./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_15-list_entry_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_15-list_entry_nr.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a7843ed292ba7ad810f8623eae57d1bf23212a957c35d700b564dc03a7df5581 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 23:33:11,461 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 23:33:11,545 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-24 23:33:11,552 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 23:33:11,568 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 23:33:11,601 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 23:33:11,602 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 23:33:11,602 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 23:33:11,603 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 23:33:11,603 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 23:33:11,604 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 23:33:11,604 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 23:33:11,605 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 23:33:11,605 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 23:33:11,606 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 23:33:11,606 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 23:33:11,606 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 23:33:11,607 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 23:33:11,607 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 23:33:11,607 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 23:33:11,608 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 23:33:11,608 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 23:33:11,609 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 23:33:11,609 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 23:33:11,609 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 23:33:11,610 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-24 23:33:11,610 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 23:33:11,610 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 23:33:11,610 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 23:33:11,611 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 23:33:11,611 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 23:33:11,612 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 23:33:11,612 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 23:33:11,612 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 23:33:11,612 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 23:33:11,613 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 23:33:11,613 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 23:33:11,613 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 23:33:11,614 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 23:33:11,614 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 23:33:11,614 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 23:33:11,616 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 23:33:11,616 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 23:33:11,617 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 23:33:11,617 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a7843ed292ba7ad810f8623eae57d1bf23212a957c35d700b564dc03a7df5581 [2024-10-24 23:33:11,891 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 23:33:11,920 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 23:33:11,923 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 23:33:11,924 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 23:33:11,924 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 23:33:11,926 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_15-list_entry_nr.i [2024-10-24 23:33:13,372 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 23:33:13,708 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 23:33:13,709 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_15-list_entry_nr.i [2024-10-24 23:33:13,744 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bc45c951/e5d017fd29244575b991116c4a4c204f/FLAG488c8a9cb [2024-10-24 23:33:13,760 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bc45c951/e5d017fd29244575b991116c4a4c204f [2024-10-24 23:33:13,763 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 23:33:13,764 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 23:33:13,765 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 23:33:13,765 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 23:33:13,770 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 23:33:13,771 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:33:13" (1/1) ... [2024-10-24 23:33:13,774 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72a2b452 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:33:13, skipping insertion in model container [2024-10-24 23:33:13,774 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:33:13" (1/1) ... [2024-10-24 23:33:13,836 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 23:33:14,171 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 23:33:14,189 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 23:33:14,254 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 23:33:14,292 INFO L204 MainTranslator]: Completed translation [2024-10-24 23:33:14,293 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:33:14 WrapperNode [2024-10-24 23:33:14,293 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 23:33:14,293 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 23:33:14,293 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 23:33:14,294 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 23:33:14,300 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:33:14" (1/1) ... [2024-10-24 23:33:14,315 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:33:14" (1/1) ... [2024-10-24 23:33:14,338 INFO L138 Inliner]: procedures = 186, calls = 12, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 57 [2024-10-24 23:33:14,338 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 23:33:14,339 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 23:33:14,339 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 23:33:14,339 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 23:33:14,348 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:33:14" (1/1) ... [2024-10-24 23:33:14,348 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:33:14" (1/1) ... [2024-10-24 23:33:14,354 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:33:14" (1/1) ... [2024-10-24 23:33:14,367 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]. [2024-10-24 23:33:14,368 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:33:14" (1/1) ... [2024-10-24 23:33:14,368 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:33:14" (1/1) ... [2024-10-24 23:33:14,374 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:33:14" (1/1) ... [2024-10-24 23:33:14,375 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:33:14" (1/1) ... [2024-10-24 23:33:14,376 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:33:14" (1/1) ... [2024-10-24 23:33:14,377 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:33:14" (1/1) ... [2024-10-24 23:33:14,379 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 23:33:14,380 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 23:33:14,380 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 23:33:14,380 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 23:33:14,381 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:33:14" (1/1) ... [2024-10-24 23:33:14,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 23:33:14,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:33:14,419 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 23:33:14,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 23:33:14,464 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 23:33:14,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 23:33:14,466 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-24 23:33:14,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-24 23:33:14,466 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-24 23:33:14,466 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-24 23:33:14,467 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-24 23:33:14,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 23:33:14,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 23:33:14,469 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 23:33:14,573 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 23:33:14,575 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 23:33:14,718 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 23:33:14,718 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 23:33:14,830 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 23:33:14,830 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-24 23:33:14,831 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:33:14 BoogieIcfgContainer [2024-10-24 23:33:14,831 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 23:33:14,833 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 23:33:14,833 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 23:33:14,836 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 23:33:14,836 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:33:13" (1/3) ... [2024-10-24 23:33:14,837 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@234c4e2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:33:14, skipping insertion in model container [2024-10-24 23:33:14,837 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:33:14" (2/3) ... [2024-10-24 23:33:14,837 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@234c4e2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:33:14, skipping insertion in model container [2024-10-24 23:33:14,837 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:33:14" (3/3) ... [2024-10-24 23:33:14,838 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_15-list_entry_nr.i [2024-10-24 23:33:14,851 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 23:33:14,851 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-10-24 23:33:14,851 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 23:33:14,886 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-24 23:33:14,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 25 places, 21 transitions, 46 flow [2024-10-24 23:33:14,947 INFO L124 PetriNetUnfolderBase]: 0/20 cut-off events. [2024-10-24 23:33:14,947 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 23:33:14,949 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 4. Compared 28 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. [2024-10-24 23:33:14,949 INFO L82 GeneralOperation]: Start removeDead. Operand has 25 places, 21 transitions, 46 flow [2024-10-24 23:33:14,955 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 20 transitions, 43 flow [2024-10-24 23:33:14,963 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 23:33:14,969 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;@2eca8f0e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 23:33:14,970 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-10-24 23:33:14,976 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 23:33:14,976 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-10-24 23:33:14,976 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 23:33:14,977 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:33:14,980 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-24 23:33:14,980 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-24 23:33:14,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:33:14,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1131338283, now seen corresponding path program 1 times [2024-10-24 23:33:14,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:33:14,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964136421] [2024-10-24 23:33:14,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:14,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:33:15,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:15,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:33:15,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:33:15,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964136421] [2024-10-24 23:33:15,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964136421] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:33:15,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:33:15,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:33:15,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475008944] [2024-10-24 23:33:15,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:33:15,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 23:33:15,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:33:15,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 23:33:15,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 23:33:15,701 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 21 [2024-10-24 23:33:15,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 20 transitions, 43 flow. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:15,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:33:15,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 21 [2024-10-24 23:33:15,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:33:15,909 INFO L124 PetriNetUnfolderBase]: 52/125 cut-off events. [2024-10-24 23:33:15,909 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 23:33:15,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252 conditions, 125 events. 52/125 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 389 event pairs, 10 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 243. Up to 65 conditions per place. [2024-10-24 23:33:15,916 INFO L140 encePairwiseOnDemand]: 14/21 looper letters, 28 selfloop transitions, 8 changer transitions 2/41 dead transitions. [2024-10-24 23:33:15,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 41 transitions, 161 flow [2024-10-24 23:33:15,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 23:33:15,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 23:33:15,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 64 transitions. [2024-10-24 23:33:15,926 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5079365079365079 [2024-10-24 23:33:15,927 INFO L175 Difference]: Start difference. First operand has 24 places, 20 transitions, 43 flow. Second operand 6 states and 64 transitions. [2024-10-24 23:33:15,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 41 transitions, 161 flow [2024-10-24 23:33:15,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 41 transitions, 160 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:33:15,934 INFO L231 Difference]: Finished difference. Result has 33 places, 25 transitions, 94 flow [2024-10-24 23:33:15,936 INFO L260 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=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=94, PETRI_PLACES=33, PETRI_TRANSITIONS=25} [2024-10-24 23:33:15,938 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 9 predicate places. [2024-10-24 23:33:15,939 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 25 transitions, 94 flow [2024-10-24 23:33:15,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:15,939 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:33:15,939 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-24 23:33:15,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 23:33:15,940 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-24 23:33:15,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:33:15,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1131858609, now seen corresponding path program 1 times [2024-10-24 23:33:15,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:33:15,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124677199] [2024-10-24 23:33:15,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:15,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:33:15,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:16,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:33:16,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:33:16,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124677199] [2024-10-24 23:33:16,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124677199] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:33:16,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:33:16,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:33:16,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625349707] [2024-10-24 23:33:16,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:33:16,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 23:33:16,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:33:16,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 23:33:16,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 23:33:16,113 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 21 [2024-10-24 23:33:16,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 25 transitions, 94 flow. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:16,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:33:16,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 21 [2024-10-24 23:33:16,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:33:16,295 INFO L124 PetriNetUnfolderBase]: 42/117 cut-off events. [2024-10-24 23:33:16,296 INFO L125 PetriNetUnfolderBase]: For 68/72 co-relation queries the response was YES. [2024-10-24 23:33:16,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 297 conditions, 117 events. 42/117 cut-off events. For 68/72 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 413 event pairs, 6 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 282. Up to 49 conditions per place. [2024-10-24 23:33:16,301 INFO L140 encePairwiseOnDemand]: 14/21 looper letters, 28 selfloop transitions, 10 changer transitions 0/42 dead transitions. [2024-10-24 23:33:16,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 42 transitions, 228 flow [2024-10-24 23:33:16,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 23:33:16,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 23:33:16,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 62 transitions. [2024-10-24 23:33:16,303 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49206349206349204 [2024-10-24 23:33:16,304 INFO L175 Difference]: Start difference. First operand has 33 places, 25 transitions, 94 flow. Second operand 6 states and 62 transitions. [2024-10-24 23:33:16,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 42 transitions, 228 flow [2024-10-24 23:33:16,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 42 transitions, 228 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 23:33:16,308 INFO L231 Difference]: Finished difference. Result has 43 places, 30 transitions, 162 flow [2024-10-24 23:33:16,308 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=162, PETRI_PLACES=43, PETRI_TRANSITIONS=30} [2024-10-24 23:33:16,309 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 19 predicate places. [2024-10-24 23:33:16,309 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 30 transitions, 162 flow [2024-10-24 23:33:16,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:16,310 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:33:16,310 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:33:16,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 23:33:16,311 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-24 23:33:16,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:33:16,313 INFO L85 PathProgramCache]: Analyzing trace with hash 727878704, now seen corresponding path program 1 times [2024-10-24 23:33:16,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:33:16,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696830367] [2024-10-24 23:33:16,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:16,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:33:16,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:16,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:33:16,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:33:16,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696830367] [2024-10-24 23:33:16,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696830367] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:33:16,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:33:16,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:33:16,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516351073] [2024-10-24 23:33:16,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:33:16,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 23:33:16,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:33:16,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 23:33:16,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 23:33:16,495 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 21 [2024-10-24 23:33:16,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 30 transitions, 162 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) [2024-10-24 23:33:16,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:33:16,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 21 [2024-10-24 23:33:16,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:33:16,638 INFO L124 PetriNetUnfolderBase]: 29/100 cut-off events. [2024-10-24 23:33:16,638 INFO L125 PetriNetUnfolderBase]: For 116/120 co-relation queries the response was YES. [2024-10-24 23:33:16,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 305 conditions, 100 events. 29/100 cut-off events. For 116/120 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 358 event pairs, 6 based on Foata normal form. 9/109 useless extension candidates. Maximal degree in co-relation 283. Up to 49 conditions per place. [2024-10-24 23:33:16,640 INFO L140 encePairwiseOnDemand]: 14/21 looper letters, 24 selfloop transitions, 9 changer transitions 1/40 dead transitions. [2024-10-24 23:33:16,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 40 transitions, 266 flow [2024-10-24 23:33:16,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 23:33:16,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 23:33:16,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 64 transitions. [2024-10-24 23:33:16,641 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5079365079365079 [2024-10-24 23:33:16,641 INFO L175 Difference]: Start difference. First operand has 43 places, 30 transitions, 162 flow. Second operand 6 states and 64 transitions. [2024-10-24 23:33:16,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 40 transitions, 266 flow [2024-10-24 23:33:16,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 40 transitions, 266 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 23:33:16,645 INFO L231 Difference]: Finished difference. Result has 50 places, 29 transitions, 179 flow [2024-10-24 23:33:16,645 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=179, PETRI_PLACES=50, PETRI_TRANSITIONS=29} [2024-10-24 23:33:16,646 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 26 predicate places. [2024-10-24 23:33:16,646 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 29 transitions, 179 flow [2024-10-24 23:33:16,648 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) [2024-10-24 23:33:16,648 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:33:16,648 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:33:16,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 23:33:16,648 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-24 23:33:16,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:33:16,649 INFO L85 PathProgramCache]: Analyzing trace with hash 711748585, now seen corresponding path program 1 times [2024-10-24 23:33:16,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:33:16,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61049344] [2024-10-24 23:33:16,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:16,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:33:16,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:16,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:33:16,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:33:16,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61049344] [2024-10-24 23:33:16,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61049344] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:33:16,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:33:16,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:33:16,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445419780] [2024-10-24 23:33:16,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:33:16,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 23:33:16,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:33:16,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 23:33:16,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 23:33:16,820 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 21 [2024-10-24 23:33:16,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 29 transitions, 179 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) [2024-10-24 23:33:16,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:33:16,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 21 [2024-10-24 23:33:16,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:33:16,942 INFO L124 PetriNetUnfolderBase]: 29/96 cut-off events. [2024-10-24 23:33:16,943 INFO L125 PetriNetUnfolderBase]: For 202/206 co-relation queries the response was YES. [2024-10-24 23:33:16,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 326 conditions, 96 events. 29/96 cut-off events. For 202/206 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 322 event pairs, 8 based on Foata normal form. 9/105 useless extension candidates. Maximal degree in co-relation 300. Up to 51 conditions per place. [2024-10-24 23:33:16,944 INFO L140 encePairwiseOnDemand]: 15/21 looper letters, 22 selfloop transitions, 7 changer transitions 4/39 dead transitions. [2024-10-24 23:33:16,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 39 transitions, 291 flow [2024-10-24 23:33:16,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 23:33:16,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 23:33:16,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 64 transitions. [2024-10-24 23:33:16,946 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5079365079365079 [2024-10-24 23:33:16,946 INFO L175 Difference]: Start difference. First operand has 50 places, 29 transitions, 179 flow. Second operand 6 states and 64 transitions. [2024-10-24 23:33:16,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 39 transitions, 291 flow [2024-10-24 23:33:16,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 39 transitions, 259 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-10-24 23:33:16,952 INFO L231 Difference]: Finished difference. Result has 51 places, 28 transitions, 167 flow [2024-10-24 23:33:16,953 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=167, PETRI_PLACES=51, PETRI_TRANSITIONS=28} [2024-10-24 23:33:16,953 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 27 predicate places. [2024-10-24 23:33:16,954 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 28 transitions, 167 flow [2024-10-24 23:33:16,954 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) [2024-10-24 23:33:16,955 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:33:16,955 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:33:16,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 23:33:16,956 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-24 23:33:16,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:33:16,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1626266277, now seen corresponding path program 1 times [2024-10-24 23:33:16,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:33:16,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271648393] [2024-10-24 23:33:16,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:16,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:33:16,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:17,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:33:17,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:33:17,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271648393] [2024-10-24 23:33:17,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271648393] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:33:17,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:33:17,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 23:33:17,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463240374] [2024-10-24 23:33:17,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:33:17,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 23:33:17,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:33:17,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 23:33:17,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 23:33:17,112 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 21 [2024-10-24 23:33:17,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 28 transitions, 167 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) [2024-10-24 23:33:17,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:33:17,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 21 [2024-10-24 23:33:17,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:33:17,206 INFO L124 PetriNetUnfolderBase]: 25/90 cut-off events. [2024-10-24 23:33:17,206 INFO L125 PetriNetUnfolderBase]: For 171/176 co-relation queries the response was YES. [2024-10-24 23:33:17,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 309 conditions, 90 events. 25/90 cut-off events. For 171/176 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 337 event pairs, 1 based on Foata normal form. 7/97 useless extension candidates. Maximal degree in co-relation 291. Up to 27 conditions per place. [2024-10-24 23:33:17,207 INFO L140 encePairwiseOnDemand]: 14/21 looper letters, 30 selfloop transitions, 9 changer transitions 0/47 dead transitions. [2024-10-24 23:33:17,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 47 transitions, 346 flow [2024-10-24 23:33:17,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 23:33:17,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 23:33:17,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 66 transitions. [2024-10-24 23:33:17,208 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6285714285714286 [2024-10-24 23:33:17,209 INFO L175 Difference]: Start difference. First operand has 51 places, 28 transitions, 167 flow. Second operand 5 states and 66 transitions. [2024-10-24 23:33:17,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 47 transitions, 346 flow [2024-10-24 23:33:17,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 47 transitions, 315 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-10-24 23:33:17,211 INFO L231 Difference]: Finished difference. Result has 50 places, 32 transitions, 196 flow [2024-10-24 23:33:17,212 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=196, PETRI_PLACES=50, PETRI_TRANSITIONS=32} [2024-10-24 23:33:17,212 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 26 predicate places. [2024-10-24 23:33:17,212 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 32 transitions, 196 flow [2024-10-24 23:33:17,213 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) [2024-10-24 23:33:17,213 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:33:17,213 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:33:17,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 23:33:17,213 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-24 23:33:17,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:33:17,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1815838693, now seen corresponding path program 2 times [2024-10-24 23:33:17,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:33:17,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917661673] [2024-10-24 23:33:17,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:17,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:33:17,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:17,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:33:17,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:33:17,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917661673] [2024-10-24 23:33:17,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917661673] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:33:17,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:33:17,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 23:33:17,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002746149] [2024-10-24 23:33:17,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:33:17,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 23:33:17,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:33:17,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 23:33:17,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 23:33:17,353 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 21 [2024-10-24 23:33:17,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 32 transitions, 196 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) [2024-10-24 23:33:17,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:33:17,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 21 [2024-10-24 23:33:17,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:33:17,454 INFO L124 PetriNetUnfolderBase]: 25/104 cut-off events. [2024-10-24 23:33:17,454 INFO L125 PetriNetUnfolderBase]: For 176/180 co-relation queries the response was YES. [2024-10-24 23:33:17,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 385 conditions, 104 events. 25/104 cut-off events. For 176/180 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 424 event pairs, 0 based on Foata normal form. 7/111 useless extension candidates. Maximal degree in co-relation 360. Up to 31 conditions per place. [2024-10-24 23:33:17,456 INFO L140 encePairwiseOnDemand]: 14/21 looper letters, 31 selfloop transitions, 12 changer transitions 0/51 dead transitions. [2024-10-24 23:33:17,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 51 transitions, 396 flow [2024-10-24 23:33:17,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 23:33:17,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 23:33:17,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 66 transitions. [2024-10-24 23:33:17,459 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6285714285714286 [2024-10-24 23:33:17,459 INFO L175 Difference]: Start difference. First operand has 50 places, 32 transitions, 196 flow. Second operand 5 states and 66 transitions. [2024-10-24 23:33:17,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 51 transitions, 396 flow [2024-10-24 23:33:17,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 51 transitions, 370 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 23:33:17,464 INFO L231 Difference]: Finished difference. Result has 54 places, 36 transitions, 245 flow [2024-10-24 23:33:17,465 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=245, PETRI_PLACES=54, PETRI_TRANSITIONS=36} [2024-10-24 23:33:17,466 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 30 predicate places. [2024-10-24 23:33:17,467 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 36 transitions, 245 flow [2024-10-24 23:33:17,467 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) [2024-10-24 23:33:17,467 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:33:17,468 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:33:17,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 23:33:17,468 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-24 23:33:17,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:33:17,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1048367826, now seen corresponding path program 1 times [2024-10-24 23:33:17,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:33:17,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436357795] [2024-10-24 23:33:17,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:17,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:33:17,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:17,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:33:17,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:33:17,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436357795] [2024-10-24 23:33:17,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436357795] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:33:17,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:33:17,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 23:33:17,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656723993] [2024-10-24 23:33:17,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:33:17,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 23:33:17,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:33:17,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 23:33:17,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 23:33:17,644 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 21 [2024-10-24 23:33:17,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 36 transitions, 245 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) [2024-10-24 23:33:17,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:33:17,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 21 [2024-10-24 23:33:17,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:33:17,753 INFO L124 PetriNetUnfolderBase]: 30/131 cut-off events. [2024-10-24 23:33:17,753 INFO L125 PetriNetUnfolderBase]: For 298/303 co-relation queries the response was YES. [2024-10-24 23:33:17,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 509 conditions, 131 events. 30/131 cut-off events. For 298/303 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 602 event pairs, 11 based on Foata normal form. 10/141 useless extension candidates. Maximal degree in co-relation 482. Up to 57 conditions per place. [2024-10-24 23:33:17,756 INFO L140 encePairwiseOnDemand]: 13/21 looper letters, 34 selfloop transitions, 17 changer transitions 0/59 dead transitions. [2024-10-24 23:33:17,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 59 transitions, 493 flow [2024-10-24 23:33:17,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 23:33:17,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 23:33:17,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 72 transitions. [2024-10-24 23:33:17,758 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6857142857142857 [2024-10-24 23:33:17,758 INFO L175 Difference]: Start difference. First operand has 54 places, 36 transitions, 245 flow. Second operand 5 states and 72 transitions. [2024-10-24 23:33:17,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 59 transitions, 493 flow [2024-10-24 23:33:17,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 59 transitions, 462 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-10-24 23:33:17,761 INFO L231 Difference]: Finished difference. Result has 59 places, 46 transitions, 355 flow [2024-10-24 23:33:17,761 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=355, PETRI_PLACES=59, PETRI_TRANSITIONS=46} [2024-10-24 23:33:17,762 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 35 predicate places. [2024-10-24 23:33:17,762 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 46 transitions, 355 flow [2024-10-24 23:33:17,762 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) [2024-10-24 23:33:17,762 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:33:17,763 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:33:17,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 23:33:17,763 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-24 23:33:17,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:33:17,763 INFO L85 PathProgramCache]: Analyzing trace with hash -810735161, now seen corresponding path program 3 times [2024-10-24 23:33:17,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:33:17,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365234080] [2024-10-24 23:33:17,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:17,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:33:17,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:17,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:33:17,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:33:17,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365234080] [2024-10-24 23:33:17,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365234080] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:33:17,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:33:17,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 23:33:17,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884670777] [2024-10-24 23:33:17,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:33:17,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 23:33:17,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:33:17,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 23:33:17,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 23:33:17,912 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 21 [2024-10-24 23:33:17,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 46 transitions, 355 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) [2024-10-24 23:33:17,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:33:17,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 21 [2024-10-24 23:33:17,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:33:18,010 INFO L124 PetriNetUnfolderBase]: 20/96 cut-off events. [2024-10-24 23:33:18,012 INFO L125 PetriNetUnfolderBase]: For 355/359 co-relation queries the response was YES. [2024-10-24 23:33:18,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 449 conditions, 96 events. 20/96 cut-off events. For 355/359 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 366 event pairs, 0 based on Foata normal form. 10/106 useless extension candidates. Maximal degree in co-relation 419. Up to 34 conditions per place. [2024-10-24 23:33:18,013 INFO L140 encePairwiseOnDemand]: 13/21 looper letters, 35 selfloop transitions, 21 changer transitions 0/64 dead transitions. [2024-10-24 23:33:18,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 64 transitions, 606 flow [2024-10-24 23:33:18,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 23:33:18,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 23:33:18,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 72 transitions. [2024-10-24 23:33:18,016 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6857142857142857 [2024-10-24 23:33:18,016 INFO L175 Difference]: Start difference. First operand has 59 places, 46 transitions, 355 flow. Second operand 5 states and 72 transitions. [2024-10-24 23:33:18,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 64 transitions, 606 flow [2024-10-24 23:33:18,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 64 transitions, 577 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-10-24 23:33:18,019 INFO L231 Difference]: Finished difference. Result has 65 places, 54 transitions, 483 flow [2024-10-24 23:33:18,019 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=483, PETRI_PLACES=65, PETRI_TRANSITIONS=54} [2024-10-24 23:33:18,020 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 41 predicate places. [2024-10-24 23:33:18,020 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 54 transitions, 483 flow [2024-10-24 23:33:18,020 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) [2024-10-24 23:33:18,021 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:33:18,021 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:33:18,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 23:33:18,021 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-24 23:33:18,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:33:18,022 INFO L85 PathProgramCache]: Analyzing trace with hash 520618547, now seen corresponding path program 1 times [2024-10-24 23:33:18,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:33:18,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482677265] [2024-10-24 23:33:18,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:18,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:33:18,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:18,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:33:18,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:33:18,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482677265] [2024-10-24 23:33:18,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482677265] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:33:18,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:33:18,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 23:33:18,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673220444] [2024-10-24 23:33:18,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:33:18,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 23:33:18,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:33:18,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 23:33:18,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-24 23:33:18,409 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2024-10-24 23:33:18,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 54 transitions, 483 flow. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:18,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:33:18,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2024-10-24 23:33:18,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:33:18,604 INFO L124 PetriNetUnfolderBase]: 29/110 cut-off events. [2024-10-24 23:33:18,605 INFO L125 PetriNetUnfolderBase]: For 529/531 co-relation queries the response was YES. [2024-10-24 23:33:18,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 586 conditions, 110 events. 29/110 cut-off events. For 529/531 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 401 event pairs, 2 based on Foata normal form. 4/114 useless extension candidates. Maximal degree in co-relation 553. Up to 55 conditions per place. [2024-10-24 23:33:18,606 INFO L140 encePairwiseOnDemand]: 11/21 looper letters, 50 selfloop transitions, 22 changer transitions 0/74 dead transitions. [2024-10-24 23:33:18,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 74 transitions, 797 flow [2024-10-24 23:33:18,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 23:33:18,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-24 23:33:18,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 64 transitions. [2024-10-24 23:33:18,608 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3386243386243386 [2024-10-24 23:33:18,609 INFO L175 Difference]: Start difference. First operand has 65 places, 54 transitions, 483 flow. Second operand 9 states and 64 transitions. [2024-10-24 23:33:18,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 74 transitions, 797 flow [2024-10-24 23:33:18,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 74 transitions, 761 flow, removed 18 selfloop flow, removed 0 redundant places. [2024-10-24 23:33:18,613 INFO L231 Difference]: Finished difference. Result has 77 places, 63 transitions, 616 flow [2024-10-24 23:33:18,613 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=616, PETRI_PLACES=77, PETRI_TRANSITIONS=63} [2024-10-24 23:33:18,614 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 53 predicate places. [2024-10-24 23:33:18,614 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 63 transitions, 616 flow [2024-10-24 23:33:18,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:18,614 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:33:18,615 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:33:18,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 23:33:18,615 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-24 23:33:18,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:33:18,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1289756849, now seen corresponding path program 2 times [2024-10-24 23:33:18,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:33:18,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176336978] [2024-10-24 23:33:18,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:18,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:33:18,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:18,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:33:18,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:33:18,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176336978] [2024-10-24 23:33:18,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176336978] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:33:18,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:33:18,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 23:33:18,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935534588] [2024-10-24 23:33:18,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:33:18,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 23:33:18,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:33:18,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 23:33:18,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-24 23:33:18,913 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2024-10-24 23:33:18,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 63 transitions, 616 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) [2024-10-24 23:33:18,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:33:18,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2024-10-24 23:33:18,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:33:19,188 INFO L124 PetriNetUnfolderBase]: 32/126 cut-off events. [2024-10-24 23:33:19,188 INFO L125 PetriNetUnfolderBase]: For 724/726 co-relation queries the response was YES. [2024-10-24 23:33:19,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 698 conditions, 126 events. 32/126 cut-off events. For 724/726 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 515 event pairs, 0 based on Foata normal form. 4/130 useless extension candidates. Maximal degree in co-relation 659. Up to 35 conditions per place. [2024-10-24 23:33:19,189 INFO L140 encePairwiseOnDemand]: 11/21 looper letters, 53 selfloop transitions, 35 changer transitions 0/90 dead transitions. [2024-10-24 23:33:19,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 90 transitions, 1017 flow [2024-10-24 23:33:19,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-24 23:33:19,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-24 23:33:19,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 70 transitions. [2024-10-24 23:33:19,191 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2777777777777778 [2024-10-24 23:33:19,191 INFO L175 Difference]: Start difference. First operand has 77 places, 63 transitions, 616 flow. Second operand 12 states and 70 transitions. [2024-10-24 23:33:19,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 90 transitions, 1017 flow [2024-10-24 23:33:19,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 90 transitions, 1003 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-10-24 23:33:19,197 INFO L231 Difference]: Finished difference. Result has 94 places, 77 transitions, 863 flow [2024-10-24 23:33:19,197 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=609, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=863, PETRI_PLACES=94, PETRI_TRANSITIONS=77} [2024-10-24 23:33:19,197 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 70 predicate places. [2024-10-24 23:33:19,198 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 77 transitions, 863 flow [2024-10-24 23:33:19,198 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) [2024-10-24 23:33:19,198 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:33:19,198 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:33:19,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 23:33:19,199 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-24 23:33:19,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:33:19,199 INFO L85 PathProgramCache]: Analyzing trace with hash 2108195451, now seen corresponding path program 3 times [2024-10-24 23:33:19,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:33:19,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68855692] [2024-10-24 23:33:19,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:19,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:33:19,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:19,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:33:19,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:33:19,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68855692] [2024-10-24 23:33:19,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68855692] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:33:19,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:33:19,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 23:33:19,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881103530] [2024-10-24 23:33:19,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:33:19,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 23:33:19,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:33:19,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 23:33:19,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-10-24 23:33:19,467 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2024-10-24 23:33:19,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 77 transitions, 863 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) [2024-10-24 23:33:19,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:33:19,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2024-10-24 23:33:19,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:33:19,752 INFO L124 PetriNetUnfolderBase]: 35/140 cut-off events. [2024-10-24 23:33:19,753 INFO L125 PetriNetUnfolderBase]: For 1042/1043 co-relation queries the response was YES. [2024-10-24 23:33:19,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 873 conditions, 140 events. 35/140 cut-off events. For 1042/1043 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 599 event pairs, 2 based on Foata normal form. 2/142 useless extension candidates. Maximal degree in co-relation 826. Up to 70 conditions per place. [2024-10-24 23:33:19,754 INFO L140 encePairwiseOnDemand]: 11/21 looper letters, 67 selfloop transitions, 31 changer transitions 0/100 dead transitions. [2024-10-24 23:33:19,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 100 transitions, 1263 flow [2024-10-24 23:33:19,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 23:33:19,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-24 23:33:19,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 82 transitions. [2024-10-24 23:33:19,755 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2789115646258503 [2024-10-24 23:33:19,755 INFO L175 Difference]: Start difference. First operand has 94 places, 77 transitions, 863 flow. Second operand 14 states and 82 transitions. [2024-10-24 23:33:19,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 100 transitions, 1263 flow [2024-10-24 23:33:19,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 100 transitions, 1248 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-24 23:33:19,762 INFO L231 Difference]: Finished difference. Result has 111 places, 88 transitions, 1071 flow [2024-10-24 23:33:19,763 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=849, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1071, PETRI_PLACES=111, PETRI_TRANSITIONS=88} [2024-10-24 23:33:19,763 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 87 predicate places. [2024-10-24 23:33:19,763 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 88 transitions, 1071 flow [2024-10-24 23:33:19,764 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) [2024-10-24 23:33:19,764 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:33:19,764 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:33:19,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-24 23:33:19,764 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-24 23:33:19,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:33:19,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1964273757, now seen corresponding path program 1 times [2024-10-24 23:33:19,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:33:19,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836338112] [2024-10-24 23:33:19,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:19,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:33:19,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:20,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:33:20,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:33:20,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836338112] [2024-10-24 23:33:20,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836338112] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:33:20,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:33:20,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 23:33:20,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938991084] [2024-10-24 23:33:20,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:33:20,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 23:33:20,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:33:20,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 23:33:20,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-24 23:33:20,032 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2024-10-24 23:33:20,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 88 transitions, 1071 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) [2024-10-24 23:33:20,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:33:20,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2024-10-24 23:33:20,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:33:20,293 INFO L124 PetriNetUnfolderBase]: 40/158 cut-off events. [2024-10-24 23:33:20,293 INFO L125 PetriNetUnfolderBase]: For 1395/1395 co-relation queries the response was YES. [2024-10-24 23:33:20,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1018 conditions, 158 events. 40/158 cut-off events. For 1395/1395 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 728 event pairs, 4 based on Foata normal form. 2/160 useless extension candidates. Maximal degree in co-relation 964. Up to 62 conditions per place. [2024-10-24 23:33:20,295 INFO L140 encePairwiseOnDemand]: 11/21 looper letters, 67 selfloop transitions, 35 changer transitions 0/112 dead transitions. [2024-10-24 23:33:20,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 112 transitions, 1445 flow [2024-10-24 23:33:20,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-24 23:33:20,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-24 23:33:20,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 70 transitions. [2024-10-24 23:33:20,297 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2777777777777778 [2024-10-24 23:33:20,297 INFO L175 Difference]: Start difference. First operand has 111 places, 88 transitions, 1071 flow. Second operand 12 states and 70 transitions. [2024-10-24 23:33:20,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 112 transitions, 1445 flow [2024-10-24 23:33:20,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 112 transitions, 1388 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-10-24 23:33:20,307 INFO L231 Difference]: Finished difference. Result has 124 places, 100 transitions, 1225 flow [2024-10-24 23:33:20,307 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=1016, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1225, PETRI_PLACES=124, PETRI_TRANSITIONS=100} [2024-10-24 23:33:20,308 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 100 predicate places. [2024-10-24 23:33:20,308 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 100 transitions, 1225 flow [2024-10-24 23:33:20,308 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) [2024-10-24 23:33:20,308 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:33:20,308 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:33:20,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-24 23:33:20,309 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-24 23:33:20,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:33:20,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1554974075, now seen corresponding path program 2 times [2024-10-24 23:33:20,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:33:20,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406050356] [2024-10-24 23:33:20,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:20,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:33:20,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:20,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:33:20,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:33:20,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406050356] [2024-10-24 23:33:20,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406050356] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:33:20,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:33:20,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 23:33:20,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069650806] [2024-10-24 23:33:20,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:33:20,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 23:33:20,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:33:20,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 23:33:20,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-24 23:33:20,537 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2024-10-24 23:33:20,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 100 transitions, 1225 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) [2024-10-24 23:33:20,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:33:20,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2024-10-24 23:33:20,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:33:20,798 INFO L124 PetriNetUnfolderBase]: 43/172 cut-off events. [2024-10-24 23:33:20,798 INFO L125 PetriNetUnfolderBase]: For 1612/1612 co-relation queries the response was YES. [2024-10-24 23:33:20,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1152 conditions, 172 events. 43/172 cut-off events. For 1612/1612 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 823 event pairs, 4 based on Foata normal form. 2/174 useless extension candidates. Maximal degree in co-relation 1092. Up to 97 conditions per place. [2024-10-24 23:33:20,801 INFO L140 encePairwiseOnDemand]: 11/21 looper letters, 80 selfloop transitions, 31 changer transitions 0/121 dead transitions. [2024-10-24 23:33:20,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 121 transitions, 1618 flow [2024-10-24 23:33:20,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 23:33:20,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-24 23:33:20,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 82 transitions. [2024-10-24 23:33:20,802 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2789115646258503 [2024-10-24 23:33:20,802 INFO L175 Difference]: Start difference. First operand has 124 places, 100 transitions, 1225 flow. Second operand 14 states and 82 transitions. [2024-10-24 23:33:20,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 121 transitions, 1618 flow [2024-10-24 23:33:20,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 121 transitions, 1609 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-10-24 23:33:20,814 INFO L231 Difference]: Finished difference. Result has 141 places, 109 transitions, 1397 flow [2024-10-24 23:33:20,815 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=1216, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1397, PETRI_PLACES=141, PETRI_TRANSITIONS=109} [2024-10-24 23:33:20,815 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 117 predicate places. [2024-10-24 23:33:20,815 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 109 transitions, 1397 flow [2024-10-24 23:33:20,816 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) [2024-10-24 23:33:20,816 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:33:20,816 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:33:20,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-24 23:33:20,816 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-24 23:33:20,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:33:20,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1479022213, now seen corresponding path program 4 times [2024-10-24 23:33:20,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:33:20,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912357701] [2024-10-24 23:33:20,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:20,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:33:20,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:21,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:33:21,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:33:21,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912357701] [2024-10-24 23:33:21,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912357701] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:33:21,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:33:21,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 23:33:21,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046995971] [2024-10-24 23:33:21,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:33:21,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 23:33:21,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:33:21,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 23:33:21,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-24 23:33:21,094 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2024-10-24 23:33:21,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 109 transitions, 1397 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) [2024-10-24 23:33:21,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:33:21,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2024-10-24 23:33:21,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:33:21,340 INFO L124 PetriNetUnfolderBase]: 41/174 cut-off events. [2024-10-24 23:33:21,340 INFO L125 PetriNetUnfolderBase]: For 1971/1971 co-relation queries the response was YES. [2024-10-24 23:33:21,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1240 conditions, 174 events. 41/174 cut-off events. For 1971/1971 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 865 event pairs, 1 based on Foata normal form. 2/175 useless extension candidates. Maximal degree in co-relation 1174. Up to 81 conditions per place. [2024-10-24 23:33:21,342 INFO L140 encePairwiseOnDemand]: 11/21 looper letters, 71 selfloop transitions, 48 changer transitions 0/127 dead transitions. [2024-10-24 23:33:21,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 127 transitions, 1799 flow [2024-10-24 23:33:21,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 23:33:21,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-24 23:33:21,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 80 transitions. [2024-10-24 23:33:21,344 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.272108843537415 [2024-10-24 23:33:21,344 INFO L175 Difference]: Start difference. First operand has 141 places, 109 transitions, 1397 flow. Second operand 14 states and 80 transitions. [2024-10-24 23:33:21,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 127 transitions, 1799 flow [2024-10-24 23:33:21,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 127 transitions, 1753 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-10-24 23:33:21,362 INFO L231 Difference]: Finished difference. Result has 153 places, 115 transitions, 1546 flow [2024-10-24 23:33:21,364 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=1351, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1546, PETRI_PLACES=153, PETRI_TRANSITIONS=115} [2024-10-24 23:33:21,364 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 129 predicate places. [2024-10-24 23:33:21,364 INFO L471 AbstractCegarLoop]: Abstraction has has 153 places, 115 transitions, 1546 flow [2024-10-24 23:33:21,365 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) [2024-10-24 23:33:21,365 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:33:21,365 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:33:21,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-24 23:33:21,366 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-24 23:33:21,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:33:21,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1123800711, now seen corresponding path program 3 times [2024-10-24 23:33:21,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:33:21,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693229721] [2024-10-24 23:33:21,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:21,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:33:21,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:21,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:33:21,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:33:21,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693229721] [2024-10-24 23:33:21,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693229721] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:33:21,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:33:21,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 23:33:21,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441453262] [2024-10-24 23:33:21,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:33:21,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 23:33:21,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:33:21,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 23:33:21,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-24 23:33:21,707 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2024-10-24 23:33:21,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 115 transitions, 1546 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) [2024-10-24 23:33:21,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:33:21,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2024-10-24 23:33:21,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:33:21,960 INFO L124 PetriNetUnfolderBase]: 40/178 cut-off events. [2024-10-24 23:33:21,961 INFO L125 PetriNetUnfolderBase]: For 2234/2234 co-relation queries the response was YES. [2024-10-24 23:33:21,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1297 conditions, 178 events. 40/178 cut-off events. For 2234/2234 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 905 event pairs, 5 based on Foata normal form. 2/180 useless extension candidates. Maximal degree in co-relation 1228. Up to 101 conditions per place. [2024-10-24 23:33:21,963 INFO L140 encePairwiseOnDemand]: 11/21 looper letters, 85 selfloop transitions, 33 changer transitions 0/130 dead transitions. [2024-10-24 23:33:21,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 130 transitions, 1919 flow [2024-10-24 23:33:21,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-24 23:33:21,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-24 23:33:21,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 78 transitions. [2024-10-24 23:33:21,964 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2857142857142857 [2024-10-24 23:33:21,964 INFO L175 Difference]: Start difference. First operand has 153 places, 115 transitions, 1546 flow. Second operand 13 states and 78 transitions. [2024-10-24 23:33:21,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 130 transitions, 1919 flow [2024-10-24 23:33:21,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 130 transitions, 1832 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-10-24 23:33:21,979 INFO L231 Difference]: Finished difference. Result has 161 places, 120 transitions, 1603 flow [2024-10-24 23:33:21,980 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=1459, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1603, PETRI_PLACES=161, PETRI_TRANSITIONS=120} [2024-10-24 23:33:21,980 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 137 predicate places. [2024-10-24 23:33:21,980 INFO L471 AbstractCegarLoop]: Abstraction has has 161 places, 120 transitions, 1603 flow [2024-10-24 23:33:21,981 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) [2024-10-24 23:33:21,981 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:33:21,981 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:33:21,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-24 23:33:21,981 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-24 23:33:21,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:33:21,982 INFO L85 PathProgramCache]: Analyzing trace with hash -470548321, now seen corresponding path program 4 times [2024-10-24 23:33:21,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:33:21,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550686154] [2024-10-24 23:33:21,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:21,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:33:21,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:22,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:33:22,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:33:22,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550686154] [2024-10-24 23:33:22,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550686154] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:33:22,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:33:22,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 23:33:22,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654526537] [2024-10-24 23:33:22,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:33:22,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 23:33:22,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:33:22,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 23:33:22,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-10-24 23:33:22,200 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2024-10-24 23:33:22,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 120 transitions, 1603 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) [2024-10-24 23:33:22,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:33:22,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2024-10-24 23:33:22,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:33:22,470 INFO L124 PetriNetUnfolderBase]: 38/180 cut-off events. [2024-10-24 23:33:22,470 INFO L125 PetriNetUnfolderBase]: For 2299/2299 co-relation queries the response was YES. [2024-10-24 23:33:22,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1319 conditions, 180 events. 38/180 cut-off events. For 2299/2299 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 953 event pairs, 2 based on Foata normal form. 2/182 useless extension candidates. Maximal degree in co-relation 1249. Up to 64 conditions per place. [2024-10-24 23:33:22,472 INFO L140 encePairwiseOnDemand]: 11/21 looper letters, 77 selfloop transitions, 48 changer transitions 0/137 dead transitions. [2024-10-24 23:33:22,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 137 transitions, 2005 flow [2024-10-24 23:33:22,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-24 23:33:22,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-24 23:33:22,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 74 transitions. [2024-10-24 23:33:22,474 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.27106227106227104 [2024-10-24 23:33:22,474 INFO L175 Difference]: Start difference. First operand has 161 places, 120 transitions, 1603 flow. Second operand 13 states and 74 transitions. [2024-10-24 23:33:22,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 137 transitions, 2005 flow [2024-10-24 23:33:22,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 137 transitions, 1934 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-10-24 23:33:22,490 INFO L231 Difference]: Finished difference. Result has 169 places, 126 transitions, 1728 flow [2024-10-24 23:33:22,490 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=1534, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1728, PETRI_PLACES=169, PETRI_TRANSITIONS=126} [2024-10-24 23:33:22,490 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 145 predicate places. [2024-10-24 23:33:22,491 INFO L471 AbstractCegarLoop]: Abstraction has has 169 places, 126 transitions, 1728 flow [2024-10-24 23:33:22,491 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) [2024-10-24 23:33:22,491 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:33:22,491 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:33:22,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-24 23:33:22,492 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-24 23:33:22,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:33:22,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1014193618, now seen corresponding path program 1 times [2024-10-24 23:33:22,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:33:22,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194494199] [2024-10-24 23:33:22,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:22,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:33:22,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:22,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:33:22,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:33:22,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194494199] [2024-10-24 23:33:22,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194494199] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:33:22,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:33:22,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 23:33:22,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452742300] [2024-10-24 23:33:22,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:33:22,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 23:33:22,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:33:22,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 23:33:22,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-10-24 23:33:22,725 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2024-10-24 23:33:22,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 126 transitions, 1728 flow. Second operand has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:22,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:33:22,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2024-10-24 23:33:22,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:33:22,979 INFO L124 PetriNetUnfolderBase]: 38/179 cut-off events. [2024-10-24 23:33:22,979 INFO L125 PetriNetUnfolderBase]: For 2361/2361 co-relation queries the response was YES. [2024-10-24 23:33:22,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1345 conditions, 179 events. 38/179 cut-off events. For 2361/2361 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 935 event pairs, 2 based on Foata normal form. 1/180 useless extension candidates. Maximal degree in co-relation 1273. Up to 64 conditions per place. [2024-10-24 23:33:22,981 INFO L140 encePairwiseOnDemand]: 11/21 looper letters, 76 selfloop transitions, 49 changer transitions 0/137 dead transitions. [2024-10-24 23:33:22,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 137 transitions, 2056 flow [2024-10-24 23:33:22,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-24 23:33:22,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-24 23:33:22,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 80 transitions. [2024-10-24 23:33:22,982 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.25396825396825395 [2024-10-24 23:33:22,982 INFO L175 Difference]: Start difference. First operand has 169 places, 126 transitions, 1728 flow. Second operand 15 states and 80 transitions. [2024-10-24 23:33:22,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 137 transitions, 2056 flow [2024-10-24 23:33:22,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 137 transitions, 1932 flow, removed 17 selfloop flow, removed 16 redundant places. [2024-10-24 23:33:22,997 INFO L231 Difference]: Finished difference. Result has 166 places, 125 transitions, 1682 flow [2024-10-24 23:33:22,997 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=1584, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1682, PETRI_PLACES=166, PETRI_TRANSITIONS=125} [2024-10-24 23:33:22,998 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 142 predicate places. [2024-10-24 23:33:22,998 INFO L471 AbstractCegarLoop]: Abstraction has has 166 places, 125 transitions, 1682 flow [2024-10-24 23:33:22,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:22,998 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:33:22,998 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:33:22,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-24 23:33:22,999 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-24 23:33:22,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:33:22,999 INFO L85 PathProgramCache]: Analyzing trace with hash 929549734, now seen corresponding path program 1 times [2024-10-24 23:33:22,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:33:22,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185069257] [2024-10-24 23:33:22,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:23,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:33:23,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:23,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:33:23,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:33:23,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185069257] [2024-10-24 23:33:23,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185069257] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:33:23,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:33:23,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 23:33:23,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707909862] [2024-10-24 23:33:23,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:33:23,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 23:33:23,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:33:23,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 23:33:23,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-10-24 23:33:23,247 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-10-24 23:33:23,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 125 transitions, 1682 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) [2024-10-24 23:33:23,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:33:23,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-10-24 23:33:23,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:33:23,516 INFO L124 PetriNetUnfolderBase]: 37/176 cut-off events. [2024-10-24 23:33:23,517 INFO L125 PetriNetUnfolderBase]: For 2261/2261 co-relation queries the response was YES. [2024-10-24 23:33:23,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1289 conditions, 176 events. 37/176 cut-off events. For 2261/2261 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 920 event pairs, 3 based on Foata normal form. 2/178 useless extension candidates. Maximal degree in co-relation 1228. Up to 110 conditions per place. [2024-10-24 23:33:23,519 INFO L140 encePairwiseOnDemand]: 11/21 looper letters, 75 selfloop transitions, 21 changer transitions 16/134 dead transitions. [2024-10-24 23:33:23,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 134 transitions, 1988 flow [2024-10-24 23:33:23,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-24 23:33:23,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-24 23:33:23,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 96 transitions. [2024-10-24 23:33:23,520 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2857142857142857 [2024-10-24 23:33:23,521 INFO L175 Difference]: Start difference. First operand has 166 places, 125 transitions, 1682 flow. Second operand 16 states and 96 transitions. [2024-10-24 23:33:23,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 134 transitions, 1988 flow [2024-10-24 23:33:23,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 134 transitions, 1897 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-10-24 23:33:23,533 INFO L231 Difference]: Finished difference. Result has 171 places, 113 transitions, 1478 flow [2024-10-24 23:33:23,534 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=1591, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1478, PETRI_PLACES=171, PETRI_TRANSITIONS=113} [2024-10-24 23:33:23,535 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 147 predicate places. [2024-10-24 23:33:23,535 INFO L471 AbstractCegarLoop]: Abstraction has has 171 places, 113 transitions, 1478 flow [2024-10-24 23:33:23,535 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) [2024-10-24 23:33:23,536 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:33:23,536 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:33:23,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-24 23:33:23,536 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-24 23:33:23,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:33:23,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1182861036, now seen corresponding path program 2 times [2024-10-24 23:33:23,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:33:23,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186133595] [2024-10-24 23:33:23,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:23,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:33:23,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:23,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:33:23,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:33:23,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186133595] [2024-10-24 23:33:23,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186133595] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:33:23,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:33:23,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 23:33:23,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086286620] [2024-10-24 23:33:23,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:33:23,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 23:33:23,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:33:23,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 23:33:23,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-24 23:33:23,784 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-10-24 23:33:23,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 113 transitions, 1478 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) [2024-10-24 23:33:23,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:33:23,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-10-24 23:33:23,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:33:24,132 INFO L124 PetriNetUnfolderBase]: 31/151 cut-off events. [2024-10-24 23:33:24,132 INFO L125 PetriNetUnfolderBase]: For 1928/1928 co-relation queries the response was YES. [2024-10-24 23:33:24,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1111 conditions, 151 events. 31/151 cut-off events. For 1928/1928 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 726 event pairs, 0 based on Foata normal form. 4/155 useless extension candidates. Maximal degree in co-relation 1055. Up to 84 conditions per place. [2024-10-24 23:33:24,134 INFO L140 encePairwiseOnDemand]: 11/21 looper letters, 58 selfloop transitions, 18 changer transitions 30/122 dead transitions. [2024-10-24 23:33:24,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 122 transitions, 1764 flow [2024-10-24 23:33:24,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-24 23:33:24,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-24 23:33:24,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 104 transitions. [2024-10-24 23:33:24,135 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2751322751322751 [2024-10-24 23:33:24,136 INFO L175 Difference]: Start difference. First operand has 171 places, 113 transitions, 1478 flow. Second operand 18 states and 104 transitions. [2024-10-24 23:33:24,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 122 transitions, 1764 flow [2024-10-24 23:33:24,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 122 transitions, 1681 flow, removed 11 selfloop flow, removed 13 redundant places. [2024-10-24 23:33:24,146 INFO L231 Difference]: Finished difference. Result has 167 places, 89 transitions, 1113 flow [2024-10-24 23:33:24,147 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=1395, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1113, PETRI_PLACES=167, PETRI_TRANSITIONS=89} [2024-10-24 23:33:24,147 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 143 predicate places. [2024-10-24 23:33:24,148 INFO L471 AbstractCegarLoop]: Abstraction has has 167 places, 89 transitions, 1113 flow [2024-10-24 23:33:24,148 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) [2024-10-24 23:33:24,148 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:33:24,148 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:33:24,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-24 23:33:24,148 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-24 23:33:24,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:33:24,149 INFO L85 PathProgramCache]: Analyzing trace with hash -2027389717, now seen corresponding path program 1 times [2024-10-24 23:33:24,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:33:24,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001999108] [2024-10-24 23:33:24,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:24,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:33:24,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:24,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:33:24,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:33:24,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001999108] [2024-10-24 23:33:24,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001999108] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:33:24,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:33:24,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 23:33:24,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969140024] [2024-10-24 23:33:24,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:33:24,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 23:33:24,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:33:24,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 23:33:24,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-10-24 23:33:24,364 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-10-24 23:33:24,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 89 transitions, 1113 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) [2024-10-24 23:33:24,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:33:24,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-10-24 23:33:24,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:33:24,576 INFO L124 PetriNetUnfolderBase]: 23/119 cut-off events. [2024-10-24 23:33:24,576 INFO L125 PetriNetUnfolderBase]: For 1335/1335 co-relation queries the response was YES. [2024-10-24 23:33:24,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 860 conditions, 119 events. 23/119 cut-off events. For 1335/1335 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 514 event pairs, 0 based on Foata normal form. 2/121 useless extension candidates. Maximal degree in co-relation 808. Up to 70 conditions per place. [2024-10-24 23:33:24,578 INFO L140 encePairwiseOnDemand]: 12/21 looper letters, 53 selfloop transitions, 11 changer transitions 19/97 dead transitions. [2024-10-24 23:33:24,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 97 transitions, 1353 flow [2024-10-24 23:33:24,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-24 23:33:24,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-24 23:33:24,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 82 transitions. [2024-10-24 23:33:24,579 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.30036630036630035 [2024-10-24 23:33:24,579 INFO L175 Difference]: Start difference. First operand has 167 places, 89 transitions, 1113 flow. Second operand 13 states and 82 transitions. [2024-10-24 23:33:24,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 97 transitions, 1353 flow [2024-10-24 23:33:24,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 97 transitions, 1157 flow, removed 12 selfloop flow, removed 33 redundant places. [2024-10-24 23:33:24,587 INFO L231 Difference]: Finished difference. Result has 134 places, 75 transitions, 780 flow [2024-10-24 23:33:24,587 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=917, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=780, PETRI_PLACES=134, PETRI_TRANSITIONS=75} [2024-10-24 23:33:24,587 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 110 predicate places. [2024-10-24 23:33:24,588 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 75 transitions, 780 flow [2024-10-24 23:33:24,588 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) [2024-10-24 23:33:24,588 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:33:24,588 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:33:24,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-24 23:33:24,588 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-24 23:33:24,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:33:24,590 INFO L85 PathProgramCache]: Analyzing trace with hash -762944143, now seen corresponding path program 2 times [2024-10-24 23:33:24,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:33:24,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002535159] [2024-10-24 23:33:24,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:24,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:33:24,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:24,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:33:24,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:33:24,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002535159] [2024-10-24 23:33:24,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002535159] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:33:24,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:33:24,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 23:33:24,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154375358] [2024-10-24 23:33:24,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:33:24,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 23:33:24,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:33:24,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 23:33:24,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-24 23:33:24,809 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-10-24 23:33:24,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 75 transitions, 780 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) [2024-10-24 23:33:24,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:33:24,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-10-24 23:33:24,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:33:25,074 INFO L124 PetriNetUnfolderBase]: 17/91 cut-off events. [2024-10-24 23:33:25,074 INFO L125 PetriNetUnfolderBase]: For 699/699 co-relation queries the response was YES. [2024-10-24 23:33:25,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 582 conditions, 91 events. 17/91 cut-off events. For 699/699 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 346 event pairs, 1 based on Foata normal form. 4/95 useless extension candidates. Maximal degree in co-relation 536. Up to 44 conditions per place. [2024-10-24 23:33:25,075 INFO L140 encePairwiseOnDemand]: 12/21 looper letters, 36 selfloop transitions, 7 changer transitions 31/82 dead transitions. [2024-10-24 23:33:25,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 82 transitions, 984 flow [2024-10-24 23:33:25,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 23:33:25,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-24 23:33:25,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 84 transitions. [2024-10-24 23:33:25,077 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2857142857142857 [2024-10-24 23:33:25,077 INFO L175 Difference]: Start difference. First operand has 134 places, 75 transitions, 780 flow. Second operand 14 states and 84 transitions. [2024-10-24 23:33:25,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 82 transitions, 984 flow [2024-10-24 23:33:25,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 82 transitions, 911 flow, removed 10 selfloop flow, removed 13 redundant places. [2024-10-24 23:33:25,083 INFO L231 Difference]: Finished difference. Result has 125 places, 49 transitions, 449 flow [2024-10-24 23:33:25,084 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=716, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=449, PETRI_PLACES=125, PETRI_TRANSITIONS=49} [2024-10-24 23:33:25,085 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 101 predicate places. [2024-10-24 23:33:25,085 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 49 transitions, 449 flow [2024-10-24 23:33:25,085 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) [2024-10-24 23:33:25,085 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:33:25,085 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:33:25,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-24 23:33:25,087 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-24 23:33:25,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:33:25,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1702095883, now seen corresponding path program 3 times [2024-10-24 23:33:25,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:33:25,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140503314] [2024-10-24 23:33:25,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:25,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:33:25,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:25,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:33:25,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:33:25,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140503314] [2024-10-24 23:33:25,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140503314] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:33:25,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:33:25,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 23:33:25,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267852178] [2024-10-24 23:33:25,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:33:25,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 23:33:25,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:33:25,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 23:33:25,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-10-24 23:33:25,331 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-10-24 23:33:25,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 49 transitions, 449 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) [2024-10-24 23:33:25,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:33:25,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-10-24 23:33:25,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:33:25,492 INFO L124 PetriNetUnfolderBase]: 9/56 cut-off events. [2024-10-24 23:33:25,492 INFO L125 PetriNetUnfolderBase]: For 274/274 co-relation queries the response was YES. [2024-10-24 23:33:25,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 336 conditions, 56 events. 9/56 cut-off events. For 274/274 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 151 event pairs, 1 based on Foata normal form. 2/58 useless extension candidates. Maximal degree in co-relation 303. Up to 28 conditions per place. [2024-10-24 23:33:25,493 INFO L140 encePairwiseOnDemand]: 12/21 looper letters, 25 selfloop transitions, 8 changer transitions 13/52 dead transitions. [2024-10-24 23:33:25,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 52 transitions, 565 flow [2024-10-24 23:33:25,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-24 23:33:25,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-24 23:33:25,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 69 transitions. [2024-10-24 23:33:25,494 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.27380952380952384 [2024-10-24 23:33:25,494 INFO L175 Difference]: Start difference. First operand has 125 places, 49 transitions, 449 flow. Second operand 12 states and 69 transitions. [2024-10-24 23:33:25,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 52 transitions, 565 flow [2024-10-24 23:33:25,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 52 transitions, 468 flow, removed 13 selfloop flow, removed 19 redundant places. [2024-10-24 23:33:25,497 INFO L231 Difference]: Finished difference. Result has 98 places, 37 transitions, 288 flow [2024-10-24 23:33:25,497 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=288, PETRI_PLACES=98, PETRI_TRANSITIONS=37} [2024-10-24 23:33:25,498 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 74 predicate places. [2024-10-24 23:33:25,498 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 37 transitions, 288 flow [2024-10-24 23:33:25,498 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) [2024-10-24 23:33:25,498 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:33:25,498 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:33:25,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-24 23:33:25,499 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-24 23:33:25,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:33:25,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1215757956, now seen corresponding path program 1 times [2024-10-24 23:33:25,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:33:25,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516136723] [2024-10-24 23:33:25,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:25,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:33:25,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:25,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:33:25,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:33:25,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516136723] [2024-10-24 23:33:25,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516136723] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:33:25,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:33:25,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 23:33:25,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523919056] [2024-10-24 23:33:25,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:33:25,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 23:33:25,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:33:25,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 23:33:25,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-24 23:33:25,715 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2024-10-24 23:33:25,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 37 transitions, 288 flow. Second operand has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:25,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:33:25,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2024-10-24 23:33:25,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:33:25,885 INFO L124 PetriNetUnfolderBase]: 5/42 cut-off events. [2024-10-24 23:33:25,885 INFO L125 PetriNetUnfolderBase]: For 111/111 co-relation queries the response was YES. [2024-10-24 23:33:25,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 220 conditions, 42 events. 5/42 cut-off events. For 111/111 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 83 event pairs, 0 based on Foata normal form. 1/43 useless extension candidates. Maximal degree in co-relation 198. Up to 9 conditions per place. [2024-10-24 23:33:25,885 INFO L140 encePairwiseOnDemand]: 11/21 looper letters, 20 selfloop transitions, 17 changer transitions 0/39 dead transitions. [2024-10-24 23:33:25,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 39 transitions, 368 flow [2024-10-24 23:33:25,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-24 23:33:25,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-24 23:33:25,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 57 transitions. [2024-10-24 23:33:25,886 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2261904761904762 [2024-10-24 23:33:25,887 INFO L175 Difference]: Start difference. First operand has 98 places, 37 transitions, 288 flow. Second operand 12 states and 57 transitions. [2024-10-24 23:33:25,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 39 transitions, 368 flow [2024-10-24 23:33:25,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 39 transitions, 304 flow, removed 5 selfloop flow, removed 20 redundant places. [2024-10-24 23:33:25,889 INFO L231 Difference]: Finished difference. Result has 73 places, 36 transitions, 252 flow [2024-10-24 23:33:25,889 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=252, PETRI_PLACES=73, PETRI_TRANSITIONS=36} [2024-10-24 23:33:25,889 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 49 predicate places. [2024-10-24 23:33:25,890 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 36 transitions, 252 flow [2024-10-24 23:33:25,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:25,890 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:33:25,890 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:33:25,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-24 23:33:25,890 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-24 23:33:25,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:33:25,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1228718066, now seen corresponding path program 3 times [2024-10-24 23:33:25,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:33:25,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016561706] [2024-10-24 23:33:25,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:25,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:33:25,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:26,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:33:26,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:33:26,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016561706] [2024-10-24 23:33:26,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016561706] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:33:26,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:33:26,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 23:33:26,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679143366] [2024-10-24 23:33:26,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:33:26,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 23:33:26,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:33:26,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 23:33:26,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-10-24 23:33:26,107 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-10-24 23:33:26,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 36 transitions, 252 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) [2024-10-24 23:33:26,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:33:26,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-10-24 23:33:26,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:33:26,247 INFO L124 PetriNetUnfolderBase]: 4/38 cut-off events. [2024-10-24 23:33:26,247 INFO L125 PetriNetUnfolderBase]: For 78/78 co-relation queries the response was YES. [2024-10-24 23:33:26,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180 conditions, 38 events. 4/38 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 67 event pairs, 0 based on Foata normal form. 3/41 useless extension candidates. Maximal degree in co-relation 166. Up to 8 conditions per place. [2024-10-24 23:33:26,248 INFO L140 encePairwiseOnDemand]: 12/21 looper letters, 8 selfloop transitions, 4 changer transitions 23/37 dead transitions. [2024-10-24 23:33:26,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 37 transitions, 318 flow [2024-10-24 23:33:26,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-24 23:33:26,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-24 23:33:26,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 68 transitions. [2024-10-24 23:33:26,249 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2490842490842491 [2024-10-24 23:33:26,249 INFO L175 Difference]: Start difference. First operand has 73 places, 36 transitions, 252 flow. Second operand 13 states and 68 transitions. [2024-10-24 23:33:26,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 37 transitions, 318 flow [2024-10-24 23:33:26,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 37 transitions, 276 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-10-24 23:33:26,250 INFO L231 Difference]: Finished difference. Result has 72 places, 14 transitions, 71 flow [2024-10-24 23:33:26,250 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=71, PETRI_PLACES=72, PETRI_TRANSITIONS=14} [2024-10-24 23:33:26,251 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 48 predicate places. [2024-10-24 23:33:26,251 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 14 transitions, 71 flow [2024-10-24 23:33:26,251 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) [2024-10-24 23:33:26,251 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:33:26,251 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:33:26,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-24 23:33:26,252 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-24 23:33:26,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:33:26,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1375230906, now seen corresponding path program 1 times [2024-10-24 23:33:26,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:33:26,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73811556] [2024-10-24 23:33:26,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:26,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:33:26,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:26,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:33:26,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:33:26,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73811556] [2024-10-24 23:33:26,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73811556] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:33:26,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:33:26,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 23:33:26,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911148852] [2024-10-24 23:33:26,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:33:26,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 23:33:26,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:33:26,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 23:33:26,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-10-24 23:33:26,459 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-10-24 23:33:26,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 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) [2024-10-24 23:33:26,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:33:26,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-10-24 23:33:26,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:33:26,528 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2024-10-24 23:33:26,529 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-10-24 23:33:26,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 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. [2024-10-24 23:33:26,529 INFO L140 encePairwiseOnDemand]: 13/21 looper letters, 0 selfloop transitions, 0 changer transitions 13/13 dead transitions. [2024-10-24 23:33:26,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 13 transitions, 89 flow [2024-10-24 23:33:26,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 23:33:26,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-24 23:33:26,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 39 transitions. [2024-10-24 23:33:26,530 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.20634920634920634 [2024-10-24 23:33:26,530 INFO L175 Difference]: Start difference. First operand has 72 places, 14 transitions, 71 flow. Second operand 9 states and 39 transitions. [2024-10-24 23:33:26,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 13 transitions, 89 flow [2024-10-24 23:33:26,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 13 transitions, 55 flow, removed 1 selfloop flow, removed 17 redundant places. [2024-10-24 23:33:26,531 INFO L231 Difference]: Finished difference. Result has 32 places, 0 transitions, 0 flow [2024-10-24 23:33:26,531 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=33, PETRI_DIFFERENCE_MINUEND_PLACES=24, 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=32, PETRI_TRANSITIONS=0} [2024-10-24 23:33:26,531 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 8 predicate places. [2024-10-24 23:33:26,531 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 0 transitions, 0 flow [2024-10-24 23:33:26,532 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) [2024-10-24 23:33:26,534 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 7 remaining) [2024-10-24 23:33:26,535 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 7 remaining) [2024-10-24 23:33:26,535 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2024-10-24 23:33:26,535 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 7 remaining) [2024-10-24 23:33:26,535 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 7 remaining) [2024-10-24 23:33:26,535 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 7 remaining) [2024-10-24 23:33:26,535 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 7 remaining) [2024-10-24 23:33:26,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-24 23:33:26,536 INFO L407 BasicCegarLoop]: Path program histogram: [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:33:26,541 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-24 23:33:26,541 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-24 23:33:26,545 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 11:33:26 BasicIcfg [2024-10-24 23:33:26,545 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-24 23:33:26,546 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-24 23:33:26,546 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-24 23:33:26,546 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-24 23:33:26,547 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:33:14" (3/4) ... [2024-10-24 23:33:26,548 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-24 23:33:26,551 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2024-10-24 23:33:26,554 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2024-10-24 23:33:26,554 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2024-10-24 23:33:26,554 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-10-24 23:33:26,637 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-24 23:33:26,637 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-24 23:33:26,637 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-24 23:33:26,638 INFO L158 Benchmark]: Toolchain (without parser) took 12873.84ms. Allocated memory was 174.1MB in the beginning and 364.9MB in the end (delta: 190.8MB). Free memory was 109.5MB in the beginning and 184.8MB in the end (delta: -75.3MB). Peak memory consumption was 115.5MB. Max. memory is 16.1GB. [2024-10-24 23:33:26,640 INFO L158 Benchmark]: CDTParser took 1.31ms. Allocated memory is still 96.5MB. Free memory is still 50.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 23:33:26,640 INFO L158 Benchmark]: CACSL2BoogieTranslator took 527.95ms. Allocated memory is still 174.1MB. Free memory was 109.0MB in the beginning and 135.5MB in the end (delta: -26.5MB). Peak memory consumption was 19.9MB. Max. memory is 16.1GB. [2024-10-24 23:33:26,640 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.98ms. Allocated memory is still 174.1MB. Free memory was 135.5MB in the beginning and 133.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-24 23:33:26,641 INFO L158 Benchmark]: Boogie Preprocessor took 40.64ms. Allocated memory is still 174.1MB. Free memory was 133.4MB in the beginning and 131.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-24 23:33:26,641 INFO L158 Benchmark]: RCFGBuilder took 450.86ms. Allocated memory is still 174.1MB. Free memory was 131.3MB in the beginning and 110.4MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-10-24 23:33:26,641 INFO L158 Benchmark]: TraceAbstraction took 11712.83ms. Allocated memory was 174.1MB in the beginning and 364.9MB in the end (delta: 190.8MB). Free memory was 109.8MB in the beginning and 187.9MB in the end (delta: -78.1MB). Peak memory consumption was 115.5MB. Max. memory is 16.1GB. [2024-10-24 23:33:26,642 INFO L158 Benchmark]: Witness Printer took 91.40ms. Allocated memory is still 364.9MB. Free memory was 187.9MB in the beginning and 184.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-24 23:33:26,643 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.31ms. Allocated memory is still 96.5MB. Free memory is still 50.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 527.95ms. Allocated memory is still 174.1MB. Free memory was 109.0MB in the beginning and 135.5MB in the end (delta: -26.5MB). Peak memory consumption was 19.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.98ms. Allocated memory is still 174.1MB. Free memory was 135.5MB in the beginning and 133.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.64ms. Allocated memory is still 174.1MB. Free memory was 133.4MB in the beginning and 131.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 450.86ms. Allocated memory is still 174.1MB. Free memory was 131.3MB in the beginning and 110.4MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 11712.83ms. Allocated memory was 174.1MB in the beginning and 364.9MB in the end (delta: 190.8MB). Free memory was 109.8MB in the beginning and 187.9MB in the end (delta: -78.1MB). Peak memory consumption was 115.5MB. Max. memory is 16.1GB. * Witness Printer took 91.40ms. Allocated memory is still 364.9MB. Free memory was 187.9MB in the beginning and 184.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. 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: 11.6s, OverallIterations: 25, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 5.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1066 SdHoareTripleChecker+Valid, 2.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 959 mSDsluCounter, 1133 SdHoareTripleChecker+Invalid, 2.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1065 mSDsCounter, 108 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3761 IncrementalHoareTripleChecker+Invalid, 3869 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 108 mSolverCounterUnsat, 68 mSDtfsCounter, 3761 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 288 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 279 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 476 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1728occurred in iteration=16, InterpolantAutomatonStates: 267, 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, 0.2s SatisfiabilityAnalysisTime, 5.2s InterpolantComputationTime, 284 NumberOfCodeBlocks, 284 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 259 ConstructedInterpolants, 0 QuantifiedInterpolants, 2847 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 25 InterpolantComputations, 25 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 - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-10-24 23:33:26,672 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/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