./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8be7027f 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/pthread-ext/28_buggy_simple_loop1_vf.i -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 f7757e6e73d857d492b029f13f86cb5d550622238e5a2b483c58ab6fc3ffdeb1 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 20:28:38,702 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 20:28:38,755 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-12 20:28:38,760 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 20:28:38,760 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 20:28:38,784 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 20:28:38,786 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 20:28:38,786 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 20:28:38,787 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 20:28:38,790 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 20:28:38,791 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 20:28:38,791 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 20:28:38,791 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 20:28:38,792 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 20:28:38,792 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 20:28:38,792 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 20:28:38,793 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-12 20:28:38,793 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 20:28:38,794 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 20:28:38,794 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 20:28:38,794 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 20:28:38,795 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-12 20:28:38,795 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 20:28:38,795 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-12 20:28:38,795 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 20:28:38,797 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-12 20:28:38,797 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-12 20:28:38,797 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 20:28:38,797 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 20:28:38,797 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 20:28:38,798 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 20:28:38,798 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 20:28:38,798 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 20:28:38,798 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 20:28:38,798 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 20:28:38,799 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 20:28:38,799 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 20:28:38,799 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-12 20:28:38,800 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 20:28:38,800 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 20:28:38,800 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 20:28:38,800 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 20:28:38,800 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 20:28:38,801 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 20:28:38,801 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f7757e6e73d857d492b029f13f86cb5d550622238e5a2b483c58ab6fc3ffdeb1 [2024-11-12 20:28:39,002 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 20:28:39,027 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 20:28:39,031 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 20:28:39,032 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 20:28:39,032 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 20:28:39,033 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i [2024-11-12 20:28:40,370 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 20:28:40,574 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 20:28:40,574 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i [2024-11-12 20:28:40,587 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/476c2434f/2f58a57bb0d74643865757a687f75c6e/FLAGe57e91514 [2024-11-12 20:28:40,948 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/476c2434f/2f58a57bb0d74643865757a687f75c6e [2024-11-12 20:28:40,950 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 20:28:40,951 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 20:28:40,956 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 20:28:40,957 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 20:28:40,961 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 20:28:40,961 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:28:40" (1/1) ... [2024-11-12 20:28:40,962 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f50466c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:28:40, skipping insertion in model container [2024-11-12 20:28:40,962 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:28:40" (1/1) ... [2024-11-12 20:28:41,010 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 20:28:41,355 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 20:28:41,362 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 20:28:41,410 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 20:28:41,441 INFO L204 MainTranslator]: Completed translation [2024-11-12 20:28:41,442 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:28:41 WrapperNode [2024-11-12 20:28:41,442 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 20:28:41,443 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 20:28:41,443 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 20:28:41,443 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 20:28:41,449 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:28:41" (1/1) ... [2024-11-12 20:28:41,461 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:28:41" (1/1) ... [2024-11-12 20:28:41,477 INFO L138 Inliner]: procedures = 166, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 74 [2024-11-12 20:28:41,478 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 20:28:41,479 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 20:28:41,479 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 20:28:41,479 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 20:28:41,488 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:28:41" (1/1) ... [2024-11-12 20:28:41,489 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:28:41" (1/1) ... [2024-11-12 20:28:41,492 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:28:41" (1/1) ... [2024-11-12 20:28:41,511 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]. [2024-11-12 20:28:41,512 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:28:41" (1/1) ... [2024-11-12 20:28:41,512 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:28:41" (1/1) ... [2024-11-12 20:28:41,517 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:28:41" (1/1) ... [2024-11-12 20:28:41,519 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:28:41" (1/1) ... [2024-11-12 20:28:41,520 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:28:41" (1/1) ... [2024-11-12 20:28:41,520 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:28:41" (1/1) ... [2024-11-12 20:28:41,522 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 20:28:41,523 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 20:28:41,523 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 20:28:41,523 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 20:28:41,524 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:28:41" (1/1) ... [2024-11-12 20:28:41,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 20:28:41,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:28:41,568 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) [2024-11-12 20:28:41,577 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 [2024-11-12 20:28:41,639 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-12 20:28:41,639 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-12 20:28:41,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 20:28:41,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 20:28:41,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 20:28:41,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 20:28:41,641 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-12 20:28:41,768 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 20:28:41,770 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 20:28:41,892 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 20:28:41,892 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 20:28:41,969 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 20:28:41,969 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-12 20:28:41,970 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:28:41 BoogieIcfgContainer [2024-11-12 20:28:41,970 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 20:28:41,971 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 20:28:41,971 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 20:28:41,974 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 20:28:41,974 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 08:28:40" (1/3) ... [2024-11-12 20:28:41,974 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b38bc13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:28:41, skipping insertion in model container [2024-11-12 20:28:41,975 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:28:41" (2/3) ... [2024-11-12 20:28:41,975 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b38bc13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:28:41, skipping insertion in model container [2024-11-12 20:28:41,975 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:28:41" (3/3) ... [2024-11-12 20:28:41,976 INFO L112 eAbstractionObserver]: Analyzing ICFG 28_buggy_simple_loop1_vf.i [2024-11-12 20:28:41,987 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 20:28:41,987 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-12 20:28:41,987 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 20:28:42,041 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-12 20:28:42,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 35 transitions, 74 flow [2024-11-12 20:28:42,081 INFO L124 PetriNetUnfolderBase]: 5/37 cut-off events. [2024-11-12 20:28:42,082 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 20:28:42,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 37 events. 5/37 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 76 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 32. Up to 2 conditions per place. [2024-11-12 20:28:42,086 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 35 transitions, 74 flow [2024-11-12 20:28:42,089 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 35 transitions, 74 flow [2024-11-12 20:28:42,096 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 20:28:42,100 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;@3fa78d05, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 20:28:42,101 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-11-12 20:28:42,104 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 20:28:42,104 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2024-11-12 20:28:42,104 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 20:28:42,104 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:28:42,105 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-12 20:28:42,105 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-12 20:28:42,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:28:42,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1700405344, now seen corresponding path program 1 times [2024-11-12 20:28:42,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:28:42,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638607133] [2024-11-12 20:28:42,116 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:28:42,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:28:42,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:28:42,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:28:42,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:28:42,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638607133] [2024-11-12 20:28:42,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638607133] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:28:42,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:28:42,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:28:42,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377030190] [2024-11-12 20:28:42,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:28:42,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 20:28:42,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:28:42,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:28:42,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 20:28:42,332 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 35 [2024-11-12 20:28:42,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 35 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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) [2024-11-12 20:28:42,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:28:42,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 35 [2024-11-12 20:28:42,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:28:42,419 INFO L124 PetriNetUnfolderBase]: 57/201 cut-off events. [2024-11-12 20:28:42,419 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 20:28:42,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 201 events. 57/201 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 880 event pairs, 20 based on Foata normal form. 9/174 useless extension candidates. Maximal degree in co-relation 300. Up to 65 conditions per place. [2024-11-12 20:28:42,422 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 27 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2024-11-12 20:28:42,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 45 transitions, 152 flow [2024-11-12 20:28:42,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:28:42,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 20:28:42,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 83 transitions. [2024-11-12 20:28:42,432 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7904761904761904 [2024-11-12 20:28:42,433 INFO L175 Difference]: Start difference. First operand has 33 places, 35 transitions, 74 flow. Second operand 3 states and 83 transitions. [2024-11-12 20:28:42,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 45 transitions, 152 flow [2024-11-12 20:28:42,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 45 transitions, 152 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-12 20:28:42,437 INFO L231 Difference]: Finished difference. Result has 35 places, 34 transitions, 84 flow [2024-11-12 20:28:42,438 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=35, PETRI_TRANSITIONS=34} [2024-11-12 20:28:42,442 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 2 predicate places. [2024-11-12 20:28:42,442 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 34 transitions, 84 flow [2024-11-12 20:28:42,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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) [2024-11-12 20:28:42,443 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:28:42,443 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-12 20:28:42,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 20:28:42,444 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-12 20:28:42,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:28:42,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1700430800, now seen corresponding path program 1 times [2024-11-12 20:28:42,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:28:42,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520468723] [2024-11-12 20:28:42,446 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:28:42,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:28:42,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:28:42,474 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 20:28:42,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:28:42,493 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 20:28:42,493 INFO L339 BasicCegarLoop]: Counterexample is feasible [2024-11-12 20:28:42,495 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2024-11-12 20:28:42,496 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2024-11-12 20:28:42,496 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2024-11-12 20:28:42,496 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2024-11-12 20:28:42,497 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2024-11-12 20:28:42,497 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2024-11-12 20:28:42,497 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2024-11-12 20:28:42,497 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2024-11-12 20:28:42,497 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2024-11-12 20:28:42,498 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2024-11-12 20:28:42,498 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2024-11-12 20:28:42,498 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2024-11-12 20:28:42,498 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2024-11-12 20:28:42,498 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2024-11-12 20:28:42,499 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2024-11-12 20:28:42,499 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2024-11-12 20:28:42,499 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2024-11-12 20:28:42,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-12 20:28:42,499 INFO L421 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-12 20:28:42,501 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-12 20:28:42,501 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-12 20:28:42,534 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-12 20:28:42,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 60 places, 65 transitions, 140 flow [2024-11-12 20:28:42,546 INFO L124 PetriNetUnfolderBase]: 10/70 cut-off events. [2024-11-12 20:28:42,546 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-12 20:28:42,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 70 events. 10/70 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 224 event pairs, 0 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 61. Up to 3 conditions per place. [2024-11-12 20:28:42,547 INFO L82 GeneralOperation]: Start removeDead. Operand has 60 places, 65 transitions, 140 flow [2024-11-12 20:28:42,548 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 65 transitions, 140 flow [2024-11-12 20:28:42,549 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 20:28:42,550 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;@3fa78d05, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 20:28:42,550 INFO L334 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2024-11-12 20:28:42,552 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 20:28:42,569 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2024-11-12 20:28:42,569 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-12 20:28:42,569 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:28:42,569 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-12 20:28:42,569 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-12 20:28:42,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:28:42,570 INFO L85 PathProgramCache]: Analyzing trace with hash 223412032, now seen corresponding path program 1 times [2024-11-12 20:28:42,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:28:42,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304544499] [2024-11-12 20:28:42,571 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:28:42,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:28:42,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:28:42,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:28:42,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:28:42,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304544499] [2024-11-12 20:28:42,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304544499] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:28:42,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:28:42,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:28:42,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057035873] [2024-11-12 20:28:42,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:28:42,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 20:28:42,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:28:42,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:28:42,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 20:28:42,638 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 65 [2024-11-12 20:28:42,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 65 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 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) [2024-11-12 20:28:42,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:28:42,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 65 [2024-11-12 20:28:42,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:28:42,942 INFO L124 PetriNetUnfolderBase]: 1201/2849 cut-off events. [2024-11-12 20:28:42,942 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2024-11-12 20:28:42,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4631 conditions, 2849 events. 1201/2849 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 22110 event pairs, 520 based on Foata normal form. 174/2526 useless extension candidates. Maximal degree in co-relation 3450. Up to 988 conditions per place. [2024-11-12 20:28:42,964 INFO L140 encePairwiseOnDemand]: 58/65 looper letters, 51 selfloop transitions, 2 changer transitions 0/86 dead transitions. [2024-11-12 20:28:42,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 86 transitions, 293 flow [2024-11-12 20:28:42,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:28:42,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 20:28:42,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 160 transitions. [2024-11-12 20:28:42,966 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8205128205128205 [2024-11-12 20:28:42,967 INFO L175 Difference]: Start difference. First operand has 60 places, 65 transitions, 140 flow. Second operand 3 states and 160 transitions. [2024-11-12 20:28:42,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 86 transitions, 293 flow [2024-11-12 20:28:42,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 86 transitions, 293 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-12 20:28:42,970 INFO L231 Difference]: Finished difference. Result has 62 places, 63 transitions, 148 flow [2024-11-12 20:28:42,970 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=62, PETRI_TRANSITIONS=63} [2024-11-12 20:28:42,971 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, 2 predicate places. [2024-11-12 20:28:42,971 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 63 transitions, 148 flow [2024-11-12 20:28:42,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 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) [2024-11-12 20:28:42,972 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:28:42,972 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-11-12 20:28:42,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-12 20:28:42,972 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-12 20:28:42,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:28:42,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1148426867, now seen corresponding path program 1 times [2024-11-12 20:28:42,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:28:42,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463867352] [2024-11-12 20:28:42,974 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:28:42,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:28:42,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:28:42,993 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 20:28:43,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:28:43,004 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 20:28:43,006 INFO L339 BasicCegarLoop]: Counterexample is feasible [2024-11-12 20:28:43,006 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2024-11-12 20:28:43,006 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 25 remaining) [2024-11-12 20:28:43,007 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 25 remaining) [2024-11-12 20:28:43,007 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 25 remaining) [2024-11-12 20:28:43,007 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 25 remaining) [2024-11-12 20:28:43,007 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 25 remaining) [2024-11-12 20:28:43,007 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 25 remaining) [2024-11-12 20:28:43,007 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 25 remaining) [2024-11-12 20:28:43,008 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 25 remaining) [2024-11-12 20:28:43,008 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 25 remaining) [2024-11-12 20:28:43,009 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 25 remaining) [2024-11-12 20:28:43,009 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 25 remaining) [2024-11-12 20:28:43,009 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 25 remaining) [2024-11-12 20:28:43,009 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 25 remaining) [2024-11-12 20:28:43,009 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 25 remaining) [2024-11-12 20:28:43,009 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 25 remaining) [2024-11-12 20:28:43,010 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 25 remaining) [2024-11-12 20:28:43,011 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 25 remaining) [2024-11-12 20:28:43,011 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 25 remaining) [2024-11-12 20:28:43,011 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 25 remaining) [2024-11-12 20:28:43,011 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 25 remaining) [2024-11-12 20:28:43,011 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 25 remaining) [2024-11-12 20:28:43,011 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 25 remaining) [2024-11-12 20:28:43,012 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 25 remaining) [2024-11-12 20:28:43,012 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 25 remaining) [2024-11-12 20:28:43,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-12 20:28:43,012 INFO L421 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-12 20:28:43,013 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-12 20:28:43,016 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-12 20:28:43,060 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-12 20:28:43,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 95 transitions, 208 flow [2024-11-12 20:28:43,071 INFO L124 PetriNetUnfolderBase]: 15/103 cut-off events. [2024-11-12 20:28:43,071 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-12 20:28:43,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 103 events. 15/103 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 393 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 90. Up to 4 conditions per place. [2024-11-12 20:28:43,072 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 95 transitions, 208 flow [2024-11-12 20:28:43,074 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 87 places, 95 transitions, 208 flow [2024-11-12 20:28:43,075 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 20:28:43,076 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;@3fa78d05, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 20:28:43,076 INFO L334 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2024-11-12 20:28:43,077 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 20:28:43,078 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-11-12 20:28:43,078 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-12 20:28:43,078 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:28:43,078 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-12 20:28:43,078 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-11-12 20:28:43,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:28:43,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1260263005, now seen corresponding path program 1 times [2024-11-12 20:28:43,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:28:43,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137637364] [2024-11-12 20:28:43,081 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:28:43,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:28:43,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:28:43,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:28:43,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:28:43,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137637364] [2024-11-12 20:28:43,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137637364] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:28:43,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:28:43,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:28:43,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731541930] [2024-11-12 20:28:43,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:28:43,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 20:28:43,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:28:43,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:28:43,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 20:28:43,143 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 95 [2024-11-12 20:28:43,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 95 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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) [2024-11-12 20:28:43,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:28:43,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 95 [2024-11-12 20:28:43,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:28:45,391 INFO L124 PetriNetUnfolderBase]: 17164/33006 cut-off events. [2024-11-12 20:28:45,393 INFO L125 PetriNetUnfolderBase]: For 1133/1133 co-relation queries the response was YES. [2024-11-12 20:28:45,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55597 conditions, 33006 events. 17164/33006 cut-off events. For 1133/1133 co-relation queries the response was YES. Maximal size of possible extension queue 1468. Compared 325695 event pairs, 6856 based on Foata normal form. 2572/30093 useless extension candidates. Maximal degree in co-relation 13335. Up to 12562 conditions per place. [2024-11-12 20:28:45,650 INFO L140 encePairwiseOnDemand]: 87/95 looper letters, 75 selfloop transitions, 2 changer transitions 0/127 dead transitions. [2024-11-12 20:28:45,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 127 transitions, 438 flow [2024-11-12 20:28:45,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:28:45,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 20:28:45,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 237 transitions. [2024-11-12 20:28:45,655 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8315789473684211 [2024-11-12 20:28:45,657 INFO L175 Difference]: Start difference. First operand has 87 places, 95 transitions, 208 flow. Second operand 3 states and 237 transitions. [2024-11-12 20:28:45,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 127 transitions, 438 flow [2024-11-12 20:28:45,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 127 transitions, 434 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-11-12 20:28:45,662 INFO L231 Difference]: Finished difference. Result has 89 places, 92 transitions, 212 flow [2024-11-12 20:28:45,663 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=212, PETRI_PLACES=89, PETRI_TRANSITIONS=92} [2024-11-12 20:28:45,664 INFO L279 CegarLoopForPetriNet]: 87 programPoint places, 2 predicate places. [2024-11-12 20:28:45,664 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 92 transitions, 212 flow [2024-11-12 20:28:45,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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) [2024-11-12 20:28:45,665 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:28:45,665 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:28:45,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-12 20:28:45,666 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-11-12 20:28:45,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:28:45,667 INFO L85 PathProgramCache]: Analyzing trace with hash 494884031, now seen corresponding path program 1 times [2024-11-12 20:28:45,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:28:45,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582032748] [2024-11-12 20:28:45,667 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:28:45,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:28:45,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:28:45,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:28:45,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:28:45,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582032748] [2024-11-12 20:28:45,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582032748] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:28:45,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:28:45,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:28:45,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927055722] [2024-11-12 20:28:45,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:28:45,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 20:28:45,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:28:45,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:28:45,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 20:28:45,743 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 95 [2024-11-12 20:28:45,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 92 transitions, 212 flow. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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) [2024-11-12 20:28:45,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:28:45,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 95 [2024-11-12 20:28:45,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:28:49,551 INFO L124 PetriNetUnfolderBase]: 32455/60993 cut-off events. [2024-11-12 20:28:49,552 INFO L125 PetriNetUnfolderBase]: For 4096/4096 co-relation queries the response was YES. [2024-11-12 20:28:49,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105609 conditions, 60993 events. 32455/60993 cut-off events. For 4096/4096 co-relation queries the response was YES. Maximal size of possible extension queue 2427. Compared 621297 event pairs, 14152 based on Foata normal form. 510/51685 useless extension candidates. Maximal degree in co-relation 81540. Up to 23776 conditions per place. [2024-11-12 20:28:50,022 INFO L140 encePairwiseOnDemand]: 91/95 looper letters, 76 selfloop transitions, 2 changer transitions 0/128 dead transitions. [2024-11-12 20:28:50,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 128 transitions, 453 flow [2024-11-12 20:28:50,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:28:50,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 20:28:50,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 228 transitions. [2024-11-12 20:28:50,024 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8 [2024-11-12 20:28:50,025 INFO L175 Difference]: Start difference. First operand has 89 places, 92 transitions, 212 flow. Second operand 3 states and 228 transitions. [2024-11-12 20:28:50,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 128 transitions, 453 flow [2024-11-12 20:28:50,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 128 transitions, 449 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 20:28:50,035 INFO L231 Difference]: Finished difference. Result has 91 places, 93 transitions, 224 flow [2024-11-12 20:28:50,035 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=224, PETRI_PLACES=91, PETRI_TRANSITIONS=93} [2024-11-12 20:28:50,037 INFO L279 CegarLoopForPetriNet]: 87 programPoint places, 4 predicate places. [2024-11-12 20:28:50,037 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 93 transitions, 224 flow [2024-11-12 20:28:50,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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) [2024-11-12 20:28:50,038 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:28:50,038 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:28:50,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-12 20:28:50,039 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-11-12 20:28:50,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:28:50,040 INFO L85 PathProgramCache]: Analyzing trace with hash 2109356729, now seen corresponding path program 1 times [2024-11-12 20:28:50,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:28:50,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977253155] [2024-11-12 20:28:50,042 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:28:50,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:28:50,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:28:50,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:28:50,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:28:50,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977253155] [2024-11-12 20:28:50,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977253155] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:28:50,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:28:50,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:28:50,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869275628] [2024-11-12 20:28:50,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:28:50,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:28:50,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:28:50,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:28:50,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:28:50,151 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 95 [2024-11-12 20:28:50,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 93 transitions, 224 flow. Second operand has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 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) [2024-11-12 20:28:50,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:28:50,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 95 [2024-11-12 20:28:50,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:28:53,670 INFO L124 PetriNetUnfolderBase]: 35164/66214 cut-off events. [2024-11-12 20:28:53,670 INFO L125 PetriNetUnfolderBase]: For 6905/6905 co-relation queries the response was YES. [2024-11-12 20:28:53,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118208 conditions, 66214 events. 35164/66214 cut-off events. For 6905/6905 co-relation queries the response was YES. Maximal size of possible extension queue 2673. Compared 686661 event pairs, 17380 based on Foata normal form. 1026/57479 useless extension candidates. Maximal degree in co-relation 111927. Up to 27862 conditions per place. [2024-11-12 20:28:54,038 INFO L140 encePairwiseOnDemand]: 90/95 looper letters, 105 selfloop transitions, 3 changer transitions 0/156 dead transitions. [2024-11-12 20:28:54,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 156 transitions, 602 flow [2024-11-12 20:28:54,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:28:54,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:28:54,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 299 transitions. [2024-11-12 20:28:54,040 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7868421052631579 [2024-11-12 20:28:54,040 INFO L175 Difference]: Start difference. First operand has 91 places, 93 transitions, 224 flow. Second operand 4 states and 299 transitions. [2024-11-12 20:28:54,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 156 transitions, 602 flow [2024-11-12 20:28:54,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 156 transitions, 596 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 20:28:54,049 INFO L231 Difference]: Finished difference. Result has 95 places, 94 transitions, 240 flow [2024-11-12 20:28:54,049 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=240, PETRI_PLACES=95, PETRI_TRANSITIONS=94} [2024-11-12 20:28:54,050 INFO L279 CegarLoopForPetriNet]: 87 programPoint places, 8 predicate places. [2024-11-12 20:28:54,050 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 94 transitions, 240 flow [2024-11-12 20:28:54,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 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) [2024-11-12 20:28:54,053 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:28:54,053 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:28:54,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-12 20:28:54,054 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-11-12 20:28:54,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:28:54,054 INFO L85 PathProgramCache]: Analyzing trace with hash 965548588, now seen corresponding path program 1 times [2024-11-12 20:28:54,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:28:54,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495845726] [2024-11-12 20:28:54,054 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:28:54,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:28:54,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:28:54,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:28:54,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:28:54,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495845726] [2024-11-12 20:28:54,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495845726] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:28:54,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:28:54,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 20:28:54,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609262955] [2024-11-12 20:28:54,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:28:54,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 20:28:54,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:28:54,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 20:28:54,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-12 20:28:54,164 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 95 [2024-11-12 20:28:54,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 94 transitions, 240 flow. Second operand has 5 states, 5 states have (on average 49.6) internal successors, (248), 5 states have internal predecessors, (248), 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) [2024-11-12 20:28:54,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:28:54,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 95 [2024-11-12 20:28:54,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:28:59,695 INFO L124 PetriNetUnfolderBase]: 44518/76865 cut-off events. [2024-11-12 20:28:59,696 INFO L125 PetriNetUnfolderBase]: For 12994/12994 co-relation queries the response was YES. [2024-11-12 20:28:59,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146399 conditions, 76865 events. 44518/76865 cut-off events. For 12994/12994 co-relation queries the response was YES. Maximal size of possible extension queue 2679. Compared 728960 event pairs, 16360 based on Foata normal form. 513/68476 useless extension candidates. Maximal degree in co-relation 141138. Up to 25798 conditions per place. [2024-11-12 20:29:00,217 INFO L140 encePairwiseOnDemand]: 88/95 looper letters, 162 selfloop transitions, 6 changer transitions 0/216 dead transitions. [2024-11-12 20:29:00,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 216 transitions, 888 flow [2024-11-12 20:29:00,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 20:29:00,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 20:29:00,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 452 transitions. [2024-11-12 20:29:00,222 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7929824561403509 [2024-11-12 20:29:00,223 INFO L175 Difference]: Start difference. First operand has 95 places, 94 transitions, 240 flow. Second operand 6 states and 452 transitions. [2024-11-12 20:29:00,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 216 transitions, 888 flow [2024-11-12 20:29:00,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 216 transitions, 884 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 20:29:00,237 INFO L231 Difference]: Finished difference. Result has 102 places, 98 transitions, 277 flow [2024-11-12 20:29:00,240 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=277, PETRI_PLACES=102, PETRI_TRANSITIONS=98} [2024-11-12 20:29:00,240 INFO L279 CegarLoopForPetriNet]: 87 programPoint places, 15 predicate places. [2024-11-12 20:29:00,241 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 98 transitions, 277 flow [2024-11-12 20:29:00,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 49.6) internal successors, (248), 5 states have internal predecessors, (248), 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) [2024-11-12 20:29:00,241 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:29:00,241 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:29:00,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-12 20:29:00,241 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-11-12 20:29:00,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:29:00,242 INFO L85 PathProgramCache]: Analyzing trace with hash -132765411, now seen corresponding path program 1 times [2024-11-12 20:29:00,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:29:00,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067482553] [2024-11-12 20:29:00,242 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:29:00,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:29:00,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:29:00,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:29:00,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:29:00,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067482553] [2024-11-12 20:29:00,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067482553] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:29:00,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:29:00,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 20:29:00,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909800488] [2024-11-12 20:29:00,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:29:00,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 20:29:00,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:29:00,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 20:29:00,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-12 20:29:00,353 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 95 [2024-11-12 20:29:00,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 98 transitions, 277 flow. Second operand has 6 states, 6 states have (on average 48.333333333333336) internal successors, (290), 6 states have internal predecessors, (290), 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) [2024-11-12 20:29:00,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:29:00,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 95 [2024-11-12 20:29:00,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:29:08,323 INFO L124 PetriNetUnfolderBase]: 65236/108657 cut-off events. [2024-11-12 20:29:08,324 INFO L125 PetriNetUnfolderBase]: For 33927/33927 co-relation queries the response was YES. [2024-11-12 20:29:08,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226158 conditions, 108657 events. 65236/108657 cut-off events. For 33927/33927 co-relation queries the response was YES. Maximal size of possible extension queue 3873. Compared 1038250 event pairs, 21952 based on Foata normal form. 1026/98235 useless extension candidates. Maximal degree in co-relation 147692. Up to 39208 conditions per place. [2024-11-12 20:29:09,057 INFO L140 encePairwiseOnDemand]: 86/95 looper letters, 222 selfloop transitions, 12 changer transitions 0/282 dead transitions. [2024-11-12 20:29:09,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 282 transitions, 1249 flow [2024-11-12 20:29:09,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-12 20:29:09,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-12 20:29:09,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 606 transitions. [2024-11-12 20:29:09,059 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7973684210526316 [2024-11-12 20:29:09,059 INFO L175 Difference]: Start difference. First operand has 102 places, 98 transitions, 277 flow. Second operand 8 states and 606 transitions. [2024-11-12 20:29:09,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 282 transitions, 1249 flow [2024-11-12 20:29:09,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 282 transitions, 1249 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-12 20:29:09,652 INFO L231 Difference]: Finished difference. Result has 114 places, 108 transitions, 377 flow [2024-11-12 20:29:09,652 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=377, PETRI_PLACES=114, PETRI_TRANSITIONS=108} [2024-11-12 20:29:09,653 INFO L279 CegarLoopForPetriNet]: 87 programPoint places, 27 predicate places. [2024-11-12 20:29:09,653 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 108 transitions, 377 flow [2024-11-12 20:29:09,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 48.333333333333336) internal successors, (290), 6 states have internal predecessors, (290), 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) [2024-11-12 20:29:09,653 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:29:09,653 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:29:09,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-12 20:29:09,654 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-11-12 20:29:09,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:29:09,654 INFO L85 PathProgramCache]: Analyzing trace with hash -132764386, now seen corresponding path program 1 times [2024-11-12 20:29:09,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:29:09,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132245998] [2024-11-12 20:29:09,655 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:29:09,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:29:09,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:29:09,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:29:09,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:29:09,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132245998] [2024-11-12 20:29:09,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132245998] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:29:09,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:29:09,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 20:29:09,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845103214] [2024-11-12 20:29:09,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:29:09,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 20:29:09,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:29:09,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 20:29:09,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-12 20:29:09,719 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 95 [2024-11-12 20:29:09,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 108 transitions, 377 flow. Second operand has 5 states, 5 states have (on average 49.6) internal successors, (248), 5 states have internal predecessors, (248), 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) [2024-11-12 20:29:09,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:29:09,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 95 [2024-11-12 20:29:09,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:29:17,389 INFO L124 PetriNetUnfolderBase]: 69901/119083 cut-off events. [2024-11-12 20:29:17,390 INFO L125 PetriNetUnfolderBase]: For 78039/78039 co-relation queries the response was YES. [2024-11-12 20:29:17,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263151 conditions, 119083 events. 69901/119083 cut-off events. For 78039/78039 co-relation queries the response was YES. Maximal size of possible extension queue 4227. Compared 1177357 event pairs, 21238 based on Foata normal form. 513/108613 useless extension candidates. Maximal degree in co-relation 254823. Up to 37144 conditions per place. [2024-11-12 20:29:18,234 INFO L140 encePairwiseOnDemand]: 88/95 looper letters, 198 selfloop transitions, 8 changer transitions 0/255 dead transitions. [2024-11-12 20:29:18,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 255 transitions, 1185 flow [2024-11-12 20:29:18,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-12 20:29:18,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-12 20:29:18,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 533 transitions. [2024-11-12 20:29:18,237 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8015037593984963 [2024-11-12 20:29:18,237 INFO L175 Difference]: Start difference. First operand has 114 places, 108 transitions, 377 flow. Second operand 7 states and 533 transitions. [2024-11-12 20:29:18,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 255 transitions, 1185 flow [2024-11-12 20:29:19,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 255 transitions, 1185 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-12 20:29:19,254 INFO L231 Difference]: Finished difference. Result has 123 places, 110 transitions, 418 flow [2024-11-12 20:29:19,254 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=418, PETRI_PLACES=123, PETRI_TRANSITIONS=110} [2024-11-12 20:29:19,255 INFO L279 CegarLoopForPetriNet]: 87 programPoint places, 36 predicate places. [2024-11-12 20:29:19,255 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 110 transitions, 418 flow [2024-11-12 20:29:19,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 49.6) internal successors, (248), 5 states have internal predecessors, (248), 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) [2024-11-12 20:29:19,255 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:29:19,256 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2024-11-12 20:29:19,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-12 20:29:19,256 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-11-12 20:29:19,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:29:19,256 INFO L85 PathProgramCache]: Analyzing trace with hash 290427375, now seen corresponding path program 1 times [2024-11-12 20:29:19,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:29:19,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708383259] [2024-11-12 20:29:19,257 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:29:19,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:29:19,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:29:19,266 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 20:29:19,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:29:19,275 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 20:29:19,278 INFO L339 BasicCegarLoop]: Counterexample is feasible [2024-11-12 20:29:19,278 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (32 of 33 remaining) [2024-11-12 20:29:19,278 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 33 remaining) [2024-11-12 20:29:19,278 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 33 remaining) [2024-11-12 20:29:19,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 33 remaining) [2024-11-12 20:29:19,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 33 remaining) [2024-11-12 20:29:19,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 33 remaining) [2024-11-12 20:29:19,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 33 remaining) [2024-11-12 20:29:19,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 33 remaining) [2024-11-12 20:29:19,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 33 remaining) [2024-11-12 20:29:19,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 33 remaining) [2024-11-12 20:29:19,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 33 remaining) [2024-11-12 20:29:19,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 33 remaining) [2024-11-12 20:29:19,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 33 remaining) [2024-11-12 20:29:19,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 33 remaining) [2024-11-12 20:29:19,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 33 remaining) [2024-11-12 20:29:19,280 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 33 remaining) [2024-11-12 20:29:19,280 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 33 remaining) [2024-11-12 20:29:19,280 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 33 remaining) [2024-11-12 20:29:19,280 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 33 remaining) [2024-11-12 20:29:19,280 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 33 remaining) [2024-11-12 20:29:19,280 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 33 remaining) [2024-11-12 20:29:19,280 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 33 remaining) [2024-11-12 20:29:19,280 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 33 remaining) [2024-11-12 20:29:19,280 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 33 remaining) [2024-11-12 20:29:19,280 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 33 remaining) [2024-11-12 20:29:19,280 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 33 remaining) [2024-11-12 20:29:19,280 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 33 remaining) [2024-11-12 20:29:19,280 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 33 remaining) [2024-11-12 20:29:19,280 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 33 remaining) [2024-11-12 20:29:19,281 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 33 remaining) [2024-11-12 20:29:19,281 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 33 remaining) [2024-11-12 20:29:19,281 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 33 remaining) [2024-11-12 20:29:19,281 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 33 remaining) [2024-11-12 20:29:19,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-12 20:29:19,281 INFO L421 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:29:19,281 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-12 20:29:19,281 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-12 20:29:19,319 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-12 20:29:19,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 125 transitions, 278 flow [2024-11-12 20:29:19,335 INFO L124 PetriNetUnfolderBase]: 20/136 cut-off events. [2024-11-12 20:29:19,335 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-12 20:29:19,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 136 events. 20/136 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 521 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 119. Up to 5 conditions per place. [2024-11-12 20:29:19,340 INFO L82 GeneralOperation]: Start removeDead. Operand has 114 places, 125 transitions, 278 flow [2024-11-12 20:29:19,341 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 114 places, 125 transitions, 278 flow [2024-11-12 20:29:19,341 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 20:29:19,342 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;@3fa78d05, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 20:29:19,342 INFO L334 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2024-11-12 20:29:19,346 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 20:29:19,347 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-11-12 20:29:19,347 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-12 20:29:19,347 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:29:19,347 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-12 20:29:19,347 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-12 20:29:19,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:29:19,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1856405565, now seen corresponding path program 1 times [2024-11-12 20:29:19,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:29:19,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343532034] [2024-11-12 20:29:19,347 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:29:19,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:29:19,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:29:19,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:29:19,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:29:19,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343532034] [2024-11-12 20:29:19,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343532034] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:29:19,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:29:19,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:29:19,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977532972] [2024-11-12 20:29:19,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:29:19,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 20:29:19,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:29:19,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:29:19,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 20:29:19,385 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 125 [2024-11-12 20:29:19,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 125 transitions, 278 flow. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 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) [2024-11-12 20:29:19,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:29:19,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 125 [2024-11-12 20:29:19,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand