changer transitions 1/84 dead transitions. [2024-11-09 15:12:17,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 84 transitions, 520 flow [2024-11-09 15:12:17,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 15:12:17,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 15:12:17,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 104 transitions. [2024-11-09 15:12:17,248 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-11-09 15:12:17,248 INFO L175 Difference]: Start difference. First operand has 44 places, 35 transitions, 154 flow. Second operand 6 states and 104 transitions. [2024-11-09 15:12:17,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 84 transitions, 520 flow [2024-11-09 15:12:17,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 84 transitions, 505 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:12:17,251 INFO L231 Difference]: Finished difference. Result has 47 places, 34 transitions, 159 flow [2024-11-09 15:12:17,251 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=42, 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=6, PETRI_FLOW=159, PETRI_PLACES=47, PETRI_TRANSITIONS=34} [2024-11-09 15:12:17,252 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 14 predicate places. [2024-11-09 15:12:17,252 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 34 transitions, 159 flow [2024-11-09 15:12:17,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 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) [2024-11-09 15:12:17,252 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:12:17,252 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-09 15:12:17,265 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 15:12:17,455 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,SelfDestructingSolverStorable6 [2024-11-09 15:12:17,456 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-09 15:12:17,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:12:17,456 INFO L85 PathProgramCache]: Analyzing trace with hash -678823162, now seen corresponding path program 1 times [2024-11-09 15:12:17,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:12:17,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794153393] [2024-11-09 15:12:17,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:12:17,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:12:17,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:12:17,491 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:12:17,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:12:17,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794153393] [2024-11-09 15:12:17,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794153393] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:12:17,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097722338] [2024-11-09 15:12:17,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:12:17,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:12:17,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:12:17,494 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) [2024-11-09 15:12:17,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 15:12:17,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:12:17,527 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:12:17,528 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:12:17,549 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:12:17,549 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:12:17,582 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:12:17,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097722338] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:12:17,583 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:12:17,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-09 15:12:17,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263564293] [2024-11-09 15:12:17,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:12:17,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 15:12:17,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:12:17,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 15:12:17,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-09 15:12:17,602 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-11-09 15:12:17,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 34 transitions, 159 flow. Second operand has 12 states, 12 states have (on average 8.666666666666666) internal successors, (104), 12 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:12:17,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:12:17,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-11-09 15:12:17,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:12:17,894 INFO L124 PetriNetUnfolderBase]: 889/1728 cut-off events. [2024-11-09 15:12:17,894 INFO L125 PetriNetUnfolderBase]: For 2206/2282 co-relation queries the response was YES. [2024-11-09 15:12:17,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5197 conditions, 1728 events. 889/1728 cut-off events. For 2206/2282 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 8595 event pairs, 136 based on Foata normal form. 78/1804 useless extension candidates. Maximal degree in co-relation 5183. Up to 606 conditions per place. [2024-11-09 15:12:17,904 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 136 selfloop transitions, 12 changer transitions 0/153 dead transitions. [2024-11-09 15:12:17,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 153 transitions, 973 flow [2024-11-09 15:12:17,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 15:12:17,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 15:12:17,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-11-09 15:12:17,906 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5875 [2024-11-09 15:12:17,906 INFO L175 Difference]: Start difference. First operand has 47 places, 34 transitions, 159 flow. Second operand 10 states and 188 transitions. [2024-11-09 15:12:17,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 153 transitions, 973 flow [2024-11-09 15:12:17,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 153 transitions, 946 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-11-09 15:12:17,910 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 228 flow [2024-11-09 15:12:17,911 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=43, 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=228, PETRI_PLACES=55, PETRI_TRANSITIONS=43} [2024-11-09 15:12:17,911 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 22 predicate places. [2024-11-09 15:12:17,912 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 228 flow [2024-11-09 15:12:17,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.666666666666666) internal successors, (104), 12 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:12:17,912 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:12:17,912 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:12:17,930 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 15:12:18,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:12:18,113 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-09 15:12:18,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:12:18,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1803619285, now seen corresponding path program 1 times [2024-11-09 15:12:18,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:12:18,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823023944] [2024-11-09 15:12:18,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:12:18,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:12:18,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:12:18,167 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:12:18,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:12:18,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823023944] [2024-11-09 15:12:18,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823023944] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:12:18,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376237450] [2024-11-09 15:12:18,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:12:18,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:12:18,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:12:18,171 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) [2024-11-09 15:12:18,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 15:12:18,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:12:18,209 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 15:12:18,210 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:12:18,243 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:12:18,243 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:12:18,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376237450] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:12:18,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:12:18,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2024-11-09 15:12:18,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132430270] [2024-11-09 15:12:18,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:12:18,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:12:18,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:12:18,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:12:18,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-09 15:12:18,245 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-09 15:12:18,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 228 flow. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:12:18,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:12:18,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-09 15:12:18,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:12:18,352 INFO L124 PetriNetUnfolderBase]: 749/1530 cut-off events. [2024-11-09 15:12:18,353 INFO L125 PetriNetUnfolderBase]: For 2437/2469 co-relation queries the response was YES. [2024-11-09 15:12:18,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4697 conditions, 1530 events. 749/1530 cut-off events. For 2437/2469 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 7763 event pairs, 585 based on Foata normal form. 62/1589 useless extension candidates. Maximal degree in co-relation 4681. Up to 1240 conditions per place. [2024-11-09 15:12:18,359 INFO L140 encePairwiseOnDemand]: 30/32 looper letters, 35 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2024-11-09 15:12:18,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 42 transitions, 296 flow [2024-11-09 15:12:18,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 15:12:18,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 15:12:18,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 46 transitions. [2024-11-09 15:12:18,360 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-11-09 15:12:18,360 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 228 flow. Second operand 3 states and 46 transitions. [2024-11-09 15:12:18,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 42 transitions, 296 flow [2024-11-09 15:12:18,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 42 transitions, 286 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-09 15:12:18,362 INFO L231 Difference]: Finished difference. Result has 54 places, 42 transitions, 216 flow [2024-11-09 15:12:18,363 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=52, 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=216, PETRI_PLACES=54, PETRI_TRANSITIONS=42} [2024-11-09 15:12:18,363 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 21 predicate places. [2024-11-09 15:12:18,364 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 42 transitions, 216 flow [2024-11-09 15:12:18,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:12:18,364 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:12:18,364 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1] [2024-11-09 15:12:18,378 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 15:12:18,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:12:18,565 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-09 15:12:18,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:12:18,566 INFO L85 PathProgramCache]: Analyzing trace with hash 485978698, now seen corresponding path program 1 times [2024-11-09 15:12:18,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:12:18,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724352469] [2024-11-09 15:12:18,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:12:18,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:12:18,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:12:18,600 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:12:18,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:12:18,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724352469] [2024-11-09 15:12:18,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724352469] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:12:18,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709864062] [2024-11-09 15:12:18,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:12:18,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:12:18,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:12:18,602 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) [2024-11-09 15:12:18,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 15:12:18,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:12:18,635 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 15:12:18,636 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:12:18,658 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:12:18,658 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:12:18,689 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:12:18,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709864062] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:12:18,689 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:12:18,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-11-09 15:12:18,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847649581] [2024-11-09 15:12:18,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:12:18,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 15:12:18,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:12:18,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 15:12:18,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-09 15:12:18,691 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-09 15:12:18,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 42 transitions, 216 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 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) [2024-11-09 15:12:18,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:12:18,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-09 15:12:18,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:12:18,967 INFO L124 PetriNetUnfolderBase]: 1462/3039 cut-off events. [2024-11-09 15:12:18,967 INFO L125 PetriNetUnfolderBase]: For 5330/5464 co-relation queries the response was YES. [2024-11-09 15:12:18,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9123 conditions, 3039 events. 1462/3039 cut-off events. For 5330/5464 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 17568 event pairs, 85 based on Foata normal form. 198/3236 useless extension candidates. Maximal degree in co-relation 9105. Up to 461 conditions per place. [2024-11-09 15:12:18,980 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 148 selfloop transitions, 14 changer transitions 2/170 dead transitions. [2024-11-09 15:12:18,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 170 transitions, 1165 flow [2024-11-09 15:12:18,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 15:12:18,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 15:12:18,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 191 transitions. [2024-11-09 15:12:18,981 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6631944444444444 [2024-11-09 15:12:18,982 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 216 flow. Second operand 9 states and 191 transitions. [2024-11-09 15:12:18,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 170 transitions, 1165 flow [2024-11-09 15:12:18,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 170 transitions, 1164 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:12:18,992 INFO L231 Difference]: Finished difference. Result has 67 places, 53 transitions, 354 flow [2024-11-09 15:12:18,992 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=53, 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=354, PETRI_PLACES=67, PETRI_TRANSITIONS=53} [2024-11-09 15:12:18,992 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 34 predicate places. [2024-11-09 15:12:18,993 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 53 transitions, 354 flow [2024-11-09 15:12:18,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 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) [2024-11-09 15:12:18,993 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:12:18,993 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:12:19,006 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 15:12:19,193 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,SelfDestructingSolverStorable9 [2024-11-09 15:12:19,194 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-09 15:12:19,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:12:19,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1414210555, now seen corresponding path program 1 times [2024-11-09 15:12:19,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:12:19,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903802975] [2024-11-09 15:12:19,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:12:19,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:12:19,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:12:19,247 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:12:19,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:12:19,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903802975] [2024-11-09 15:12:19,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903802975] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:12:19,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032727895] [2024-11-09 15:12:19,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:12:19,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:12:19,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:12:19,249 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) [2024-11-09 15:12:19,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 15:12:19,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:12:19,290 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:12:19,290 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:12:19,318 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:12:19,318 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:12:19,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032727895] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:12:19,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:12:19,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-09 15:12:19,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027180639] [2024-11-09 15:12:19,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:12:19,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 15:12:19,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:12:19,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 15:12:19,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 15:12:19,326 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-11-09 15:12:19,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 53 transitions, 354 flow. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 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) [2024-11-09 15:12:19,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:12:19,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-11-09 15:12:19,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:12:19,628 INFO L124 PetriNetUnfolderBase]: 1600/3112 cut-off events. [2024-11-09 15:12:19,629 INFO L125 PetriNetUnfolderBase]: For 7192/7230 co-relation queries the response was YES. [2024-11-09 15:12:19,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10449 conditions, 3112 events. 1600/3112 cut-off events. For 7192/7230 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 17561 event pairs, 251 based on Foata normal form. 111/3111 useless extension candidates. Maximal degree in co-relation 10424. Up to 897 conditions per place. [2024-11-09 15:12:19,647 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 144 selfloop transitions, 7 changer transitions 0/155 dead transitions. [2024-11-09 15:12:19,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 155 transitions, 1446 flow [2024-11-09 15:12:19,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 15:12:19,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 15:12:19,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 96 transitions. [2024-11-09 15:12:19,648 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-09 15:12:19,649 INFO L175 Difference]: Start difference. First operand has 67 places, 53 transitions, 354 flow. Second operand 6 states and 96 transitions. [2024-11-09 15:12:19,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 155 transitions, 1446 flow [2024-11-09 15:12:19,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 155 transitions, 1389 flow, removed 27 selfloop flow, removed 1 redundant places. [2024-11-09 15:12:19,658 INFO L231 Difference]: Finished difference. Result has 70 places, 52 transitions, 350 flow [2024-11-09 15:12:19,658 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=65, 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=350, PETRI_PLACES=70, PETRI_TRANSITIONS=52} [2024-11-09 15:12:19,658 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 37 predicate places. [2024-11-09 15:12:19,658 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 52 transitions, 350 flow [2024-11-09 15:12:19,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 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) [2024-11-09 15:12:19,659 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:12:19,659 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:12:19,673 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 15:12:19,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:12:19,860 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-09 15:12:19,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:12:19,860 INFO L85 PathProgramCache]: Analyzing trace with hash -370936087, now seen corresponding path program 1 times [2024-11-09 15:12:19,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:12:19,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993110386] [2024-11-09 15:12:19,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:12:19,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:12:19,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:12:19,904 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:12:19,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:12:19,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993110386] [2024-11-09 15:12:19,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993110386] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:12:19,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573718501] [2024-11-09 15:12:19,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:12:19,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:12:19,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:12:19,906 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) [2024-11-09 15:12:19,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 15:12:19,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:12:19,949 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:12:19,950 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:12:19,971 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:12:19,971 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:12:20,005 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:12:20,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573718501] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:12:20,006 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:12:20,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-09 15:12:20,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296097509] [2024-11-09 15:12:20,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:12:20,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 15:12:20,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:12:20,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 15:12:20,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-09 15:12:20,023 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-11-09 15:12:20,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 52 transitions, 350 flow. Second operand has 12 states, 12 states have (on average 9.833333333333334) internal successors, (118), 12 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:12:20,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:12:20,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-11-09 15:12:20,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:12:20,508 INFO L124 PetriNetUnfolderBase]: 2870/5405 cut-off events. [2024-11-09 15:12:20,508 INFO L125 PetriNetUnfolderBase]: For 13472/13578 co-relation queries the response was YES. [2024-11-09 15:12:20,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19155 conditions, 5405 events. 2870/5405 cut-off events. For 13472/13578 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 32193 event pairs, 629 based on Foata normal form. 243/5647 useless extension candidates. Maximal degree in co-relation 19130. Up to 1842 conditions per place. [2024-11-09 15:12:20,536 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 243 selfloop transitions, 13 changer transitions 6/266 dead transitions. [2024-11-09 15:12:20,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 266 transitions, 2462 flow [2024-11-09 15:12:20,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 15:12:20,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 15:12:20,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-11-09 15:12:20,537 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.528125 [2024-11-09 15:12:20,538 INFO L175 Difference]: Start difference. First operand has 70 places, 52 transitions, 350 flow. Second operand 10 states and 169 transitions. [2024-11-09 15:12:20,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 266 transitions, 2462 flow [2024-11-09 15:12:20,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 266 transitions, 2432 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-11-09 15:12:20,552 INFO L231 Difference]: Finished difference. Result has 78 places, 60 transitions, 413 flow [2024-11-09 15:12:20,552 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=335, 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=10, PETRI_FLOW=413, PETRI_PLACES=78, PETRI_TRANSITIONS=60} [2024-11-09 15:12:20,552 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 45 predicate places. [2024-11-09 15:12:20,552 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 60 transitions, 413 flow [2024-11-09 15:12:20,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.833333333333334) internal successors, (118), 12 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:12:20,552 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:12:20,553 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1] [2024-11-09 15:12:20,570 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 15:12:20,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:12:20,753 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-09 15:12:20,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:12:20,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1310678851, now seen corresponding path program 2 times [2024-11-09 15:12:20,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:12:20,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839404567] [2024-11-09 15:12:20,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:12:20,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:12:20,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:12:20,839 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:12:20,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:12:20,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839404567] [2024-11-09 15:12:20,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839404567] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:12:20,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563203451] [2024-11-09 15:12:20,839 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 15:12:20,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:12:20,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:12:20,841 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) [2024-11-09 15:12:20,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 15:12:20,872 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-09 15:12:20,873 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 15:12:20,873 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 15:12:20,874 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:12:20,930 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-09 15:12:20,930 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:12:20,971 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-09 15:12:20,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563203451] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:12:20,972 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:12:20,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 3, 3] total 14 [2024-11-09 15:12:20,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868527201] [2024-11-09 15:12:20,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:12:20,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 15:12:20,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:12:20,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 15:12:20,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-09 15:12:20,996 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-11-09 15:12:20,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 60 transitions, 413 flow. Second operand has 15 states, 15 states have (on average 8.266666666666667) internal successors, (124), 15 states have internal predecessors, (124), 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) [2024-11-09 15:12:20,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:12:20,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-11-09 15:12:20,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:12:21,812 INFO L124 PetriNetUnfolderBase]: 4196/7409 cut-off events. [2024-11-09 15:12:21,812 INFO L125 PetriNetUnfolderBase]: For 22314/22394 co-relation queries the response was YES. [2024-11-09 15:12:21,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26048 conditions, 7409 events. 4196/7409 cut-off events. For 22314/22394 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 43102 event pairs, 274 based on Foata normal form. 310/7719 useless extension candidates. Maximal degree in co-relation 26021. Up to 1667 conditions per place. [2024-11-09 15:12:21,843 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 304 selfloop transitions, 18 changer transitions 0/325 dead transitions. [2024-11-09 15:12:21,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 325 transitions, 2699 flow [2024-11-09 15:12:21,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 15:12:21,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-09 15:12:21,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 243 transitions. [2024-11-09 15:12:21,845 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.50625 [2024-11-09 15:12:21,845 INFO L175 Difference]: Start difference. First operand has 78 places, 60 transitions, 413 flow. Second operand 15 states and 243 transitions. [2024-11-09 15:12:21,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 325 transitions, 2699 flow [2024-11-09 15:12:21,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 325 transitions, 2564 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-11-09 15:12:21,867 INFO L231 Difference]: Finished difference. Result has 86 places, 64 transitions, 453 flow [2024-11-09 15:12:21,868 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=71, 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=453, PETRI_PLACES=86, PETRI_TRANSITIONS=64} [2024-11-09 15:12:21,868 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 53 predicate places. [2024-11-09 15:12:21,868 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 64 transitions, 453 flow [2024-11-09 15:12:21,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.266666666666667) internal successors, (124), 15 states have internal predecessors, (124), 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) [2024-11-09 15:12:21,868 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:12:21,868 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 6, 6, 1, 1, 1, 1] [2024-11-09 15:12:21,880 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 15:12:22,069 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,SelfDestructingSolverStorable12 [2024-11-09 15:12:22,069 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-09 15:12:22,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:12:22,069 INFO L85 PathProgramCache]: Analyzing trace with hash 424746634, now seen corresponding path program 2 times [2024-11-09 15:12:22,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:12:22,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442338923] [2024-11-09 15:12:22,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:12:22,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:12:22,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:12:22,168 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:12:22,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:12:22,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442338923] [2024-11-09 15:12:22,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442338923] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:12:22,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426194842] [2024-11-09 15:12:22,169 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 15:12:22,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:12:22,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:12:22,170 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) [2024-11-09 15:12:22,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 15:12:22,216 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 15:12:22,216 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 15:12:22,216 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 15:12:22,218 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:12:22,262 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:12:22,263 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:12:22,360 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:12:22,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426194842] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:12:22,360 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:12:22,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-09 15:12:22,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248211218] [2024-11-09 15:12:22,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:12:22,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 15:12:22,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:12:22,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 15:12:22,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2024-11-09 15:12:22,362 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-09 15:12:22,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 64 transitions, 453 flow. Second operand has 17 states, 17 states have (on average 11.823529411764707) internal successors, (201), 17 states have internal predecessors, (201), 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) [2024-11-09 15:12:22,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:12:22,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-09 15:12:22,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:12:23,833 INFO L124 PetriNetUnfolderBase]: 7900/15186 cut-off events. [2024-11-09 15:12:23,833 INFO L125 PetriNetUnfolderBase]: For 66915/67347 co-relation queries the response was YES. [2024-11-09 15:12:23,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55458 conditions, 15186 events. 7900/15186 cut-off events. For 66915/67347 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 104275 event pairs, 202 based on Foata normal form. 667/15852 useless extension candidates. Maximal degree in co-relation 55432. Up to 3123 conditions per place. [2024-11-09 15:12:23,903 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 414 selfloop transitions, 58 changer transitions 9/486 dead transitions. [2024-11-09 15:12:23,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 486 transitions, 3993 flow [2024-11-09 15:12:23,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-09 15:12:23,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-09 15:12:23,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 383 transitions. [2024-11-09 15:12:23,904 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7040441176470589 [2024-11-09 15:12:23,904 INFO L175 Difference]: Start difference. First operand has 86 places, 64 transitions, 453 flow. Second operand 17 states and 383 transitions. [2024-11-09 15:12:23,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 486 transitions, 3993 flow [2024-11-09 15:12:23,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 486 transitions, 3724 flow, removed 68 selfloop flow, removed 11 redundant places. [2024-11-09 15:12:23,964 INFO L231 Difference]: Finished difference. Result has 105 places, 106 transitions, 1005 flow [2024-11-09 15:12:23,964 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=75, 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=1005, PETRI_PLACES=105, PETRI_TRANSITIONS=106} [2024-11-09 15:12:23,964 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 72 predicate places. [2024-11-09 15:12:23,965 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 106 transitions, 1005 flow [2024-11-09 15:12:23,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 11.823529411764707) internal successors, (201), 17 states have internal predecessors, (201), 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) [2024-11-09 15:12:23,965 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:12:23,965 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:12:23,978 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-09 15:12:24,165 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,SelfDestructingSolverStorable13 [2024-11-09 15:12:24,166 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-09 15:12:24,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:12:24,166 INFO L85 PathProgramCache]: Analyzing trace with hash -374252390, now seen corresponding path program 2 times [2024-11-09 15:12:24,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:12:24,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123994294] [2024-11-09 15:12:24,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:12:24,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:12:24,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:12:24,298 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 4 proven. 83 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:12:24,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:12:24,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123994294] [2024-11-09 15:12:24,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123994294] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:12:24,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246418584] [2024-11-09 15:12:24,299 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 15:12:24,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:12:24,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:12:24,301 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) [2024-11-09 15:12:24,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 15:12:24,336 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-09 15:12:24,337 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 15:12:24,341 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 15:12:24,342 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:12:24,402 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-09 15:12:24,402 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:12:24,467 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-09 15:12:24,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246418584] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:12:24,468 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:12:24,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 3, 3] total 14 [2024-11-09 15:12:24,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109058521] [2024-11-09 15:12:24,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:12:24,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 15:12:24,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:12:24,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 15:12:24,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-09 15:12:24,482 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-11-09 15:12:24,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 106 transitions, 1005 flow. Second operand has 15 states, 15 states have (on average 10.733333333333333) internal successors, (161), 15 states have internal predecessors, (161), 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) [2024-11-09 15:12:24,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:12:24,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-11-09 15:12:24,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:12:26,438 INFO L124 PetriNetUnfolderBase]: 9727/18037 cut-off events. [2024-11-09 15:12:26,439 INFO L125 PetriNetUnfolderBase]: For 74161/74941 co-relation queries the response was YES. [2024-11-09 15:12:26,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67258 conditions, 18037 events. 9727/18037 cut-off events. For 74161/74941 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 125354 event pairs, 678 based on Foata normal form. 1223/19259 useless extension candidates. Maximal degree in co-relation 67218. Up to 3302 conditions per place. [2024-11-09 15:12:26,523 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 636 selfloop transitions, 22 changer transitions 38/700 dead transitions. [2024-11-09 15:12:26,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 700 transitions, 8806 flow [2024-11-09 15:12:26,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 15:12:26,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-09 15:12:26,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 237 transitions. [2024-11-09 15:12:26,528 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49375 [2024-11-09 15:12:26,528 INFO L175 Difference]: Start difference. First operand has 105 places, 106 transitions, 1005 flow. Second operand 15 states and 237 transitions. [2024-11-09 15:12:26,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 700 transitions, 8806 flow [2024-11-09 15:12:26,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 700 transitions, 7922 flow, removed 387 selfloop flow, removed 8 redundant places. [2024-11-09 15:12:26,634 INFO L231 Difference]: Finished difference. Result has 111 places, 108 transitions, 976 flow [2024-11-09 15:12:26,635 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=893, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=976, PETRI_PLACES=111, PETRI_TRANSITIONS=108} [2024-11-09 15:12:26,635 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 78 predicate places. [2024-11-09 15:12:26,635 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 108 transitions, 976 flow [2024-11-09 15:12:26,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 10.733333333333333) internal successors, (161), 15 states have internal predecessors, (161), 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) [2024-11-09 15:12:26,635 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:12:26,635 INFO L204 CegarLoopForPetriNet]: trace histogram [15, 14, 14, 14, 14, 1, 1, 1, 1] [2024-11-09 15:12:26,648 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-09 15:12:26,839 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,SelfDestructingSolverStorable14 [2024-11-09 15:12:26,840 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-09 15:12:26,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:12:26,840 INFO L85 PathProgramCache]: Analyzing trace with hash 245536522, now seen corresponding path program 3 times [2024-11-09 15:12:26,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:12:26,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958890107] [2024-11-09 15:12:26,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:12:26,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:12:26,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:12:27,220 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:12:27,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:12:27,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958890107] [2024-11-09 15:12:27,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958890107] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:12:27,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304590881] [2024-11-09 15:12:27,221 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 15:12:27,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:12:27,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:12:27,222 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) [2024-11-09 15:12:27,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 15:12:27,278 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2024-11-09 15:12:27,278 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 15:12:27,280 INFO L255 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-09 15:12:27,282 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:12:27,385 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:12:27,385 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:12:27,693 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:12:27,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304590881] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:12:27,693 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:12:27,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2024-11-09 15:12:27,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523693557] [2024-11-09 15:12:27,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:12:27,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-09 15:12:27,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:12:27,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-09 15:12:27,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2024-11-09 15:12:27,696 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-09 15:12:27,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 108 transitions, 976 flow. Second operand has 33 states, 33 states have (on average 11.909090909090908) internal successors, (393), 33 states have internal predecessors, (393), 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) [2024-11-09 15:12:27,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:12:27,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-09 15:12:27,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:12:32,463 INFO L124 PetriNetUnfolderBase]: 19082/37565 cut-off events. [2024-11-09 15:12:32,464 INFO L125 PetriNetUnfolderBase]: For 373127/373169 co-relation queries the response was YES. [2024-11-09 15:12:32,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139952 conditions, 37565 events. 19082/37565 cut-off events. For 373127/373169 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 279269 event pairs, 263 based on Foata normal form. 1180/38744 useless extension candidates. Maximal degree in co-relation 139917. Up to 6515 conditions per place. [2024-11-09 15:12:32,712 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 885 selfloop transitions, 214 changer transitions 0/1103 dead transitions. [2024-11-09 15:12:32,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 1103 transitions, 10325 flow [2024-11-09 15:12:32,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-09 15:12:32,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2024-11-09 15:12:32,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 705 transitions. [2024-11-09 15:12:32,714 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6676136363636364 [2024-11-09 15:12:32,715 INFO L175 Difference]: Start difference. First operand has 111 places, 108 transitions, 976 flow. Second operand 33 states and 705 transitions. [2024-11-09 15:12:32,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 1103 transitions, 10325 flow [2024-11-09 15:12:32,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 1103 transitions, 8674 flow, removed 217 selfloop flow, removed 12 redundant places. [2024-11-09 15:12:32,861 INFO L231 Difference]: Finished difference. Result has 159 places, 264 transitions, 3063 flow [2024-11-09 15:12:32,861 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=914, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=3063, PETRI_PLACES=159, PETRI_TRANSITIONS=264} [2024-11-09 15:12:32,862 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 126 predicate places. [2024-11-09 15:12:32,862 INFO L471 AbstractCegarLoop]: Abstraction has has 159 places, 264 transitions, 3063 flow [2024-11-09 15:12:32,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 11.909090909090908) internal successors, (393), 33 states have internal predecessors, (393), 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) [2024-11-09 15:12:32,862 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:12:32,862 INFO L204 CegarLoopForPetriNet]: trace histogram [31, 30, 30, 30, 30, 1, 1, 1, 1] [2024-11-09 15:12:32,874 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-09 15:12:33,062 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,SelfDestructingSolverStorable15 [2024-11-09 15:12:33,063 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-09 15:12:33,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:12:33,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1266550794, now seen corresponding path program 4 times [2024-11-09 15:12:33,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:12:33,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219461251] [2024-11-09 15:12:33,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:12:33,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:12:33,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:12:34,248 INFO L134 CoverageAnalysis]: Checked inductivity of 2235 backedges. 0 proven. 2235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:12:34,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:12:34,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219461251] [2024-11-09 15:12:34,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219461251] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:12:34,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026762096] [2024-11-09 15:12:34,249 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 15:12:34,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:12:34,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:12:34,250 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) [2024-11-09 15:12:34,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 15:12:34,317 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 15:12:34,317 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 15:12:34,319 INFO L255 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-09 15:12:34,321 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:12:34,475 INFO L134 CoverageAnalysis]: Checked inductivity of 2235 backedges. 0 proven. 2235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:12:34,475 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:12:35,366 INFO L134 CoverageAnalysis]: Checked inductivity of 2235 backedges. 0 proven. 2235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:12:35,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2026762096] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:12:35,366 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:12:35,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 63 [2024-11-09 15:12:35,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399758795] [2024-11-09 15:12:35,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:12:35,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-11-09 15:12:35,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:12:35,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-11-09 15:12:35,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2024-11-09 15:12:35,370 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-09 15:12:35,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 264 transitions, 3063 flow. Second operand has 65 states, 65 states have (on average 11.953846153846154) internal successors, (777), 65 states have internal predecessors, (777), 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) [2024-11-09 15:12:35,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:12:35,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-09 15:12:35,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:12:54,865 INFO L124 PetriNetUnfolderBase]: 49007/97566 cut-off events. [2024-11-09 15:12:54,866 INFO L125 PetriNetUnfolderBase]: For 3168371/3168407 co-relation queries the response was YES. [2024-11-09 15:12:55,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 350820 conditions, 97566 events. 49007/97566 cut-off events. For 3168371/3168407 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 777054 event pairs, 715 based on Foata normal form. 2236/99801 useless extension candidates. Maximal degree in co-relation 350755. Up to 16915 conditions per place. [2024-11-09 15:12:55,911 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 1749 selfloop transitions, 786 changer transitions 0/2539 dead transitions. [2024-11-09 15:12:55,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 2539 transitions, 23227 flow [2024-11-09 15:12:55,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2024-11-09 15:12:55,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2024-11-09 15:12:55,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 1409 transitions. [2024-11-09 15:12:55,914 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6774038461538462 [2024-11-09 15:12:55,914 INFO L175 Difference]: Start difference. First operand has 159 places, 264 transitions, 3063 flow. Second operand 65 states and 1409 transitions. [2024-11-09 15:12:55,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 2539 transitions, 23227 flow [2024-11-09 15:12:56,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 2539 transitions, 21401 flow, removed 873 selfloop flow, removed 7 redundant places. [2024-11-09 15:12:56,805 INFO L231 Difference]: Finished difference. Result has 278 places, 836 transitions, 10636 flow [2024-11-09 15:12:56,806 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2831, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=217, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=65, PETRI_FLOW=10636, PETRI_PLACES=278, PETRI_TRANSITIONS=836} [2024-11-09 15:12:56,806 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 245 predicate places. [2024-11-09 15:12:56,806 INFO L471 AbstractCegarLoop]: Abstraction has has 278 places, 836 transitions, 10636 flow [2024-11-09 15:12:56,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 11.953846153846154) internal successors, (777), 65 states have internal predecessors, (777), 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) [2024-11-09 15:12:56,806 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:12:56,807 INFO L204 CegarLoopForPetriNet]: trace histogram [63, 62, 62, 62, 62, 1, 1, 1, 1] [2024-11-09 15:12:56,820 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-09 15:12:57,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-09 15:12:57,007 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-09 15:12:57,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:12:57,008 INFO L85 PathProgramCache]: Analyzing trace with hash -870913526, now seen corresponding path program 5 times [2024-11-09 15:12:57,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:12:57,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126445495] [2024-11-09 15:12:57,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:12:57,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:12:57,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:00,296 INFO L134 CoverageAnalysis]: Checked inductivity of 9579 backedges. 0 proven. 9579 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:00,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:13:00,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126445495] [2024-11-09 15:13:00,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126445495] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:13:00,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853056885] [2024-11-09 15:13:00,297 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 15:13:00,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:13:00,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:13:00,299 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:13:00,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 15:13:00,458 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 63 check-sat command(s) [2024-11-09 15:13:00,458 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 15:13:00,462 INFO L255 TraceCheckSpWp]: Trace formula consists of 852 conjuncts, 127 conjuncts are in the unsatisfiable core [2024-11-09 15:13:00,467 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:13:00,734 INFO L134 CoverageAnalysis]: Checked inductivity of 9579 backedges. 0 proven. 9579 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:00,734 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:13:03,988 INFO L134 CoverageAnalysis]: Checked inductivity of 9579 backedges. 0 proven. 9579 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:03,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853056885] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:13:03,989 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:13:03,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63, 63] total 127 [2024-11-09 15:13:03,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367889415] [2024-11-09 15:13:03,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:13:03,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 129 states [2024-11-09 15:13:03,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:13:03,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2024-11-09 15:13:03,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2024-11-09 15:13:03,997 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-09 15:13:03,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 836 transitions, 10636 flow. Second operand has 129 states, 129 states have (on average 11.976744186046512) internal successors, (1545), 129 states have internal predecessors, (1545), 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) [2024-11-09 15:13:03,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:13:03,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-09 15:13:03,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand