./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/06-symbeq_15-list_entry_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/goblint-regression/06-symbeq_15-list_entry_nr.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 a7843ed292ba7ad810f8623eae57d1bf23212a957c35d700b564dc03a7df5581 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 18:43:06,604 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 18:43:06,654 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-06 18:43:06,660 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 18:43:06,660 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 18:43:06,681 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 18:43:06,682 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 18:43:06,682 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 18:43:06,682 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 18:43:06,683 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 18:43:06,683 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 18:43:06,683 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 18:43:06,684 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 18:43:06,684 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 18:43:06,684 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 18:43:06,684 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 18:43:06,685 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 18:43:06,685 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 18:43:06,685 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 18:43:06,685 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 18:43:06,685 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 18:43:06,685 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 18:43:06,685 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 18:43:06,685 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 18:43:06,685 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-06 18:43:06,685 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 18:43:06,685 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 18:43:06,685 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 18:43:06,685 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 18:43:06,685 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 18:43:06,686 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 18:43:06,686 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 18:43:06,686 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 18:43:06,686 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 18:43:06,686 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:43:06,686 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 18:43:06,686 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 18:43:06,686 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 18:43:06,687 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 18:43:06,687 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 18:43:06,687 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 18:43:06,687 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 18:43:06,687 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 18:43:06,687 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 18:43:06,687 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 18:43:06,687 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-jdk21/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 -> a7843ed292ba7ad810f8623eae57d1bf23212a957c35d700b564dc03a7df5581 [2025-02-06 18:43:06,915 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 18:43:06,923 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 18:43:06,924 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 18:43:06,925 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 18:43:06,925 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 18:43:06,927 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/06-symbeq_15-list_entry_nr.i [2025-02-06 18:43:08,025 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7c37b4324/80ddacb799234d02933bad44beb66778/FLAGe98ee0ebc [2025-02-06 18:43:08,292 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 18:43:08,294 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_15-list_entry_nr.i [2025-02-06 18:43:08,317 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7c37b4324/80ddacb799234d02933bad44beb66778/FLAGe98ee0ebc [2025-02-06 18:43:08,579 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7c37b4324/80ddacb799234d02933bad44beb66778 [2025-02-06 18:43:08,581 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 18:43:08,581 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 18:43:08,583 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 18:43:08,583 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 18:43:08,586 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 18:43:08,587 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:43:08" (1/1) ... [2025-02-06 18:43:08,587 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e87be54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:43:08, skipping insertion in model container [2025-02-06 18:43:08,587 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:43:08" (1/1) ... [2025-02-06 18:43:08,620 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 18:43:08,863 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:43:08,873 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 18:43:08,913 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:43:08,944 INFO L204 MainTranslator]: Completed translation [2025-02-06 18:43:08,944 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:43:08 WrapperNode [2025-02-06 18:43:08,945 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 18:43:08,945 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 18:43:08,946 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 18:43:08,946 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 18:43:08,950 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:43:08" (1/1) ... [2025-02-06 18:43:08,961 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:43:08" (1/1) ... [2025-02-06 18:43:08,974 INFO L138 Inliner]: procedures = 186, calls = 12, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 57 [2025-02-06 18:43:08,974 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 18:43:08,975 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 18:43:08,975 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 18:43:08,975 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 18:43:08,979 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:43:08" (1/1) ... [2025-02-06 18:43:08,980 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:43:08" (1/1) ... [2025-02-06 18:43:08,981 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:43:08" (1/1) ... [2025-02-06 18:43:08,998 INFO L175 MemorySlicer]: Split 5 memory accesses to 1 slices as follows [5]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 3 writes are split as follows [3]. [2025-02-06 18:43:08,998 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:43:08" (1/1) ... [2025-02-06 18:43:08,998 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:43:08" (1/1) ... [2025-02-06 18:43:09,006 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:43:08" (1/1) ... [2025-02-06 18:43:09,007 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:43:08" (1/1) ... [2025-02-06 18:43:09,007 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:43:08" (1/1) ... [2025-02-06 18:43:09,008 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:43:08" (1/1) ... [2025-02-06 18:43:09,009 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 18:43:09,009 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 18:43:09,010 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 18:43:09,010 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 18:43:09,010 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:43:08" (1/1) ... [2025-02-06 18:43:09,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:43:09,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:43:09,039 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 18:43:09,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 18:43:09,059 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 18:43:09,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 18:43:09,059 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-02-06 18:43:09,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-06 18:43:09,059 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-02-06 18:43:09,059 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-02-06 18:43:09,059 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-02-06 18:43:09,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 18:43:09,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 18:43:09,060 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 18:43:09,150 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 18:43:09,151 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 18:43:09,277 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 18:43:09,278 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 18:43:09,358 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 18:43:09,358 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 18:43:09,359 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:43:09 BoogieIcfgContainer [2025-02-06 18:43:09,359 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 18:43:09,360 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 18:43:09,360 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 18:43:09,363 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 18:43:09,363 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 06:43:08" (1/3) ... [2025-02-06 18:43:09,364 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2893a84d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:43:09, skipping insertion in model container [2025-02-06 18:43:09,364 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:43:08" (2/3) ... [2025-02-06 18:43:09,364 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2893a84d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:43:09, skipping insertion in model container [2025-02-06 18:43:09,364 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:43:09" (3/3) ... [2025-02-06 18:43:09,365 INFO L128 eAbstractionObserver]: Analyzing ICFG 06-symbeq_15-list_entry_nr.i [2025-02-06 18:43:09,374 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 18:43:09,375 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 06-symbeq_15-list_entry_nr.i that has 2 procedures, 22 locations, 1 initial locations, 0 loop locations, and 4 error locations. [2025-02-06 18:43:09,375 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 18:43:09,408 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-06 18:43:09,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 25 places, 21 transitions, 46 flow [2025-02-06 18:43:09,456 INFO L124 PetriNetUnfolderBase]: 0/20 cut-off events. [2025-02-06 18:43:09,460 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 18:43:09,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24 conditions, 20 events. 0/20 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 31 event pairs, 0 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2025-02-06 18:43:09,464 INFO L82 GeneralOperation]: Start removeDead. Operand has 25 places, 21 transitions, 46 flow [2025-02-06 18:43:09,466 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 20 transitions, 43 flow [2025-02-06 18:43:09,472 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 18:43:09,480 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;@381cb2a5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 18:43:09,480 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2025-02-06 18:43:09,484 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 18:43:09,484 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2025-02-06 18:43:09,484 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 18:43:09,484 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:09,484 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-06 18:43:09,485 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 18:43:09,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:09,489 INFO L85 PathProgramCache]: Analyzing trace with hash 554912112, now seen corresponding path program 1 times [2025-02-06 18:43:09,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:09,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637021855] [2025-02-06 18:43:09,497 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:43:09,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:09,567 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 18:43:09,588 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 18:43:09,589 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:43:09,589 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:09,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:43:09,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:09,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637021855] [2025-02-06 18:43:09,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637021855] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:43:09,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:43:09,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:43:09,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395581036] [2025-02-06 18:43:09,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:43:09,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:43:09,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:09,871 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:43:09,871 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:43:09,882 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 21 [2025-02-06 18:43:09,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 20 transitions, 43 flow. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:43:09,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:09,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 21 [2025-02-06 18:43:09,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:10,006 INFO L124 PetriNetUnfolderBase]: 42/111 cut-off events. [2025-02-06 18:43:10,007 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 18:43:10,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 111 events. 42/111 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 356 event pairs, 12 based on Foata normal form. 7/114 useless extension candidates. Maximal degree in co-relation 208. Up to 73 conditions per place. [2025-02-06 18:43:10,011 INFO L140 encePairwiseOnDemand]: 14/21 looper letters, 23 selfloop transitions, 6 changer transitions 6/39 dead transitions. [2025-02-06 18:43:10,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 39 transitions, 151 flow [2025-02-06 18:43:10,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:43:10,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:43:10,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 69 transitions. [2025-02-06 18:43:10,020 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5476190476190477 [2025-02-06 18:43:10,022 INFO L175 Difference]: Start difference. First operand has 24 places, 20 transitions, 43 flow. Second operand 6 states and 69 transitions. [2025-02-06 18:43:10,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 39 transitions, 151 flow [2025-02-06 18:43:10,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 39 transitions, 150 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:43:10,029 INFO L231 Difference]: Finished difference. Result has 32 places, 23 transitions, 80 flow [2025-02-06 18:43:10,031 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=80, PETRI_PLACES=32, PETRI_TRANSITIONS=23} [2025-02-06 18:43:10,035 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 8 predicate places. [2025-02-06 18:43:10,035 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 23 transitions, 80 flow [2025-02-06 18:43:10,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:43:10,036 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:10,036 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-06 18:43:10,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 18:43:10,037 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 18:43:10,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:10,038 INFO L85 PathProgramCache]: Analyzing trace with hash 555458370, now seen corresponding path program 1 times [2025-02-06 18:43:10,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:10,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255620933] [2025-02-06 18:43:10,038 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:43:10,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:10,044 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 18:43:10,048 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 18:43:10,048 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:43:10,048 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:10,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:43:10,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:10,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255620933] [2025-02-06 18:43:10,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255620933] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:43:10,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:43:10,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:43:10,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043777584] [2025-02-06 18:43:10,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:43:10,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:43:10,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:10,151 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:43:10,152 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:43:10,160 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 21 [2025-02-06 18:43:10,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 23 transitions, 80 flow. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:43:10,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:10,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 21 [2025-02-06 18:43:10,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:10,283 INFO L124 PetriNetUnfolderBase]: 29/96 cut-off events. [2025-02-06 18:43:10,284 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2025-02-06 18:43:10,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233 conditions, 96 events. 29/96 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 325 event pairs, 8 based on Foata normal form. 14/110 useless extension candidates. Maximal degree in co-relation 219. Up to 51 conditions per place. [2025-02-06 18:43:10,287 INFO L140 encePairwiseOnDemand]: 14/21 looper letters, 22 selfloop transitions, 7 changer transitions 4/37 dead transitions. [2025-02-06 18:43:10,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 37 transitions, 196 flow [2025-02-06 18:43:10,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:43:10,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:43:10,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 66 transitions. [2025-02-06 18:43:10,290 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2025-02-06 18:43:10,290 INFO L175 Difference]: Start difference. First operand has 32 places, 23 transitions, 80 flow. Second operand 6 states and 66 transitions. [2025-02-06 18:43:10,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 37 transitions, 196 flow [2025-02-06 18:43:10,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 37 transitions, 186 flow, removed 2 selfloop flow, removed 2 redundant places. [2025-02-06 18:43:10,292 INFO L231 Difference]: Finished difference. Result has 38 places, 26 transitions, 115 flow [2025-02-06 18:43:10,292 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=115, PETRI_PLACES=38, PETRI_TRANSITIONS=26} [2025-02-06 18:43:10,294 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 14 predicate places. [2025-02-06 18:43:10,294 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 26 transitions, 115 flow [2025-02-06 18:43:10,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:43:10,294 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:10,294 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:43:10,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 18:43:10,294 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 18:43:10,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:10,295 INFO L85 PathProgramCache]: Analyzing trace with hash 960140925, now seen corresponding path program 1 times [2025-02-06 18:43:10,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:10,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754986895] [2025-02-06 18:43:10,295 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:43:10,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:10,302 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-06 18:43:10,310 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-06 18:43:10,311 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:43:10,311 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:10,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:43:10,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:10,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754986895] [2025-02-06 18:43:10,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754986895] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:43:10,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:43:10,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 18:43:10,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834853444] [2025-02-06 18:43:10,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:43:10,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:43:10,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:10,460 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:43:10,460 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:43:10,460 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 21 [2025-02-06 18:43:10,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 26 transitions, 115 flow. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 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) [2025-02-06 18:43:10,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:10,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 21 [2025-02-06 18:43:10,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:10,555 INFO L124 PetriNetUnfolderBase]: 25/90 cut-off events. [2025-02-06 18:43:10,555 INFO L125 PetriNetUnfolderBase]: For 71/75 co-relation queries the response was YES. [2025-02-06 18:43:10,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256 conditions, 90 events. 25/90 cut-off events. For 71/75 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 327 event pairs, 1 based on Foata normal form. 7/97 useless extension candidates. Maximal degree in co-relation 240. Up to 27 conditions per place. [2025-02-06 18:43:10,556 INFO L140 encePairwiseOnDemand]: 14/21 looper letters, 30 selfloop transitions, 9 changer transitions 0/45 dead transitions. [2025-02-06 18:43:10,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 45 transitions, 271 flow [2025-02-06 18:43:10,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:43:10,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:43:10,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 66 transitions. [2025-02-06 18:43:10,557 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6285714285714286 [2025-02-06 18:43:10,558 INFO L175 Difference]: Start difference. First operand has 38 places, 26 transitions, 115 flow. Second operand 5 states and 66 transitions. [2025-02-06 18:43:10,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 45 transitions, 271 flow [2025-02-06 18:43:10,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 45 transitions, 260 flow, removed 2 selfloop flow, removed 2 redundant places. [2025-02-06 18:43:10,560 INFO L231 Difference]: Finished difference. Result has 41 places, 30 transitions, 154 flow [2025-02-06 18:43:10,560 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=154, PETRI_PLACES=41, PETRI_TRANSITIONS=30} [2025-02-06 18:43:10,560 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 17 predicate places. [2025-02-06 18:43:10,560 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 30 transitions, 154 flow [2025-02-06 18:43:10,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 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) [2025-02-06 18:43:10,561 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:10,561 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:43:10,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 18:43:10,561 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 18:43:10,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:10,562 INFO L85 PathProgramCache]: Analyzing trace with hash 552836031, now seen corresponding path program 2 times [2025-02-06 18:43:10,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:10,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900053477] [2025-02-06 18:43:10,562 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:43:10,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:10,571 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 11 statements into 1 equivalence classes. [2025-02-06 18:43:10,578 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-06 18:43:10,578 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:43:10,578 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:10,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:43:10,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:10,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900053477] [2025-02-06 18:43:10,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900053477] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:43:10,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:43:10,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 18:43:10,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991543805] [2025-02-06 18:43:10,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:43:10,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:43:10,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:10,718 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:43:10,718 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-06 18:43:10,718 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 21 [2025-02-06 18:43:10,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 30 transitions, 154 flow. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:43:10,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:10,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 21 [2025-02-06 18:43:10,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:10,834 INFO L124 PetriNetUnfolderBase]: 25/104 cut-off events. [2025-02-06 18:43:10,835 INFO L125 PetriNetUnfolderBase]: For 136/140 co-relation queries the response was YES. [2025-02-06 18:43:10,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 333 conditions, 104 events. 25/104 cut-off events. For 136/140 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 421 event pairs, 0 based on Foata normal form. 7/111 useless extension candidates. Maximal degree in co-relation 314. Up to 21 conditions per place. [2025-02-06 18:43:10,836 INFO L140 encePairwiseOnDemand]: 14/21 looper letters, 30 selfloop transitions, 20 changer transitions 0/56 dead transitions. [2025-02-06 18:43:10,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 56 transitions, 386 flow [2025-02-06 18:43:10,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 18:43:10,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-06 18:43:10,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2025-02-06 18:43:10,837 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5654761904761905 [2025-02-06 18:43:10,837 INFO L175 Difference]: Start difference. First operand has 41 places, 30 transitions, 154 flow. Second operand 8 states and 95 transitions. [2025-02-06 18:43:10,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 56 transitions, 386 flow [2025-02-06 18:43:10,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 56 transitions, 360 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 18:43:10,839 INFO L231 Difference]: Finished difference. Result has 47 places, 39 transitions, 229 flow [2025-02-06 18:43:10,839 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=229, PETRI_PLACES=47, PETRI_TRANSITIONS=39} [2025-02-06 18:43:10,840 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 23 predicate places. [2025-02-06 18:43:10,840 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 39 transitions, 229 flow [2025-02-06 18:43:10,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:43:10,840 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:10,840 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:43:10,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 18:43:10,840 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 18:43:10,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:10,841 INFO L85 PathProgramCache]: Analyzing trace with hash 382263617, now seen corresponding path program 3 times [2025-02-06 18:43:10,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:10,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689993986] [2025-02-06 18:43:10,841 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 18:43:10,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:10,851 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 11 statements into 1 equivalence classes. [2025-02-06 18:43:10,856 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-06 18:43:10,857 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-06 18:43:10,857 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:10,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:43:10,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:10,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689993986] [2025-02-06 18:43:10,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689993986] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:43:10,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:43:10,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 18:43:10,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096511632] [2025-02-06 18:43:10,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:43:10,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:43:10,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:10,953 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:43:10,953 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:43:10,953 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 21 [2025-02-06 18:43:10,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 39 transitions, 229 flow. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 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) [2025-02-06 18:43:10,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:10,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 21 [2025-02-06 18:43:10,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:11,036 INFO L124 PetriNetUnfolderBase]: 30/133 cut-off events. [2025-02-06 18:43:11,037 INFO L125 PetriNetUnfolderBase]: For 196/200 co-relation queries the response was YES. [2025-02-06 18:43:11,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 445 conditions, 133 events. 30/133 cut-off events. For 196/200 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 616 event pairs, 6 based on Foata normal form. 10/142 useless extension candidates. Maximal degree in co-relation 425. Up to 57 conditions per place. [2025-02-06 18:43:11,038 INFO L140 encePairwiseOnDemand]: 13/21 looper letters, 39 selfloop transitions, 17 changer transitions 0/62 dead transitions. [2025-02-06 18:43:11,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 62 transitions, 469 flow [2025-02-06 18:43:11,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:43:11,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:43:11,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 72 transitions. [2025-02-06 18:43:11,039 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6857142857142857 [2025-02-06 18:43:11,039 INFO L175 Difference]: Start difference. First operand has 47 places, 39 transitions, 229 flow. Second operand 5 states and 72 transitions. [2025-02-06 18:43:11,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 62 transitions, 469 flow [2025-02-06 18:43:11,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 62 transitions, 436 flow, removed 11 selfloop flow, removed 1 redundant places. [2025-02-06 18:43:11,042 INFO L231 Difference]: Finished difference. Result has 53 places, 49 transitions, 337 flow [2025-02-06 18:43:11,042 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=337, PETRI_PLACES=53, PETRI_TRANSITIONS=49} [2025-02-06 18:43:11,045 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 29 predicate places. [2025-02-06 18:43:11,045 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 49 transitions, 337 flow [2025-02-06 18:43:11,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 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) [2025-02-06 18:43:11,045 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:11,045 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:43:11,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 18:43:11,045 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 18:43:11,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:11,045 INFO L85 PathProgramCache]: Analyzing trace with hash 238316052, now seen corresponding path program 1 times [2025-02-06 18:43:11,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:11,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512758814] [2025-02-06 18:43:11,046 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:43:11,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:11,052 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-06 18:43:11,056 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-06 18:43:11,056 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:43:11,056 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:11,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:43:11,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:11,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512758814] [2025-02-06 18:43:11,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512758814] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:43:11,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:43:11,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 18:43:11,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001142986] [2025-02-06 18:43:11,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:43:11,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:43:11,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:11,190 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:43:11,190 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-06 18:43:11,190 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 21 [2025-02-06 18:43:11,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 49 transitions, 337 flow. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:43:11,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:11,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 21 [2025-02-06 18:43:11,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:11,283 INFO L124 PetriNetUnfolderBase]: 20/96 cut-off events. [2025-02-06 18:43:11,284 INFO L125 PetriNetUnfolderBase]: For 257/261 co-relation queries the response was YES. [2025-02-06 18:43:11,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 380 conditions, 96 events. 20/96 cut-off events. For 257/261 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 369 event pairs, 0 based on Foata normal form. 10/106 useless extension candidates. Maximal degree in co-relation 357. Up to 20 conditions per place. [2025-02-06 18:43:11,285 INFO L140 encePairwiseOnDemand]: 13/21 looper letters, 28 selfloop transitions, 26 changer transitions 0/60 dead transitions. [2025-02-06 18:43:11,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 60 transitions, 511 flow [2025-02-06 18:43:11,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:43:11,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:43:11,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 78 transitions. [2025-02-06 18:43:11,285 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2025-02-06 18:43:11,285 INFO L175 Difference]: Start difference. First operand has 53 places, 49 transitions, 337 flow. Second operand 6 states and 78 transitions. [2025-02-06 18:43:11,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 60 transitions, 511 flow [2025-02-06 18:43:11,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 60 transitions, 497 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 18:43:11,289 INFO L231 Difference]: Finished difference. Result has 56 places, 52 transitions, 421 flow [2025-02-06 18:43:11,289 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=421, PETRI_PLACES=56, PETRI_TRANSITIONS=52} [2025-02-06 18:43:11,289 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 32 predicate places. [2025-02-06 18:43:11,289 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 52 transitions, 421 flow [2025-02-06 18:43:11,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:43:11,290 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:11,290 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:43:11,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-06 18:43:11,290 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 18:43:11,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:11,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1020845331, now seen corresponding path program 1 times [2025-02-06 18:43:11,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:11,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420061331] [2025-02-06 18:43:11,290 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:43:11,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:11,299 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 18:43:11,310 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 18:43:11,311 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:43:11,311 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:11,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:43:11,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:11,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420061331] [2025-02-06 18:43:11,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420061331] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:43:11,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:43:11,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-06 18:43:11,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422146760] [2025-02-06 18:43:11,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:43:11,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 18:43:11,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:11,533 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 18:43:11,533 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-02-06 18:43:11,545 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2025-02-06 18:43:11,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 52 transitions, 421 flow. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 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) [2025-02-06 18:43:11,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:11,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2025-02-06 18:43:11,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:11,766 INFO L124 PetriNetUnfolderBase]: 29/110 cut-off events. [2025-02-06 18:43:11,767 INFO L125 PetriNetUnfolderBase]: For 384/386 co-relation queries the response was YES. [2025-02-06 18:43:11,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 501 conditions, 110 events. 29/110 cut-off events. For 384/386 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 399 event pairs, 0 based on Foata normal form. 4/114 useless extension candidates. Maximal degree in co-relation 478. Up to 55 conditions per place. [2025-02-06 18:43:11,768 INFO L140 encePairwiseOnDemand]: 11/21 looper letters, 52 selfloop transitions, 22 changer transitions 0/75 dead transitions. [2025-02-06 18:43:11,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 75 transitions, 718 flow [2025-02-06 18:43:11,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-06 18:43:11,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-02-06 18:43:11,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 78 transitions. [2025-02-06 18:43:11,772 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2857142857142857 [2025-02-06 18:43:11,772 INFO L175 Difference]: Start difference. First operand has 56 places, 52 transitions, 421 flow. Second operand 13 states and 78 transitions. [2025-02-06 18:43:11,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 75 transitions, 718 flow [2025-02-06 18:43:11,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 75 transitions, 696 flow, removed 11 selfloop flow, removed 0 redundant places. [2025-02-06 18:43:11,777 INFO L231 Difference]: Finished difference. Result has 72 places, 61 transitions, 536 flow [2025-02-06 18:43:11,777 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=536, PETRI_PLACES=72, PETRI_TRANSITIONS=61} [2025-02-06 18:43:11,778 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 48 predicate places. [2025-02-06 18:43:11,779 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 61 transitions, 536 flow [2025-02-06 18:43:11,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 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) [2025-02-06 18:43:11,779 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:11,779 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:43:11,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-06 18:43:11,779 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 18:43:11,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:11,780 INFO L85 PathProgramCache]: Analyzing trace with hash -41473743, now seen corresponding path program 2 times [2025-02-06 18:43:11,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:11,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735988690] [2025-02-06 18:43:11,780 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:43:11,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:11,787 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 12 statements into 1 equivalence classes. [2025-02-06 18:43:11,791 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 18:43:11,791 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:43:11,791 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:12,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:43:12,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:12,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735988690] [2025-02-06 18:43:12,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735988690] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:43:12,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:43:12,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-06 18:43:12,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672826954] [2025-02-06 18:43:12,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:43:12,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 18:43:12,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:12,055 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 18:43:12,055 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-02-06 18:43:12,074 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2025-02-06 18:43:12,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 61 transitions, 536 flow. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 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) [2025-02-06 18:43:12,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:12,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2025-02-06 18:43:12,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:12,250 INFO L124 PetriNetUnfolderBase]: 32/126 cut-off events. [2025-02-06 18:43:12,250 INFO L125 PetriNetUnfolderBase]: For 531/533 co-relation queries the response was YES. [2025-02-06 18:43:12,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 607 conditions, 126 events. 32/126 cut-off events. For 531/533 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 509 event pairs, 2 based on Foata normal form. 4/130 useless extension candidates. Maximal degree in co-relation 578. Up to 64 conditions per place. [2025-02-06 18:43:12,251 INFO L140 encePairwiseOnDemand]: 11/21 looper letters, 61 selfloop transitions, 25 changer transitions 0/87 dead transitions. [2025-02-06 18:43:12,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 87 transitions, 904 flow [2025-02-06 18:43:12,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-06 18:43:12,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-02-06 18:43:12,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 74 transitions. [2025-02-06 18:43:12,258 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.27106227106227104 [2025-02-06 18:43:12,258 INFO L175 Difference]: Start difference. First operand has 72 places, 61 transitions, 536 flow. Second operand 13 states and 74 transitions. [2025-02-06 18:43:12,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 87 transitions, 904 flow [2025-02-06 18:43:12,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 87 transitions, 862 flow, removed 5 selfloop flow, removed 4 redundant places. [2025-02-06 18:43:12,261 INFO L231 Difference]: Finished difference. Result has 85 places, 72 transitions, 672 flow [2025-02-06 18:43:12,262 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=672, PETRI_PLACES=85, PETRI_TRANSITIONS=72} [2025-02-06 18:43:12,262 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 61 predicate places. [2025-02-06 18:43:12,262 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 72 transitions, 672 flow [2025-02-06 18:43:12,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 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) [2025-02-06 18:43:12,262 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:12,263 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:43:12,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-06 18:43:12,263 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 18:43:12,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:12,263 INFO L85 PathProgramCache]: Analyzing trace with hash -824233585, now seen corresponding path program 3 times [2025-02-06 18:43:12,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:12,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113723252] [2025-02-06 18:43:12,263 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 18:43:12,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:12,268 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 12 statements into 1 equivalence classes. [2025-02-06 18:43:12,272 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 18:43:12,272 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-06 18:43:12,272 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:12,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:43:12,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:12,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113723252] [2025-02-06 18:43:12,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113723252] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:43:12,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:43:12,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-06 18:43:12,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942910553] [2025-02-06 18:43:12,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:43:12,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 18:43:12,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:12,472 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 18:43:12,472 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-02-06 18:43:12,486 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2025-02-06 18:43:12,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 72 transitions, 672 flow. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 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) [2025-02-06 18:43:12,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:12,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2025-02-06 18:43:12,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:12,658 INFO L124 PetriNetUnfolderBase]: 35/140 cut-off events. [2025-02-06 18:43:12,658 INFO L125 PetriNetUnfolderBase]: For 674/674 co-relation queries the response was YES. [2025-02-06 18:43:12,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 727 conditions, 140 events. 35/140 cut-off events. For 674/674 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 610 event pairs, 0 based on Foata normal form. 2/142 useless extension candidates. Maximal degree in co-relation 693. Up to 70 conditions per place. [2025-02-06 18:43:12,660 INFO L140 encePairwiseOnDemand]: 11/21 looper letters, 67 selfloop transitions, 28 changer transitions 0/96 dead transitions. [2025-02-06 18:43:12,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 96 transitions, 1051 flow [2025-02-06 18:43:12,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-06 18:43:12,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-02-06 18:43:12,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 82 transitions. [2025-02-06 18:43:12,661 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2789115646258503 [2025-02-06 18:43:12,661 INFO L175 Difference]: Start difference. First operand has 85 places, 72 transitions, 672 flow. Second operand 14 states and 82 transitions. [2025-02-06 18:43:12,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 96 transitions, 1051 flow [2025-02-06 18:43:12,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 96 transitions, 1017 flow, removed 5 selfloop flow, removed 3 redundant places. [2025-02-06 18:43:12,668 INFO L231 Difference]: Finished difference. Result has 101 places, 81 transitions, 818 flow [2025-02-06 18:43:12,669 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=642, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=818, PETRI_PLACES=101, PETRI_TRANSITIONS=81} [2025-02-06 18:43:12,670 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 77 predicate places. [2025-02-06 18:43:12,670 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 81 transitions, 818 flow [2025-02-06 18:43:12,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 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) [2025-02-06 18:43:12,670 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:12,670 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:43:12,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-06 18:43:12,670 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 18:43:12,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:12,671 INFO L85 PathProgramCache]: Analyzing trace with hash 645804627, now seen corresponding path program 4 times [2025-02-06 18:43:12,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:12,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33031389] [2025-02-06 18:43:12,671 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 18:43:12,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:12,677 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 12 statements into 2 equivalence classes. [2025-02-06 18:43:12,683 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 18:43:12,687 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 18:43:12,687 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:12,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:43:12,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:12,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33031389] [2025-02-06 18:43:12,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33031389] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:43:12,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:43:12,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-06 18:43:12,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570965299] [2025-02-06 18:43:12,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:43:12,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 18:43:12,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:12,883 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 18:43:12,884 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-02-06 18:43:12,897 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2025-02-06 18:43:12,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 81 transitions, 818 flow. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 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) [2025-02-06 18:43:12,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:12,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2025-02-06 18:43:12,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:13,096 INFO L124 PetriNetUnfolderBase]: 34/136 cut-off events. [2025-02-06 18:43:13,096 INFO L125 PetriNetUnfolderBase]: For 844/844 co-relation queries the response was YES. [2025-02-06 18:43:13,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 773 conditions, 136 events. 34/136 cut-off events. For 844/844 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 576 event pairs, 3 based on Foata normal form. 2/138 useless extension candidates. Maximal degree in co-relation 732. Up to 35 conditions per place. [2025-02-06 18:43:13,097 INFO L140 encePairwiseOnDemand]: 11/21 looper letters, 54 selfloop transitions, 46 changer transitions 0/101 dead transitions. [2025-02-06 18:43:13,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 101 transitions, 1184 flow [2025-02-06 18:43:13,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-06 18:43:13,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-02-06 18:43:13,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 81 transitions. [2025-02-06 18:43:13,099 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2571428571428571 [2025-02-06 18:43:13,100 INFO L175 Difference]: Start difference. First operand has 101 places, 81 transitions, 818 flow. Second operand 15 states and 81 transitions. [2025-02-06 18:43:13,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 101 transitions, 1184 flow [2025-02-06 18:43:13,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 101 transitions, 1135 flow, removed 12 selfloop flow, removed 7 redundant places. [2025-02-06 18:43:13,106 INFO L231 Difference]: Finished difference. Result has 107 places, 88 transitions, 936 flow [2025-02-06 18:43:13,107 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=761, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=936, PETRI_PLACES=107, PETRI_TRANSITIONS=88} [2025-02-06 18:43:13,107 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 83 predicate places. [2025-02-06 18:43:13,108 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 88 transitions, 936 flow [2025-02-06 18:43:13,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 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) [2025-02-06 18:43:13,108 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:13,108 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:43:13,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-06 18:43:13,109 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 18:43:13,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:13,109 INFO L85 PathProgramCache]: Analyzing trace with hash -134780674, now seen corresponding path program 1 times [2025-02-06 18:43:13,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:13,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116139712] [2025-02-06 18:43:13,109 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:43:13,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:13,117 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 18:43:13,121 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 18:43:13,122 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:43:13,122 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:13,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:43:13,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:13,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116139712] [2025-02-06 18:43:13,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116139712] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:43:13,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:43:13,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-06 18:43:13,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866035404] [2025-02-06 18:43:13,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:43:13,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 18:43:13,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:13,303 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 18:43:13,303 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-02-06 18:43:13,319 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2025-02-06 18:43:13,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 88 transitions, 936 flow. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 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) [2025-02-06 18:43:13,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:13,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2025-02-06 18:43:13,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:13,530 INFO L124 PetriNetUnfolderBase]: 39/156 cut-off events. [2025-02-06 18:43:13,530 INFO L125 PetriNetUnfolderBase]: For 883/883 co-relation queries the response was YES. [2025-02-06 18:43:13,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 869 conditions, 156 events. 39/156 cut-off events. For 883/883 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 714 event pairs, 1 based on Foata normal form. 2/158 useless extension candidates. Maximal degree in co-relation 831. Up to 86 conditions per place. [2025-02-06 18:43:13,532 INFO L140 encePairwiseOnDemand]: 11/21 looper letters, 75 selfloop transitions, 28 changer transitions 0/113 dead transitions. [2025-02-06 18:43:13,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 113 transitions, 1300 flow [2025-02-06 18:43:13,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-06 18:43:13,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-02-06 18:43:13,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 81 transitions. [2025-02-06 18:43:13,533 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2755102040816326 [2025-02-06 18:43:13,533 INFO L175 Difference]: Start difference. First operand has 107 places, 88 transitions, 936 flow. Second operand 14 states and 81 transitions. [2025-02-06 18:43:13,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 113 transitions, 1300 flow [2025-02-06 18:43:13,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 113 transitions, 1201 flow, removed 21 selfloop flow, removed 11 redundant places. [2025-02-06 18:43:13,540 INFO L231 Difference]: Finished difference. Result has 115 places, 98 transitions, 1004 flow [2025-02-06 18:43:13,540 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=840, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1004, PETRI_PLACES=115, PETRI_TRANSITIONS=98} [2025-02-06 18:43:13,540 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 91 predicate places. [2025-02-06 18:43:13,540 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 98 transitions, 1004 flow [2025-02-06 18:43:13,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 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) [2025-02-06 18:43:13,541 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:13,541 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:43:13,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-06 18:43:13,541 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 18:43:13,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:13,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1202614502, now seen corresponding path program 2 times [2025-02-06 18:43:13,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:13,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236632937] [2025-02-06 18:43:13,541 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:43:13,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:13,549 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 12 statements into 1 equivalence classes. [2025-02-06 18:43:13,554 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 18:43:13,554 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:43:13,554 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:13,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:43:13,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:13,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236632937] [2025-02-06 18:43:13,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236632937] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:43:13,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:43:13,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-06 18:43:13,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212440716] [2025-02-06 18:43:13,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:43:13,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 18:43:13,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:13,756 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 18:43:13,756 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-02-06 18:43:13,771 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2025-02-06 18:43:13,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 98 transitions, 1004 flow. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 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) [2025-02-06 18:43:13,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:13,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2025-02-06 18:43:13,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:13,962 INFO L124 PetriNetUnfolderBase]: 37/157 cut-off events. [2025-02-06 18:43:13,962 INFO L125 PetriNetUnfolderBase]: For 927/927 co-relation queries the response was YES. [2025-02-06 18:43:13,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 897 conditions, 157 events. 37/157 cut-off events. For 927/927 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 736 event pairs, 4 based on Foata normal form. 2/159 useless extension candidates. Maximal degree in co-relation 858. Up to 88 conditions per place. [2025-02-06 18:43:13,963 INFO L140 encePairwiseOnDemand]: 11/21 looper letters, 76 selfloop transitions, 29 changer transitions 0/115 dead transitions. [2025-02-06 18:43:13,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 115 transitions, 1334 flow [2025-02-06 18:43:13,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-06 18:43:13,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-02-06 18:43:13,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 77 transitions. [2025-02-06 18:43:13,964 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.28205128205128205 [2025-02-06 18:43:13,964 INFO L175 Difference]: Start difference. First operand has 115 places, 98 transitions, 1004 flow. Second operand 13 states and 77 transitions. [2025-02-06 18:43:13,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 115 transitions, 1334 flow [2025-02-06 18:43:13,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 115 transitions, 1304 flow, removed 5 selfloop flow, removed 3 redundant places. [2025-02-06 18:43:13,970 INFO L231 Difference]: Finished difference. Result has 127 places, 103 transitions, 1087 flow [2025-02-06 18:43:13,971 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=978, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1087, PETRI_PLACES=127, PETRI_TRANSITIONS=103} [2025-02-06 18:43:13,972 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 103 predicate places. [2025-02-06 18:43:13,973 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 103 transitions, 1087 flow [2025-02-06 18:43:13,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 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) [2025-02-06 18:43:13,973 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:13,973 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:43:13,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-02-06 18:43:13,973 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 18:43:13,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:13,974 INFO L85 PathProgramCache]: Analyzing trace with hash 934392834, now seen corresponding path program 3 times [2025-02-06 18:43:13,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:13,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740235329] [2025-02-06 18:43:13,974 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 18:43:13,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:13,985 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 12 statements into 1 equivalence classes. [2025-02-06 18:43:13,988 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 18:43:13,989 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-06 18:43:13,989 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:14,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:43:14,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:14,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740235329] [2025-02-06 18:43:14,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740235329] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:43:14,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:43:14,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-06 18:43:14,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050886351] [2025-02-06 18:43:14,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:43:14,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 18:43:14,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:14,092 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 18:43:14,092 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-02-06 18:43:14,103 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2025-02-06 18:43:14,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 103 transitions, 1087 flow. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 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) [2025-02-06 18:43:14,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:14,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2025-02-06 18:43:14,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:14,284 INFO L124 PetriNetUnfolderBase]: 37/170 cut-off events. [2025-02-06 18:43:14,284 INFO L125 PetriNetUnfolderBase]: For 1104/1104 co-relation queries the response was YES. [2025-02-06 18:43:14,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1001 conditions, 170 events. 37/170 cut-off events. For 1104/1104 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 860 event pairs, 0 based on Foata normal form. 2/172 useless extension candidates. Maximal degree in co-relation 959. Up to 78 conditions per place. [2025-02-06 18:43:14,286 INFO L140 encePairwiseOnDemand]: 12/21 looper letters, 72 selfloop transitions, 43 changer transitions 0/121 dead transitions. [2025-02-06 18:43:14,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 121 transitions, 1451 flow [2025-02-06 18:43:14,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-06 18:43:14,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-02-06 18:43:14,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 78 transitions. [2025-02-06 18:43:14,287 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.30952380952380953 [2025-02-06 18:43:14,287 INFO L175 Difference]: Start difference. First operand has 127 places, 103 transitions, 1087 flow. Second operand 12 states and 78 transitions. [2025-02-06 18:43:14,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 121 transitions, 1451 flow [2025-02-06 18:43:14,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 121 transitions, 1402 flow, removed 6 selfloop flow, removed 6 redundant places. [2025-02-06 18:43:14,294 INFO L231 Difference]: Finished difference. Result has 137 places, 115 transitions, 1250 flow [2025-02-06 18:43:14,294 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=1038, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1250, PETRI_PLACES=137, PETRI_TRANSITIONS=115} [2025-02-06 18:43:14,294 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 113 predicate places. [2025-02-06 18:43:14,294 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 115 transitions, 1250 flow [2025-02-06 18:43:14,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 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) [2025-02-06 18:43:14,295 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:14,295 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:43:14,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-02-06 18:43:14,295 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 18:43:14,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:14,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1793862010, now seen corresponding path program 4 times [2025-02-06 18:43:14,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:14,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015389825] [2025-02-06 18:43:14,295 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 18:43:14,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:14,299 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 12 statements into 2 equivalence classes. [2025-02-06 18:43:14,302 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 18:43:14,303 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 18:43:14,303 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:14,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:43:14,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:14,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015389825] [2025-02-06 18:43:14,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015389825] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:43:14,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:43:14,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-06 18:43:14,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175577871] [2025-02-06 18:43:14,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:43:14,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 18:43:14,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:14,446 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 18:43:14,446 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-02-06 18:43:14,466 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2025-02-06 18:43:14,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 115 transitions, 1250 flow. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 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) [2025-02-06 18:43:14,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:14,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2025-02-06 18:43:14,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:14,662 INFO L124 PetriNetUnfolderBase]: 43/186 cut-off events. [2025-02-06 18:43:14,662 INFO L125 PetriNetUnfolderBase]: For 1381/1381 co-relation queries the response was YES. [2025-02-06 18:43:14,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1152 conditions, 186 events. 43/186 cut-off events. For 1381/1381 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 964 event pairs, 2 based on Foata normal form. 2/188 useless extension candidates. Maximal degree in co-relation 1106. Up to 96 conditions per place. [2025-02-06 18:43:14,663 INFO L140 encePairwiseOnDemand]: 11/21 looper letters, 92 selfloop transitions, 37 changer transitions 0/139 dead transitions. [2025-02-06 18:43:14,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 139 transitions, 1717 flow [2025-02-06 18:43:14,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-06 18:43:14,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-02-06 18:43:14,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 73 transitions. [2025-02-06 18:43:14,664 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2673992673992674 [2025-02-06 18:43:14,664 INFO L175 Difference]: Start difference. First operand has 137 places, 115 transitions, 1250 flow. Second operand 13 states and 73 transitions. [2025-02-06 18:43:14,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 139 transitions, 1717 flow [2025-02-06 18:43:14,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 139 transitions, 1652 flow, removed 19 selfloop flow, removed 2 redundant places. [2025-02-06 18:43:14,672 INFO L231 Difference]: Finished difference. Result has 151 places, 122 transitions, 1378 flow [2025-02-06 18:43:14,672 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=1203, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1378, PETRI_PLACES=151, PETRI_TRANSITIONS=122} [2025-02-06 18:43:14,673 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 127 predicate places. [2025-02-06 18:43:14,673 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 122 transitions, 1378 flow [2025-02-06 18:43:14,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 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) [2025-02-06 18:43:14,673 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:14,673 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:43:14,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-02-06 18:43:14,673 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 18:43:14,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:14,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1586516650, now seen corresponding path program 5 times [2025-02-06 18:43:14,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:14,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791683746] [2025-02-06 18:43:14,674 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 18:43:14,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:14,678 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 12 statements into 1 equivalence classes. [2025-02-06 18:43:14,681 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 18:43:14,681 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:43:14,682 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:14,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:43:14,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:14,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791683746] [2025-02-06 18:43:14,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791683746] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:43:14,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:43:14,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-06 18:43:14,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499049249] [2025-02-06 18:43:14,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:43:14,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 18:43:14,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:14,814 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 18:43:14,814 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-02-06 18:43:14,828 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2025-02-06 18:43:14,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 122 transitions, 1378 flow. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 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) [2025-02-06 18:43:14,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:14,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2025-02-06 18:43:14,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:15,032 INFO L124 PetriNetUnfolderBase]: 42/183 cut-off events. [2025-02-06 18:43:15,032 INFO L125 PetriNetUnfolderBase]: For 1520/1520 co-relation queries the response was YES. [2025-02-06 18:43:15,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1177 conditions, 183 events. 42/183 cut-off events. For 1520/1520 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 944 event pairs, 2 based on Foata normal form. 2/185 useless extension candidates. Maximal degree in co-relation 1126. Up to 59 conditions per place. [2025-02-06 18:43:15,034 INFO L140 encePairwiseOnDemand]: 11/21 looper letters, 77 selfloop transitions, 55 changer transitions 0/142 dead transitions. [2025-02-06 18:43:15,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 142 transitions, 1826 flow [2025-02-06 18:43:15,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-06 18:43:15,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-02-06 18:43:15,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 80 transitions. [2025-02-06 18:43:15,035 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.25396825396825395 [2025-02-06 18:43:15,036 INFO L175 Difference]: Start difference. First operand has 151 places, 122 transitions, 1378 flow. Second operand 15 states and 80 transitions. [2025-02-06 18:43:15,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 142 transitions, 1826 flow [2025-02-06 18:43:15,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 142 transitions, 1721 flow, removed 20 selfloop flow, removed 12 redundant places. [2025-02-06 18:43:15,060 INFO L231 Difference]: Finished difference. Result has 152 places, 130 transitions, 1467 flow [2025-02-06 18:43:15,060 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=1270, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1467, PETRI_PLACES=152, PETRI_TRANSITIONS=130} [2025-02-06 18:43:15,061 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 128 predicate places. [2025-02-06 18:43:15,061 INFO L471 AbstractCegarLoop]: Abstraction has has 152 places, 130 transitions, 1467 flow [2025-02-06 18:43:15,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 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) [2025-02-06 18:43:15,061 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:15,061 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:43:15,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-02-06 18:43:15,061 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 18:43:15,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:15,061 INFO L85 PathProgramCache]: Analyzing trace with hash 218562755, now seen corresponding path program 1 times [2025-02-06 18:43:15,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:15,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481675812] [2025-02-06 18:43:15,062 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:43:15,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:15,066 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 18:43:15,069 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 18:43:15,069 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:43:15,069 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:15,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:43:15,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:15,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481675812] [2025-02-06 18:43:15,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481675812] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:43:15,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:43:15,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-06 18:43:15,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021584233] [2025-02-06 18:43:15,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:43:15,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 18:43:15,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:15,203 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 18:43:15,204 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2025-02-06 18:43:15,220 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2025-02-06 18:43:15,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 130 transitions, 1467 flow. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 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) [2025-02-06 18:43:15,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:15,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2025-02-06 18:43:15,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:15,432 INFO L124 PetriNetUnfolderBase]: 40/179 cut-off events. [2025-02-06 18:43:15,432 INFO L125 PetriNetUnfolderBase]: For 1456/1456 co-relation queries the response was YES. [2025-02-06 18:43:15,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1149 conditions, 179 events. 40/179 cut-off events. For 1456/1456 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 920 event pairs, 1 based on Foata normal form. 2/181 useless extension candidates. Maximal degree in co-relation 1105. Up to 115 conditions per place. [2025-02-06 18:43:15,433 INFO L140 encePairwiseOnDemand]: 12/21 looper letters, 84 selfloop transitions, 21 changer transitions 16/139 dead transitions. [2025-02-06 18:43:15,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 139 transitions, 1773 flow [2025-02-06 18:43:15,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-06 18:43:15,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-02-06 18:43:15,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 92 transitions. [2025-02-06 18:43:15,434 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2920634920634921 [2025-02-06 18:43:15,434 INFO L175 Difference]: Start difference. First operand has 152 places, 130 transitions, 1467 flow. Second operand 15 states and 92 transitions. [2025-02-06 18:43:15,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 139 transitions, 1773 flow [2025-02-06 18:43:15,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 139 transitions, 1674 flow, removed 20 selfloop flow, removed 9 redundant places. [2025-02-06 18:43:15,441 INFO L231 Difference]: Finished difference. Result has 159 places, 118 transitions, 1289 flow [2025-02-06 18:43:15,441 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=1368, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1289, PETRI_PLACES=159, PETRI_TRANSITIONS=118} [2025-02-06 18:43:15,441 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 135 predicate places. [2025-02-06 18:43:15,441 INFO L471 AbstractCegarLoop]: Abstraction has has 159 places, 118 transitions, 1289 flow [2025-02-06 18:43:15,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 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) [2025-02-06 18:43:15,441 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:15,442 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:43:15,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-02-06 18:43:15,442 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 18:43:15,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:15,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1581434075, now seen corresponding path program 2 times [2025-02-06 18:43:15,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:15,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896978510] [2025-02-06 18:43:15,442 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:43:15,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:15,447 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 1 equivalence classes. [2025-02-06 18:43:15,449 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 18:43:15,449 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:43:15,449 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:15,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:43:15,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:15,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896978510] [2025-02-06 18:43:15,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896978510] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:43:15,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:43:15,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-06 18:43:15,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95527359] [2025-02-06 18:43:15,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:43:15,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 18:43:15,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:15,614 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 18:43:15,614 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-02-06 18:43:15,636 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2025-02-06 18:43:15,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 118 transitions, 1289 flow. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 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) [2025-02-06 18:43:15,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:15,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2025-02-06 18:43:15,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:15,801 INFO L124 PetriNetUnfolderBase]: 35/156 cut-off events. [2025-02-06 18:43:15,802 INFO L125 PetriNetUnfolderBase]: For 1313/1315 co-relation queries the response was YES. [2025-02-06 18:43:15,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 989 conditions, 156 events. 35/156 cut-off events. For 1313/1315 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 744 event pairs, 1 based on Foata normal form. 2/158 useless extension candidates. Maximal degree in co-relation 946. Up to 102 conditions per place. [2025-02-06 18:43:15,803 INFO L140 encePairwiseOnDemand]: 12/21 looper letters, 75 selfloop transitions, 19 changer transitions 16/125 dead transitions. [2025-02-06 18:43:15,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 125 transitions, 1558 flow [2025-02-06 18:43:15,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-06 18:43:15,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-02-06 18:43:15,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 77 transitions. [2025-02-06 18:43:15,804 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3055555555555556 [2025-02-06 18:43:15,804 INFO L175 Difference]: Start difference. First operand has 159 places, 118 transitions, 1289 flow. Second operand 12 states and 77 transitions. [2025-02-06 18:43:15,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 125 transitions, 1558 flow [2025-02-06 18:43:15,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 125 transitions, 1447 flow, removed 6 selfloop flow, removed 15 redundant places. [2025-02-06 18:43:15,809 INFO L231 Difference]: Finished difference. Result has 147 places, 106 transitions, 1087 flow [2025-02-06 18:43:15,810 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=1184, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1087, PETRI_PLACES=147, PETRI_TRANSITIONS=106} [2025-02-06 18:43:15,810 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 123 predicate places. [2025-02-06 18:43:15,810 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 106 transitions, 1087 flow [2025-02-06 18:43:15,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 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) [2025-02-06 18:43:15,811 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:15,811 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:43:15,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-02-06 18:43:15,812 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 18:43:15,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:15,812 INFO L85 PathProgramCache]: Analyzing trace with hash -2067256469, now seen corresponding path program 3 times [2025-02-06 18:43:15,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:15,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644354990] [2025-02-06 18:43:15,812 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 18:43:15,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:15,817 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 13 statements into 1 equivalence classes. [2025-02-06 18:43:15,819 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 18:43:15,819 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-06 18:43:15,820 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:15,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:43:15,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:15,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644354990] [2025-02-06 18:43:15,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644354990] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:43:15,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:43:15,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-06 18:43:15,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76892303] [2025-02-06 18:43:15,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:43:15,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 18:43:15,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:15,954 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 18:43:15,954 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-02-06 18:43:15,973 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2025-02-06 18:43:15,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 106 transitions, 1087 flow. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 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) [2025-02-06 18:43:15,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:15,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2025-02-06 18:43:15,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:16,184 INFO L124 PetriNetUnfolderBase]: 31/140 cut-off events. [2025-02-06 18:43:16,184 INFO L125 PetriNetUnfolderBase]: For 978/980 co-relation queries the response was YES. [2025-02-06 18:43:16,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 841 conditions, 140 events. 31/140 cut-off events. For 978/980 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 634 event pairs, 0 based on Foata normal form. 2/142 useless extension candidates. Maximal degree in co-relation 801. Up to 89 conditions per place. [2025-02-06 18:43:16,185 INFO L140 encePairwiseOnDemand]: 12/21 looper letters, 67 selfloop transitions, 18 changer transitions 17/114 dead transitions. [2025-02-06 18:43:16,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 114 transitions, 1338 flow [2025-02-06 18:43:16,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-06 18:43:16,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-02-06 18:43:16,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 92 transitions. [2025-02-06 18:43:16,188 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.27380952380952384 [2025-02-06 18:43:16,188 INFO L175 Difference]: Start difference. First operand has 147 places, 106 transitions, 1087 flow. Second operand 16 states and 92 transitions. [2025-02-06 18:43:16,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 114 transitions, 1338 flow [2025-02-06 18:43:16,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 114 transitions, 1202 flow, removed 5 selfloop flow, removed 15 redundant places. [2025-02-06 18:43:16,193 INFO L231 Difference]: Finished difference. Result has 139 places, 94 transitions, 886 flow [2025-02-06 18:43:16,193 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=954, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=886, PETRI_PLACES=139, PETRI_TRANSITIONS=94} [2025-02-06 18:43:16,193 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 115 predicate places. [2025-02-06 18:43:16,194 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 94 transitions, 886 flow [2025-02-06 18:43:16,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 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) [2025-02-06 18:43:16,194 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:16,194 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:43:16,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-02-06 18:43:16,194 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 18:43:16,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:16,194 INFO L85 PathProgramCache]: Analyzing trace with hash 2147433617, now seen corresponding path program 4 times [2025-02-06 18:43:16,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:16,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266517842] [2025-02-06 18:43:16,195 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 18:43:16,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:16,199 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 13 statements into 2 equivalence classes. [2025-02-06 18:43:16,201 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 18:43:16,202 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 18:43:16,202 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:16,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:43:16,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:16,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266517842] [2025-02-06 18:43:16,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266517842] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:43:16,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:43:16,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-06 18:43:16,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359204863] [2025-02-06 18:43:16,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:43:16,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 18:43:16,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:16,330 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 18:43:16,330 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-02-06 18:43:16,345 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2025-02-06 18:43:16,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 94 transitions, 886 flow. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 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) [2025-02-06 18:43:16,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:16,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2025-02-06 18:43:16,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:16,530 INFO L124 PetriNetUnfolderBase]: 25/127 cut-off events. [2025-02-06 18:43:16,530 INFO L125 PetriNetUnfolderBase]: For 718/718 co-relation queries the response was YES. [2025-02-06 18:43:16,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 698 conditions, 127 events. 25/127 cut-off events. For 718/718 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 565 event pairs, 0 based on Foata normal form. 2/129 useless extension candidates. Maximal degree in co-relation 673. Up to 77 conditions per place. [2025-02-06 18:43:16,531 INFO L140 encePairwiseOnDemand]: 12/21 looper letters, 58 selfloop transitions, 19 changer transitions 12/101 dead transitions. [2025-02-06 18:43:16,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 101 transitions, 1105 flow [2025-02-06 18:43:16,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-06 18:43:16,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-02-06 18:43:16,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 91 transitions. [2025-02-06 18:43:16,532 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2708333333333333 [2025-02-06 18:43:16,532 INFO L175 Difference]: Start difference. First operand has 139 places, 94 transitions, 886 flow. Second operand 16 states and 91 transitions. [2025-02-06 18:43:16,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 101 transitions, 1105 flow [2025-02-06 18:43:16,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 101 transitions, 1025 flow, removed 4 selfloop flow, removed 18 redundant places. [2025-02-06 18:43:16,535 INFO L231 Difference]: Finished difference. Result has 127 places, 87 transitions, 799 flow [2025-02-06 18:43:16,535 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=806, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=799, PETRI_PLACES=127, PETRI_TRANSITIONS=87} [2025-02-06 18:43:16,536 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 103 predicate places. [2025-02-06 18:43:16,536 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 87 transitions, 799 flow [2025-02-06 18:43:16,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 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) [2025-02-06 18:43:16,536 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:16,536 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:43:16,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-02-06 18:43:16,536 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 18:43:16,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:16,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1098593091, now seen corresponding path program 1 times [2025-02-06 18:43:16,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:16,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074033945] [2025-02-06 18:43:16,537 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:43:16,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:16,541 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 18:43:16,543 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 18:43:16,543 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:43:16,543 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:16,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:43:16,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:16,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074033945] [2025-02-06 18:43:16,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074033945] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:43:16,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:43:16,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-06 18:43:16,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367611890] [2025-02-06 18:43:16,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:43:16,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 18:43:16,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:16,680 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 18:43:16,680 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-02-06 18:43:16,700 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2025-02-06 18:43:16,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 87 transitions, 799 flow. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 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) [2025-02-06 18:43:16,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:16,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2025-02-06 18:43:16,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:16,900 INFO L124 PetriNetUnfolderBase]: 18/103 cut-off events. [2025-02-06 18:43:16,902 INFO L125 PetriNetUnfolderBase]: For 521/521 co-relation queries the response was YES. [2025-02-06 18:43:16,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 582 conditions, 103 events. 18/103 cut-off events. For 521/521 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 421 event pairs, 0 based on Foata normal form. 8/111 useless extension candidates. Maximal degree in co-relation 557. Up to 25 conditions per place. [2025-02-06 18:43:16,902 INFO L140 encePairwiseOnDemand]: 12/21 looper letters, 25 selfloop transitions, 7 changer transitions 53/89 dead transitions. [2025-02-06 18:43:16,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 89 transitions, 967 flow [2025-02-06 18:43:16,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-06 18:43:16,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-02-06 18:43:16,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 90 transitions. [2025-02-06 18:43:16,904 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2857142857142857 [2025-02-06 18:43:16,904 INFO L175 Difference]: Start difference. First operand has 127 places, 87 transitions, 799 flow. Second operand 15 states and 90 transitions. [2025-02-06 18:43:16,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 89 transitions, 967 flow [2025-02-06 18:43:16,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 89 transitions, 911 flow, removed 3 selfloop flow, removed 16 redundant places. [2025-02-06 18:43:16,906 INFO L231 Difference]: Finished difference. Result has 119 places, 34 transitions, 256 flow [2025-02-06 18:43:16,907 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=716, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=256, PETRI_PLACES=119, PETRI_TRANSITIONS=34} [2025-02-06 18:43:16,907 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 95 predicate places. [2025-02-06 18:43:16,907 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 34 transitions, 256 flow [2025-02-06 18:43:16,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 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) [2025-02-06 18:43:16,907 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:16,907 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:43:16,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-02-06 18:43:16,907 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 18:43:16,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:16,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1937376021, now seen corresponding path program 2 times [2025-02-06 18:43:16,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:16,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224300270] [2025-02-06 18:43:16,909 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:43:16,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:16,914 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 1 equivalence classes. [2025-02-06 18:43:16,916 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 18:43:16,916 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:43:16,916 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:17,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:43:17,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:17,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224300270] [2025-02-06 18:43:17,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224300270] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:43:17,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:43:17,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-06 18:43:17,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097341978] [2025-02-06 18:43:17,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:43:17,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 18:43:17,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:17,043 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 18:43:17,043 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-02-06 18:43:17,057 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2025-02-06 18:43:17,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 34 transitions, 256 flow. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 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) [2025-02-06 18:43:17,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:17,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2025-02-06 18:43:17,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:17,171 INFO L124 PetriNetUnfolderBase]: 4/34 cut-off events. [2025-02-06 18:43:17,171 INFO L125 PetriNetUnfolderBase]: For 113/113 co-relation queries the response was YES. [2025-02-06 18:43:17,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 34 events. 4/34 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 46 event pairs, 0 based on Foata normal form. 2/36 useless extension candidates. Maximal degree in co-relation 160. Up to 8 conditions per place. [2025-02-06 18:43:17,171 INFO L140 encePairwiseOnDemand]: 12/21 looper letters, 8 selfloop transitions, 4 changer transitions 19/33 dead transitions. [2025-02-06 18:43:17,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 33 transitions, 304 flow [2025-02-06 18:43:17,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-06 18:43:17,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-02-06 18:43:17,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 68 transitions. [2025-02-06 18:43:17,172 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2490842490842491 [2025-02-06 18:43:17,172 INFO L175 Difference]: Start difference. First operand has 119 places, 34 transitions, 256 flow. Second operand 13 states and 68 transitions. [2025-02-06 18:43:17,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 33 transitions, 304 flow [2025-02-06 18:43:17,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 33 transitions, 219 flow, removed 1 selfloop flow, removed 24 redundant places. [2025-02-06 18:43:17,173 INFO L231 Difference]: Finished difference. Result has 68 places, 14 transitions, 71 flow [2025-02-06 18:43:17,173 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=71, PETRI_PLACES=68, PETRI_TRANSITIONS=14} [2025-02-06 18:43:17,173 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 44 predicate places. [2025-02-06 18:43:17,173 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 14 transitions, 71 flow [2025-02-06 18:43:17,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 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) [2025-02-06 18:43:17,174 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:17,174 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:43:17,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-02-06 18:43:17,174 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 18:43:17,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:17,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1415908478, now seen corresponding path program 1 times [2025-02-06 18:43:17,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:17,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727945564] [2025-02-06 18:43:17,174 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:43:17,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:17,179 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-06 18:43:17,181 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-06 18:43:17,181 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:43:17,181 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:17,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:43:17,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:17,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727945564] [2025-02-06 18:43:17,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727945564] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:43:17,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:43:17,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-06 18:43:17,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834323920] [2025-02-06 18:43:17,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:43:17,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 18:43:17,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:17,304 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 18:43:17,304 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-02-06 18:43:17,316 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2025-02-06 18:43:17,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 14 transitions, 71 flow. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:43:17,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:17,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2025-02-06 18:43:17,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:17,366 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2025-02-06 18:43:17,366 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2025-02-06 18:43:17,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 13 events. 0/13 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 1/14 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2025-02-06 18:43:17,366 INFO L140 encePairwiseOnDemand]: 13/21 looper letters, 0 selfloop transitions, 0 changer transitions 13/13 dead transitions. [2025-02-06 18:43:17,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 13 transitions, 89 flow [2025-02-06 18:43:17,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 18:43:17,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-06 18:43:17,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 39 transitions. [2025-02-06 18:43:17,367 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.20634920634920634 [2025-02-06 18:43:17,367 INFO L175 Difference]: Start difference. First operand has 68 places, 14 transitions, 71 flow. Second operand 9 states and 39 transitions. [2025-02-06 18:43:17,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 13 transitions, 89 flow [2025-02-06 18:43:17,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 13 transitions, 55 flow, removed 1 selfloop flow, removed 15 redundant places. [2025-02-06 18:43:17,367 INFO L231 Difference]: Finished difference. Result has 35 places, 0 transitions, 0 flow [2025-02-06 18:43:17,367 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=33, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=35, PETRI_TRANSITIONS=0} [2025-02-06 18:43:17,368 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 11 predicate places. [2025-02-06 18:43:17,368 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 0 transitions, 0 flow [2025-02-06 18:43:17,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:43:17,370 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 7 remaining) [2025-02-06 18:43:17,370 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 7 remaining) [2025-02-06 18:43:17,370 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2025-02-06 18:43:17,370 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 7 remaining) [2025-02-06 18:43:17,370 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 7 remaining) [2025-02-06 18:43:17,370 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 7 remaining) [2025-02-06 18:43:17,370 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 7 remaining) [2025-02-06 18:43:17,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-02-06 18:43:17,371 INFO L422 BasicCegarLoop]: Path program histogram: [5, 4, 4, 3, 2, 1, 1, 1, 1] [2025-02-06 18:43:17,374 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-02-06 18:43:17,374 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-06 18:43:17,377 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.02 06:43:17 BasicIcfg [2025-02-06 18:43:17,378 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-06 18:43:17,378 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-06 18:43:17,378 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-06 18:43:17,378 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-06 18:43:17,378 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:43:09" (3/4) ... [2025-02-06 18:43:17,379 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-02-06 18:43:17,382 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure t_fun [2025-02-06 18:43:17,384 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2025-02-06 18:43:17,384 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2025-02-06 18:43:17,384 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-02-06 18:43:17,428 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-06 18:43:17,429 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-02-06 18:43:17,429 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-06 18:43:17,429 INFO L158 Benchmark]: Toolchain (without parser) took 8847.85ms. Allocated memory was 142.6MB in the beginning and 268.4MB in the end (delta: 125.8MB). Free memory was 110.3MB in the beginning and 162.2MB in the end (delta: -51.8MB). Peak memory consumption was 70.2MB. Max. memory is 16.1GB. [2025-02-06 18:43:17,429 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 201.3MB. Free memory is still 125.1MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 18:43:17,430 INFO L158 Benchmark]: CACSL2BoogieTranslator took 361.69ms. Allocated memory is still 142.6MB. Free memory was 109.8MB in the beginning and 87.2MB in the end (delta: 22.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-02-06 18:43:17,430 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.12ms. Allocated memory is still 142.6MB. Free memory was 87.2MB in the beginning and 85.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 18:43:17,430 INFO L158 Benchmark]: Boogie Preprocessor took 34.22ms. Allocated memory is still 142.6MB. Free memory was 85.7MB in the beginning and 84.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 18:43:17,430 INFO L158 Benchmark]: IcfgBuilder took 349.36ms. Allocated memory is still 142.6MB. Free memory was 84.2MB in the beginning and 63.6MB in the end (delta: 20.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-02-06 18:43:17,430 INFO L158 Benchmark]: TraceAbstraction took 8017.36ms. Allocated memory was 142.6MB in the beginning and 268.4MB in the end (delta: 125.8MB). Free memory was 63.1MB in the beginning and 167.5MB in the end (delta: -104.4MB). Peak memory consumption was 19.9MB. Max. memory is 16.1GB. [2025-02-06 18:43:17,431 INFO L158 Benchmark]: Witness Printer took 50.90ms. Allocated memory is still 268.4MB. Free memory was 167.5MB in the beginning and 162.2MB in the end (delta: 5.3MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 18:43:17,431 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 201.3MB. Free memory is still 125.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 361.69ms. Allocated memory is still 142.6MB. Free memory was 109.8MB in the beginning and 87.2MB in the end (delta: 22.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.12ms. Allocated memory is still 142.6MB. Free memory was 87.2MB in the beginning and 85.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 34.22ms. Allocated memory is still 142.6MB. Free memory was 85.7MB in the beginning and 84.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 349.36ms. Allocated memory is still 142.6MB. Free memory was 84.2MB in the beginning and 63.6MB in the end (delta: 20.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 8017.36ms. Allocated memory was 142.6MB in the beginning and 268.4MB in the end (delta: 125.8MB). Free memory was 63.1MB in the beginning and 167.5MB in the end (delta: -104.4MB). Peak memory consumption was 19.9MB. Max. memory is 16.1GB. * Witness Printer took 50.90ms. Allocated memory is still 268.4MB. Free memory was 167.5MB in the beginning and 162.2MB in the end (delta: 5.3MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3001]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 3001]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 3001]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 3001]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 33 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 7.9s, OverallIterations: 22, TraceHistogramMax: 1, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 4.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 926 SdHoareTripleChecker+Valid, 2.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 842 mSDsluCounter, 1031 SdHoareTripleChecker+Invalid, 1.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 944 mSDsCounter, 96 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3679 IncrementalHoareTripleChecker+Invalid, 3775 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 96 mSolverCounterUnsat, 87 mSDtfsCounter, 3679 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 270 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 261 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 482 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1467occurred in iteration=15, InterpolantAutomatonStates: 254, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 256 NumberOfCodeBlocks, 256 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 234 ConstructedInterpolants, 0 QuantifiedInterpolants, 2623 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 22 InterpolantComputations, 22 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-02-06 18:43:17,442 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE