./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread-theta/unwind3-nondet.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-theta/unwind3-nondet.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 2d10f4791070edb44c97ab9948c6a47d7a3edd4f9cb75d429f64896be7b2f789 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 15:16:32,342 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 15:16:32,421 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-09 15:16:32,425 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 15:16:32,426 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 15:16:32,449 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 15:16:32,451 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 15:16:32,452 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 15:16:32,452 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 15:16:32,454 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 15:16:32,455 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 15:16:32,455 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 15:16:32,455 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 15:16:32,456 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 15:16:32,456 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 15:16:32,456 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 15:16:32,460 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 15:16:32,460 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 15:16:32,460 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 15:16:32,460 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 15:16:32,460 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 15:16:32,461 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 15:16:32,461 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 15:16:32,462 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 15:16:32,462 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 15:16:32,462 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-09 15:16:32,464 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 15:16:32,464 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 15:16:32,464 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 15:16:32,464 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 15:16:32,465 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 15:16:32,465 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 15:16:32,465 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 15:16:32,465 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 15:16:32,465 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 15:16:32,465 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 15:16:32,466 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 15:16:32,466 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 15:16:32,466 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 15:16:32,467 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 15:16:32,467 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 15:16:32,468 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 15:16:32,468 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 15:16:32,469 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 15:16:32,469 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d10f4791070edb44c97ab9948c6a47d7a3edd4f9cb75d429f64896be7b2f789 [2024-11-09 15:16:32,716 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 15:16:32,742 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 15:16:32,746 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 15:16:32,748 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 15:16:32,748 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 15:16:32,749 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-theta/unwind3-nondet.i [2024-11-09 15:16:34,261 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 15:16:34,514 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 15:16:34,516 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind3-nondet.i [2024-11-09 15:16:34,533 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee8935cb5/968937c13490483f981bd82068e049b3/FLAGc143088c9 [2024-11-09 15:16:34,547 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee8935cb5/968937c13490483f981bd82068e049b3 [2024-11-09 15:16:34,549 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 15:16:34,551 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 15:16:34,552 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 15:16:34,552 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 15:16:34,557 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 15:16:34,558 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:16:34" (1/1) ... [2024-11-09 15:16:34,558 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50dd192b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:16:34, skipping insertion in model container [2024-11-09 15:16:34,558 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:16:34" (1/1) ... [2024-11-09 15:16:34,601 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 15:16:35,044 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:16:35,054 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 15:16:35,099 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:16:35,139 INFO L204 MainTranslator]: Completed translation [2024-11-09 15:16:35,140 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:16:35 WrapperNode [2024-11-09 15:16:35,140 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 15:16:35,141 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 15:16:35,141 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 15:16:35,142 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 15:16:35,148 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:16:35" (1/1) ... [2024-11-09 15:16:35,160 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:16:35" (1/1) ... [2024-11-09 15:16:35,190 INFO L138 Inliner]: procedures = 169, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 75 [2024-11-09 15:16:35,190 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 15:16:35,191 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 15:16:35,191 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 15:16:35,191 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 15:16:35,201 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:16:35" (1/1) ... [2024-11-09 15:16:35,201 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:16:35" (1/1) ... [2024-11-09 15:16:35,204 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:16:35" (1/1) ... [2024-11-09 15:16:35,221 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-09 15:16:35,221 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:16:35" (1/1) ... [2024-11-09 15:16:35,221 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:16:35" (1/1) ... [2024-11-09 15:16:35,226 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:16:35" (1/1) ... [2024-11-09 15:16:35,232 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:16:35" (1/1) ... [2024-11-09 15:16:35,234 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:16:35" (1/1) ... [2024-11-09 15:16:35,235 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:16:35" (1/1) ... [2024-11-09 15:16:35,237 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 15:16:35,238 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 15:16:35,238 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 15:16:35,239 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 15:16:35,239 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:16:35" (1/1) ... [2024-11-09 15:16:35,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 15:16:35,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:16:35,279 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 15:16:35,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 15:16:35,337 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 15:16:35,337 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2024-11-09 15:16:35,337 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2024-11-09 15:16:35,337 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2024-11-09 15:16:35,337 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2024-11-09 15:16:35,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 15:16:35,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 15:16:35,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 15:16:35,339 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 15:16:35,457 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 15:16:35,459 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 15:16:35,608 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 15:16:35,609 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 15:16:35,726 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 15:16:35,727 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-09 15:16:35,727 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:16:35 BoogieIcfgContainer [2024-11-09 15:16:35,727 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 15:16:35,729 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 15:16:35,730 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 15:16:35,734 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 15:16:35,735 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 03:16:34" (1/3) ... [2024-11-09 15:16:35,736 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ef5bac5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:16:35, skipping insertion in model container [2024-11-09 15:16:35,736 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:16:35" (2/3) ... [2024-11-09 15:16:35,737 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ef5bac5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:16:35, skipping insertion in model container [2024-11-09 15:16:35,737 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:16:35" (3/3) ... [2024-11-09 15:16:35,740 INFO L112 eAbstractionObserver]: Analyzing ICFG unwind3-nondet.i [2024-11-09 15:16:35,759 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 15:16:35,759 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-09 15:16:35,759 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 15:16:35,817 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 15:16:35,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 33 transitions, 74 flow [2024-11-09 15:16:35,882 INFO L124 PetriNetUnfolderBase]: 2/47 cut-off events. [2024-11-09 15:16:35,882 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 15:16:35,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 47 events. 2/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 135 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 29. Up to 4 conditions per place. [2024-11-09 15:16:35,885 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 33 transitions, 74 flow [2024-11-09 15:16:35,888 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 32 transitions, 71 flow [2024-11-09 15:16:35,897 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 15:16:35,905 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;@6787b38c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 15:16:35,906 INFO L334 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2024-11-09 15:16:35,916 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 15:16:35,920 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-11-09 15:16:35,920 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 15:16:35,920 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:35,921 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:35,922 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 13 more)] === [2024-11-09 15:16:35,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:35,927 INFO L85 PathProgramCache]: Analyzing trace with hash -2088991192, now seen corresponding path program 1 times [2024-11-09 15:16:35,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:35,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994643462] [2024-11-09 15:16:35,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:35,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:36,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:36,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:16:36,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:36,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994643462] [2024-11-09 15:16:36,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994643462] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:16:36,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:16:36,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 15:16:36,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739943149] [2024-11-09 15:16:36,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:16:36,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 15:16:36,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:36,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 15:16:36,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 15:16:36,491 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-11-09 15:16:36,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 71 flow. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:36,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:36,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-11-09 15:16:36,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:36,775 INFO L124 PetriNetUnfolderBase]: 122/284 cut-off events. [2024-11-09 15:16:36,775 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 15:16:36,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 546 conditions, 284 events. 122/284 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1284 event pairs, 27 based on Foata normal form. 22/266 useless extension candidates. Maximal degree in co-relation 471. Up to 92 conditions per place. [2024-11-09 15:16:36,782 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 50 selfloop transitions, 12 changer transitions 2/72 dead transitions. [2024-11-09 15:16:36,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 72 transitions, 288 flow [2024-11-09 15:16:36,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 15:16:36,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 15:16:36,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-11-09 15:16:36,795 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5084175084175084 [2024-11-09 15:16:36,797 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 71 flow. Second operand 9 states and 151 transitions. [2024-11-09 15:16:36,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 72 transitions, 288 flow [2024-11-09 15:16:36,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 72 transitions, 284 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:16:36,803 INFO L231 Difference]: Finished difference. Result has 48 places, 39 transitions, 142 flow [2024-11-09 15:16:36,805 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=142, PETRI_PLACES=48, PETRI_TRANSITIONS=39} [2024-11-09 15:16:36,808 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 11 predicate places. [2024-11-09 15:16:36,809 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 39 transitions, 142 flow [2024-11-09 15:16:36,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:36,809 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:36,809 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:36,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 15:16:36,810 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 13 more)] === [2024-11-09 15:16:36,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:36,811 INFO L85 PathProgramCache]: Analyzing trace with hash -334217248, now seen corresponding path program 1 times [2024-11-09 15:16:36,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:36,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117086791] [2024-11-09 15:16:36,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:36,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:36,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:36,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:16:36,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:36,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117086791] [2024-11-09 15:16:36,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117086791] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:16:36,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:16:36,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:16:36,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467287689] [2024-11-09 15:16:36,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:16:36,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 15:16:36,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:36,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 15:16:36,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 15:16:36,902 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 33 [2024-11-09 15:16:36,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 39 transitions, 142 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:36,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:36,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 33 [2024-11-09 15:16:36,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:37,044 INFO L124 PetriNetUnfolderBase]: 83/221 cut-off events. [2024-11-09 15:16:37,044 INFO L125 PetriNetUnfolderBase]: For 90/93 co-relation queries the response was YES. [2024-11-09 15:16:37,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 490 conditions, 221 events. 83/221 cut-off events. For 90/93 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 922 event pairs, 12 based on Foata normal form. 30/233 useless extension candidates. Maximal degree in co-relation 419. Up to 84 conditions per place. [2024-11-09 15:16:37,047 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 38 selfloop transitions, 5 changer transitions 3/57 dead transitions. [2024-11-09 15:16:37,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 57 transitions, 279 flow [2024-11-09 15:16:37,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 15:16:37,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 15:16:37,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 106 transitions. [2024-11-09 15:16:37,050 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6424242424242425 [2024-11-09 15:16:37,050 INFO L175 Difference]: Start difference. First operand has 48 places, 39 transitions, 142 flow. Second operand 5 states and 106 transitions. [2024-11-09 15:16:37,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 57 transitions, 279 flow [2024-11-09 15:16:37,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 57 transitions, 272 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 15:16:37,053 INFO L231 Difference]: Finished difference. Result has 47 places, 35 transitions, 132 flow [2024-11-09 15:16:37,054 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=132, PETRI_PLACES=47, PETRI_TRANSITIONS=35} [2024-11-09 15:16:37,054 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 10 predicate places. [2024-11-09 15:16:37,055 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 35 transitions, 132 flow [2024-11-09 15:16:37,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:37,055 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:37,055 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:37,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 15:16:37,056 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 13 more)] === [2024-11-09 15:16:37,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:37,057 INFO L85 PathProgramCache]: Analyzing trace with hash -333227225, now seen corresponding path program 1 times [2024-11-09 15:16:37,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:37,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304897852] [2024-11-09 15:16:37,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:37,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:37,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:37,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:16:37,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:37,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304897852] [2024-11-09 15:16:37,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304897852] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:16:37,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:16:37,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:16:37,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85984189] [2024-11-09 15:16:37,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:16:37,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:16:37,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:37,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:16:37,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:16:37,177 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 33 [2024-11-09 15:16:37,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 35 transitions, 132 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:37,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:37,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 33 [2024-11-09 15:16:37,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:37,265 INFO L124 PetriNetUnfolderBase]: 87/252 cut-off events. [2024-11-09 15:16:37,266 INFO L125 PetriNetUnfolderBase]: For 99/102 co-relation queries the response was YES. [2024-11-09 15:16:37,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 564 conditions, 252 events. 87/252 cut-off events. For 99/102 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1261 event pairs, 37 based on Foata normal form. 9/230 useless extension candidates. Maximal degree in co-relation 462. Up to 131 conditions per place. [2024-11-09 15:16:37,270 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 27 selfloop transitions, 3 changer transitions 0/44 dead transitions. [2024-11-09 15:16:37,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 44 transitions, 218 flow [2024-11-09 15:16:37,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:16:37,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:16:37,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2024-11-09 15:16:37,273 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6893939393939394 [2024-11-09 15:16:37,273 INFO L175 Difference]: Start difference. First operand has 47 places, 35 transitions, 132 flow. Second operand 4 states and 91 transitions. [2024-11-09 15:16:37,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 44 transitions, 218 flow [2024-11-09 15:16:37,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 44 transitions, 206 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 15:16:37,277 INFO L231 Difference]: Finished difference. Result has 48 places, 37 transitions, 146 flow [2024-11-09 15:16:37,277 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=146, PETRI_PLACES=48, PETRI_TRANSITIONS=37} [2024-11-09 15:16:37,279 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 11 predicate places. [2024-11-09 15:16:37,279 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 37 transitions, 146 flow [2024-11-09 15:16:37,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:37,280 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:37,280 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:37,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 15:16:37,280 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 13 more)] === [2024-11-09 15:16:37,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:37,281 INFO L85 PathProgramCache]: Analyzing trace with hash -333227192, now seen corresponding path program 1 times [2024-11-09 15:16:37,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:37,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620193155] [2024-11-09 15:16:37,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:37,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:37,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:37,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:16:37,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:37,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620193155] [2024-11-09 15:16:37,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620193155] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:16:37,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:16:37,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 15:16:37,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195013230] [2024-11-09 15:16:37,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:16:37,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 15:16:37,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:37,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 15:16:37,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 15:16:37,348 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 33 [2024-11-09 15:16:37,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 37 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:37,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:37,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 33 [2024-11-09 15:16:37,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:37,383 INFO L124 PetriNetUnfolderBase]: 69/207 cut-off events. [2024-11-09 15:16:37,383 INFO L125 PetriNetUnfolderBase]: For 64/65 co-relation queries the response was YES. [2024-11-09 15:16:37,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 492 conditions, 207 events. 69/207 cut-off events. For 64/65 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 932 event pairs, 42 based on Foata normal form. 20/218 useless extension candidates. Maximal degree in co-relation 387. Up to 143 conditions per place. [2024-11-09 15:16:37,387 INFO L140 encePairwiseOnDemand]: 31/33 looper letters, 19 selfloop transitions, 1 changer transitions 2/35 dead transitions. [2024-11-09 15:16:37,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 35 transitions, 179 flow [2024-11-09 15:16:37,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 15:16:37,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 15:16:37,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 63 transitions. [2024-11-09 15:16:37,388 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6363636363636364 [2024-11-09 15:16:37,388 INFO L175 Difference]: Start difference. First operand has 48 places, 37 transitions, 146 flow. Second operand 3 states and 63 transitions. [2024-11-09 15:16:37,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 35 transitions, 179 flow [2024-11-09 15:16:37,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 35 transitions, 175 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 15:16:37,390 INFO L231 Difference]: Finished difference. Result has 47 places, 33 transitions, 131 flow [2024-11-09 15:16:37,390 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=47, PETRI_TRANSITIONS=33} [2024-11-09 15:16:37,391 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 10 predicate places. [2024-11-09 15:16:37,393 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 33 transitions, 131 flow [2024-11-09 15:16:37,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:37,394 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:37,395 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:37,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 15:16:37,395 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 13 more)] === [2024-11-09 15:16:37,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:37,398 INFO L85 PathProgramCache]: Analyzing trace with hash 933878462, now seen corresponding path program 1 times [2024-11-09 15:16:37,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:37,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371676873] [2024-11-09 15:16:37,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:37,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:37,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 15:16:37,413 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 15:16:37,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 15:16:37,442 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 15:16:37,442 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 15:16:37,443 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 16 remaining) [2024-11-09 15:16:37,445 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2024-11-09 15:16:37,446 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2024-11-09 15:16:37,446 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 16 remaining) [2024-11-09 15:16:37,446 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 16 remaining) [2024-11-09 15:16:37,446 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 16 remaining) [2024-11-09 15:16:37,446 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 16 remaining) [2024-11-09 15:16:37,447 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 16 remaining) [2024-11-09 15:16:37,447 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 16 remaining) [2024-11-09 15:16:37,447 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 16 remaining) [2024-11-09 15:16:37,447 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 16 remaining) [2024-11-09 15:16:37,448 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 16 remaining) [2024-11-09 15:16:37,448 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2024-11-09 15:16:37,448 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2024-11-09 15:16:37,448 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2024-11-09 15:16:37,448 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2024-11-09 15:16:37,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 15:16:37,449 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-09 15:16:37,453 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 15:16:37,453 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-09 15:16:37,479 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 15:16:37,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 53 transitions, 126 flow [2024-11-09 15:16:37,492 INFO L124 PetriNetUnfolderBase]: 3/75 cut-off events. [2024-11-09 15:16:37,492 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 15:16:37,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 75 events. 3/75 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 245 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 86. Up to 6 conditions per place. [2024-11-09 15:16:37,493 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 53 transitions, 126 flow [2024-11-09 15:16:37,494 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 40 transitions, 93 flow [2024-11-09 15:16:37,495 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 15:16:37,496 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;@6787b38c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 15:16:37,496 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2024-11-09 15:16:37,498 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 15:16:37,498 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-11-09 15:16:37,498 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 15:16:37,499 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:37,499 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:37,499 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2024-11-09 15:16:37,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:37,499 INFO L85 PathProgramCache]: Analyzing trace with hash -727996086, now seen corresponding path program 1 times [2024-11-09 15:16:37,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:37,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375537561] [2024-11-09 15:16:37,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:37,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:37,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:37,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:16:37,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:37,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375537561] [2024-11-09 15:16:37,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375537561] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:16:37,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:16:37,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:16:37,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142996194] [2024-11-09 15:16:37,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:16:37,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 15:16:37,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:37,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 15:16:37,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 15:16:37,546 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 53 [2024-11-09 15:16:37,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 40 transitions, 93 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:37,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:37,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 53 [2024-11-09 15:16:37,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:37,646 INFO L124 PetriNetUnfolderBase]: 304/714 cut-off events. [2024-11-09 15:16:37,647 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-11-09 15:16:37,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1272 conditions, 714 events. 304/714 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4523 event pairs, 150 based on Foata normal form. 3/596 useless extension candidates. Maximal degree in co-relation 389. Up to 507 conditions per place. [2024-11-09 15:16:37,653 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 24 selfloop transitions, 3 changer transitions 0/46 dead transitions. [2024-11-09 15:16:37,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 46 transitions, 159 flow [2024-11-09 15:16:37,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 15:16:37,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 15:16:37,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 107 transitions. [2024-11-09 15:16:37,654 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6729559748427673 [2024-11-09 15:16:37,654 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 93 flow. Second operand 3 states and 107 transitions. [2024-11-09 15:16:37,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 46 transitions, 159 flow [2024-11-09 15:16:37,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 46 transitions, 158 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:16:37,656 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 113 flow [2024-11-09 15:16:37,656 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=113, PETRI_PLACES=49, PETRI_TRANSITIONS=42} [2024-11-09 15:16:37,657 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 2 predicate places. [2024-11-09 15:16:37,657 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 113 flow [2024-11-09 15:16:37,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:37,659 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:37,659 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:37,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 15:16:37,659 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2024-11-09 15:16:37,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:37,660 INFO L85 PathProgramCache]: Analyzing trace with hash -727995889, now seen corresponding path program 1 times [2024-11-09 15:16:37,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:37,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461351856] [2024-11-09 15:16:37,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:37,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:37,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:37,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:16:37,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:37,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461351856] [2024-11-09 15:16:37,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461351856] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:16:37,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:16:37,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 15:16:37,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276260405] [2024-11-09 15:16:37,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:16:37,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 15:16:37,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:37,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 15:16:37,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 15:16:37,788 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-11-09 15:16:37,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 42 transitions, 113 flow. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:37,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:37,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-11-09 15:16:37,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:38,221 INFO L124 PetriNetUnfolderBase]: 1348/2355 cut-off events. [2024-11-09 15:16:38,221 INFO L125 PetriNetUnfolderBase]: For 91/91 co-relation queries the response was YES. [2024-11-09 15:16:38,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4754 conditions, 2355 events. 1348/2355 cut-off events. For 91/91 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 13649 event pairs, 233 based on Foata normal form. 103/2242 useless extension candidates. Maximal degree in co-relation 2418. Up to 576 conditions per place. [2024-11-09 15:16:38,238 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 106 selfloop transitions, 17 changer transitions 1/136 dead transitions. [2024-11-09 15:16:38,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 136 transitions, 607 flow [2024-11-09 15:16:38,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 15:16:38,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 15:16:38,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 296 transitions. [2024-11-09 15:16:38,241 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5584905660377358 [2024-11-09 15:16:38,241 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 113 flow. Second operand 10 states and 296 transitions. [2024-11-09 15:16:38,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 136 transitions, 607 flow [2024-11-09 15:16:38,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 136 transitions, 602 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:16:38,247 INFO L231 Difference]: Finished difference. Result has 64 places, 55 transitions, 221 flow [2024-11-09 15:16:38,247 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=221, PETRI_PLACES=64, PETRI_TRANSITIONS=55} [2024-11-09 15:16:38,248 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 17 predicate places. [2024-11-09 15:16:38,249 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 55 transitions, 221 flow [2024-11-09 15:16:38,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:38,250 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:38,250 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:38,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 15:16:38,250 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2024-11-09 15:16:38,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:38,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1092008997, now seen corresponding path program 1 times [2024-11-09 15:16:38,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:38,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554178640] [2024-11-09 15:16:38,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:38,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:38,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:38,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:16:38,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:38,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554178640] [2024-11-09 15:16:38,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554178640] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:16:38,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:16:38,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:16:38,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898192946] [2024-11-09 15:16:38,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:16:38,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:16:38,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:38,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:16:38,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:16:38,313 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 53 [2024-11-09 15:16:38,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 55 transitions, 221 flow. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:38,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:38,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 53 [2024-11-09 15:16:38,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:38,557 INFO L124 PetriNetUnfolderBase]: 887/2153 cut-off events. [2024-11-09 15:16:38,557 INFO L125 PetriNetUnfolderBase]: For 594/619 co-relation queries the response was YES. [2024-11-09 15:16:38,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4381 conditions, 2153 events. 887/2153 cut-off events. For 594/619 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 16980 event pairs, 505 based on Foata normal form. 44/1872 useless extension candidates. Maximal degree in co-relation 4157. Up to 989 conditions per place. [2024-11-09 15:16:38,575 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 40 selfloop transitions, 3 changer transitions 0/71 dead transitions. [2024-11-09 15:16:38,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 71 transitions, 349 flow [2024-11-09 15:16:38,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:16:38,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:16:38,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 144 transitions. [2024-11-09 15:16:38,576 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6792452830188679 [2024-11-09 15:16:38,576 INFO L175 Difference]: Start difference. First operand has 64 places, 55 transitions, 221 flow. Second operand 4 states and 144 transitions. [2024-11-09 15:16:38,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 71 transitions, 349 flow [2024-11-09 15:16:38,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 71 transitions, 349 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 15:16:38,584 INFO L231 Difference]: Finished difference. Result has 69 places, 57 transitions, 243 flow [2024-11-09 15:16:38,584 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=243, PETRI_PLACES=69, PETRI_TRANSITIONS=57} [2024-11-09 15:16:38,585 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 22 predicate places. [2024-11-09 15:16:38,585 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 57 transitions, 243 flow [2024-11-09 15:16:38,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:38,585 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:38,586 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:38,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 15:16:38,586 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2024-11-09 15:16:38,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:38,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1092008964, now seen corresponding path program 1 times [2024-11-09 15:16:38,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:38,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546243574] [2024-11-09 15:16:38,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:38,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:38,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:38,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:16:38,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:38,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546243574] [2024-11-09 15:16:38,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546243574] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:16:38,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:16:38,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 15:16:38,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754138660] [2024-11-09 15:16:38,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:16:38,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 15:16:38,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:38,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 15:16:38,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 15:16:38,622 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2024-11-09 15:16:38,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 57 transitions, 243 flow. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:38,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:38,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2024-11-09 15:16:38,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:38,812 INFO L124 PetriNetUnfolderBase]: 847/2085 cut-off events. [2024-11-09 15:16:38,813 INFO L125 PetriNetUnfolderBase]: For 1133/1200 co-relation queries the response was YES. [2024-11-09 15:16:38,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4552 conditions, 2085 events. 847/2085 cut-off events. For 1133/1200 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 16165 event pairs, 726 based on Foata normal form. 104/1965 useless extension candidates. Maximal degree in co-relation 3759. Up to 1385 conditions per place. [2024-11-09 15:16:38,828 INFO L140 encePairwiseOnDemand]: 51/53 looper letters, 28 selfloop transitions, 1 changer transitions 0/55 dead transitions. [2024-11-09 15:16:38,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 55 transitions, 291 flow [2024-11-09 15:16:38,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 15:16:38,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 15:16:38,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2024-11-09 15:16:38,829 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5974842767295597 [2024-11-09 15:16:38,830 INFO L175 Difference]: Start difference. First operand has 69 places, 57 transitions, 243 flow. Second operand 3 states and 95 transitions. [2024-11-09 15:16:38,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 55 transitions, 291 flow [2024-11-09 15:16:38,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 55 transitions, 285 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 15:16:38,841 INFO L231 Difference]: Finished difference. Result has 68 places, 55 transitions, 229 flow [2024-11-09 15:16:38,842 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=229, PETRI_PLACES=68, PETRI_TRANSITIONS=55} [2024-11-09 15:16:38,842 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 21 predicate places. [2024-11-09 15:16:38,844 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 55 transitions, 229 flow [2024-11-09 15:16:38,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:38,844 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:38,844 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:38,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 15:16:38,845 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2024-11-09 15:16:38,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:38,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1093035762, now seen corresponding path program 1 times [2024-11-09 15:16:38,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:38,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809081201] [2024-11-09 15:16:38,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:38,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:38,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:38,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:16:38,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:38,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809081201] [2024-11-09 15:16:38,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809081201] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:16:38,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:16:38,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:16:38,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545549451] [2024-11-09 15:16:38,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:16:38,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 15:16:38,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:38,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 15:16:38,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 15:16:38,934 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 53 [2024-11-09 15:16:38,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 55 transitions, 229 flow. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:38,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:38,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 53 [2024-11-09 15:16:38,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:39,240 INFO L124 PetriNetUnfolderBase]: 1333/2453 cut-off events. [2024-11-09 15:16:39,241 INFO L125 PetriNetUnfolderBase]: For 1793/2001 co-relation queries the response was YES. [2024-11-09 15:16:39,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5978 conditions, 2453 events. 1333/2453 cut-off events. For 1793/2001 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 14880 event pairs, 242 based on Foata normal form. 293/2667 useless extension candidates. Maximal degree in co-relation 5961. Up to 1153 conditions per place. [2024-11-09 15:16:39,256 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 74 selfloop transitions, 8 changer transitions 0/97 dead transitions. [2024-11-09 15:16:39,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 97 transitions, 540 flow [2024-11-09 15:16:39,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 15:16:39,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 15:16:39,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 193 transitions. [2024-11-09 15:16:39,258 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6069182389937107 [2024-11-09 15:16:39,258 INFO L175 Difference]: Start difference. First operand has 68 places, 55 transitions, 229 flow. Second operand 6 states and 193 transitions. [2024-11-09 15:16:39,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 97 transitions, 540 flow [2024-11-09 15:16:39,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 97 transitions, 530 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-09 15:16:39,263 INFO L231 Difference]: Finished difference. Result has 68 places, 52 transitions, 222 flow [2024-11-09 15:16:39,263 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=222, PETRI_PLACES=68, PETRI_TRANSITIONS=52} [2024-11-09 15:16:39,265 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 21 predicate places. [2024-11-09 15:16:39,266 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 52 transitions, 222 flow [2024-11-09 15:16:39,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:39,266 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:39,266 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:39,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 15:16:39,267 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2024-11-09 15:16:39,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:39,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1957397289, now seen corresponding path program 1 times [2024-11-09 15:16:39,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:39,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541658824] [2024-11-09 15:16:39,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:39,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:39,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:39,358 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:16:39,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:39,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541658824] [2024-11-09 15:16:39,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541658824] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:16:39,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:16:39,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 15:16:39,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222732550] [2024-11-09 15:16:39,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:16:39,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 15:16:39,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:39,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 15:16:39,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 15:16:39,394 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 53 [2024-11-09 15:16:39,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 52 transitions, 222 flow. Second operand has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:39,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:39,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 53 [2024-11-09 15:16:39,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:39,633 INFO L124 PetriNetUnfolderBase]: 1222/2175 cut-off events. [2024-11-09 15:16:39,633 INFO L125 PetriNetUnfolderBase]: For 1723/1820 co-relation queries the response was YES. [2024-11-09 15:16:39,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5642 conditions, 2175 events. 1222/2175 cut-off events. For 1723/1820 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 12743 event pairs, 344 based on Foata normal form. 3/2118 useless extension candidates. Maximal degree in co-relation 5625. Up to 1636 conditions per place. [2024-11-09 15:16:39,648 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 46 selfloop transitions, 9 changer transitions 7/76 dead transitions. [2024-11-09 15:16:39,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 76 transitions, 427 flow [2024-11-09 15:16:39,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 15:16:39,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 15:16:39,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 169 transitions. [2024-11-09 15:16:39,650 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5314465408805031 [2024-11-09 15:16:39,650 INFO L175 Difference]: Start difference. First operand has 68 places, 52 transitions, 222 flow. Second operand 6 states and 169 transitions. [2024-11-09 15:16:39,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 76 transitions, 427 flow [2024-11-09 15:16:39,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 76 transitions, 406 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-11-09 15:16:39,657 INFO L231 Difference]: Finished difference. Result has 70 places, 51 transitions, 219 flow [2024-11-09 15:16:39,658 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=219, PETRI_PLACES=70, PETRI_TRANSITIONS=51} [2024-11-09 15:16:39,659 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 23 predicate places. [2024-11-09 15:16:39,660 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 51 transitions, 219 flow [2024-11-09 15:16:39,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:39,660 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:39,660 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:39,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 15:16:39,661 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2024-11-09 15:16:39,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:39,664 INFO L85 PathProgramCache]: Analyzing trace with hash -978287775, now seen corresponding path program 1 times [2024-11-09 15:16:39,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:39,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752659103] [2024-11-09 15:16:39,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:39,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:39,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:39,754 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:16:39,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:39,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752659103] [2024-11-09 15:16:39,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752659103] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:16:39,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075458090] [2024-11-09 15:16:39,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:39,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:16:39,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:16:39,757 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:16:39,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 15:16:39,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:39,837 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 15:16:39,838 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:16:39,965 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:16:39,965 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:16:40,118 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:16:40,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075458090] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 15:16:40,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 15:16:40,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 15 [2024-11-09 15:16:40,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563245350] [2024-11-09 15:16:40,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:16:40,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 15:16:40,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:40,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 15:16:40,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2024-11-09 15:16:40,170 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 53 [2024-11-09 15:16:40,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 51 transitions, 219 flow. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:40,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:40,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 53 [2024-11-09 15:16:40,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:40,640 INFO L124 PetriNetUnfolderBase]: 1827/3205 cut-off events. [2024-11-09 15:16:40,640 INFO L125 PetriNetUnfolderBase]: For 2117/2225 co-relation queries the response was YES. [2024-11-09 15:16:40,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8085 conditions, 3205 events. 1827/3205 cut-off events. For 2117/2225 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 20150 event pairs, 282 based on Foata normal form. 0/3091 useless extension candidates. Maximal degree in co-relation 8068. Up to 1094 conditions per place. [2024-11-09 15:16:40,670 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 92 selfloop transitions, 17 changer transitions 2/122 dead transitions. [2024-11-09 15:16:40,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 122 transitions, 715 flow [2024-11-09 15:16:40,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 15:16:40,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-09 15:16:40,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 225 transitions. [2024-11-09 15:16:40,674 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5306603773584906 [2024-11-09 15:16:40,674 INFO L175 Difference]: Start difference. First operand has 70 places, 51 transitions, 219 flow. Second operand 8 states and 225 transitions. [2024-11-09 15:16:40,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 122 transitions, 715 flow [2024-11-09 15:16:40,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 122 transitions, 669 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-11-09 15:16:40,682 INFO L231 Difference]: Finished difference. Result has 75 places, 58 transitions, 294 flow [2024-11-09 15:16:40,683 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=294, PETRI_PLACES=75, PETRI_TRANSITIONS=58} [2024-11-09 15:16:40,684 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 28 predicate places. [2024-11-09 15:16:40,684 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 58 transitions, 294 flow [2024-11-09 15:16:40,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:40,684 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:40,685 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:40,701 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 15:16:40,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-09 15:16:40,886 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2024-11-09 15:16:40,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:40,886 INFO L85 PathProgramCache]: Analyzing trace with hash -978288196, now seen corresponding path program 1 times [2024-11-09 15:16:40,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:40,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582809735] [2024-11-09 15:16:40,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:40,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:40,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:40,917 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:16:40,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:40,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582809735] [2024-11-09 15:16:40,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582809735] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:16:40,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646116733] [2024-11-09 15:16:40,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:40,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:16:40,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:16:40,920 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:16:40,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 15:16:40,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:40,983 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 15:16:40,985 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:16:41,005 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:16:41,006 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:16:41,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646116733] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:16:41,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:16:41,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2024-11-09 15:16:41,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666972050] [2024-11-09 15:16:41,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:16:41,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:16:41,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:41,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:16:41,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 15:16:41,014 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 53 [2024-11-09 15:16:41,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 58 transitions, 294 flow. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:41,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:41,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 53 [2024-11-09 15:16:41,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:41,184 INFO L124 PetriNetUnfolderBase]: 795/1648 cut-off events. [2024-11-09 15:16:41,184 INFO L125 PetriNetUnfolderBase]: For 650/652 co-relation queries the response was YES. [2024-11-09 15:16:41,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3868 conditions, 1648 events. 795/1648 cut-off events. For 650/652 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 11774 event pairs, 278 based on Foata normal form. 18/1586 useless extension candidates. Maximal degree in co-relation 3848. Up to 1087 conditions per place. [2024-11-09 15:16:41,194 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 33 selfloop transitions, 6 changer transitions 0/65 dead transitions. [2024-11-09 15:16:41,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 65 transitions, 394 flow [2024-11-09 15:16:41,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:16:41,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:16:41,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 134 transitions. [2024-11-09 15:16:41,196 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6320754716981132 [2024-11-09 15:16:41,196 INFO L175 Difference]: Start difference. First operand has 75 places, 58 transitions, 294 flow. Second operand 4 states and 134 transitions. [2024-11-09 15:16:41,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 65 transitions, 394 flow [2024-11-09 15:16:41,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 65 transitions, 386 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-09 15:16:41,200 INFO L231 Difference]: Finished difference. Result has 76 places, 57 transitions, 294 flow [2024-11-09 15:16:41,201 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=294, PETRI_PLACES=76, PETRI_TRANSITIONS=57} [2024-11-09 15:16:41,202 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 29 predicate places. [2024-11-09 15:16:41,202 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 57 transitions, 294 flow [2024-11-09 15:16:41,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:41,203 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:41,203 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:41,220 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 15:16:41,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-09 15:16:41,409 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2024-11-09 15:16:41,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:41,409 INFO L85 PathProgramCache]: Analyzing trace with hash -262162721, now seen corresponding path program 1 times [2024-11-09 15:16:41,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:41,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431756463] [2024-11-09 15:16:41,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:41,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:41,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:41,449 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:16:41,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:41,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431756463] [2024-11-09 15:16:41,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431756463] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:16:41,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524744510] [2024-11-09 15:16:41,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:41,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:16:41,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:16:41,452 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:16:41,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 15:16:41,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:41,515 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 15:16:41,515 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:16:41,538 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:16:41,538 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:16:41,562 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:16:41,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524744510] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:16:41,563 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:16:41,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-09 15:16:41,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548591051] [2024-11-09 15:16:41,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:16:41,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 15:16:41,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:41,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 15:16:41,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-09 15:16:41,572 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 53 [2024-11-09 15:16:41,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 57 transitions, 294 flow. Second operand has 7 states, 7 states have (on average 29.428571428571427) internal successors, (206), 7 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) [2024-11-09 15:16:41,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:41,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 53 [2024-11-09 15:16:41,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:41,735 INFO L124 PetriNetUnfolderBase]: 772/1584 cut-off events. [2024-11-09 15:16:41,735 INFO L125 PetriNetUnfolderBase]: For 586/588 co-relation queries the response was YES. [2024-11-09 15:16:41,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3716 conditions, 1584 events. 772/1584 cut-off events. For 586/588 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 11200 event pairs, 215 based on Foata normal form. 0/1540 useless extension candidates. Maximal degree in co-relation 3695. Up to 1087 conditions per place. [2024-11-09 15:16:41,745 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 38 selfloop transitions, 8 changer transitions 0/72 dead transitions. [2024-11-09 15:16:41,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 72 transitions, 444 flow [2024-11-09 15:16:41,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 15:16:41,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 15:16:41,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 165 transitions. [2024-11-09 15:16:41,746 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6226415094339622 [2024-11-09 15:16:41,746 INFO L175 Difference]: Start difference. First operand has 76 places, 57 transitions, 294 flow. Second operand 5 states and 165 transitions. [2024-11-09 15:16:41,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 72 transitions, 444 flow [2024-11-09 15:16:41,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 72 transitions, 436 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 15:16:41,750 INFO L231 Difference]: Finished difference. Result has 77 places, 57 transitions, 306 flow [2024-11-09 15:16:41,751 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=306, PETRI_PLACES=77, PETRI_TRANSITIONS=57} [2024-11-09 15:16:41,751 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 30 predicate places. [2024-11-09 15:16:41,751 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 57 transitions, 306 flow [2024-11-09 15:16:41,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 29.428571428571427) internal successors, (206), 7 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) [2024-11-09 15:16:41,752 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:41,752 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:41,768 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 15:16:41,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:16:41,952 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2024-11-09 15:16:41,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:41,953 INFO L85 PathProgramCache]: Analyzing trace with hash -262149629, now seen corresponding path program 1 times [2024-11-09 15:16:41,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:41,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519038638] [2024-11-09 15:16:41,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:41,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:41,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:41,994 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 15:16:41,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:41,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519038638] [2024-11-09 15:16:41,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519038638] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:16:41,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:16:41,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:16:41,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626294694] [2024-11-09 15:16:41,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:16:41,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 15:16:41,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:41,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 15:16:41,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 15:16:42,026 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 53 [2024-11-09 15:16:42,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 57 transitions, 306 flow. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:42,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:42,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 53 [2024-11-09 15:16:42,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:42,323 INFO L124 PetriNetUnfolderBase]: 1538/2796 cut-off events. [2024-11-09 15:16:42,323 INFO L125 PetriNetUnfolderBase]: For 3144/3280 co-relation queries the response was YES. [2024-11-09 15:16:42,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7660 conditions, 2796 events. 1538/2796 cut-off events. For 3144/3280 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 17597 event pairs, 295 based on Foata normal form. 92/2864 useless extension candidates. Maximal degree in co-relation 7639. Up to 1394 conditions per place. [2024-11-09 15:16:42,337 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 77 selfloop transitions, 10 changer transitions 0/101 dead transitions. [2024-11-09 15:16:42,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 101 transitions, 669 flow [2024-11-09 15:16:42,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 15:16:42,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 15:16:42,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2024-11-09 15:16:42,338 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5911949685534591 [2024-11-09 15:16:42,338 INFO L175 Difference]: Start difference. First operand has 77 places, 57 transitions, 306 flow. Second operand 6 states and 188 transitions. [2024-11-09 15:16:42,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 101 transitions, 669 flow [2024-11-09 15:16:42,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 101 transitions, 627 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-11-09 15:16:42,349 INFO L231 Difference]: Finished difference. Result has 80 places, 57 transitions, 314 flow [2024-11-09 15:16:42,350 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=314, PETRI_PLACES=80, PETRI_TRANSITIONS=57} [2024-11-09 15:16:42,351 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 33 predicate places. [2024-11-09 15:16:42,351 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 57 transitions, 314 flow [2024-11-09 15:16:42,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:42,351 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:42,351 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:42,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-09 15:16:42,351 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2024-11-09 15:16:42,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:42,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1464705388, now seen corresponding path program 1 times [2024-11-09 15:16:42,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:42,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341344057] [2024-11-09 15:16:42,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:42,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:42,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 15:16:42,363 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 15:16:42,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 15:16:42,374 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 15:16:42,375 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 15:16:42,375 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2024-11-09 15:16:42,375 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 22 remaining) [2024-11-09 15:16:42,375 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 22 remaining) [2024-11-09 15:16:42,375 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 22 remaining) [2024-11-09 15:16:42,375 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 22 remaining) [2024-11-09 15:16:42,375 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 22 remaining) [2024-11-09 15:16:42,375 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 22 remaining) [2024-11-09 15:16:42,376 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 22 remaining) [2024-11-09 15:16:42,376 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 22 remaining) [2024-11-09 15:16:42,376 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 22 remaining) [2024-11-09 15:16:42,376 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 22 remaining) [2024-11-09 15:16:42,376 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 22 remaining) [2024-11-09 15:16:42,376 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 22 remaining) [2024-11-09 15:16:42,376 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 22 remaining) [2024-11-09 15:16:42,376 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 22 remaining) [2024-11-09 15:16:42,377 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 22 remaining) [2024-11-09 15:16:42,377 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 22 remaining) [2024-11-09 15:16:42,377 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 22 remaining) [2024-11-09 15:16:42,377 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 22 remaining) [2024-11-09 15:16:42,377 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 22 remaining) [2024-11-09 15:16:42,377 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 22 remaining) [2024-11-09 15:16:42,377 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 22 remaining) [2024-11-09 15:16:42,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-09 15:16:42,377 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:42,378 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 15:16:42,378 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-09 15:16:42,407 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 15:16:42,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 73 transitions, 182 flow [2024-11-09 15:16:42,418 INFO L124 PetriNetUnfolderBase]: 4/103 cut-off events. [2024-11-09 15:16:42,418 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-09 15:16:42,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 103 events. 4/103 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 339 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 120. Up to 8 conditions per place. [2024-11-09 15:16:42,419 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 73 transitions, 182 flow [2024-11-09 15:16:42,419 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 48 transitions, 117 flow [2024-11-09 15:16:42,420 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 15:16:42,420 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;@6787b38c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 15:16:42,420 INFO L334 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2024-11-09 15:16:42,421 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 15:16:42,422 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-11-09 15:16:42,422 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 15:16:42,422 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:42,422 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:42,422 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2024-11-09 15:16:42,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:42,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1794873418, now seen corresponding path program 1 times [2024-11-09 15:16:42,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:42,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851421010] [2024-11-09 15:16:42,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:42,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:42,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:42,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:16:42,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:42,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851421010] [2024-11-09 15:16:42,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851421010] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:16:42,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:16:42,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 15:16:42,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238418324] [2024-11-09 15:16:42,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:16:42,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 15:16:42,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:42,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 15:16:42,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 15:16:42,523 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 73 [2024-11-09 15:16:42,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 48 transitions, 117 flow. Second operand has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 6 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) [2024-11-09 15:16:42,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:42,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 73 [2024-11-09 15:16:42,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:43,602 INFO L124 PetriNetUnfolderBase]: 9682/14751 cut-off events. [2024-11-09 15:16:43,602 INFO L125 PetriNetUnfolderBase]: For 375/375 co-relation queries the response was YES. [2024-11-09 15:16:43,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29030 conditions, 14751 events. 9682/14751 cut-off events. For 375/375 co-relation queries the response was YES. Maximal size of possible extension queue 669. Compared 97584 event pairs, 1731 based on Foata normal form. 442/13582 useless extension candidates. Maximal degree in co-relation 8805. Up to 5038 conditions per place. [2024-11-09 15:16:43,671 INFO L140 encePairwiseOnDemand]: 58/73 looper letters, 125 selfloop transitions, 20 changer transitions 1/162 dead transitions. [2024-11-09 15:16:43,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 162 transitions, 690 flow [2024-11-09 15:16:43,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 15:16:43,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 15:16:43,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 403 transitions. [2024-11-09 15:16:43,673 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.552054794520548 [2024-11-09 15:16:43,673 INFO L175 Difference]: Start difference. First operand has 57 places, 48 transitions, 117 flow. Second operand 10 states and 403 transitions. [2024-11-09 15:16:43,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 162 transitions, 690 flow [2024-11-09 15:16:43,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 162 transitions, 674 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-11-09 15:16:43,676 INFO L231 Difference]: Finished difference. Result has 73 places, 68 transitions, 269 flow [2024-11-09 15:16:43,676 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=269, PETRI_PLACES=73, PETRI_TRANSITIONS=68} [2024-11-09 15:16:43,676 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 16 predicate places. [2024-11-09 15:16:43,676 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 68 transitions, 269 flow [2024-11-09 15:16:43,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 6 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) [2024-11-09 15:16:43,677 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:43,677 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:43,677 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-09 15:16:43,677 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2024-11-09 15:16:43,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:43,677 INFO L85 PathProgramCache]: Analyzing trace with hash -193498486, now seen corresponding path program 1 times [2024-11-09 15:16:43,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:43,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100706471] [2024-11-09 15:16:43,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:43,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:43,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:43,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:16:43,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:43,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100706471] [2024-11-09 15:16:43,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100706471] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:16:43,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:16:43,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:16:43,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988693817] [2024-11-09 15:16:43,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:16:43,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 15:16:43,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:43,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 15:16:43,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 15:16:43,747 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 73 [2024-11-09 15:16:43,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 68 transitions, 269 flow. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:43,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:43,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 73 [2024-11-09 15:16:43,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:44,836 INFO L124 PetriNetUnfolderBase]: 7390/11443 cut-off events. [2024-11-09 15:16:44,838 INFO L125 PetriNetUnfolderBase]: For 7159/8538 co-relation queries the response was YES. [2024-11-09 15:16:44,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27904 conditions, 11443 events. 7390/11443 cut-off events. For 7159/8538 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 73397 event pairs, 1693 based on Foata normal form. 840/11522 useless extension candidates. Maximal degree in co-relation 27828. Up to 5841 conditions per place. [2024-11-09 15:16:44,912 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 92 selfloop transitions, 10 changer transitions 0/121 dead transitions. [2024-11-09 15:16:44,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 121 transitions, 649 flow [2024-11-09 15:16:44,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 15:16:44,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 15:16:44,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 261 transitions. [2024-11-09 15:16:44,913 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5958904109589042 [2024-11-09 15:16:44,914 INFO L175 Difference]: Start difference. First operand has 73 places, 68 transitions, 269 flow. Second operand 6 states and 261 transitions. [2024-11-09 15:16:44,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 121 transitions, 649 flow [2024-11-09 15:16:44,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 121 transitions, 639 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 15:16:44,957 INFO L231 Difference]: Finished difference. Result has 75 places, 67 transitions, 288 flow [2024-11-09 15:16:44,957 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=288, PETRI_PLACES=75, PETRI_TRANSITIONS=67} [2024-11-09 15:16:44,958 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 18 predicate places. [2024-11-09 15:16:44,958 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 67 transitions, 288 flow [2024-11-09 15:16:44,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:44,958 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:44,958 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:44,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-09 15:16:44,958 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2024-11-09 15:16:44,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:44,959 INFO L85 PathProgramCache]: Analyzing trace with hash -192427035, now seen corresponding path program 1 times [2024-11-09 15:16:44,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:44,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556873371] [2024-11-09 15:16:44,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:44,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:44,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:44,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:16:44,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:44,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556873371] [2024-11-09 15:16:44,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556873371] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:16:44,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:16:44,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:16:44,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458663902] [2024-11-09 15:16:44,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:16:44,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:16:44,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:44,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:16:44,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:16:44,996 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 73 [2024-11-09 15:16:44,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 67 transitions, 288 flow. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:44,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:44,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 73 [2024-11-09 15:16:44,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:45,989 INFO L124 PetriNetUnfolderBase]: 6057/12323 cut-off events. [2024-11-09 15:16:45,989 INFO L125 PetriNetUnfolderBase]: For 4784/5512 co-relation queries the response was YES. [2024-11-09 15:16:46,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25157 conditions, 12323 events. 6057/12323 cut-off events. For 4784/5512 co-relation queries the response was YES. Maximal size of possible extension queue 862. Compared 118139 event pairs, 3583 based on Foata normal form. 283/10509 useless extension candidates. Maximal degree in co-relation 14712. Up to 5663 conditions per place. [2024-11-09 15:16:46,077 INFO L140 encePairwiseOnDemand]: 68/73 looper letters, 46 selfloop transitions, 3 changer transitions 0/87 dead transitions. [2024-11-09 15:16:46,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 87 transitions, 442 flow [2024-11-09 15:16:46,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:16:46,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:16:46,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 195 transitions. [2024-11-09 15:16:46,079 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6678082191780822 [2024-11-09 15:16:46,079 INFO L175 Difference]: Start difference. First operand has 75 places, 67 transitions, 288 flow. Second operand 4 states and 195 transitions. [2024-11-09 15:16:46,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 87 transitions, 442 flow [2024-11-09 15:16:46,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 87 transitions, 422 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-09 15:16:46,103 INFO L231 Difference]: Finished difference. Result has 77 places, 69 transitions, 294 flow [2024-11-09 15:16:46,104 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=294, PETRI_PLACES=77, PETRI_TRANSITIONS=69} [2024-11-09 15:16:46,104 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 20 predicate places. [2024-11-09 15:16:46,105 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 69 transitions, 294 flow [2024-11-09 15:16:46,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:46,105 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:46,105 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:46,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-09 15:16:46,105 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2024-11-09 15:16:46,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:46,106 INFO L85 PathProgramCache]: Analyzing trace with hash -192427002, now seen corresponding path program 1 times [2024-11-09 15:16:46,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:46,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222082777] [2024-11-09 15:16:46,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:46,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:46,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:46,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:16:46,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:46,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222082777] [2024-11-09 15:16:46,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222082777] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:16:46,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:16:46,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 15:16:46,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693688093] [2024-11-09 15:16:46,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:16:46,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 15:16:46,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:46,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 15:16:46,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 15:16:46,150 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 73 [2024-11-09 15:16:46,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 69 transitions, 294 flow. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:46,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:46,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 73 [2024-11-09 15:16:46,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:46,942 INFO L124 PetriNetUnfolderBase]: 4930/10565 cut-off events. [2024-11-09 15:16:46,943 INFO L125 PetriNetUnfolderBase]: For 4578/5536 co-relation queries the response was YES. [2024-11-09 15:16:46,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22400 conditions, 10565 events. 4930/10565 cut-off events. For 4578/5536 co-relation queries the response was YES. Maximal size of possible extension queue 697. Compared 101213 event pairs, 4259 based on Foata normal form. 533/9669 useless extension candidates. Maximal degree in co-relation 14165. Up to 6698 conditions per place. [2024-11-09 15:16:46,998 INFO L140 encePairwiseOnDemand]: 71/73 looper letters, 28 selfloop transitions, 1 changer transitions 0/65 dead transitions. [2024-11-09 15:16:46,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 65 transitions, 329 flow [2024-11-09 15:16:46,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 15:16:46,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 15:16:46,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 124 transitions. [2024-11-09 15:16:46,999 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5662100456621004 [2024-11-09 15:16:46,999 INFO L175 Difference]: Start difference. First operand has 77 places, 69 transitions, 294 flow. Second operand 3 states and 124 transitions. [2024-11-09 15:16:46,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 65 transitions, 329 flow [2024-11-09 15:16:47,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 65 transitions, 310 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-09 15:16:47,014 INFO L231 Difference]: Finished difference. Result has 74 places, 65 transitions, 254 flow [2024-11-09 15:16:47,014 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=254, PETRI_PLACES=74, PETRI_TRANSITIONS=65} [2024-11-09 15:16:47,014 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 17 predicate places. [2024-11-09 15:16:47,014 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 65 transitions, 254 flow [2024-11-09 15:16:47,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:47,015 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:47,015 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:47,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-09 15:16:47,016 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2024-11-09 15:16:47,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:47,016 INFO L85 PathProgramCache]: Analyzing trace with hash -687261062, now seen corresponding path program 1 times [2024-11-09 15:16:47,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:47,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685434174] [2024-11-09 15:16:47,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:47,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:47,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:47,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:16:47,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:47,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685434174] [2024-11-09 15:16:47,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685434174] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:16:47,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:16:47,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:16:47,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934484200] [2024-11-09 15:16:47,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:16:47,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 15:16:47,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:47,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 15:16:47,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 15:16:47,060 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 73 [2024-11-09 15:16:47,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 65 transitions, 254 flow. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:47,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:47,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 73 [2024-11-09 15:16:47,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:47,873 INFO L124 PetriNetUnfolderBase]: 5278/10921 cut-off events. [2024-11-09 15:16:47,874 INFO L125 PetriNetUnfolderBase]: For 2919/3247 co-relation queries the response was YES. [2024-11-09 15:16:47,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22799 conditions, 10921 events. 5278/10921 cut-off events. For 2919/3247 co-relation queries the response was YES. Maximal size of possible extension queue 749. Compared 104446 event pairs, 4567 based on Foata normal form. 3/9407 useless extension candidates. Maximal degree in co-relation 22783. Up to 7198 conditions per place. [2024-11-09 15:16:47,943 INFO L140 encePairwiseOnDemand]: 68/73 looper letters, 30 selfloop transitions, 5 changer transitions 0/68 dead transitions. [2024-11-09 15:16:47,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 68 transitions, 334 flow [2024-11-09 15:16:47,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 15:16:47,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 15:16:47,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 143 transitions. [2024-11-09 15:16:47,945 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6529680365296804 [2024-11-09 15:16:47,945 INFO L175 Difference]: Start difference. First operand has 74 places, 65 transitions, 254 flow. Second operand 3 states and 143 transitions. [2024-11-09 15:16:47,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 68 transitions, 334 flow [2024-11-09 15:16:47,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 68 transitions, 333 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:16:47,959 INFO L231 Difference]: Finished difference. Result has 76 places, 66 transitions, 280 flow [2024-11-09 15:16:47,959 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=280, PETRI_PLACES=76, PETRI_TRANSITIONS=66} [2024-11-09 15:16:47,960 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 19 predicate places. [2024-11-09 15:16:47,960 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 66 transitions, 280 flow [2024-11-09 15:16:47,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:47,961 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:47,961 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:47,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-09 15:16:47,961 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2024-11-09 15:16:47,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:47,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1187974195, now seen corresponding path program 1 times [2024-11-09 15:16:47,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:47,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918228950] [2024-11-09 15:16:47,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:47,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:47,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:48,029 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:16:48,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:48,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918228950] [2024-11-09 15:16:48,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918228950] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:16:48,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:16:48,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 15:16:48,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575923820] [2024-11-09 15:16:48,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:16:48,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 15:16:48,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:48,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 15:16:48,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 15:16:48,090 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 73 [2024-11-09 15:16:48,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 66 transitions, 280 flow. Second operand has 6 states, 6 states have (on average 28.5) internal successors, (171), 6 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:48,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:48,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 73 [2024-11-09 15:16:48,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:49,146 INFO L124 PetriNetUnfolderBase]: 9147/14736 cut-off events. [2024-11-09 15:16:49,146 INFO L125 PetriNetUnfolderBase]: For 8332/8910 co-relation queries the response was YES. [2024-11-09 15:16:49,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36812 conditions, 14736 events. 9147/14736 cut-off events. For 8332/8910 co-relation queries the response was YES. Maximal size of possible extension queue 685. Compared 106722 event pairs, 2763 based on Foata normal form. 9/14070 useless extension candidates. Maximal degree in co-relation 36795. Up to 12229 conditions per place. [2024-11-09 15:16:49,323 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 56 selfloop transitions, 11 changer transitions 7/92 dead transitions. [2024-11-09 15:16:49,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 92 transitions, 530 flow [2024-11-09 15:16:49,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 15:16:49,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 15:16:49,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 224 transitions. [2024-11-09 15:16:49,325 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5114155251141552 [2024-11-09 15:16:49,325 INFO L175 Difference]: Start difference. First operand has 76 places, 66 transitions, 280 flow. Second operand 6 states and 224 transitions. [2024-11-09 15:16:49,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 92 transitions, 530 flow [2024-11-09 15:16:49,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 92 transitions, 513 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-09 15:16:49,365 INFO L231 Difference]: Finished difference. Result has 82 places, 65 transitions, 291 flow [2024-11-09 15:16:49,365 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=291, PETRI_PLACES=82, PETRI_TRANSITIONS=65} [2024-11-09 15:16:49,365 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 25 predicate places. [2024-11-09 15:16:49,366 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 65 transitions, 291 flow [2024-11-09 15:16:49,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.5) internal successors, (171), 6 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:49,366 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:49,366 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:49,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-09 15:16:49,366 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2024-11-09 15:16:49,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:49,366 INFO L85 PathProgramCache]: Analyzing trace with hash -529568639, now seen corresponding path program 1 times [2024-11-09 15:16:49,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:49,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277914780] [2024-11-09 15:16:49,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:49,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:49,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:49,427 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:16:49,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:49,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277914780] [2024-11-09 15:16:49,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277914780] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:16:49,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072116892] [2024-11-09 15:16:49,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:49,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:16:49,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:16:49,430 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:16:49,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 15:16:49,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:49,506 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 15:16:49,507 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:16:49,583 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:16:49,583 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:16:49,680 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:16:49,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072116892] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 15:16:49,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 15:16:49,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 15 [2024-11-09 15:16:49,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277683650] [2024-11-09 15:16:49,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:16:49,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 15:16:49,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:49,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 15:16:49,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2024-11-09 15:16:49,732 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 73 [2024-11-09 15:16:49,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 65 transitions, 291 flow. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 7 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:49,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:49,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 73 [2024-11-09 15:16:49,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:51,878 INFO L124 PetriNetUnfolderBase]: 17761/29229 cut-off events. [2024-11-09 15:16:51,879 INFO L125 PetriNetUnfolderBase]: For 17632/18642 co-relation queries the response was YES. [2024-11-09 15:16:51,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70815 conditions, 29229 events. 17761/29229 cut-off events. For 17632/18642 co-relation queries the response was YES. Maximal size of possible extension queue 1263. Compared 238397 event pairs, 4840 based on Foata normal form. 99/27494 useless extension candidates. Maximal degree in co-relation 70795. Up to 12531 conditions per place. [2024-11-09 15:16:51,998 INFO L140 encePairwiseOnDemand]: 61/73 looper letters, 112 selfloop transitions, 25 changer transitions 2/154 dead transitions. [2024-11-09 15:16:51,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 154 transitions, 942 flow [2024-11-09 15:16:51,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 15:16:51,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-09 15:16:52,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 308 transitions. [2024-11-09 15:16:52,000 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5273972602739726 [2024-11-09 15:16:52,000 INFO L175 Difference]: Start difference. First operand has 82 places, 65 transitions, 291 flow. Second operand 8 states and 308 transitions. [2024-11-09 15:16:52,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 154 transitions, 942 flow [2024-11-09 15:16:52,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 154 transitions, 888 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-11-09 15:16:52,049 INFO L231 Difference]: Finished difference. Result has 87 places, 77 transitions, 424 flow [2024-11-09 15:16:52,049 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=424, PETRI_PLACES=87, PETRI_TRANSITIONS=77} [2024-11-09 15:16:52,049 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 30 predicate places. [2024-11-09 15:16:52,050 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 77 transitions, 424 flow [2024-11-09 15:16:52,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 7 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:52,050 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:52,050 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:52,064 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 15:16:52,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:16:52,251 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2024-11-09 15:16:52,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:52,252 INFO L85 PathProgramCache]: Analyzing trace with hash -529568836, now seen corresponding path program 1 times [2024-11-09 15:16:52,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:52,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507537073] [2024-11-09 15:16:52,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:52,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:52,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:52,282 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:16:52,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:52,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507537073] [2024-11-09 15:16:52,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507537073] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:16:52,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904401266] [2024-11-09 15:16:52,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:52,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:16:52,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:16:52,285 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:16:52,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 15:16:52,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:52,355 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 15:16:52,356 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:16:52,377 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:16:52,378 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:16:52,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904401266] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:16:52,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:16:52,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2024-11-09 15:16:52,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230469317] [2024-11-09 15:16:52,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:16:52,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:16:52,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:52,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:16:52,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 15:16:52,384 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 73 [2024-11-09 15:16:52,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 77 transitions, 424 flow. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:52,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:52,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 73 [2024-11-09 15:16:52,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:53,381 INFO L124 PetriNetUnfolderBase]: 6873/12696 cut-off events. [2024-11-09 15:16:53,381 INFO L125 PetriNetUnfolderBase]: For 4421/4532 co-relation queries the response was YES. [2024-11-09 15:16:53,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28964 conditions, 12696 events. 6873/12696 cut-off events. For 4421/4532 co-relation queries the response was YES. Maximal size of possible extension queue 1045. Compared 118557 event pairs, 2191 based on Foata normal form. 129/11551 useless extension candidates. Maximal degree in co-relation 28941. Up to 8370 conditions per place. [2024-11-09 15:16:53,600 INFO L140 encePairwiseOnDemand]: 69/73 looper letters, 38 selfloop transitions, 6 changer transitions 0/86 dead transitions. [2024-11-09 15:16:53,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 86 transitions, 536 flow [2024-11-09 15:16:53,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:16:53,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:16:53,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 183 transitions. [2024-11-09 15:16:53,602 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6267123287671232 [2024-11-09 15:16:53,602 INFO L175 Difference]: Start difference. First operand has 87 places, 77 transitions, 424 flow. Second operand 4 states and 183 transitions. [2024-11-09 15:16:53,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 86 transitions, 536 flow [2024-11-09 15:16:53,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 86 transitions, 528 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-09 15:16:53,630 INFO L231 Difference]: Finished difference. Result has 88 places, 76 transitions, 422 flow [2024-11-09 15:16:53,630 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=422, PETRI_PLACES=88, PETRI_TRANSITIONS=76} [2024-11-09 15:16:53,630 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 31 predicate places. [2024-11-09 15:16:53,631 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 76 transitions, 422 flow [2024-11-09 15:16:53,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:53,631 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:53,631 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:53,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-09 15:16:53,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-09 15:16:53,835 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2024-11-09 15:16:53,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:53,836 INFO L85 PathProgramCache]: Analyzing trace with hash 763235624, now seen corresponding path program 1 times [2024-11-09 15:16:53,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:53,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545208645] [2024-11-09 15:16:53,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:53,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:53,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:53,862 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:16:53,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:53,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545208645] [2024-11-09 15:16:53,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545208645] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:16:53,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518939779] [2024-11-09 15:16:53,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:53,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:16:53,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:16:53,865 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:16:53,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 15:16:53,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:53,928 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 15:16:53,929 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:16:53,944 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:16:53,945 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:16:53,969 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:16:53,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518939779] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:16:53,969 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:16:53,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-09 15:16:53,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089991453] [2024-11-09 15:16:53,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:16:53,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 15:16:53,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:53,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 15:16:53,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-09 15:16:53,979 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 73 [2024-11-09 15:16:53,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 76 transitions, 422 flow. Second operand has 7 states, 7 states have (on average 40.42857142857143) internal successors, (283), 7 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:53,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:53,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 73 [2024-11-09 15:16:53,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:54,751 INFO L124 PetriNetUnfolderBase]: 6662/11790 cut-off events. [2024-11-09 15:16:54,752 INFO L125 PetriNetUnfolderBase]: For 4143/4182 co-relation queries the response was YES. [2024-11-09 15:16:54,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26907 conditions, 11790 events. 6662/11790 cut-off events. For 4143/4182 co-relation queries the response was YES. Maximal size of possible extension queue 1022. Compared 104278 event pairs, 1796 based on Foata normal form. 1/11059 useless extension candidates. Maximal degree in co-relation 26883. Up to 8489 conditions per place. [2024-11-09 15:16:54,827 INFO L140 encePairwiseOnDemand]: 69/73 looper letters, 53 selfloop transitions, 10 changer transitions 0/105 dead transitions. [2024-11-09 15:16:54,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 105 transitions, 656 flow [2024-11-09 15:16:54,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 15:16:54,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 15:16:54,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 273 transitions. [2024-11-09 15:16:54,829 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6232876712328768 [2024-11-09 15:16:54,829 INFO L175 Difference]: Start difference. First operand has 88 places, 76 transitions, 422 flow. Second operand 6 states and 273 transitions. [2024-11-09 15:16:54,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 105 transitions, 656 flow [2024-11-09 15:16:54,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 105 transitions, 647 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 15:16:54,853 INFO L231 Difference]: Finished difference. Result has 90 places, 78 transitions, 449 flow [2024-11-09 15:16:54,853 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=449, PETRI_PLACES=90, PETRI_TRANSITIONS=78} [2024-11-09 15:16:54,853 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 33 predicate places. [2024-11-09 15:16:54,853 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 78 transitions, 449 flow [2024-11-09 15:16:54,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 40.42857142857143) internal successors, (283), 7 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:54,854 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:54,854 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:54,871 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 15:16:55,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:16:55,055 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2024-11-09 15:16:55,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:55,056 INFO L85 PathProgramCache]: Analyzing trace with hash 763241765, now seen corresponding path program 1 times [2024-11-09 15:16:55,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:55,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351898249] [2024-11-09 15:16:55,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:55,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:55,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:55,099 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 15:16:55,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:55,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351898249] [2024-11-09 15:16:55,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351898249] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:16:55,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:16:55,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:16:55,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234785068] [2024-11-09 15:16:55,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:16:55,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 15:16:55,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:55,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 15:16:55,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 15:16:55,136 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 73 [2024-11-09 15:16:55,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 78 transitions, 449 flow. Second operand has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:55,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:55,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 73 [2024-11-09 15:16:55,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:56,983 INFO L124 PetriNetUnfolderBase]: 17243/27632 cut-off events. [2024-11-09 15:16:56,984 INFO L125 PetriNetUnfolderBase]: For 31068/32465 co-relation queries the response was YES. [2024-11-09 15:16:57,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75470 conditions, 27632 events. 17243/27632 cut-off events. For 31068/32465 co-relation queries the response was YES. Maximal size of possible extension queue 1386. Compared 217048 event pairs, 5115 based on Foata normal form. 732/28152 useless extension candidates. Maximal degree in co-relation 75446. Up to 13283 conditions per place. [2024-11-09 15:16:57,141 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 112 selfloop transitions, 14 changer transitions 0/144 dead transitions. [2024-11-09 15:16:57,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 144 transitions, 1039 flow [2024-11-09 15:16:57,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 15:16:57,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 15:16:57,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 252 transitions. [2024-11-09 15:16:57,143 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5753424657534246 [2024-11-09 15:16:57,143 INFO L175 Difference]: Start difference. First operand has 90 places, 78 transitions, 449 flow. Second operand 6 states and 252 transitions. [2024-11-09 15:16:57,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 144 transitions, 1039 flow [2024-11-09 15:16:57,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 144 transitions, 991 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-11-09 15:16:57,247 INFO L231 Difference]: Finished difference. Result has 93 places, 78 transitions, 469 flow [2024-11-09 15:16:57,247 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=469, PETRI_PLACES=93, PETRI_TRANSITIONS=78} [2024-11-09 15:16:57,248 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 36 predicate places. [2024-11-09 15:16:57,248 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 78 transitions, 469 flow [2024-11-09 15:16:57,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:57,248 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:57,248 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:57,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-09 15:16:57,249 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2024-11-09 15:16:57,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:57,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1616072654, now seen corresponding path program 1 times [2024-11-09 15:16:57,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:57,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387355589] [2024-11-09 15:16:57,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:57,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:57,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:57,338 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:16:57,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:57,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387355589] [2024-11-09 15:16:57,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387355589] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:16:57,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557351806] [2024-11-09 15:16:57,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:57,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:16:57,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:16:57,341 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:16:57,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 15:16:57,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:57,410 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 15:16:57,412 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:16:57,517 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:16:57,518 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:16:57,667 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:16:57,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557351806] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:16:57,667 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:16:57,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2024-11-09 15:16:57,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612855356] [2024-11-09 15:16:57,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:16:57,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-09 15:16:57,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:57,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-09 15:16:57,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2024-11-09 15:16:57,865 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 73 [2024-11-09 15:16:57,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 78 transitions, 469 flow. Second operand has 22 states, 22 states have (on average 18.90909090909091) internal successors, (416), 22 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:57,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:57,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 73 [2024-11-09 15:16:57,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:17:13,401 INFO L124 PetriNetUnfolderBase]: 113349/168869 cut-off events. [2024-11-09 15:17:13,402 INFO L125 PetriNetUnfolderBase]: For 222059/226966 co-relation queries the response was YES. [2024-11-09 15:17:13,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 458578 conditions, 168869 events. 113349/168869 cut-off events. For 222059/226966 co-relation queries the response was YES. Maximal size of possible extension queue 5977. Compared 1392054 event pairs, 8181 based on Foata normal form. 2916/171554 useless extension candidates. Maximal degree in co-relation 458552. Up to 21790 conditions per place. [2024-11-09 15:17:14,308 INFO L140 encePairwiseOnDemand]: 57/73 looper letters, 1220 selfloop transitions, 449 changer transitions 0/1679 dead transitions. [2024-11-09 15:17:14,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 1679 transitions, 10771 flow [2024-11-09 15:17:14,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2024-11-09 15:17:14,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2024-11-09 15:17:14,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 3389 transitions. [2024-11-09 15:17:14,315 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4108376772942175 [2024-11-09 15:17:14,315 INFO L175 Difference]: Start difference. First operand has 93 places, 78 transitions, 469 flow. Second operand 113 states and 3389 transitions. [2024-11-09 15:17:14,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 1679 transitions, 10771 flow [2024-11-09 15:17:19,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 1679 transitions, 10736 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 15:17:19,137 INFO L231 Difference]: Finished difference. Result has 280 places, 531 transitions, 5516 flow [2024-11-09 15:17:19,137 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=113, PETRI_FLOW=5516, PETRI_PLACES=280, PETRI_TRANSITIONS=531} [2024-11-09 15:17:19,138 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 223 predicate places. [2024-11-09 15:17:19,138 INFO L471 AbstractCegarLoop]: Abstraction has has 280 places, 531 transitions, 5516 flow [2024-11-09 15:17:19,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 18.90909090909091) internal successors, (416), 22 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:17:19,138 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:17:19,138 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:17:19,150 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 15:17:19,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:17:19,339 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2024-11-09 15:17:19,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:17:19,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1560466281, now seen corresponding path program 1 times [2024-11-09 15:17:19,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:17:19,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704725826] [2024-11-09 15:17:19,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:17:19,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:17:19,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:17:19,400 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:17:19,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:17:19,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704725826] [2024-11-09 15:17:19,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704725826] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:17:19,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106226425] [2024-11-09 15:17:19,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:17:19,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:17:19,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:17:19,403 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:17:19,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 15:17:19,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:17:19,463 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:17:19,464 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:17:19,488 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:17:19,488 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:17:19,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106226425] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:17:19,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:17:19,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-09 15:17:19,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96562129] [2024-11-09 15:17:19,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:17:19,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 15:17:19,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:17:19,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 15:17:19,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 15:17:19,497 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 73 [2024-11-09 15:17:19,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 531 transitions, 5516 flow. Second operand has 6 states, 6 states have (on average 40.0) internal successors, (240), 6 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:17:19,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:17:19,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 73 [2024-11-09 15:17:19,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand