./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread-theta/unwind3-100.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.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/unwind3-100.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 51e84781857cfc73ae131a38742d9d6222707e54f6a010e2853f82c7770f5a96 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 06:45:41,173 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 06:45:41,228 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-09 06:45:41,232 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 06:45:41,233 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 06:45:41,251 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 06:45:41,252 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 06:45:41,252 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 06:45:41,252 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 06:45:41,252 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 06:45:41,252 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 06:45:41,252 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 06:45:41,252 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 06:45:41,253 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 06:45:41,253 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 06:45:41,253 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 06:45:41,253 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-09 06:45:41,253 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 06:45:41,253 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 06:45:41,253 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 06:45:41,253 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 06:45:41,253 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-09 06:45:41,253 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 06:45:41,253 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-09 06:45:41,253 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-09 06:45:41,253 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 06:45:41,253 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 06:45:41,253 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-09 06:45:41,253 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 06:45:41,253 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 06:45:41,253 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 06:45:41,253 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 06:45:41,254 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 06:45:41,254 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 06:45:41,254 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:45:41,254 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 06:45:41,254 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 06:45:41,254 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-09 06:45:41,254 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-09 06:45:41,254 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 06:45:41,254 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 06:45:41,254 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 06:45:41,254 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 06:45:41,254 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 06:45:41,254 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 06:45:41,254 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 -> 51e84781857cfc73ae131a38742d9d6222707e54f6a010e2853f82c7770f5a96 [2025-03-09 06:45:41,475 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 06:45:41,481 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 06:45:41,484 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 06:45:41,484 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 06:45:41,485 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 06:45:41,485 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-theta/unwind3-100.i [2025-03-09 06:45:42,601 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ce0dbff4/a1223f4a259649faa9ff269aa5b0ab80/FLAG2ab8044ad [2025-03-09 06:45:42,865 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 06:45:42,866 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind3-100.i [2025-03-09 06:45:42,880 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ce0dbff4/a1223f4a259649faa9ff269aa5b0ab80/FLAG2ab8044ad [2025-03-09 06:45:42,898 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ce0dbff4/a1223f4a259649faa9ff269aa5b0ab80 [2025-03-09 06:45:42,900 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 06:45:42,901 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 06:45:42,902 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 06:45:42,903 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 06:45:42,907 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 06:45:42,907 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:45:42" (1/1) ... [2025-03-09 06:45:42,908 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@526eabc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:45:42, skipping insertion in model container [2025-03-09 06:45:42,908 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:45:42" (1/1) ... [2025-03-09 06:45:42,940 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 06:45:43,188 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:45:43,197 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 06:45:43,226 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:45:43,248 INFO L204 MainTranslator]: Completed translation [2025-03-09 06:45:43,249 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:45:43 WrapperNode [2025-03-09 06:45:43,249 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 06:45:43,250 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 06:45:43,250 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 06:45:43,250 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 06:45:43,255 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:45:43" (1/1) ... [2025-03-09 06:45:43,264 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:45:43" (1/1) ... [2025-03-09 06:45:43,276 INFO L138 Inliner]: procedures = 169, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 66 [2025-03-09 06:45:43,277 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 06:45:43,277 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 06:45:43,277 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 06:45:43,278 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 06:45:43,282 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:45:43" (1/1) ... [2025-03-09 06:45:43,282 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:45:43" (1/1) ... [2025-03-09 06:45:43,284 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:45:43" (1/1) ... [2025-03-09 06:45:43,296 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]. [2025-03-09 06:45:43,297 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:45:43" (1/1) ... [2025-03-09 06:45:43,297 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:45:43" (1/1) ... [2025-03-09 06:45:43,300 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:45:43" (1/1) ... [2025-03-09 06:45:43,304 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:45:43" (1/1) ... [2025-03-09 06:45:43,305 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:45:43" (1/1) ... [2025-03-09 06:45:43,305 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:45:43" (1/1) ... [2025-03-09 06:45:43,306 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 06:45:43,307 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 06:45:43,307 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 06:45:43,307 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 06:45:43,312 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:45:43" (1/1) ... [2025-03-09 06:45:43,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:45:43,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:45:43,340 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) [2025-03-09 06:45:43,343 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 [2025-03-09 06:45:43,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 06:45:43,361 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2025-03-09 06:45:43,361 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2025-03-09 06:45:43,361 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2025-03-09 06:45:43,362 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2025-03-09 06:45:43,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-09 06:45:43,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 06:45:43,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 06:45:43,363 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-09 06:45:43,467 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 06:45:43,470 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 06:45:43,616 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-09 06:45:43,617 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 06:45:43,677 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 06:45:43,677 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 06:45:43,677 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:45:43 BoogieIcfgContainer [2025-03-09 06:45:43,677 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 06:45:43,680 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 06:45:43,680 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 06:45:43,686 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 06:45:43,686 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 06:45:42" (1/3) ... [2025-03-09 06:45:43,687 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ccf65e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:45:43, skipping insertion in model container [2025-03-09 06:45:43,687 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:45:43" (2/3) ... [2025-03-09 06:45:43,687 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ccf65e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:45:43, skipping insertion in model container [2025-03-09 06:45:43,687 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:45:43" (3/3) ... [2025-03-09 06:45:43,688 INFO L128 eAbstractionObserver]: Analyzing ICFG unwind3-100.i [2025-03-09 06:45:43,697 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 06:45:43,698 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG unwind3-100.i that has 3 procedures, 32 locations, 1 initial locations, 2 loop locations, and 8 error locations. [2025-03-09 06:45:43,699 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-09 06:45:43,733 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-09 06:45:43,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 33 transitions, 74 flow [2025-03-09 06:45:43,784 INFO L124 PetriNetUnfolderBase]: 2/47 cut-off events. [2025-03-09 06:45:43,786 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 06:45:43,790 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 9. Compared 132 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. [2025-03-09 06:45:43,790 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 33 transitions, 74 flow [2025-03-09 06:45:43,792 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 32 transitions, 71 flow [2025-03-09 06:45:43,801 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 06:45:43,809 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;@6faa00f4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 06:45:43,809 INFO L334 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2025-03-09 06:45:43,813 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 06:45:43,814 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2025-03-09 06:45:43,814 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 06:45:43,814 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:45:43,814 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:45:43,815 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 13 more)] === [2025-03-09 06:45:43,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:45:43,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1462562630, now seen corresponding path program 1 times [2025-03-09 06:45:43,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:45:43,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360436064] [2025-03-09 06:45:43,826 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:45:43,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:45:43,890 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 06:45:43,907 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 06:45:43,908 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:43,909 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:44,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:45:44,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:45:44,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360436064] [2025-03-09 06:45:44,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360436064] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:45:44,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:45:44,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:45:44,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51422040] [2025-03-09 06:45:44,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:45:44,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:45:44,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:45:44,079 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:45:44,079 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:45:44,120 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 33 [2025-03-09 06:45:44,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 71 flow. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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) [2025-03-09 06:45:44,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:45:44,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 33 [2025-03-09 06:45:44,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:45:44,254 INFO L124 PetriNetUnfolderBase]: 92/234 cut-off events. [2025-03-09 06:45:44,254 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-03-09 06:45:44,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 433 conditions, 234 events. 92/234 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1032 event pairs, 11 based on Foata normal form. 27/238 useless extension candidates. Maximal degree in co-relation 371. Up to 140 conditions per place. [2025-03-09 06:45:44,258 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 26 selfloop transitions, 3 changer transitions 0/41 dead transitions. [2025-03-09 06:45:44,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 41 transitions, 150 flow [2025-03-09 06:45:44,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 06:45:44,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 06:45:44,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 97 transitions. [2025-03-09 06:45:44,268 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5878787878787879 [2025-03-09 06:45:44,269 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 71 flow. Second operand 5 states and 97 transitions. [2025-03-09 06:45:44,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 41 transitions, 150 flow [2025-03-09 06:45:44,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 41 transitions, 148 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:45:44,274 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 72 flow [2025-03-09 06:45:44,275 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=72, PETRI_PLACES=38, PETRI_TRANSITIONS=30} [2025-03-09 06:45:44,278 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 1 predicate places. [2025-03-09 06:45:44,278 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 72 flow [2025-03-09 06:45:44,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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) [2025-03-09 06:45:44,278 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:45:44,278 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:45:44,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-09 06:45:44,278 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 13 more)] === [2025-03-09 06:45:44,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:45:44,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1462562687, now seen corresponding path program 1 times [2025-03-09 06:45:44,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:45:44,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714473734] [2025-03-09 06:45:44,279 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:45:44,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:45:44,290 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 06:45:44,297 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 06:45:44,297 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:44,297 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:44,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:45:44,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:45:44,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714473734] [2025-03-09 06:45:44,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714473734] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:45:44,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:45:44,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:45:44,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213332] [2025-03-09 06:45:44,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:45:44,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:45:44,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:45:44,341 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:45:44,341 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 06:45:44,346 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 33 [2025-03-09 06:45:44,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 30 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2025-03-09 06:45:44,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:45:44,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 33 [2025-03-09 06:45:44,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:45:44,400 INFO L124 PetriNetUnfolderBase]: 61/197 cut-off events. [2025-03-09 06:45:44,400 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2025-03-09 06:45:44,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354 conditions, 197 events. 61/197 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 925 event pairs, 18 based on Foata normal form. 4/183 useless extension candidates. Maximal degree in co-relation 290. Up to 114 conditions per place. [2025-03-09 06:45:44,404 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 19 selfloop transitions, 3 changer transitions 0/33 dead transitions. [2025-03-09 06:45:44,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 33 transitions, 124 flow [2025-03-09 06:45:44,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:45:44,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:45:44,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 66 transitions. [2025-03-09 06:45:44,406 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2025-03-09 06:45:44,407 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 72 flow. Second operand 3 states and 66 transitions. [2025-03-09 06:45:44,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 33 transitions, 124 flow [2025-03-09 06:45:44,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 33 transitions, 118 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-09 06:45:44,409 INFO L231 Difference]: Finished difference. Result has 36 places, 29 transitions, 76 flow [2025-03-09 06:45:44,409 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=36, PETRI_TRANSITIONS=29} [2025-03-09 06:45:44,409 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, -1 predicate places. [2025-03-09 06:45:44,409 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 29 transitions, 76 flow [2025-03-09 06:45:44,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2025-03-09 06:45:44,409 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:45:44,409 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:45:44,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-09 06:45:44,409 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 13 more)] === [2025-03-09 06:45:44,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:45:44,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1905198891, now seen corresponding path program 1 times [2025-03-09 06:45:44,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:45:44,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992386493] [2025-03-09 06:45:44,410 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:45:44,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:45:44,422 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 06:45:44,425 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 06:45:44,425 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:44,425 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:44,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:45:44,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:45:44,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992386493] [2025-03-09 06:45:44,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992386493] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:45:44,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:45:44,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:45:44,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690012548] [2025-03-09 06:45:44,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:45:44,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:45:44,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:45:44,499 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:45:44,499 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:45:44,515 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 33 [2025-03-09 06:45:44,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 29 transitions, 76 flow. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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) [2025-03-09 06:45:44,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:45:44,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 33 [2025-03-09 06:45:44,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:45:44,622 INFO L124 PetriNetUnfolderBase]: 61/174 cut-off events. [2025-03-09 06:45:44,623 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2025-03-09 06:45:44,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 344 conditions, 174 events. 61/174 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 680 event pairs, 6 based on Foata normal form. 13/183 useless extension candidates. Maximal degree in co-relation 284. Up to 60 conditions per place. [2025-03-09 06:45:44,624 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 31 selfloop transitions, 3 changer transitions 3/47 dead transitions. [2025-03-09 06:45:44,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 47 transitions, 200 flow [2025-03-09 06:45:44,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 06:45:44,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 06:45:44,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 105 transitions. [2025-03-09 06:45:44,625 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6363636363636364 [2025-03-09 06:45:44,625 INFO L175 Difference]: Start difference. First operand has 36 places, 29 transitions, 76 flow. Second operand 5 states and 105 transitions. [2025-03-09 06:45:44,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 47 transitions, 200 flow [2025-03-09 06:45:44,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 47 transitions, 195 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:45:44,627 INFO L231 Difference]: Finished difference. Result has 37 places, 26 transitions, 73 flow [2025-03-09 06:45:44,627 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=73, PETRI_PLACES=37, PETRI_TRANSITIONS=26} [2025-03-09 06:45:44,627 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 0 predicate places. [2025-03-09 06:45:44,627 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 26 transitions, 73 flow [2025-03-09 06:45:44,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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) [2025-03-09 06:45:44,628 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:45:44,628 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:45:44,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-09 06:45:44,628 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 13 more)] === [2025-03-09 06:45:44,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:45:44,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1906069814, now seen corresponding path program 1 times [2025-03-09 06:45:44,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:45:44,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346915218] [2025-03-09 06:45:44,629 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:45:44,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:45:44,639 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 06:45:44,642 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 06:45:44,642 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:44,642 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:44,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:45:44,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:45:44,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346915218] [2025-03-09 06:45:44,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346915218] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:45:44,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:45:44,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:45:44,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648315740] [2025-03-09 06:45:44,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:45:44,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:45:44,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:45:44,688 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:45:44,688 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:45:44,700 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 33 [2025-03-09 06:45:44,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 26 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2025-03-09 06:45:44,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:45:44,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 33 [2025-03-09 06:45:44,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:45:44,738 INFO L124 PetriNetUnfolderBase]: 46/143 cut-off events. [2025-03-09 06:45:44,738 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2025-03-09 06:45:44,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 295 conditions, 143 events. 46/143 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 563 event pairs, 11 based on Foata normal form. 1/135 useless extension candidates. Maximal degree in co-relation 272. Up to 81 conditions per place. [2025-03-09 06:45:44,740 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 17 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2025-03-09 06:45:44,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 29 transitions, 122 flow [2025-03-09 06:45:44,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:45:44,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:45:44,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 69 transitions. [2025-03-09 06:45:44,742 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5227272727272727 [2025-03-09 06:45:44,742 INFO L175 Difference]: Start difference. First operand has 37 places, 26 transitions, 73 flow. Second operand 4 states and 69 transitions. [2025-03-09 06:45:44,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 29 transitions, 122 flow [2025-03-09 06:45:44,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 29 transitions, 112 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-09 06:45:44,743 INFO L231 Difference]: Finished difference. Result has 35 places, 25 transitions, 68 flow [2025-03-09 06:45:44,743 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=68, PETRI_PLACES=35, PETRI_TRANSITIONS=25} [2025-03-09 06:45:44,743 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, -2 predicate places. [2025-03-09 06:45:44,744 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 25 transitions, 68 flow [2025-03-09 06:45:44,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2025-03-09 06:45:44,744 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:45:44,744 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:45:44,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-09 06:45:44,744 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 13 more)] === [2025-03-09 06:45:44,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:45:44,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1238343015, now seen corresponding path program 1 times [2025-03-09 06:45:44,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:45:44,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622701728] [2025-03-09 06:45:44,746 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:45:44,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:45:44,754 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-09 06:45:44,759 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 06:45:44,759 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:44,759 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:45:44,759 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 06:45:44,764 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-09 06:45:44,767 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 06:45:44,767 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:44,767 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:45:44,782 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-09 06:45:44,782 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-09 06:45:44,783 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 16 remaining) [2025-03-09 06:45:44,784 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2025-03-09 06:45:44,784 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2025-03-09 06:45:44,784 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 16 remaining) [2025-03-09 06:45:44,784 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 16 remaining) [2025-03-09 06:45:44,785 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 16 remaining) [2025-03-09 06:45:44,785 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 16 remaining) [2025-03-09 06:45:44,785 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 16 remaining) [2025-03-09 06:45:44,785 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 16 remaining) [2025-03-09 06:45:44,785 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 16 remaining) [2025-03-09 06:45:44,785 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 16 remaining) [2025-03-09 06:45:44,785 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 16 remaining) [2025-03-09 06:45:44,785 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2025-03-09 06:45:44,785 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2025-03-09 06:45:44,785 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2025-03-09 06:45:44,785 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2025-03-09 06:45:44,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-09 06:45:44,785 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2025-03-09 06:45:44,789 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-09 06:45:44,789 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-03-09 06:45:44,811 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-09 06:45:44,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 53 transitions, 126 flow [2025-03-09 06:45:44,819 INFO L124 PetriNetUnfolderBase]: 3/75 cut-off events. [2025-03-09 06:45:44,820 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-09 06:45:44,820 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 9. Compared 255 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. [2025-03-09 06:45:44,820 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 53 transitions, 126 flow [2025-03-09 06:45:44,821 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 40 transitions, 93 flow [2025-03-09 06:45:44,821 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 06:45:44,822 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;@6faa00f4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 06:45:44,822 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2025-03-09 06:45:44,823 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 06:45:44,823 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2025-03-09 06:45:44,823 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 06:45:44,823 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:45:44,823 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:45:44,824 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2025-03-09 06:45:44,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:45:44,824 INFO L85 PathProgramCache]: Analyzing trace with hash -101566366, now seen corresponding path program 1 times [2025-03-09 06:45:44,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:45:44,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111591011] [2025-03-09 06:45:44,824 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:45:44,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:45:44,852 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 06:45:44,856 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 06:45:44,857 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:44,857 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:44,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:45:44,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:45:44,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111591011] [2025-03-09 06:45:44,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111591011] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:45:44,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:45:44,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:45:44,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998292995] [2025-03-09 06:45:44,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:45:44,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:45:44,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:45:44,898 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:45:44,898 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:45:44,917 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 53 [2025-03-09 06:45:44,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 40 transitions, 93 flow. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 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) [2025-03-09 06:45:44,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:45:44,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 53 [2025-03-09 06:45:44,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:45:45,084 INFO L124 PetriNetUnfolderBase]: 962/1773 cut-off events. [2025-03-09 06:45:45,084 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2025-03-09 06:45:45,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3402 conditions, 1773 events. 962/1773 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 10442 event pairs, 103 based on Foata normal form. 151/1765 useless extension candidates. Maximal degree in co-relation 2943. Up to 654 conditions per place. [2025-03-09 06:45:45,092 INFO L140 encePairwiseOnDemand]: 45/53 looper letters, 61 selfloop transitions, 7 changer transitions 0/84 dead transitions. [2025-03-09 06:45:45,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 84 transitions, 331 flow [2025-03-09 06:45:45,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:45:45,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:45:45,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 206 transitions. [2025-03-09 06:45:45,093 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6477987421383647 [2025-03-09 06:45:45,093 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 93 flow. Second operand 6 states and 206 transitions. [2025-03-09 06:45:45,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 84 transitions, 331 flow [2025-03-09 06:45:45,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 84 transitions, 327 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:45:45,094 INFO L231 Difference]: Finished difference. Result has 54 places, 43 transitions, 135 flow [2025-03-09 06:45:45,095 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=135, PETRI_PLACES=54, PETRI_TRANSITIONS=43} [2025-03-09 06:45:45,095 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 7 predicate places. [2025-03-09 06:45:45,095 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 43 transitions, 135 flow [2025-03-09 06:45:45,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 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) [2025-03-09 06:45:45,095 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:45:45,095 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:45:45,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-09 06:45:45,095 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2025-03-09 06:45:45,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:45:45,096 INFO L85 PathProgramCache]: Analyzing trace with hash -101566423, now seen corresponding path program 1 times [2025-03-09 06:45:45,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:45:45,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693842503] [2025-03-09 06:45:45,096 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:45:45,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:45:45,101 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 06:45:45,102 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 06:45:45,103 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:45,103 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:45,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:45:45,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:45:45,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693842503] [2025-03-09 06:45:45,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693842503] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:45:45,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:45:45,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:45:45,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855221208] [2025-03-09 06:45:45,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:45:45,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:45:45,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:45:45,127 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:45:45,127 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 06:45:45,136 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2025-03-09 06:45:45,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 43 transitions, 135 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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) [2025-03-09 06:45:45,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:45:45,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2025-03-09 06:45:45,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:45:45,249 INFO L124 PetriNetUnfolderBase]: 694/1616 cut-off events. [2025-03-09 06:45:45,249 INFO L125 PetriNetUnfolderBase]: For 512/512 co-relation queries the response was YES. [2025-03-09 06:45:45,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3344 conditions, 1616 events. 694/1616 cut-off events. For 512/512 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 11453 event pairs, 479 based on Foata normal form. 4/1420 useless extension candidates. Maximal degree in co-relation 2344. Up to 1137 conditions per place. [2025-03-09 06:45:45,258 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 30 selfloop transitions, 3 changer transitions 0/50 dead transitions. [2025-03-09 06:45:45,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 50 transitions, 221 flow [2025-03-09 06:45:45,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:45:45,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:45:45,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 107 transitions. [2025-03-09 06:45:45,259 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6729559748427673 [2025-03-09 06:45:45,259 INFO L175 Difference]: Start difference. First operand has 54 places, 43 transitions, 135 flow. Second operand 3 states and 107 transitions. [2025-03-09 06:45:45,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 50 transitions, 221 flow [2025-03-09 06:45:45,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 50 transitions, 220 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:45:45,267 INFO L231 Difference]: Finished difference. Result has 56 places, 45 transitions, 155 flow [2025-03-09 06:45:45,267 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=155, PETRI_PLACES=56, PETRI_TRANSITIONS=45} [2025-03-09 06:45:45,268 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 9 predicate places. [2025-03-09 06:45:45,268 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 45 transitions, 155 flow [2025-03-09 06:45:45,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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) [2025-03-09 06:45:45,268 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:45:45,268 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:45:45,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-09 06:45:45,268 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2025-03-09 06:45:45,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:45:45,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1146410168, now seen corresponding path program 1 times [2025-03-09 06:45:45,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:45:45,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31787549] [2025-03-09 06:45:45,270 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:45:45,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:45:45,273 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 06:45:45,277 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 06:45:45,277 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:45,277 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:45,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:45:45,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:45:45,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31787549] [2025-03-09 06:45:45,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31787549] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:45:45,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:45:45,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:45:45,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867433546] [2025-03-09 06:45:45,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:45:45,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:45:45,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:45:45,306 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:45:45,306 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:45:45,331 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 53 [2025-03-09 06:45:45,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 45 transitions, 155 flow. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 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) [2025-03-09 06:45:45,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:45:45,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 53 [2025-03-09 06:45:45,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:45:45,492 INFO L124 PetriNetUnfolderBase]: 718/1382 cut-off events. [2025-03-09 06:45:45,493 INFO L125 PetriNetUnfolderBase]: For 630/707 co-relation queries the response was YES. [2025-03-09 06:45:45,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3157 conditions, 1382 events. 718/1382 cut-off events. For 630/707 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 7789 event pairs, 128 based on Foata normal form. 89/1432 useless extension candidates. Maximal degree in co-relation 3006. Up to 633 conditions per place. [2025-03-09 06:45:45,499 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 61 selfloop transitions, 6 changer transitions 0/83 dead transitions. [2025-03-09 06:45:45,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 83 transitions, 403 flow [2025-03-09 06:45:45,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:45:45,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:45:45,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 201 transitions. [2025-03-09 06:45:45,500 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6320754716981132 [2025-03-09 06:45:45,500 INFO L175 Difference]: Start difference. First operand has 56 places, 45 transitions, 155 flow. Second operand 6 states and 201 transitions. [2025-03-09 06:45:45,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 83 transitions, 403 flow [2025-03-09 06:45:45,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 83 transitions, 394 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 06:45:45,502 INFO L231 Difference]: Finished difference. Result has 59 places, 45 transitions, 171 flow [2025-03-09 06:45:45,503 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=171, PETRI_PLACES=59, PETRI_TRANSITIONS=45} [2025-03-09 06:45:45,503 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 12 predicate places. [2025-03-09 06:45:45,504 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 45 transitions, 171 flow [2025-03-09 06:45:45,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 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) [2025-03-09 06:45:45,504 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:45:45,504 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:45:45,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-09 06:45:45,504 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2025-03-09 06:45:45,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:45:45,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1147258251, now seen corresponding path program 1 times [2025-03-09 06:45:45,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:45:45,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942571480] [2025-03-09 06:45:45,505 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:45:45,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:45:45,510 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 06:45:45,512 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 06:45:45,514 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:45,514 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:45,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:45:45,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:45:45,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942571480] [2025-03-09 06:45:45,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942571480] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:45:45,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:45:45,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:45:45,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54249321] [2025-03-09 06:45:45,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:45:45,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:45:45,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:45:45,543 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:45:45,543 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:45:45,556 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 53 [2025-03-09 06:45:45,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 45 transitions, 171 flow. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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) [2025-03-09 06:45:45,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:45:45,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 53 [2025-03-09 06:45:45,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:45:45,676 INFO L124 PetriNetUnfolderBase]: 689/1540 cut-off events. [2025-03-09 06:45:45,676 INFO L125 PetriNetUnfolderBase]: For 1254/1254 co-relation queries the response was YES. [2025-03-09 06:45:45,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3598 conditions, 1540 events. 689/1540 cut-off events. For 1254/1254 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 10481 event pairs, 476 based on Foata normal form. 1/1396 useless extension candidates. Maximal degree in co-relation 2054. Up to 1122 conditions per place. [2025-03-09 06:45:45,684 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 31 selfloop transitions, 3 changer transitions 0/49 dead transitions. [2025-03-09 06:45:45,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 49 transitions, 257 flow [2025-03-09 06:45:45,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:45:45,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:45:45,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 114 transitions. [2025-03-09 06:45:45,685 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5377358490566038 [2025-03-09 06:45:45,685 INFO L175 Difference]: Start difference. First operand has 59 places, 45 transitions, 171 flow. Second operand 4 states and 114 transitions. [2025-03-09 06:45:45,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 49 transitions, 257 flow [2025-03-09 06:45:45,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 49 transitions, 241 flow, removed 3 selfloop flow, removed 3 redundant places. [2025-03-09 06:45:45,693 INFO L231 Difference]: Finished difference. Result has 59 places, 44 transitions, 161 flow [2025-03-09 06:45:45,693 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=161, PETRI_PLACES=59, PETRI_TRANSITIONS=44} [2025-03-09 06:45:45,695 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 12 predicate places. [2025-03-09 06:45:45,695 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 44 transitions, 161 flow [2025-03-09 06:45:45,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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) [2025-03-09 06:45:45,695 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:45:45,695 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:45:45,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-09 06:45:45,695 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2025-03-09 06:45:45,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:45:45,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1297181330, now seen corresponding path program 1 times [2025-03-09 06:45:45,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:45:45,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464840395] [2025-03-09 06:45:45,696 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:45:45,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:45:45,701 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-09 06:45:45,702 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-09 06:45:45,703 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:45,703 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:45,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:45:45,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:45:45,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464840395] [2025-03-09 06:45:45,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464840395] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:45:45,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:45:45,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:45:45,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050931986] [2025-03-09 06:45:45,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:45:45,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:45:45,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:45:45,741 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:45:45,741 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:45:45,746 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2025-03-09 06:45:45,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 44 transitions, 161 flow. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 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) [2025-03-09 06:45:45,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:45:45,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2025-03-09 06:45:45,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:45:45,878 INFO L124 PetriNetUnfolderBase]: 654/1507 cut-off events. [2025-03-09 06:45:45,878 INFO L125 PetriNetUnfolderBase]: For 701/733 co-relation queries the response was YES. [2025-03-09 06:45:45,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3274 conditions, 1507 events. 654/1507 cut-off events. For 701/733 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 10442 event pairs, 206 based on Foata normal form. 42/1418 useless extension candidates. Maximal degree in co-relation 1911. Up to 765 conditions per place. [2025-03-09 06:45:45,886 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 41 selfloop transitions, 3 changer transitions 0/59 dead transitions. [2025-03-09 06:45:45,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 59 transitions, 317 flow [2025-03-09 06:45:45,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:45:45,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:45:45,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 135 transitions. [2025-03-09 06:45:45,887 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6367924528301887 [2025-03-09 06:45:45,887 INFO L175 Difference]: Start difference. First operand has 59 places, 44 transitions, 161 flow. Second operand 4 states and 135 transitions. [2025-03-09 06:45:45,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 59 transitions, 317 flow [2025-03-09 06:45:45,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 59 transitions, 311 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-09 06:45:45,890 INFO L231 Difference]: Finished difference. Result has 58 places, 43 transitions, 157 flow [2025-03-09 06:45:45,890 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=157, PETRI_PLACES=58, PETRI_TRANSITIONS=43} [2025-03-09 06:45:45,891 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 11 predicate places. [2025-03-09 06:45:45,891 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 43 transitions, 157 flow [2025-03-09 06:45:45,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 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) [2025-03-09 06:45:45,891 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:45:45,891 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:45:45,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-09 06:45:45,891 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2025-03-09 06:45:45,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:45:45,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1297181611, now seen corresponding path program 1 times [2025-03-09 06:45:45,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:45:45,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558941431] [2025-03-09 06:45:45,894 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:45:45,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:45:45,901 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-09 06:45:45,906 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-09 06:45:45,906 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:45,906 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:45,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:45:45,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:45:45,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558941431] [2025-03-09 06:45:45,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558941431] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:45:45,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:45:45,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:45:45,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189250543] [2025-03-09 06:45:45,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:45:45,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:45:45,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:45:45,943 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:45:45,943 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:45:45,961 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 53 [2025-03-09 06:45:45,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 43 transitions, 157 flow. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 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) [2025-03-09 06:45:45,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:45:45,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 53 [2025-03-09 06:45:45,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:45:46,167 INFO L124 PetriNetUnfolderBase]: 914/1727 cut-off events. [2025-03-09 06:45:46,168 INFO L125 PetriNetUnfolderBase]: For 906/940 co-relation queries the response was YES. [2025-03-09 06:45:46,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4083 conditions, 1727 events. 914/1727 cut-off events. For 906/940 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 10367 event pairs, 102 based on Foata normal form. 52/1767 useless extension candidates. Maximal degree in co-relation 2429. Up to 485 conditions per place. [2025-03-09 06:45:46,177 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 61 selfloop transitions, 9 changer transitions 0/85 dead transitions. [2025-03-09 06:45:46,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 85 transitions, 427 flow [2025-03-09 06:45:46,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:45:46,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:45:46,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 198 transitions. [2025-03-09 06:45:46,178 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6226415094339622 [2025-03-09 06:45:46,178 INFO L175 Difference]: Start difference. First operand has 58 places, 43 transitions, 157 flow. Second operand 6 states and 198 transitions. [2025-03-09 06:45:46,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 85 transitions, 427 flow [2025-03-09 06:45:46,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 85 transitions, 419 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 06:45:46,182 INFO L231 Difference]: Finished difference. Result has 65 places, 47 transitions, 214 flow [2025-03-09 06:45:46,183 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=214, PETRI_PLACES=65, PETRI_TRANSITIONS=47} [2025-03-09 06:45:46,183 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 18 predicate places. [2025-03-09 06:45:46,184 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 47 transitions, 214 flow [2025-03-09 06:45:46,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 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) [2025-03-09 06:45:46,184 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:45:46,184 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:45:46,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-09 06:45:46,184 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2025-03-09 06:45:46,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:45:46,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1557915751, now seen corresponding path program 1 times [2025-03-09 06:45:46,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:45:46,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255121840] [2025-03-09 06:45:46,184 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:45:46,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:45:46,190 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-09 06:45:46,192 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 06:45:46,192 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:46,192 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:46,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:45:46,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:45:46,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255121840] [2025-03-09 06:45:46,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255121840] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:45:46,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:45:46,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:45:46,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118943025] [2025-03-09 06:45:46,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:45:46,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:45:46,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:45:46,224 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:45:46,224 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:45:46,229 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2025-03-09 06:45:46,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 47 transitions, 214 flow. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 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) [2025-03-09 06:45:46,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:45:46,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2025-03-09 06:45:46,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:45:46,357 INFO L124 PetriNetUnfolderBase]: 734/1651 cut-off events. [2025-03-09 06:45:46,358 INFO L125 PetriNetUnfolderBase]: For 2041/2141 co-relation queries the response was YES. [2025-03-09 06:45:46,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3915 conditions, 1651 events. 734/1651 cut-off events. For 2041/2141 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 11660 event pairs, 153 based on Foata normal form. 40/1618 useless extension candidates. Maximal degree in co-relation 2805. Up to 1060 conditions per place. [2025-03-09 06:45:46,365 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 47 selfloop transitions, 4 changer transitions 0/67 dead transitions. [2025-03-09 06:45:46,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 67 transitions, 437 flow [2025-03-09 06:45:46,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:45:46,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:45:46,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 136 transitions. [2025-03-09 06:45:46,367 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6415094339622641 [2025-03-09 06:45:46,367 INFO L175 Difference]: Start difference. First operand has 65 places, 47 transitions, 214 flow. Second operand 4 states and 136 transitions. [2025-03-09 06:45:46,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 67 transitions, 437 flow [2025-03-09 06:45:46,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 67 transitions, 432 flow, removed 2 selfloop flow, removed 1 redundant places. [2025-03-09 06:45:46,371 INFO L231 Difference]: Finished difference. Result has 67 places, 47 transitions, 225 flow [2025-03-09 06:45:46,371 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=225, PETRI_PLACES=67, PETRI_TRANSITIONS=47} [2025-03-09 06:45:46,372 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 20 predicate places. [2025-03-09 06:45:46,372 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 47 transitions, 225 flow [2025-03-09 06:45:46,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 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) [2025-03-09 06:45:46,372 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:45:46,372 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:45:46,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-09 06:45:46,373 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2025-03-09 06:45:46,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:45:46,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1557924502, now seen corresponding path program 1 times [2025-03-09 06:45:46,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:45:46,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154914206] [2025-03-09 06:45:46,373 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:45:46,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:45:46,378 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-09 06:45:46,381 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 06:45:46,383 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:46,383 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:46,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:45:46,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:45:46,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154914206] [2025-03-09 06:45:46,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154914206] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:45:46,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:45:46,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:45:46,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417065699] [2025-03-09 06:45:46,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:45:46,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:45:46,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:45:46,414 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:45:46,414 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:45:46,436 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 53 [2025-03-09 06:45:46,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 47 transitions, 225 flow. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 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) [2025-03-09 06:45:46,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:45:46,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 53 [2025-03-09 06:45:46,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:45:46,594 INFO L124 PetriNetUnfolderBase]: 828/1613 cut-off events. [2025-03-09 06:45:46,595 INFO L125 PetriNetUnfolderBase]: For 1883/1883 co-relation queries the response was YES. [2025-03-09 06:45:46,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4284 conditions, 1613 events. 828/1613 cut-off events. For 1883/1883 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 9788 event pairs, 180 based on Foata normal form. 52/1653 useless extension candidates. Maximal degree in co-relation 2817. Up to 764 conditions per place. [2025-03-09 06:45:46,602 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 61 selfloop transitions, 7 changer transitions 0/82 dead transitions. [2025-03-09 06:45:46,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 82 transitions, 487 flow [2025-03-09 06:45:46,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:45:46,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:45:46,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 196 transitions. [2025-03-09 06:45:46,604 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6163522012578616 [2025-03-09 06:45:46,604 INFO L175 Difference]: Start difference. First operand has 67 places, 47 transitions, 225 flow. Second operand 6 states and 196 transitions. [2025-03-09 06:45:46,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 82 transitions, 487 flow [2025-03-09 06:45:46,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 82 transitions, 461 flow, removed 6 selfloop flow, removed 3 redundant places. [2025-03-09 06:45:46,611 INFO L231 Difference]: Finished difference. Result has 69 places, 46 transitions, 222 flow [2025-03-09 06:45:46,611 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=222, PETRI_PLACES=69, PETRI_TRANSITIONS=46} [2025-03-09 06:45:46,612 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 22 predicate places. [2025-03-09 06:45:46,612 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 46 transitions, 222 flow [2025-03-09 06:45:46,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 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) [2025-03-09 06:45:46,612 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:45:46,613 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:45:46,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-09 06:45:46,613 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2025-03-09 06:45:46,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:45:46,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1558735843, now seen corresponding path program 1 times [2025-03-09 06:45:46,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:45:46,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270840153] [2025-03-09 06:45:46,613 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:45:46,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:45:46,618 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-09 06:45:46,621 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 06:45:46,622 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:46,622 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:46,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:45:46,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:45:46,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270840153] [2025-03-09 06:45:46,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270840153] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:45:46,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:45:46,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:45:46,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241164094] [2025-03-09 06:45:46,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:45:46,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:45:46,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:45:46,656 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:45:46,656 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:45:46,662 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 53 [2025-03-09 06:45:46,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 46 transitions, 222 flow. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 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) [2025-03-09 06:45:46,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:45:46,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 53 [2025-03-09 06:45:46,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:45:46,856 INFO L124 PetriNetUnfolderBase]: 1364/2747 cut-off events. [2025-03-09 06:45:46,856 INFO L125 PetriNetUnfolderBase]: For 3483/3551 co-relation queries the response was YES. [2025-03-09 06:45:46,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6923 conditions, 2747 events. 1364/2747 cut-off events. For 3483/3551 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 19248 event pairs, 914 based on Foata normal form. 100/2745 useless extension candidates. Maximal degree in co-relation 4121. Up to 1602 conditions per place. [2025-03-09 06:45:46,873 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 62 selfloop transitions, 3 changer transitions 0/79 dead transitions. [2025-03-09 06:45:46,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 79 transitions, 568 flow [2025-03-09 06:45:46,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:45:46,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:45:46,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 145 transitions. [2025-03-09 06:45:46,877 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6839622641509434 [2025-03-09 06:45:46,877 INFO L175 Difference]: Start difference. First operand has 69 places, 46 transitions, 222 flow. Second operand 4 states and 145 transitions. [2025-03-09 06:45:46,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 79 transitions, 568 flow [2025-03-09 06:45:46,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 79 transitions, 539 flow, removed 2 selfloop flow, removed 4 redundant places. [2025-03-09 06:45:46,885 INFO L231 Difference]: Finished difference. Result has 70 places, 48 transitions, 229 flow [2025-03-09 06:45:46,885 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=229, PETRI_PLACES=70, PETRI_TRANSITIONS=48} [2025-03-09 06:45:46,886 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 23 predicate places. [2025-03-09 06:45:46,886 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 48 transitions, 229 flow [2025-03-09 06:45:46,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 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) [2025-03-09 06:45:46,886 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:45:46,886 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-03-09 06:45:46,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-09 06:45:46,886 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2025-03-09 06:45:46,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:45:46,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1786541218, now seen corresponding path program 1 times [2025-03-09 06:45:46,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:45:46,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457214573] [2025-03-09 06:45:46,887 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:45:46,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:45:46,891 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-09 06:45:46,894 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-09 06:45:46,896 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:46,896 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:45:46,896 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 06:45:46,898 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-09 06:45:46,901 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-09 06:45:46,902 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:46,902 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:45:46,905 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-09 06:45:46,906 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-09 06:45:46,906 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2025-03-09 06:45:46,906 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 22 remaining) [2025-03-09 06:45:46,906 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 22 remaining) [2025-03-09 06:45:46,906 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 22 remaining) [2025-03-09 06:45:46,907 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 22 remaining) [2025-03-09 06:45:46,907 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 22 remaining) [2025-03-09 06:45:46,907 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 22 remaining) [2025-03-09 06:45:46,907 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 22 remaining) [2025-03-09 06:45:46,907 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 22 remaining) [2025-03-09 06:45:46,907 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 22 remaining) [2025-03-09 06:45:46,907 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 22 remaining) [2025-03-09 06:45:46,907 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 22 remaining) [2025-03-09 06:45:46,907 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 22 remaining) [2025-03-09 06:45:46,907 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 22 remaining) [2025-03-09 06:45:46,907 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 22 remaining) [2025-03-09 06:45:46,907 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 22 remaining) [2025-03-09 06:45:46,908 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 22 remaining) [2025-03-09 06:45:46,908 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 22 remaining) [2025-03-09 06:45:46,908 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 22 remaining) [2025-03-09 06:45:46,908 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 22 remaining) [2025-03-09 06:45:46,908 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 22 remaining) [2025-03-09 06:45:46,908 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 22 remaining) [2025-03-09 06:45:46,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-09 06:45:46,908 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:45:46,909 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-09 06:45:46,909 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-03-09 06:45:46,929 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-09 06:45:46,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 73 transitions, 182 flow [2025-03-09 06:45:46,934 INFO L124 PetriNetUnfolderBase]: 4/103 cut-off events. [2025-03-09 06:45:46,935 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-03-09 06:45:46,935 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 9. Compared 370 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. [2025-03-09 06:45:46,935 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 73 transitions, 182 flow [2025-03-09 06:45:46,935 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 48 transitions, 117 flow [2025-03-09 06:45:46,936 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 06:45:46,936 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;@6faa00f4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 06:45:46,936 INFO L334 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2025-03-09 06:45:46,937 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 06:45:46,937 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2025-03-09 06:45:46,937 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 06:45:46,937 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:45:46,937 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:45:46,937 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-03-09 06:45:46,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:45:46,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1873663394, now seen corresponding path program 1 times [2025-03-09 06:45:46,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:45:46,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293704455] [2025-03-09 06:45:46,938 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:45:46,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:45:46,941 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 06:45:46,943 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 06:45:46,943 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:46,943 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:46,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:45:46,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:45:46,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293704455] [2025-03-09 06:45:46,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293704455] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:45:46,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:45:46,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:45:46,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65076987] [2025-03-09 06:45:46,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:45:46,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:45:46,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:45:46,965 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:45:46,965 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:45:46,985 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2025-03-09 06:45:46,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 48 transitions, 117 flow. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:46,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:45:46,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2025-03-09 06:45:46,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:45:47,546 INFO L124 PetriNetUnfolderBase]: 6854/10448 cut-off events. [2025-03-09 06:45:47,546 INFO L125 PetriNetUnfolderBase]: For 393/393 co-relation queries the response was YES. [2025-03-09 06:45:47,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20682 conditions, 10448 events. 6854/10448 cut-off events. For 393/393 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 66414 event pairs, 914 based on Foata normal form. 690/10383 useless extension candidates. Maximal degree in co-relation 13215. Up to 3601 conditions per place. [2025-03-09 06:45:47,581 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 78 selfloop transitions, 9 changer transitions 0/107 dead transitions. [2025-03-09 06:45:47,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 107 transitions, 444 flow [2025-03-09 06:45:47,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:45:47,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:45:47,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 279 transitions. [2025-03-09 06:45:47,583 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.636986301369863 [2025-03-09 06:45:47,583 INFO L175 Difference]: Start difference. First operand has 57 places, 48 transitions, 117 flow. Second operand 6 states and 279 transitions. [2025-03-09 06:45:47,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 107 transitions, 444 flow [2025-03-09 06:45:47,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 107 transitions, 432 flow, removed 4 selfloop flow, removed 1 redundant places. [2025-03-09 06:45:47,584 INFO L231 Difference]: Finished difference. Result has 64 places, 54 transitions, 179 flow [2025-03-09 06:45:47,585 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=179, PETRI_PLACES=64, PETRI_TRANSITIONS=54} [2025-03-09 06:45:47,585 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 7 predicate places. [2025-03-09 06:45:47,585 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 54 transitions, 179 flow [2025-03-09 06:45:47,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:47,585 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:45:47,585 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:45:47,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-09 06:45:47,586 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-03-09 06:45:47,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:45:47,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1873663899, now seen corresponding path program 1 times [2025-03-09 06:45:47,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:45:47,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397699742] [2025-03-09 06:45:47,586 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:45:47,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:45:47,589 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 06:45:47,590 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 06:45:47,590 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:47,590 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:47,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:45:47,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:45:47,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397699742] [2025-03-09 06:45:47,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397699742] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:45:47,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:45:47,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:45:47,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603875599] [2025-03-09 06:45:47,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:45:47,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:45:47,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:45:47,603 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:45:47,603 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 06:45:47,607 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 73 [2025-03-09 06:45:47,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 54 transitions, 179 flow. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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) [2025-03-09 06:45:47,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:45:47,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 73 [2025-03-09 06:45:47,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:45:48,113 INFO L124 PetriNetUnfolderBase]: 5199/9942 cut-off events. [2025-03-09 06:45:48,113 INFO L125 PetriNetUnfolderBase]: For 4019/4109 co-relation queries the response was YES. [2025-03-09 06:45:48,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21276 conditions, 9942 events. 5199/9942 cut-off events. For 4019/4109 co-relation queries the response was YES. Maximal size of possible extension queue 589. Compared 83059 event pairs, 4027 based on Foata normal form. 64/8582 useless extension candidates. Maximal degree in co-relation 12824. Up to 7532 conditions per place. [2025-03-09 06:45:48,170 INFO L140 encePairwiseOnDemand]: 68/73 looper letters, 37 selfloop transitions, 3 changer transitions 0/61 dead transitions. [2025-03-09 06:45:48,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 61 transitions, 279 flow [2025-03-09 06:45:48,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:45:48,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:45:48,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 144 transitions. [2025-03-09 06:45:48,171 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6575342465753424 [2025-03-09 06:45:48,171 INFO L175 Difference]: Start difference. First operand has 64 places, 54 transitions, 179 flow. Second operand 3 states and 144 transitions. [2025-03-09 06:45:48,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 61 transitions, 279 flow [2025-03-09 06:45:48,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 61 transitions, 278 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:45:48,185 INFO L231 Difference]: Finished difference. Result has 66 places, 56 transitions, 199 flow [2025-03-09 06:45:48,186 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=199, PETRI_PLACES=66, PETRI_TRANSITIONS=56} [2025-03-09 06:45:48,186 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 9 predicate places. [2025-03-09 06:45:48,186 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 56 transitions, 199 flow [2025-03-09 06:45:48,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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) [2025-03-09 06:45:48,186 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:45:48,186 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:45:48,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-09 06:45:48,187 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-03-09 06:45:48,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:45:48,187 INFO L85 PathProgramCache]: Analyzing trace with hash 2045977235, now seen corresponding path program 1 times [2025-03-09 06:45:48,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:45:48,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331760866] [2025-03-09 06:45:48,187 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:45:48,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:45:48,191 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 06:45:48,193 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 06:45:48,193 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:48,193 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:48,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:45:48,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:45:48,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331760866] [2025-03-09 06:45:48,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331760866] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:45:48,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:45:48,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:45:48,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625926436] [2025-03-09 06:45:48,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:45:48,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:45:48,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:45:48,218 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:45:48,218 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:45:48,241 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2025-03-09 06:45:48,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 56 transitions, 199 flow. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:48,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:45:48,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2025-03-09 06:45:48,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:45:48,674 INFO L124 PetriNetUnfolderBase]: 5448/8477 cut-off events. [2025-03-09 06:45:48,674 INFO L125 PetriNetUnfolderBase]: For 4406/4913 co-relation queries the response was YES. [2025-03-09 06:45:48,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20557 conditions, 8477 events. 5448/8477 cut-off events. For 4406/4913 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 53213 event pairs, 1178 based on Foata normal form. 429/8745 useless extension candidates. Maximal degree in co-relation 20444. Up to 4245 conditions per place. [2025-03-09 06:45:48,724 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 77 selfloop transitions, 8 changer transitions 0/105 dead transitions. [2025-03-09 06:45:48,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 105 transitions, 532 flow [2025-03-09 06:45:48,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:45:48,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:45:48,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 271 transitions. [2025-03-09 06:45:48,725 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6187214611872146 [2025-03-09 06:45:48,725 INFO L175 Difference]: Start difference. First operand has 66 places, 56 transitions, 199 flow. Second operand 6 states and 271 transitions. [2025-03-09 06:45:48,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 105 transitions, 532 flow [2025-03-09 06:45:48,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 105 transitions, 522 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 06:45:48,730 INFO L231 Difference]: Finished difference. Result has 69 places, 57 transitions, 227 flow [2025-03-09 06:45:48,730 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=227, PETRI_PLACES=69, PETRI_TRANSITIONS=57} [2025-03-09 06:45:48,731 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 12 predicate places. [2025-03-09 06:45:48,731 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 57 transitions, 227 flow [2025-03-09 06:45:48,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:48,731 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:45:48,732 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:45:48,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-09 06:45:48,732 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-03-09 06:45:48,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:45:48,732 INFO L85 PathProgramCache]: Analyzing trace with hash 2046799499, now seen corresponding path program 1 times [2025-03-09 06:45:48,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:45:48,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717162374] [2025-03-09 06:45:48,732 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:45:48,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:45:48,736 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 06:45:48,738 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 06:45:48,738 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:48,738 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:48,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:45:48,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:45:48,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717162374] [2025-03-09 06:45:48,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717162374] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:45:48,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:45:48,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:45:48,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467747861] [2025-03-09 06:45:48,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:45:48,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:45:48,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:45:48,764 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:45:48,764 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:45:48,780 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 73 [2025-03-09 06:45:48,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 57 transitions, 227 flow. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 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) [2025-03-09 06:45:48,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:45:48,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 73 [2025-03-09 06:45:48,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:45:49,184 INFO L124 PetriNetUnfolderBase]: 5194/9849 cut-off events. [2025-03-09 06:45:49,185 INFO L125 PetriNetUnfolderBase]: For 7065/7155 co-relation queries the response was YES. [2025-03-09 06:45:49,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22827 conditions, 9849 events. 5194/9849 cut-off events. For 7065/7155 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 81516 event pairs, 4024 based on Foata normal form. 61/8660 useless extension candidates. Maximal degree in co-relation 10041. Up to 7517 conditions per place. [2025-03-09 06:45:49,277 INFO L140 encePairwiseOnDemand]: 69/73 looper letters, 39 selfloop transitions, 3 changer transitions 0/61 dead transitions. [2025-03-09 06:45:49,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 61 transitions, 329 flow [2025-03-09 06:45:49,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:45:49,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:45:49,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 154 transitions. [2025-03-09 06:45:49,278 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5273972602739726 [2025-03-09 06:45:49,278 INFO L175 Difference]: Start difference. First operand has 69 places, 57 transitions, 227 flow. Second operand 4 states and 154 transitions. [2025-03-09 06:45:49,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 61 transitions, 329 flow [2025-03-09 06:45:49,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 61 transitions, 319 flow, removed 2 selfloop flow, removed 2 redundant places. [2025-03-09 06:45:49,287 INFO L231 Difference]: Finished difference. Result has 70 places, 56 transitions, 222 flow [2025-03-09 06:45:49,287 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=222, PETRI_PLACES=70, PETRI_TRANSITIONS=56} [2025-03-09 06:45:49,287 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 13 predicate places. [2025-03-09 06:45:49,288 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 56 transitions, 222 flow [2025-03-09 06:45:49,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 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) [2025-03-09 06:45:49,288 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:45:49,288 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:45:49,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-09 06:45:49,288 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-03-09 06:45:49,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:45:49,288 INFO L85 PathProgramCache]: Analyzing trace with hash -806255310, now seen corresponding path program 1 times [2025-03-09 06:45:49,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:45:49,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368949035] [2025-03-09 06:45:49,289 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:45:49,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:45:49,292 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-09 06:45:49,294 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-09 06:45:49,294 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:49,294 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:49,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:45:49,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:45:49,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368949035] [2025-03-09 06:45:49,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368949035] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:45:49,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:45:49,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:45:49,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028654972] [2025-03-09 06:45:49,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:45:49,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:45:49,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:45:49,319 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:45:49,319 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:45:49,324 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 73 [2025-03-09 06:45:49,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 56 transitions, 222 flow. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:49,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:45:49,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 73 [2025-03-09 06:45:49,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:45:49,784 INFO L124 PetriNetUnfolderBase]: 4929/9142 cut-off events. [2025-03-09 06:45:49,784 INFO L125 PetriNetUnfolderBase]: For 5926/6194 co-relation queries the response was YES. [2025-03-09 06:45:49,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20922 conditions, 9142 events. 4929/9142 cut-off events. For 5926/6194 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 74708 event pairs, 1612 based on Foata normal form. 292/8401 useless extension candidates. Maximal degree in co-relation 9182. Up to 4967 conditions per place. [2025-03-09 06:45:49,821 INFO L140 encePairwiseOnDemand]: 69/73 looper letters, 56 selfloop transitions, 3 changer transitions 0/78 dead transitions. [2025-03-09 06:45:49,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 78 transitions, 452 flow [2025-03-09 06:45:49,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:45:49,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:45:49,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 186 transitions. [2025-03-09 06:45:49,822 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.636986301369863 [2025-03-09 06:45:49,822 INFO L175 Difference]: Start difference. First operand has 70 places, 56 transitions, 222 flow. Second operand 4 states and 186 transitions. [2025-03-09 06:45:49,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 78 transitions, 452 flow [2025-03-09 06:45:49,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 78 transitions, 446 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-09 06:45:49,831 INFO L231 Difference]: Finished difference. Result has 69 places, 55 transitions, 218 flow [2025-03-09 06:45:49,831 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=218, PETRI_PLACES=69, PETRI_TRANSITIONS=55} [2025-03-09 06:45:49,831 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 12 predicate places. [2025-03-09 06:45:49,832 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 55 transitions, 218 flow [2025-03-09 06:45:49,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:49,832 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:45:49,832 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:45:49,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-03-09 06:45:49,832 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-03-09 06:45:49,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:45:49,832 INFO L85 PathProgramCache]: Analyzing trace with hash -806255253, now seen corresponding path program 1 times [2025-03-09 06:45:49,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:45:49,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92338824] [2025-03-09 06:45:49,833 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:45:49,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:45:49,837 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-09 06:45:49,840 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-09 06:45:49,840 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:49,840 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:49,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:45:49,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:45:49,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92338824] [2025-03-09 06:45:49,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92338824] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:45:49,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:45:49,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:45:49,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797843848] [2025-03-09 06:45:49,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:45:49,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:45:49,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:45:49,876 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:45:49,876 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:45:49,897 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2025-03-09 06:45:49,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 55 transitions, 218 flow. Second operand has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 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) [2025-03-09 06:45:49,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:45:49,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2025-03-09 06:45:49,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:45:50,831 INFO L124 PetriNetUnfolderBase]: 9554/15111 cut-off events. [2025-03-09 06:45:50,831 INFO L125 PetriNetUnfolderBase]: For 9589/9980 co-relation queries the response was YES. [2025-03-09 06:45:50,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37101 conditions, 15111 events. 9554/15111 cut-off events. For 9589/9980 co-relation queries the response was YES. Maximal size of possible extension queue 824. Compared 107873 event pairs, 1828 based on Foata normal form. 442/15287 useless extension candidates. Maximal degree in co-relation 20374. Up to 5319 conditions per place. [2025-03-09 06:45:50,880 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 83 selfloop transitions, 15 changer transitions 0/117 dead transitions. [2025-03-09 06:45:50,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 117 transitions, 650 flow [2025-03-09 06:45:50,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:45:50,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:45:50,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 271 transitions. [2025-03-09 06:45:50,882 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6187214611872146 [2025-03-09 06:45:50,882 INFO L175 Difference]: Start difference. First operand has 69 places, 55 transitions, 218 flow. Second operand 6 states and 271 transitions. [2025-03-09 06:45:50,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 117 transitions, 650 flow [2025-03-09 06:45:50,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 117 transitions, 642 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 06:45:50,912 INFO L231 Difference]: Finished difference. Result has 76 places, 65 transitions, 347 flow [2025-03-09 06:45:50,912 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=347, PETRI_PLACES=76, PETRI_TRANSITIONS=65} [2025-03-09 06:45:50,913 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 19 predicate places. [2025-03-09 06:45:50,913 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 65 transitions, 347 flow [2025-03-09 06:45:50,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 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) [2025-03-09 06:45:50,913 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:45:50,913 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:45:50,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-03-09 06:45:50,913 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-03-09 06:45:50,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:45:50,913 INFO L85 PathProgramCache]: Analyzing trace with hash 775889424, now seen corresponding path program 1 times [2025-03-09 06:45:50,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:45:50,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447256595] [2025-03-09 06:45:50,913 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:45:50,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:45:50,917 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-09 06:45:50,919 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 06:45:50,919 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:50,919 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:50,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:45:50,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:45:50,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447256595] [2025-03-09 06:45:50,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447256595] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:45:50,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:45:50,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:45:50,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157590145] [2025-03-09 06:45:50,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:45:50,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:45:50,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:45:50,936 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:45:50,936 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:45:50,940 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 73 [2025-03-09 06:45:50,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 65 transitions, 347 flow. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:50,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:45:50,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 73 [2025-03-09 06:45:50,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:45:51,630 INFO L124 PetriNetUnfolderBase]: 8084/14663 cut-off events. [2025-03-09 06:45:51,631 INFO L125 PetriNetUnfolderBase]: For 22955/23979 co-relation queries the response was YES. [2025-03-09 06:45:51,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37270 conditions, 14663 events. 8084/14663 cut-off events. For 22955/23979 co-relation queries the response was YES. Maximal size of possible extension queue 874. Compared 126164 event pairs, 4747 based on Foata normal form. 460/13518 useless extension candidates. Maximal degree in co-relation 22556. Up to 11574 conditions per place. [2025-03-09 06:45:51,682 INFO L140 encePairwiseOnDemand]: 69/73 looper letters, 64 selfloop transitions, 4 changer transitions 0/88 dead transitions. [2025-03-09 06:45:51,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 88 transitions, 620 flow [2025-03-09 06:45:51,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:45:51,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:45:51,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 187 transitions. [2025-03-09 06:45:51,683 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6404109589041096 [2025-03-09 06:45:51,683 INFO L175 Difference]: Start difference. First operand has 76 places, 65 transitions, 347 flow. Second operand 4 states and 187 transitions. [2025-03-09 06:45:51,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 88 transitions, 620 flow [2025-03-09 06:45:51,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 88 transitions, 619 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:45:51,704 INFO L231 Difference]: Finished difference. Result has 79 places, 67 transitions, 372 flow [2025-03-09 06:45:51,704 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=372, PETRI_PLACES=79, PETRI_TRANSITIONS=67} [2025-03-09 06:45:51,704 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 22 predicate places. [2025-03-09 06:45:51,704 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 67 transitions, 372 flow [2025-03-09 06:45:51,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:51,705 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:45:51,705 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:45:51,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-03-09 06:45:51,705 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-03-09 06:45:51,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:45:51,705 INFO L85 PathProgramCache]: Analyzing trace with hash 775891224, now seen corresponding path program 1 times [2025-03-09 06:45:51,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:45:51,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859650529] [2025-03-09 06:45:51,705 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:45:51,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:45:51,709 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-09 06:45:51,710 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 06:45:51,710 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:51,710 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:51,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:45:51,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:45:51,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859650529] [2025-03-09 06:45:51,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859650529] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:45:51,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:45:51,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:45:51,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255280275] [2025-03-09 06:45:51,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:45:51,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:45:51,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:45:51,736 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:45:51,736 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:45:51,759 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2025-03-09 06:45:51,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 67 transitions, 372 flow. Second operand has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 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) [2025-03-09 06:45:51,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:45:51,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2025-03-09 06:45:51,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:45:52,493 INFO L124 PetriNetUnfolderBase]: 9089/14462 cut-off events. [2025-03-09 06:45:52,493 INFO L125 PetriNetUnfolderBase]: For 20782/21509 co-relation queries the response was YES. [2025-03-09 06:45:52,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40309 conditions, 14462 events. 9089/14462 cut-off events. For 20782/21509 co-relation queries the response was YES. Maximal size of possible extension queue 810. Compared 103981 event pairs, 2686 based on Foata normal form. 546/14755 useless extension candidates. Maximal degree in co-relation 22355. Up to 7322 conditions per place. [2025-03-09 06:45:52,560 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 87 selfloop transitions, 11 changer transitions 0/117 dead transitions. [2025-03-09 06:45:52,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 117 transitions, 778 flow [2025-03-09 06:45:52,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:45:52,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:45:52,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 266 transitions. [2025-03-09 06:45:52,561 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6073059360730594 [2025-03-09 06:45:52,561 INFO L175 Difference]: Start difference. First operand has 79 places, 67 transitions, 372 flow. Second operand 6 states and 266 transitions. [2025-03-09 06:45:52,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 117 transitions, 778 flow [2025-03-09 06:45:52,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 117 transitions, 750 flow, removed 6 selfloop flow, removed 3 redundant places. [2025-03-09 06:45:52,626 INFO L231 Difference]: Finished difference. Result has 81 places, 66 transitions, 375 flow [2025-03-09 06:45:52,626 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=76, 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=375, PETRI_PLACES=81, PETRI_TRANSITIONS=66} [2025-03-09 06:45:52,626 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 24 predicate places. [2025-03-09 06:45:52,627 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 66 transitions, 375 flow [2025-03-09 06:45:52,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 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) [2025-03-09 06:45:52,627 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:45:52,627 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:45:52,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-03-09 06:45:52,627 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-03-09 06:45:52,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:45:52,627 INFO L85 PathProgramCache]: Analyzing trace with hash 776697599, now seen corresponding path program 1 times [2025-03-09 06:45:52,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:45:52,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253217637] [2025-03-09 06:45:52,627 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:45:52,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:45:52,630 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-09 06:45:52,632 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 06:45:52,632 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:52,632 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:52,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:45:52,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:45:52,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253217637] [2025-03-09 06:45:52,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253217637] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:45:52,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:45:52,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:45:52,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936839532] [2025-03-09 06:45:52,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:45:52,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:45:52,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:45:52,650 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:45:52,650 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:45:52,655 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 73 [2025-03-09 06:45:52,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 66 transitions, 375 flow. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 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) [2025-03-09 06:45:52,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:45:52,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 73 [2025-03-09 06:45:52,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:45:54,147 INFO L124 PetriNetUnfolderBase]: 14083/24654 cut-off events. [2025-03-09 06:45:54,147 INFO L125 PetriNetUnfolderBase]: For 39465/41401 co-relation queries the response was YES. [2025-03-09 06:45:54,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62773 conditions, 24654 events. 14083/24654 cut-off events. For 39465/41401 co-relation queries the response was YES. Maximal size of possible extension queue 1226. Compared 216063 event pairs, 9207 based on Foata normal form. 1230/23975 useless extension candidates. Maximal degree in co-relation 27140. Up to 14727 conditions per place. [2025-03-09 06:45:54,295 INFO L140 encePairwiseOnDemand]: 68/73 looper letters, 103 selfloop transitions, 3 changer transitions 0/125 dead transitions. [2025-03-09 06:45:54,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 125 transitions, 1049 flow [2025-03-09 06:45:54,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:45:54,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:45:54,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 199 transitions. [2025-03-09 06:45:54,297 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6815068493150684 [2025-03-09 06:45:54,297 INFO L175 Difference]: Start difference. First operand has 81 places, 66 transitions, 375 flow. Second operand 4 states and 199 transitions. [2025-03-09 06:45:54,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 125 transitions, 1049 flow [2025-03-09 06:45:54,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 125 transitions, 1035 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 06:45:54,392 INFO L231 Difference]: Finished difference. Result has 84 places, 68 transitions, 391 flow [2025-03-09 06:45:54,392 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=391, PETRI_PLACES=84, PETRI_TRANSITIONS=68} [2025-03-09 06:45:54,393 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 27 predicate places. [2025-03-09 06:45:54,393 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 68 transitions, 391 flow [2025-03-09 06:45:54,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 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) [2025-03-09 06:45:54,393 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:45:54,393 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:45:54,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2025-03-09 06:45:54,393 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-03-09 06:45:54,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:45:54,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1631004648, now seen corresponding path program 1 times [2025-03-09 06:45:54,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:45:54,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582036568] [2025-03-09 06:45:54,393 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:45:54,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:45:54,399 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-09 06:45:54,403 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 06:45:54,403 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:54,403 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:54,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:45:54,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:45:54,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582036568] [2025-03-09 06:45:54,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582036568] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:45:54,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:45:54,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-09 06:45:54,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000268748] [2025-03-09 06:45:54,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:45:54,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-09 06:45:54,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:45:54,447 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-09 06:45:54,447 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-09 06:45:54,485 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 73 [2025-03-09 06:45:54,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 68 transitions, 391 flow. Second operand has 7 states, 7 states have (on average 30.571428571428573) internal successors, (214), 7 states have internal predecessors, (214), 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) [2025-03-09 06:45:54,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:45:54,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 73 [2025-03-09 06:45:54,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:45:55,923 INFO L124 PetriNetUnfolderBase]: 16754/25448 cut-off events. [2025-03-09 06:45:55,923 INFO L125 PetriNetUnfolderBase]: For 42426/44788 co-relation queries the response was YES. [2025-03-09 06:45:55,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74964 conditions, 25448 events. 16754/25448 cut-off events. For 42426/44788 co-relation queries the response was YES. Maximal size of possible extension queue 1294. Compared 185005 event pairs, 2800 based on Foata normal form. 500/25597 useless extension candidates. Maximal degree in co-relation 74308. Up to 8407 conditions per place. [2025-03-09 06:45:56,047 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 165 selfloop transitions, 26 changer transitions 0/208 dead transitions. [2025-03-09 06:45:56,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 208 transitions, 1393 flow [2025-03-09 06:45:56,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-09 06:45:56,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-09 06:45:56,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 445 transitions. [2025-03-09 06:45:56,048 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6095890410958904 [2025-03-09 06:45:56,048 INFO L175 Difference]: Start difference. First operand has 84 places, 68 transitions, 391 flow. Second operand 10 states and 445 transitions. [2025-03-09 06:45:56,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 208 transitions, 1393 flow [2025-03-09 06:45:56,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 208 transitions, 1377 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:45:56,181 INFO L231 Difference]: Finished difference. Result has 95 places, 79 transitions, 549 flow [2025-03-09 06:45:56,181 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=549, PETRI_PLACES=95, PETRI_TRANSITIONS=79} [2025-03-09 06:45:56,181 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 38 predicate places. [2025-03-09 06:45:56,181 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 79 transitions, 549 flow [2025-03-09 06:45:56,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 30.571428571428573) internal successors, (214), 7 states have internal predecessors, (214), 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) [2025-03-09 06:45:56,181 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:45:56,181 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:45:56,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2025-03-09 06:45:56,182 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-03-09 06:45:56,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:45:56,182 INFO L85 PathProgramCache]: Analyzing trace with hash -938241650, now seen corresponding path program 1 times [2025-03-09 06:45:56,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:45:56,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386651154] [2025-03-09 06:45:56,182 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:45:56,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:45:56,185 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-09 06:45:56,187 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 06:45:56,187 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:56,187 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:56,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:45:56,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:45:56,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386651154] [2025-03-09 06:45:56,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386651154] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:45:56,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:45:56,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-09 06:45:56,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614992704] [2025-03-09 06:45:56,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:45:56,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-09 06:45:56,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:45:56,220 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-09 06:45:56,220 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-09 06:45:56,256 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 73 [2025-03-09 06:45:56,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 79 transitions, 549 flow. Second operand has 7 states, 7 states have (on average 30.571428571428573) internal successors, (214), 7 states have internal predecessors, (214), 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) [2025-03-09 06:45:56,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:45:56,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 73 [2025-03-09 06:45:56,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:45:57,642 INFO L124 PetriNetUnfolderBase]: 17543/26958 cut-off events. [2025-03-09 06:45:57,642 INFO L125 PetriNetUnfolderBase]: For 61339/63749 co-relation queries the response was YES. [2025-03-09 06:45:57,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83296 conditions, 26958 events. 17543/26958 cut-off events. For 61339/63749 co-relation queries the response was YES. Maximal size of possible extension queue 1385. Compared 201095 event pairs, 3028 based on Foata normal form. 342/27063 useless extension candidates. Maximal degree in co-relation 63392. Up to 9478 conditions per place. [2025-03-09 06:45:57,769 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 168 selfloop transitions, 31 changer transitions 0/216 dead transitions. [2025-03-09 06:45:57,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 216 transitions, 1566 flow [2025-03-09 06:45:57,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-09 06:45:57,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-09 06:45:57,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 444 transitions. [2025-03-09 06:45:57,770 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6082191780821918 [2025-03-09 06:45:57,770 INFO L175 Difference]: Start difference. First operand has 95 places, 79 transitions, 549 flow. Second operand 10 states and 444 transitions. [2025-03-09 06:45:57,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 216 transitions, 1566 flow [2025-03-09 06:45:58,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 216 transitions, 1501 flow, removed 10 selfloop flow, removed 5 redundant places. [2025-03-09 06:45:58,320 INFO L231 Difference]: Finished difference. Result has 102 places, 89 transitions, 667 flow [2025-03-09 06:45:58,320 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=667, PETRI_PLACES=102, PETRI_TRANSITIONS=89} [2025-03-09 06:45:58,320 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 45 predicate places. [2025-03-09 06:45:58,320 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 89 transitions, 667 flow [2025-03-09 06:45:58,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 30.571428571428573) internal successors, (214), 7 states have internal predecessors, (214), 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) [2025-03-09 06:45:58,321 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:45:58,321 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:45:58,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2025-03-09 06:45:58,321 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-03-09 06:45:58,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:45:58,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1609675694, now seen corresponding path program 1 times [2025-03-09 06:45:58,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:45:58,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325511154] [2025-03-09 06:45:58,321 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:45:58,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:45:58,324 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-09 06:45:58,325 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 06:45:58,325 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:58,325 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:58,352 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-09 06:45:58,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:45:58,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325511154] [2025-03-09 06:45:58,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325511154] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:45:58,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:45:58,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 06:45:58,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398719533] [2025-03-09 06:45:58,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:45:58,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:45:58,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:45:58,352 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:45:58,353 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:45:58,372 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 73 [2025-03-09 06:45:58,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 89 transitions, 667 flow. Second operand has 5 states, 5 states have (on average 32.4) internal successors, (162), 5 states have internal predecessors, (162), 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) [2025-03-09 06:45:58,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:45:58,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 73 [2025-03-09 06:45:58,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:45:59,582 INFO L124 PetriNetUnfolderBase]: 14009/25350 cut-off events. [2025-03-09 06:45:59,582 INFO L125 PetriNetUnfolderBase]: For 66554/67420 co-relation queries the response was YES. [2025-03-09 06:45:59,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76036 conditions, 25350 events. 14009/25350 cut-off events. For 66554/67420 co-relation queries the response was YES. Maximal size of possible extension queue 1352. Compared 233620 event pairs, 8715 based on Foata normal form. 184/24095 useless extension candidates. Maximal degree in co-relation 62953. Up to 19742 conditions per place. [2025-03-09 06:45:59,708 INFO L140 encePairwiseOnDemand]: 69/73 looper letters, 76 selfloop transitions, 4 changer transitions 0/109 dead transitions. [2025-03-09 06:45:59,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 109 transitions, 994 flow [2025-03-09 06:45:59,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 06:45:59,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 06:45:59,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 192 transitions. [2025-03-09 06:45:59,709 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5260273972602739 [2025-03-09 06:45:59,709 INFO L175 Difference]: Start difference. First operand has 102 places, 89 transitions, 667 flow. Second operand 5 states and 192 transitions. [2025-03-09 06:45:59,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 109 transitions, 994 flow [2025-03-09 06:46:00,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 109 transitions, 915 flow, removed 13 selfloop flow, removed 5 redundant places. [2025-03-09 06:46:00,187 INFO L231 Difference]: Finished difference. Result has 101 places, 88 transitions, 606 flow [2025-03-09 06:46:00,188 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=606, PETRI_PLACES=101, PETRI_TRANSITIONS=88} [2025-03-09 06:46:00,188 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 44 predicate places. [2025-03-09 06:46:00,188 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 88 transitions, 606 flow [2025-03-09 06:46:00,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.4) internal successors, (162), 5 states have internal predecessors, (162), 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) [2025-03-09 06:46:00,188 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:46:00,188 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:46:00,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2025-03-09 06:46:00,188 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-03-09 06:46:00,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:46:00,188 INFO L85 PathProgramCache]: Analyzing trace with hash 2049727765, now seen corresponding path program 1 times [2025-03-09 06:46:00,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:46:00,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573535256] [2025-03-09 06:46:00,189 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:46:00,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:46:00,191 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-09 06:46:00,193 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-09 06:46:00,193 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:46:00,193 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:46:00,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:46:00,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:46:00,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573535256] [2025-03-09 06:46:00,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573535256] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:46:00,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:46:00,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-09 06:46:00,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446792100] [2025-03-09 06:46:00,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:46:00,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-09 06:46:00,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:46:00,224 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-09 06:46:00,224 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-09 06:46:00,256 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 73 [2025-03-09 06:46:00,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 88 transitions, 606 flow. Second operand has 7 states, 7 states have (on average 30.714285714285715) internal successors, (215), 7 states have internal predecessors, (215), 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) [2025-03-09 06:46:00,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:46:00,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 73 [2025-03-09 06:46:00,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:46:01,955 INFO L124 PetriNetUnfolderBase]: 17023/26080 cut-off events. [2025-03-09 06:46:01,955 INFO L125 PetriNetUnfolderBase]: For 63291/65834 co-relation queries the response was YES. [2025-03-09 06:46:02,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81255 conditions, 26080 events. 17023/26080 cut-off events. For 63291/65834 co-relation queries the response was YES. Maximal size of possible extension queue 1356. Compared 194491 event pairs, 3044 based on Foata normal form. 406/26281 useless extension candidates. Maximal degree in co-relation 81086. Up to 7325 conditions per place. [2025-03-09 06:46:02,109 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 203 selfloop transitions, 29 changer transitions 0/249 dead transitions. [2025-03-09 06:46:02,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 249 transitions, 1783 flow [2025-03-09 06:46:02,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-09 06:46:02,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-09 06:46:02,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 531 transitions. [2025-03-09 06:46:02,110 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6061643835616438 [2025-03-09 06:46:02,110 INFO L175 Difference]: Start difference. First operand has 101 places, 88 transitions, 606 flow. Second operand 12 states and 531 transitions. [2025-03-09 06:46:02,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 249 transitions, 1783 flow [2025-03-09 06:46:02,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 249 transitions, 1757 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-09 06:46:02,609 INFO L231 Difference]: Finished difference. Result has 108 places, 93 transitions, 711 flow [2025-03-09 06:46:02,610 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=584, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=711, PETRI_PLACES=108, PETRI_TRANSITIONS=93} [2025-03-09 06:46:02,610 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 51 predicate places. [2025-03-09 06:46:02,610 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 93 transitions, 711 flow [2025-03-09 06:46:02,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 30.714285714285715) internal successors, (215), 7 states have internal predecessors, (215), 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) [2025-03-09 06:46:02,610 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:46:02,610 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:46:02,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2025-03-09 06:46:02,610 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-03-09 06:46:02,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:46:02,611 INFO L85 PathProgramCache]: Analyzing trace with hash -681761441, now seen corresponding path program 1 times [2025-03-09 06:46:02,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:46:02,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969349521] [2025-03-09 06:46:02,611 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:46:02,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:46:02,614 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-09 06:46:02,616 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-09 06:46:02,616 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:46:02,616 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:46:02,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:46:02,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:46:02,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969349521] [2025-03-09 06:46:02,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969349521] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:46:02,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:46:02,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:46:02,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355411634] [2025-03-09 06:46:02,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:46:02,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:46:02,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:46:02,645 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:46:02,645 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:46:02,663 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2025-03-09 06:46:02,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 93 transitions, 711 flow. Second operand has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 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) [2025-03-09 06:46:02,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:46:02,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2025-03-09 06:46:02,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:46:04,527 INFO L124 PetriNetUnfolderBase]: 22450/36092 cut-off events. [2025-03-09 06:46:04,527 INFO L125 PetriNetUnfolderBase]: For 89341/92498 co-relation queries the response was YES. [2025-03-09 06:46:04,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109241 conditions, 36092 events. 22450/36092 cut-off events. For 89341/92498 co-relation queries the response was YES. Maximal size of possible extension queue 1976. Compared 303016 event pairs, 4894 based on Foata normal form. 741/36527 useless extension candidates. Maximal degree in co-relation 88938. Up to 13479 conditions per place. [2025-03-09 06:46:04,712 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 119 selfloop transitions, 28 changer transitions 0/177 dead transitions. [2025-03-09 06:46:04,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 177 transitions, 1548 flow [2025-03-09 06:46:04,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:46:04,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:46:04,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 269 transitions. [2025-03-09 06:46:04,713 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6141552511415526 [2025-03-09 06:46:04,713 INFO L175 Difference]: Start difference. First operand has 108 places, 93 transitions, 711 flow. Second operand 6 states and 269 transitions. [2025-03-09 06:46:04,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 177 transitions, 1548 flow [2025-03-09 06:46:05,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 177 transitions, 1460 flow, removed 12 selfloop flow, removed 6 redundant places. [2025-03-09 06:46:05,403 INFO L231 Difference]: Finished difference. Result has 111 places, 113 transitions, 980 flow [2025-03-09 06:46:05,403 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=652, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=980, PETRI_PLACES=111, PETRI_TRANSITIONS=113} [2025-03-09 06:46:05,403 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 54 predicate places. [2025-03-09 06:46:05,403 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 113 transitions, 980 flow [2025-03-09 06:46:05,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 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) [2025-03-09 06:46:05,403 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:46:05,403 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:46:05,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2025-03-09 06:46:05,404 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-03-09 06:46:05,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:46:05,404 INFO L85 PathProgramCache]: Analyzing trace with hash 979280227, now seen corresponding path program 1 times [2025-03-09 06:46:05,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:46:05,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697550344] [2025-03-09 06:46:05,404 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:46:05,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:46:05,407 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-09 06:46:05,408 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-09 06:46:05,408 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:46:05,408 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:46:05,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:46:05,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:46:05,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697550344] [2025-03-09 06:46:05,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697550344] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:46:05,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:46:05,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-09 06:46:05,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703378781] [2025-03-09 06:46:05,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:46:05,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-09 06:46:05,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:46:05,451 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-09 06:46:05,451 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-09 06:46:05,488 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 73 [2025-03-09 06:46:05,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 113 transitions, 980 flow. Second operand has 7 states, 7 states have (on average 30.571428571428573) internal successors, (214), 7 states have internal predecessors, (214), 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) [2025-03-09 06:46:05,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:46:05,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 73 [2025-03-09 06:46:05,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:46:07,508 INFO L124 PetriNetUnfolderBase]: 22670/36163 cut-off events. [2025-03-09 06:46:07,508 INFO L125 PetriNetUnfolderBase]: For 98776/102582 co-relation queries the response was YES. [2025-03-09 06:46:07,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115341 conditions, 36163 events. 22670/36163 cut-off events. For 98776/102582 co-relation queries the response was YES. Maximal size of possible extension queue 1958. Compared 300113 event pairs, 4330 based on Foata normal form. 794/36705 useless extension candidates. Maximal degree in co-relation 115164. Up to 9984 conditions per place. [2025-03-09 06:46:07,703 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 214 selfloop transitions, 39 changer transitions 0/271 dead transitions. [2025-03-09 06:46:07,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 271 transitions, 2207 flow [2025-03-09 06:46:07,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-09 06:46:07,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-09 06:46:07,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 531 transitions. [2025-03-09 06:46:07,704 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6061643835616438 [2025-03-09 06:46:07,704 INFO L175 Difference]: Start difference. First operand has 111 places, 113 transitions, 980 flow. Second operand 12 states and 531 transitions. [2025-03-09 06:46:07,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 271 transitions, 2207 flow [2025-03-09 06:46:08,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 271 transitions, 2206 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:46:08,395 INFO L231 Difference]: Finished difference. Result has 121 places, 116 transitions, 1112 flow [2025-03-09 06:46:08,396 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=965, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1112, PETRI_PLACES=121, PETRI_TRANSITIONS=116} [2025-03-09 06:46:08,396 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 64 predicate places. [2025-03-09 06:46:08,396 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 116 transitions, 1112 flow [2025-03-09 06:46:08,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 30.571428571428573) internal successors, (214), 7 states have internal predecessors, (214), 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) [2025-03-09 06:46:08,396 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:46:08,396 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:46:08,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2025-03-09 06:46:08,396 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-03-09 06:46:08,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:46:08,396 INFO L85 PathProgramCache]: Analyzing trace with hash 340223356, now seen corresponding path program 1 times [2025-03-09 06:46:08,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:46:08,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161037780] [2025-03-09 06:46:08,397 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:46:08,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:46:08,399 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-09 06:46:08,400 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-09 06:46:08,400 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:46:08,400 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:46:08,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:46:08,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:46:08,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161037780] [2025-03-09 06:46:08,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161037780] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:46:08,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:46:08,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:46:08,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604690463] [2025-03-09 06:46:08,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:46:08,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:46:08,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:46:08,414 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:46:08,414 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:46:08,427 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 73 [2025-03-09 06:46:08,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 116 transitions, 1112 flow. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:46:08,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:46:08,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 73 [2025-03-09 06:46:08,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:46:10,272 INFO L124 PetriNetUnfolderBase]: 18857/34453 cut-off events. [2025-03-09 06:46:10,272 INFO L125 PetriNetUnfolderBase]: For 118930/123497 co-relation queries the response was YES. [2025-03-09 06:46:10,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103053 conditions, 34453 events. 18857/34453 cut-off events. For 118930/123497 co-relation queries the response was YES. Maximal size of possible extension queue 1836. Compared 335511 event pairs, 4963 based on Foata normal form. 1698/35580 useless extension candidates. Maximal degree in co-relation 87554. Up to 24081 conditions per place. [2025-03-09 06:46:10,453 INFO L140 encePairwiseOnDemand]: 68/73 looper letters, 145 selfloop transitions, 6 changer transitions 0/181 dead transitions. [2025-03-09 06:46:10,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 181 transitions, 2221 flow [2025-03-09 06:46:10,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:46:10,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:46:10,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 156 transitions. [2025-03-09 06:46:10,454 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5342465753424658 [2025-03-09 06:46:10,454 INFO L175 Difference]: Start difference. First operand has 121 places, 116 transitions, 1112 flow. Second operand 4 states and 156 transitions. [2025-03-09 06:46:10,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 181 transitions, 2221 flow [2025-03-09 06:46:10,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 181 transitions, 2071 flow, removed 22 selfloop flow, removed 9 redundant places. [2025-03-09 06:46:10,694 INFO L231 Difference]: Finished difference. Result has 115 places, 116 transitions, 1044 flow [2025-03-09 06:46:10,694 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1022, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1044, PETRI_PLACES=115, PETRI_TRANSITIONS=116} [2025-03-09 06:46:10,694 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 58 predicate places. [2025-03-09 06:46:10,694 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 116 transitions, 1044 flow [2025-03-09 06:46:10,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:46:10,695 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:46:10,695 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:46:10,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2025-03-09 06:46:10,695 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-03-09 06:46:10,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:46:10,695 INFO L85 PathProgramCache]: Analyzing trace with hash 340232107, now seen corresponding path program 1 times [2025-03-09 06:46:10,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:46:10,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761796133] [2025-03-09 06:46:10,695 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:46:10,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:46:10,698 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-09 06:46:10,699 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-09 06:46:10,699 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:46:10,699 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:46:10,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:46:10,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:46:10,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761796133] [2025-03-09 06:46:10,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761796133] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:46:10,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:46:10,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:46:10,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292500629] [2025-03-09 06:46:10,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:46:10,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:46:10,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:46:10,718 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:46:10,718 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:46:10,736 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2025-03-09 06:46:10,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 116 transitions, 1044 flow. Second operand has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 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) [2025-03-09 06:46:10,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:46:10,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2025-03-09 06:46:10,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:46:12,593 INFO L124 PetriNetUnfolderBase]: 21098/34335 cut-off events. [2025-03-09 06:46:12,594 INFO L125 PetriNetUnfolderBase]: For 96356/98537 co-relation queries the response was YES. [2025-03-09 06:46:12,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111302 conditions, 34335 events. 21098/34335 cut-off events. For 96356/98537 co-relation queries the response was YES. Maximal size of possible extension queue 1904. Compared 291996 event pairs, 6946 based on Foata normal form. 703/34695 useless extension candidates. Maximal degree in co-relation 93554. Up to 16379 conditions per place. [2025-03-09 06:46:12,774 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 129 selfloop transitions, 15 changer transitions 0/172 dead transitions. [2025-03-09 06:46:12,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 172 transitions, 1658 flow [2025-03-09 06:46:12,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:46:12,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:46:12,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 264 transitions. [2025-03-09 06:46:12,775 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6027397260273972 [2025-03-09 06:46:12,775 INFO L175 Difference]: Start difference. First operand has 115 places, 116 transitions, 1044 flow. Second operand 6 states and 264 transitions. [2025-03-09 06:46:12,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 172 transitions, 1658 flow [2025-03-09 06:46:13,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 172 transitions, 1637 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-09 06:46:13,461 INFO L231 Difference]: Finished difference. Result has 117 places, 115 transitions, 1057 flow [2025-03-09 06:46:13,461 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1027, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1057, PETRI_PLACES=117, PETRI_TRANSITIONS=115} [2025-03-09 06:46:13,461 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 60 predicate places. [2025-03-09 06:46:13,461 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 115 transitions, 1057 flow [2025-03-09 06:46:13,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 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) [2025-03-09 06:46:13,461 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:46:13,461 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:46:13,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2025-03-09 06:46:13,462 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-03-09 06:46:13,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:46:13,462 INFO L85 PathProgramCache]: Analyzing trace with hash 537141350, now seen corresponding path program 1 times [2025-03-09 06:46:13,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:46:13,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588060988] [2025-03-09 06:46:13,462 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:46:13,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:46:13,465 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-09 06:46:13,467 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-09 06:46:13,467 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:46:13,467 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:46:13,467 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 06:46:13,468 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-09 06:46:13,470 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-09 06:46:13,470 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:46:13,470 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:46:13,472 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-09 06:46:13,472 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-09 06:46:13,472 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (27 of 28 remaining) [2025-03-09 06:46:13,472 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 28 remaining) [2025-03-09 06:46:13,472 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 28 remaining) [2025-03-09 06:46:13,472 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 28 remaining) [2025-03-09 06:46:13,472 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 28 remaining) [2025-03-09 06:46:13,472 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 28 remaining) [2025-03-09 06:46:13,473 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 28 remaining) [2025-03-09 06:46:13,473 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 28 remaining) [2025-03-09 06:46:13,473 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 28 remaining) [2025-03-09 06:46:13,473 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 28 remaining) [2025-03-09 06:46:13,473 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 28 remaining) [2025-03-09 06:46:13,473 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 28 remaining) [2025-03-09 06:46:13,473 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 28 remaining) [2025-03-09 06:46:13,473 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 28 remaining) [2025-03-09 06:46:13,473 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 28 remaining) [2025-03-09 06:46:13,473 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 28 remaining) [2025-03-09 06:46:13,473 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 28 remaining) [2025-03-09 06:46:13,473 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 28 remaining) [2025-03-09 06:46:13,473 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 28 remaining) [2025-03-09 06:46:13,473 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 28 remaining) [2025-03-09 06:46:13,473 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 28 remaining) [2025-03-09 06:46:13,473 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 28 remaining) [2025-03-09 06:46:13,473 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 28 remaining) [2025-03-09 06:46:13,473 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 28 remaining) [2025-03-09 06:46:13,473 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 28 remaining) [2025-03-09 06:46:13,473 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 28 remaining) [2025-03-09 06:46:13,473 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 28 remaining) [2025-03-09 06:46:13,473 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 28 remaining) [2025-03-09 06:46:13,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2025-03-09 06:46:13,473 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:46:13,473 WARN L246 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-09 06:46:13,473 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2025-03-09 06:46:13,502 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-09 06:46:13,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 93 transitions, 242 flow [2025-03-09 06:46:13,509 INFO L124 PetriNetUnfolderBase]: 5/131 cut-off events. [2025-03-09 06:46:13,509 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2025-03-09 06:46:13,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164 conditions, 131 events. 5/131 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 487 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 155. Up to 10 conditions per place. [2025-03-09 06:46:13,509 INFO L82 GeneralOperation]: Start removeDead. Operand has 107 places, 93 transitions, 242 flow [2025-03-09 06:46:13,510 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 56 transitions, 143 flow [2025-03-09 06:46:13,510 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 06:46:13,510 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;@6faa00f4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 06:46:13,510 INFO L334 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2025-03-09 06:46:13,511 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 06:46:13,511 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2025-03-09 06:46:13,511 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 06:46:13,511 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:46:13,511 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:46:13,511 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 31 more)] === [2025-03-09 06:46:13,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:46:13,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1811079534, now seen corresponding path program 1 times [2025-03-09 06:46:13,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:46:13,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221175394] [2025-03-09 06:46:13,512 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:46:13,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:46:13,514 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 06:46:13,515 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 06:46:13,515 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:46:13,515 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:46:13,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:46:13,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:46:13,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221175394] [2025-03-09 06:46:13,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221175394] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:46:13,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:46:13,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:46:13,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039019620] [2025-03-09 06:46:13,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:46:13,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:46:13,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:46:13,531 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:46:13,531 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:46:13,551 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 93 [2025-03-09 06:46:13,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 56 transitions, 143 flow. Second operand has 5 states, 5 states have (on average 41.2) internal successors, (206), 5 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) [2025-03-09 06:46:13,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:46:13,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 93 [2025-03-09 06:46:13,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:46:15,584 INFO L124 PetriNetUnfolderBase]: 39926/54546 cut-off events. [2025-03-09 06:46:15,584 INFO L125 PetriNetUnfolderBase]: For 2575/2575 co-relation queries the response was YES. [2025-03-09 06:46:15,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109765 conditions, 54546 events. 39926/54546 cut-off events. For 2575/2575 co-relation queries the response was YES. Maximal size of possible extension queue 2281. Compared 349411 event pairs, 7002 based on Foata normal form. 2958/54383 useless extension candidates. Maximal degree in co-relation 49657. Up to 21801 conditions per place. [2025-03-09 06:46:15,824 INFO L140 encePairwiseOnDemand]: 83/93 looper letters, 91 selfloop transitions, 11 changer transitions 0/126 dead transitions. [2025-03-09 06:46:15,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 126 transitions, 549 flow [2025-03-09 06:46:15,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:46:15,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:46:15,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 348 transitions. [2025-03-09 06:46:15,825 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6236559139784946 [2025-03-09 06:46:15,825 INFO L175 Difference]: Start difference. First operand has 67 places, 56 transitions, 143 flow. Second operand 6 states and 348 transitions. [2025-03-09 06:46:15,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 126 transitions, 549 flow [2025-03-09 06:46:15,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 126 transitions, 521 flow, removed 12 selfloop flow, removed 1 redundant places. [2025-03-09 06:46:15,828 INFO L231 Difference]: Finished difference. Result has 74 places, 64 transitions, 217 flow [2025-03-09 06:46:15,828 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=217, PETRI_PLACES=74, PETRI_TRANSITIONS=64} [2025-03-09 06:46:15,828 INFO L279 CegarLoopForPetriNet]: 67 programPoint places, 7 predicate places. [2025-03-09 06:46:15,828 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 64 transitions, 217 flow [2025-03-09 06:46:15,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.2) internal successors, (206), 5 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) [2025-03-09 06:46:15,828 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:46:15,828 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:46:15,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2025-03-09 06:46:15,829 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 31 more)] === [2025-03-09 06:46:15,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:46:15,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1811079477, now seen corresponding path program 1 times [2025-03-09 06:46:15,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:46:15,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699417298] [2025-03-09 06:46:15,829 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:46:15,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:46:15,831 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 06:46:15,832 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 06:46:15,832 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:46:15,832 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:46:15,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:46:15,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:46:15,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699417298] [2025-03-09 06:46:15,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699417298] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:46:15,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:46:15,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:46:15,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801230249] [2025-03-09 06:46:15,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:46:15,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:46:15,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:46:15,839 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:46:15,839 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 06:46:15,841 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 93 [2025-03-09 06:46:15,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 64 transitions, 217 flow. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:46:15,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:46:15,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 93 [2025-03-09 06:46:15,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:46:17,816 INFO L124 PetriNetUnfolderBase]: 31609/53521 cut-off events. [2025-03-09 06:46:17,816 INFO L125 PetriNetUnfolderBase]: For 26627/28583 co-relation queries the response was YES. [2025-03-09 06:46:17,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117775 conditions, 53521 events. 31609/53521 cut-off events. For 26627/28583 co-relation queries the response was YES. Maximal size of possible extension queue 2618. Compared 495098 event pairs, 25123 based on Foata normal form. 796/46947 useless extension candidates. Maximal degree in co-relation 65511. Up to 42282 conditions per place. [2025-03-09 06:46:18,042 INFO L140 encePairwiseOnDemand]: 88/93 looper letters, 43 selfloop transitions, 3 changer transitions 0/71 dead transitions. [2025-03-09 06:46:18,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 71 transitions, 329 flow [2025-03-09 06:46:18,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:46:18,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:46:18,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 181 transitions. [2025-03-09 06:46:18,042 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6487455197132617 [2025-03-09 06:46:18,042 INFO L175 Difference]: Start difference. First operand has 74 places, 64 transitions, 217 flow. Second operand 3 states and 181 transitions. [2025-03-09 06:46:18,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 71 transitions, 329 flow [2025-03-09 06:46:18,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 71 transitions, 328 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:46:18,062 INFO L231 Difference]: Finished difference. Result has 76 places, 66 transitions, 237 flow [2025-03-09 06:46:18,062 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=237, PETRI_PLACES=76, PETRI_TRANSITIONS=66} [2025-03-09 06:46:18,063 INFO L279 CegarLoopForPetriNet]: 67 programPoint places, 9 predicate places. [2025-03-09 06:46:18,063 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 66 transitions, 237 flow [2025-03-09 06:46:18,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:46:18,063 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:46:18,063 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:46:18,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2025-03-09 06:46:18,063 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 31 more)] === [2025-03-09 06:46:18,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:46:18,063 INFO L85 PathProgramCache]: Analyzing trace with hash 308891090, now seen corresponding path program 1 times [2025-03-09 06:46:18,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:46:18,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013712324] [2025-03-09 06:46:18,063 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:46:18,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:46:18,065 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 06:46:18,066 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 06:46:18,066 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:46:18,066 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:46:18,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:46:18,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:46:18,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013712324] [2025-03-09 06:46:18,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013712324] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:46:18,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:46:18,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:46:18,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119657460] [2025-03-09 06:46:18,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:46:18,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:46:18,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:46:18,083 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:46:18,083 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:46:18,103 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 93 [2025-03-09 06:46:18,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 66 transitions, 237 flow. Second operand has 5 states, 5 states have (on average 41.2) internal successors, (206), 5 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) [2025-03-09 06:46:18,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:46:18,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 93 [2025-03-09 06:46:18,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:46:19,776 INFO L124 PetriNetUnfolderBase]: 32732/44927 cut-off events. [2025-03-09 06:46:19,776 INFO L125 PetriNetUnfolderBase]: For 26306/28293 co-relation queries the response was YES. [2025-03-09 06:46:19,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113440 conditions, 44927 events. 32732/44927 cut-off events. For 26306/28293 co-relation queries the response was YES. Maximal size of possible extension queue 1928. Compared 285494 event pairs, 8114 based on Foata normal form. 1441/45770 useless extension candidates. Maximal degree in co-relation 113289. Up to 23569 conditions per place. [2025-03-09 06:46:19,996 INFO L140 encePairwiseOnDemand]: 84/93 looper letters, 90 selfloop transitions, 10 changer transitions 0/124 dead transitions. [2025-03-09 06:46:19,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 124 transitions, 641 flow [2025-03-09 06:46:19,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:46:19,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:46:19,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 339 transitions. [2025-03-09 06:46:19,997 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6075268817204301 [2025-03-09 06:46:19,997 INFO L175 Difference]: Start difference. First operand has 76 places, 66 transitions, 237 flow. Second operand 6 states and 339 transitions. [2025-03-09 06:46:19,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 124 transitions, 641 flow [2025-03-09 06:46:20,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 124 transitions, 630 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 06:46:20,005 INFO L231 Difference]: Finished difference. Result has 79 places, 68 transitions, 277 flow [2025-03-09 06:46:20,005 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=277, PETRI_PLACES=79, PETRI_TRANSITIONS=68} [2025-03-09 06:46:20,005 INFO L279 CegarLoopForPetriNet]: 67 programPoint places, 12 predicate places. [2025-03-09 06:46:20,006 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 68 transitions, 277 flow [2025-03-09 06:46:20,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.2) internal successors, (206), 5 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) [2025-03-09 06:46:20,006 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:46:20,006 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:46:20,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2025-03-09 06:46:20,006 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 31 more)] === [2025-03-09 06:46:20,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:46:20,006 INFO L85 PathProgramCache]: Analyzing trace with hash 309726262, now seen corresponding path program 1 times [2025-03-09 06:46:20,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:46:20,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976543246] [2025-03-09 06:46:20,006 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:46:20,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:46:20,009 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 06:46:20,009 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 06:46:20,009 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:46:20,009 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:46:20,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:46:20,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:46:20,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976543246] [2025-03-09 06:46:20,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976543246] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:46:20,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:46:20,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:46:20,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363011901] [2025-03-09 06:46:20,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:46:20,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:46:20,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:46:20,022 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:46:20,022 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:46:20,041 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 93 [2025-03-09 06:46:20,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 68 transitions, 277 flow. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 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) [2025-03-09 06:46:20,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:46:20,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 93 [2025-03-09 06:46:20,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:46:22,127 INFO L124 PetriNetUnfolderBase]: 31604/53467 cut-off events. [2025-03-09 06:46:22,127 INFO L125 PetriNetUnfolderBase]: For 39507/41463 co-relation queries the response was YES. [2025-03-09 06:46:22,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124950 conditions, 53467 events. 31604/53467 cut-off events. For 39507/41463 co-relation queries the response was YES. Maximal size of possible extension queue 2538. Compared 491301 event pairs, 25120 based on Foata normal form. 793/47538 useless extension candidates. Maximal degree in co-relation 57561. Up to 42267 conditions per place. [2025-03-09 06:46:22,362 INFO L140 encePairwiseOnDemand]: 89/93 looper letters, 46 selfloop transitions, 3 changer transitions 0/72 dead transitions. [2025-03-09 06:46:22,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 72 transitions, 393 flow [2025-03-09 06:46:22,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:46:22,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:46:22,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 194 transitions. [2025-03-09 06:46:22,363 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.521505376344086 [2025-03-09 06:46:22,363 INFO L175 Difference]: Start difference. First operand has 79 places, 68 transitions, 277 flow. Second operand 4 states and 194 transitions. [2025-03-09 06:46:22,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 72 transitions, 393 flow [2025-03-09 06:46:22,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 72 transitions, 382 flow, removed 2 selfloop flow, removed 2 redundant places. [2025-03-09 06:46:22,384 INFO L231 Difference]: Finished difference. Result has 80 places, 67 transitions, 271 flow [2025-03-09 06:46:22,384 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=271, PETRI_PLACES=80, PETRI_TRANSITIONS=67} [2025-03-09 06:46:22,384 INFO L279 CegarLoopForPetriNet]: 67 programPoint places, 13 predicate places. [2025-03-09 06:46:22,384 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 67 transitions, 271 flow [2025-03-09 06:46:22,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 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) [2025-03-09 06:46:22,385 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:46:22,385 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:46:22,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2025-03-09 06:46:22,385 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 31 more)] === [2025-03-09 06:46:22,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:46:22,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1673638190, now seen corresponding path program 1 times [2025-03-09 06:46:22,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:46:22,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497443272] [2025-03-09 06:46:22,385 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:46:22,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:46:22,388 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-09 06:46:22,389 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-09 06:46:22,389 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:46:22,389 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:46:22,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:46:22,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:46:22,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497443272] [2025-03-09 06:46:22,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497443272] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:46:22,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:46:22,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:46:22,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390512346] [2025-03-09 06:46:22,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:46:22,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:46:22,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:46:22,401 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:46:22,401 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:46:22,405 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 93 [2025-03-09 06:46:22,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 67 transitions, 271 flow. Second operand has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:46:22,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:46:22,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 93 [2025-03-09 06:46:22,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:46:24,704 INFO L124 PetriNetUnfolderBase]: 30035/49448 cut-off events. [2025-03-09 06:46:24,704 INFO L125 PetriNetUnfolderBase]: For 37850/40334 co-relation queries the response was YES. [2025-03-09 06:46:24,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115677 conditions, 49448 events. 30035/49448 cut-off events. For 37850/40334 co-relation queries the response was YES. Maximal size of possible extension queue 2265. Compared 440962 event pairs, 9700 based on Foata normal form. 1592/45811 useless extension candidates. Maximal degree in co-relation 53657. Up to 27595 conditions per place. [2025-03-09 06:46:25,019 INFO L140 encePairwiseOnDemand]: 89/93 looper letters, 69 selfloop transitions, 3 changer transitions 0/95 dead transitions. [2025-03-09 06:46:25,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 95 transitions, 560 flow [2025-03-09 06:46:25,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:46:25,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:46:25,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 237 transitions. [2025-03-09 06:46:25,020 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6370967741935484 [2025-03-09 06:46:25,020 INFO L175 Difference]: Start difference. First operand has 80 places, 67 transitions, 271 flow. Second operand 4 states and 237 transitions. [2025-03-09 06:46:25,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 95 transitions, 560 flow [2025-03-09 06:46:25,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 95 transitions, 554 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-09 06:46:25,048 INFO L231 Difference]: Finished difference. Result has 79 places, 66 transitions, 267 flow [2025-03-09 06:46:25,048 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=267, PETRI_PLACES=79, PETRI_TRANSITIONS=66} [2025-03-09 06:46:25,049 INFO L279 CegarLoopForPetriNet]: 67 programPoint places, 12 predicate places. [2025-03-09 06:46:25,049 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 66 transitions, 267 flow [2025-03-09 06:46:25,049 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:46:25,049 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:46:25,049 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:46:25,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2025-03-09 06:46:25,049 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 31 more)] === [2025-03-09 06:46:25,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:46:25,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1673637909, now seen corresponding path program 1 times [2025-03-09 06:46:25,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:46:25,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273037791] [2025-03-09 06:46:25,049 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:46:25,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:46:25,052 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-09 06:46:25,054 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-09 06:46:25,054 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:46:25,054 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:46:25,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:46:25,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:46:25,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273037791] [2025-03-09 06:46:25,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273037791] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:46:25,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:46:25,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:46:25,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140041097] [2025-03-09 06:46:25,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:46:25,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:46:25,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:46:25,073 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:46:25,074 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:46:25,101 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 93 [2025-03-09 06:46:25,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 66 transitions, 267 flow. Second operand has 5 states, 5 states have (on average 41.8) internal successors, (209), 5 states have internal predecessors, (209), 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) [2025-03-09 06:46:25,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:46:25,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 93 [2025-03-09 06:46:25,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:46:29,167 INFO L124 PetriNetUnfolderBase]: 66192/92573 cut-off events. [2025-03-09 06:46:29,167 INFO L125 PetriNetUnfolderBase]: For 62710/65380 co-relation queries the response was YES. [2025-03-09 06:46:29,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234226 conditions, 92573 events. 66192/92573 cut-off events. For 62710/65380 co-relation queries the response was YES. Maximal size of possible extension queue 4129. Compared 666205 event pairs, 14835 based on Foata normal form. 2587/93251 useless extension candidates. Maximal degree in co-relation 122394. Up to 38068 conditions per place. [2025-03-09 06:46:29,592 INFO L140 encePairwiseOnDemand]: 84/93 looper letters, 98 selfloop transitions, 20 changer transitions 0/141 dead transitions. [2025-03-09 06:46:29,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 141 transitions, 805 flow [2025-03-09 06:46:29,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:46:29,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:46:29,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 340 transitions. [2025-03-09 06:46:29,593 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6093189964157706 [2025-03-09 06:46:29,593 INFO L175 Difference]: Start difference. First operand has 79 places, 66 transitions, 267 flow. Second operand 6 states and 340 transitions. [2025-03-09 06:46:29,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 141 transitions, 805 flow [2025-03-09 06:46:29,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 141 transitions, 797 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 06:46:29,665 INFO L231 Difference]: Finished difference. Result has 86 places, 79 transitions, 439 flow [2025-03-09 06:46:29,665 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=439, PETRI_PLACES=86, PETRI_TRANSITIONS=79} [2025-03-09 06:46:29,665 INFO L279 CegarLoopForPetriNet]: 67 programPoint places, 19 predicate places. [2025-03-09 06:46:29,665 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 79 transitions, 439 flow [2025-03-09 06:46:29,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.8) internal successors, (209), 5 states have internal predecessors, (209), 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) [2025-03-09 06:46:29,666 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:46:29,666 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:46:29,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2025-03-09 06:46:29,666 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 31 more)] === [2025-03-09 06:46:29,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:46:29,666 INFO L85 PathProgramCache]: Analyzing trace with hash -343175987, now seen corresponding path program 1 times [2025-03-09 06:46:29,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:46:29,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066346408] [2025-03-09 06:46:29,666 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:46:29,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:46:29,668 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-09 06:46:29,669 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 06:46:29,669 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:46:29,670 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:46:29,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:46:29,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:46:29,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066346408] [2025-03-09 06:46:29,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066346408] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:46:29,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:46:29,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:46:29,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899085014] [2025-03-09 06:46:29,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:46:29,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:46:29,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:46:29,684 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:46:29,684 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:46:29,688 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 93 [2025-03-09 06:46:29,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 79 transitions, 439 flow. Second operand has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:46:29,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:46:29,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 93 [2025-03-09 06:46:29,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:46:34,514 INFO L124 PetriNetUnfolderBase]: 58150/93479 cut-off events. [2025-03-09 06:46:34,515 INFO L125 PetriNetUnfolderBase]: For 144637/151551 co-relation queries the response was YES. [2025-03-09 06:46:34,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245921 conditions, 93479 events. 58150/93479 cut-off events. For 144637/151551 co-relation queries the response was YES. Maximal size of possible extension queue 4761. Compared 871285 event pairs, 39991 based on Foata normal form. 3466/86895 useless extension candidates. Maximal degree in co-relation 133847. Up to 77764 conditions per place. [2025-03-09 06:46:35,175 INFO L140 encePairwiseOnDemand]: 89/93 looper letters, 74 selfloop transitions, 4 changer transitions 0/102 dead transitions. [2025-03-09 06:46:35,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 102 transitions, 732 flow [2025-03-09 06:46:35,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:46:35,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:46:35,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 235 transitions. [2025-03-09 06:46:35,176 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6317204301075269 [2025-03-09 06:46:35,176 INFO L175 Difference]: Start difference. First operand has 86 places, 79 transitions, 439 flow. Second operand 4 states and 235 transitions. [2025-03-09 06:46:35,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 102 transitions, 732 flow [2025-03-09 06:46:35,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 102 transitions, 731 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:46:35,305 INFO L231 Difference]: Finished difference. Result has 89 places, 81 transitions, 464 flow [2025-03-09 06:46:35,305 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=464, PETRI_PLACES=89, PETRI_TRANSITIONS=81} [2025-03-09 06:46:35,306 INFO L279 CegarLoopForPetriNet]: 67 programPoint places, 22 predicate places. [2025-03-09 06:46:35,306 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 81 transitions, 464 flow [2025-03-09 06:46:35,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:46:35,306 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:46:35,306 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:46:35,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2025-03-09 06:46:35,306 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 31 more)] === [2025-03-09 06:46:35,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:46:35,306 INFO L85 PathProgramCache]: Analyzing trace with hash -343167236, now seen corresponding path program 1 times [2025-03-09 06:46:35,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:46:35,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057659638] [2025-03-09 06:46:35,306 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:46:35,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:46:35,309 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-09 06:46:35,310 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 06:46:35,310 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:46:35,310 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:46:35,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:46:35,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:46:35,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057659638] [2025-03-09 06:46:35,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057659638] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:46:35,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:46:35,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:46:35,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48829422] [2025-03-09 06:46:35,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:46:35,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:46:35,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:46:35,332 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:46:35,332 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:46:35,360 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 93 [2025-03-09 06:46:35,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 81 transitions, 464 flow. Second operand has 5 states, 5 states have (on average 41.8) internal successors, (209), 5 states have internal predecessors, (209), 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) [2025-03-09 06:46:35,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:46:35,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 93 [2025-03-09 06:46:35,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:46:40,452 INFO L124 PetriNetUnfolderBase]: 64220/90610 cut-off events. [2025-03-09 06:46:40,452 INFO L125 PetriNetUnfolderBase]: For 138160/142866 co-relation queries the response was YES. [2025-03-09 06:46:40,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260981 conditions, 90610 events. 64220/90610 cut-off events. For 138160/142866 co-relation queries the response was YES. Maximal size of possible extension queue 4136. Compared 667814 event pairs, 19872 based on Foata normal form. 2977/91882 useless extension candidates. Maximal degree in co-relation 135119. Up to 46402 conditions per place. [2025-03-09 06:46:40,920 INFO L140 encePairwiseOnDemand]: 85/93 looper letters, 102 selfloop transitions, 15 changer transitions 0/140 dead transitions. [2025-03-09 06:46:40,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 140 transitions, 953 flow [2025-03-09 06:46:40,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:46:40,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:46:40,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 334 transitions. [2025-03-09 06:46:40,921 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5985663082437276 [2025-03-09 06:46:40,921 INFO L175 Difference]: Start difference. First operand has 89 places, 81 transitions, 464 flow. Second operand 6 states and 334 transitions. [2025-03-09 06:46:40,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 140 transitions, 953 flow [2025-03-09 06:46:41,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 140 transitions, 923 flow, removed 6 selfloop flow, removed 3 redundant places. [2025-03-09 06:46:41,218 INFO L231 Difference]: Finished difference. Result has 91 places, 80 transitions, 473 flow [2025-03-09 06:46:41,219 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=443, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=473, PETRI_PLACES=91, PETRI_TRANSITIONS=80} [2025-03-09 06:46:41,219 INFO L279 CegarLoopForPetriNet]: 67 programPoint places, 24 predicate places. [2025-03-09 06:46:41,219 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 80 transitions, 473 flow [2025-03-09 06:46:41,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.8) internal successors, (209), 5 states have internal predecessors, (209), 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) [2025-03-09 06:46:41,219 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:46:41,219 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:46:41,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2025-03-09 06:46:41,219 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 31 more)] === [2025-03-09 06:46:41,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:46:41,219 INFO L85 PathProgramCache]: Analyzing trace with hash -342368806, now seen corresponding path program 1 times [2025-03-09 06:46:41,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:46:41,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182953532] [2025-03-09 06:46:41,219 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:46:41,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:46:41,222 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-09 06:46:41,223 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 06:46:41,223 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:46:41,223 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:46:41,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:46:41,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:46:41,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182953532] [2025-03-09 06:46:41,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182953532] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:46:41,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:46:41,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:46:41,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026643313] [2025-03-09 06:46:41,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:46:41,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:46:41,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:46:41,246 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:46:41,246 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:46:41,251 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 93 [2025-03-09 06:46:41,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 80 transitions, 473 flow. Second operand has 4 states, 4 states have (on average 50.75) internal successors, (203), 4 states have internal predecessors, (203), 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) [2025-03-09 06:46:41,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:46:41,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 93 [2025-03-09 06:46:41,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand