./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 a046e57d 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-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 16:40:27,278 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 16:40:27,336 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-13 16:40:27,342 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 16:40:27,344 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 16:40:27,378 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 16:40:27,379 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 16:40:27,379 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 16:40:27,380 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 16:40:27,381 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 16:40:27,381 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 16:40:27,382 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 16:40:27,382 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 16:40:27,382 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 16:40:27,384 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 16:40:27,385 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 16:40:27,385 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 16:40:27,385 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 16:40:27,385 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 16:40:27,385 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 16:40:27,386 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 16:40:27,386 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 16:40:27,387 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 16:40:27,387 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 16:40:27,387 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 16:40:27,387 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-13 16:40:27,388 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 16:40:27,388 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 16:40:27,388 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 16:40:27,388 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 16:40:27,389 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 16:40:27,389 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 16:40:27,389 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 16:40:27,390 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 16:40:27,390 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:40:27,390 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 16:40:27,391 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 16:40:27,391 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 16:40:27,391 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 16:40:27,391 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 16:40:27,392 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 16:40:27,392 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 16:40:27,392 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 16:40:27,393 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 16:40:27,393 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a7843ed292ba7ad810f8623eae57d1bf23212a957c35d700b564dc03a7df5581 [2024-10-13 16:40:27,688 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 16:40:27,712 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 16:40:27,716 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 16:40:27,717 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 16:40:27,717 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 16:40:27,718 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_15-list_entry_nr.i [2024-10-13 16:40:29,064 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 16:40:29,412 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 16:40:29,413 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_15-list_entry_nr.i [2024-10-13 16:40:29,445 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7e62551b/13f7adfb73084c3899f0d69c1af68da9/FLAG52d8f9420 [2024-10-13 16:40:29,696 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7e62551b/13f7adfb73084c3899f0d69c1af68da9 [2024-10-13 16:40:29,698 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 16:40:29,700 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 16:40:29,701 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 16:40:29,702 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 16:40:29,707 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 16:40:29,708 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:40:29" (1/1) ... [2024-10-13 16:40:29,709 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@272efd1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:29, skipping insertion in model container [2024-10-13 16:40:29,710 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:40:29" (1/1) ... [2024-10-13 16:40:29,776 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 16:40:30,155 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:40:30,165 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 16:40:30,222 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:40:30,265 INFO L204 MainTranslator]: Completed translation [2024-10-13 16:40:30,265 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:30 WrapperNode [2024-10-13 16:40:30,265 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 16:40:30,266 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 16:40:30,266 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 16:40:30,266 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 16:40:30,272 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:30" (1/1) ... [2024-10-13 16:40:30,283 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:30" (1/1) ... [2024-10-13 16:40:30,309 INFO L138 Inliner]: procedures = 186, calls = 12, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 57 [2024-10-13 16:40:30,310 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 16:40:30,311 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 16:40:30,314 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 16:40:30,314 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 16:40:30,325 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:30" (1/1) ... [2024-10-13 16:40:30,325 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:30" (1/1) ... [2024-10-13 16:40:30,331 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:30" (1/1) ... [2024-10-13 16:40:30,344 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]. [2024-10-13 16:40:30,345 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:30" (1/1) ... [2024-10-13 16:40:30,345 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:30" (1/1) ... [2024-10-13 16:40:30,349 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:30" (1/1) ... [2024-10-13 16:40:30,351 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:30" (1/1) ... [2024-10-13 16:40:30,352 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:30" (1/1) ... [2024-10-13 16:40:30,353 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:30" (1/1) ... [2024-10-13 16:40:30,357 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 16:40:30,358 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 16:40:30,358 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 16:40:30,358 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 16:40:30,359 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:30" (1/1) ... [2024-10-13 16:40:30,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:40:30,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:40:30,400 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) [2024-10-13 16:40:30,406 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 [2024-10-13 16:40:30,452 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-13 16:40:30,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-13 16:40:30,452 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-13 16:40:30,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-13 16:40:30,453 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-13 16:40:30,453 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-13 16:40:30,453 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-13 16:40:30,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 16:40:30,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 16:40:30,454 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 16:40:30,565 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 16:40:30,566 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 16:40:30,701 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 16:40:30,702 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 16:40:30,795 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 16:40:30,796 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-13 16:40:30,796 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:40:30 BoogieIcfgContainer [2024-10-13 16:40:30,796 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 16:40:30,798 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 16:40:30,798 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 16:40:30,801 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 16:40:30,802 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 04:40:29" (1/3) ... [2024-10-13 16:40:30,802 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79f12520 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:40:30, skipping insertion in model container [2024-10-13 16:40:30,803 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:30" (2/3) ... [2024-10-13 16:40:30,803 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79f12520 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:40:30, skipping insertion in model container [2024-10-13 16:40:30,804 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:40:30" (3/3) ... [2024-10-13 16:40:30,805 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_15-list_entry_nr.i [2024-10-13 16:40:30,821 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 16:40:30,821 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-10-13 16:40:30,821 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 16:40:30,853 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-13 16:40:30,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 25 places, 21 transitions, 46 flow [2024-10-13 16:40:30,899 INFO L124 PetriNetUnfolderBase]: 0/20 cut-off events. [2024-10-13 16:40:30,900 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 16:40:30,901 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. [2024-10-13 16:40:30,901 INFO L82 GeneralOperation]: Start removeDead. Operand has 25 places, 21 transitions, 46 flow [2024-10-13 16:40:30,904 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 20 transitions, 43 flow [2024-10-13 16:40:30,912 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 16:40:30,918 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;@23f2de55, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 16:40:30,918 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-10-13 16:40:30,923 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 16:40:30,923 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-10-13 16:40:30,924 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 16:40:30,924 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:30,925 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-13 16:40:30,925 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)] === [2024-10-13 16:40:30,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:30,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1131338283, now seen corresponding path program 1 times [2024-10-13 16:40:30,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:30,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420579417] [2024-10-13 16:40:30,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:30,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:31,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:31,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:40:31,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:31,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420579417] [2024-10-13 16:40:31,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420579417] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:40:31,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:40:31,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:40:31,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906567212] [2024-10-13 16:40:31,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:40:31,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 16:40:31,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:31,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 16:40:31,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 16:40:31,573 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 21 [2024-10-13 16:40:31,576 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) [2024-10-13 16:40:31,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:31,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 21 [2024-10-13 16:40:31,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:31,738 INFO L124 PetriNetUnfolderBase]: 52/125 cut-off events. [2024-10-13 16:40:31,741 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 16:40:31,743 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. [2024-10-13 16:40:31,745 INFO L140 encePairwiseOnDemand]: 14/21 looper letters, 28 selfloop transitions, 8 changer transitions 2/41 dead transitions. [2024-10-13 16:40:31,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 41 transitions, 161 flow [2024-10-13 16:40:31,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 16:40:31,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 16:40:31,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 64 transitions. [2024-10-13 16:40:31,757 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5079365079365079 [2024-10-13 16:40:31,759 INFO L175 Difference]: Start difference. First operand has 24 places, 20 transitions, 43 flow. Second operand 6 states and 64 transitions. [2024-10-13 16:40:31,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 41 transitions, 161 flow [2024-10-13 16:40:31,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 41 transitions, 160 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:40:31,765 INFO L231 Difference]: Finished difference. Result has 33 places, 25 transitions, 94 flow [2024-10-13 16:40:31,767 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} [2024-10-13 16:40:31,771 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 9 predicate places. [2024-10-13 16:40:31,771 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 25 transitions, 94 flow [2024-10-13 16:40:31,772 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) [2024-10-13 16:40:31,772 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:31,772 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-13 16:40:31,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 16:40:31,773 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)] === [2024-10-13 16:40:31,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:31,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1131858609, now seen corresponding path program 1 times [2024-10-13 16:40:31,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:31,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921101344] [2024-10-13 16:40:31,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:31,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:31,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:31,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:40:31,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:31,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921101344] [2024-10-13 16:40:31,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921101344] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:40:31,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:40:31,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:40:31,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296669536] [2024-10-13 16:40:31,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:40:31,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 16:40:31,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:31,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 16:40:31,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 16:40:32,002 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 21 [2024-10-13 16:40:32,003 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) [2024-10-13 16:40:32,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:32,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 21 [2024-10-13 16:40:32,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:32,153 INFO L124 PetriNetUnfolderBase]: 42/117 cut-off events. [2024-10-13 16:40:32,154 INFO L125 PetriNetUnfolderBase]: For 68/72 co-relation queries the response was YES. [2024-10-13 16:40:32,155 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. [2024-10-13 16:40:32,157 INFO L140 encePairwiseOnDemand]: 14/21 looper letters, 28 selfloop transitions, 10 changer transitions 0/42 dead transitions. [2024-10-13 16:40:32,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 42 transitions, 228 flow [2024-10-13 16:40:32,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 16:40:32,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 16:40:32,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 62 transitions. [2024-10-13 16:40:32,161 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49206349206349204 [2024-10-13 16:40:32,161 INFO L175 Difference]: Start difference. First operand has 33 places, 25 transitions, 94 flow. Second operand 6 states and 62 transitions. [2024-10-13 16:40:32,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 42 transitions, 228 flow [2024-10-13 16:40:32,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 42 transitions, 228 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 16:40:32,166 INFO L231 Difference]: Finished difference. Result has 43 places, 30 transitions, 162 flow [2024-10-13 16:40:32,167 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} [2024-10-13 16:40:32,168 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 19 predicate places. [2024-10-13 16:40:32,168 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 30 transitions, 162 flow [2024-10-13 16:40:32,169 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) [2024-10-13 16:40:32,169 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:32,169 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:40:32,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 16:40:32,170 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)] === [2024-10-13 16:40:32,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:32,172 INFO L85 PathProgramCache]: Analyzing trace with hash 727878704, now seen corresponding path program 1 times [2024-10-13 16:40:32,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:32,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939109850] [2024-10-13 16:40:32,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:32,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:32,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:32,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:40:32,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:32,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939109850] [2024-10-13 16:40:32,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939109850] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:40:32,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:40:32,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:40:32,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971012696] [2024-10-13 16:40:32,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:40:32,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 16:40:32,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:32,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 16:40:32,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 16:40:32,353 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 21 [2024-10-13 16:40:32,354 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) [2024-10-13 16:40:32,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:32,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 21 [2024-10-13 16:40:32,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:32,484 INFO L124 PetriNetUnfolderBase]: 29/100 cut-off events. [2024-10-13 16:40:32,484 INFO L125 PetriNetUnfolderBase]: For 116/120 co-relation queries the response was YES. [2024-10-13 16:40:32,485 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. [2024-10-13 16:40:32,485 INFO L140 encePairwiseOnDemand]: 14/21 looper letters, 24 selfloop transitions, 9 changer transitions 1/40 dead transitions. [2024-10-13 16:40:32,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 40 transitions, 266 flow [2024-10-13 16:40:32,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 16:40:32,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 16:40:32,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 64 transitions. [2024-10-13 16:40:32,487 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5079365079365079 [2024-10-13 16:40:32,488 INFO L175 Difference]: Start difference. First operand has 43 places, 30 transitions, 162 flow. Second operand 6 states and 64 transitions. [2024-10-13 16:40:32,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 40 transitions, 266 flow [2024-10-13 16:40:32,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 40 transitions, 266 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 16:40:32,491 INFO L231 Difference]: Finished difference. Result has 50 places, 29 transitions, 179 flow [2024-10-13 16:40:32,491 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} [2024-10-13 16:40:32,492 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 26 predicate places. [2024-10-13 16:40:32,492 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 29 transitions, 179 flow [2024-10-13 16:40:32,492 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) [2024-10-13 16:40:32,492 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:32,492 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:40:32,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 16:40:32,493 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)] === [2024-10-13 16:40:32,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:32,493 INFO L85 PathProgramCache]: Analyzing trace with hash 711748585, now seen corresponding path program 1 times [2024-10-13 16:40:32,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:32,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197011888] [2024-10-13 16:40:32,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:32,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:32,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:32,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:40:32,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:32,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197011888] [2024-10-13 16:40:32,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197011888] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:40:32,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:40:32,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:40:32,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730676929] [2024-10-13 16:40:32,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:40:32,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 16:40:32,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:32,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 16:40:32,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 16:40:32,629 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 21 [2024-10-13 16:40:32,629 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) [2024-10-13 16:40:32,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:32,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 21 [2024-10-13 16:40:32,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:32,740 INFO L124 PetriNetUnfolderBase]: 29/96 cut-off events. [2024-10-13 16:40:32,740 INFO L125 PetriNetUnfolderBase]: For 202/206 co-relation queries the response was YES. [2024-10-13 16:40:32,741 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. [2024-10-13 16:40:32,742 INFO L140 encePairwiseOnDemand]: 15/21 looper letters, 22 selfloop transitions, 7 changer transitions 4/39 dead transitions. [2024-10-13 16:40:32,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 39 transitions, 291 flow [2024-10-13 16:40:32,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 16:40:32,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 16:40:32,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 64 transitions. [2024-10-13 16:40:32,744 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5079365079365079 [2024-10-13 16:40:32,744 INFO L175 Difference]: Start difference. First operand has 50 places, 29 transitions, 179 flow. Second operand 6 states and 64 transitions. [2024-10-13 16:40:32,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 39 transitions, 291 flow [2024-10-13 16:40:32,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 39 transitions, 259 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-10-13 16:40:32,747 INFO L231 Difference]: Finished difference. Result has 51 places, 28 transitions, 167 flow [2024-10-13 16:40:32,747 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} [2024-10-13 16:40:32,748 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 27 predicate places. [2024-10-13 16:40:32,748 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 28 transitions, 167 flow [2024-10-13 16:40:32,748 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) [2024-10-13 16:40:32,749 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:32,749 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:40:32,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 16:40:32,749 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)] === [2024-10-13 16:40:32,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:32,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1626266277, now seen corresponding path program 1 times [2024-10-13 16:40:32,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:32,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519145685] [2024-10-13 16:40:32,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:32,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:32,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:32,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:40:32,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:32,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519145685] [2024-10-13 16:40:32,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519145685] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:40:32,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:40:32,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 16:40:32,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599126401] [2024-10-13 16:40:32,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:40:32,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 16:40:32,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:32,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 16:40:32,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 16:40:32,930 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 21 [2024-10-13 16:40:32,930 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) [2024-10-13 16:40:32,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:32,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 21 [2024-10-13 16:40:32,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:33,027 INFO L124 PetriNetUnfolderBase]: 25/90 cut-off events. [2024-10-13 16:40:33,030 INFO L125 PetriNetUnfolderBase]: For 171/176 co-relation queries the response was YES. [2024-10-13 16:40:33,030 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. [2024-10-13 16:40:33,031 INFO L140 encePairwiseOnDemand]: 14/21 looper letters, 30 selfloop transitions, 9 changer transitions 0/47 dead transitions. [2024-10-13 16:40:33,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 47 transitions, 346 flow [2024-10-13 16:40:33,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 16:40:33,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 16:40:33,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 66 transitions. [2024-10-13 16:40:33,034 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6285714285714286 [2024-10-13 16:40:33,034 INFO L175 Difference]: Start difference. First operand has 51 places, 28 transitions, 167 flow. Second operand 5 states and 66 transitions. [2024-10-13 16:40:33,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 47 transitions, 346 flow [2024-10-13 16:40:33,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 47 transitions, 315 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-10-13 16:40:33,038 INFO L231 Difference]: Finished difference. Result has 50 places, 32 transitions, 196 flow [2024-10-13 16:40:33,039 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} [2024-10-13 16:40:33,040 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 26 predicate places. [2024-10-13 16:40:33,041 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 32 transitions, 196 flow [2024-10-13 16:40:33,041 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) [2024-10-13 16:40:33,041 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:33,041 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:40:33,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 16:40:33,042 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)] === [2024-10-13 16:40:33,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:33,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1815838693, now seen corresponding path program 2 times [2024-10-13 16:40:33,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:33,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733056843] [2024-10-13 16:40:33,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:33,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:33,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:33,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:40:33,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:33,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733056843] [2024-10-13 16:40:33,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733056843] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:40:33,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:40:33,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 16:40:33,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332080639] [2024-10-13 16:40:33,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:40:33,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 16:40:33,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:33,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 16:40:33,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 16:40:33,184 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 21 [2024-10-13 16:40:33,184 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) [2024-10-13 16:40:33,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:33,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 21 [2024-10-13 16:40:33,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:33,282 INFO L124 PetriNetUnfolderBase]: 25/104 cut-off events. [2024-10-13 16:40:33,283 INFO L125 PetriNetUnfolderBase]: For 176/180 co-relation queries the response was YES. [2024-10-13 16:40:33,283 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. [2024-10-13 16:40:33,285 INFO L140 encePairwiseOnDemand]: 14/21 looper letters, 31 selfloop transitions, 12 changer transitions 0/51 dead transitions. [2024-10-13 16:40:33,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 51 transitions, 396 flow [2024-10-13 16:40:33,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 16:40:33,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 16:40:33,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 66 transitions. [2024-10-13 16:40:33,287 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6285714285714286 [2024-10-13 16:40:33,287 INFO L175 Difference]: Start difference. First operand has 50 places, 32 transitions, 196 flow. Second operand 5 states and 66 transitions. [2024-10-13 16:40:33,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 51 transitions, 396 flow [2024-10-13 16:40:33,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 51 transitions, 370 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 16:40:33,290 INFO L231 Difference]: Finished difference. Result has 54 places, 36 transitions, 245 flow [2024-10-13 16:40:33,290 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} [2024-10-13 16:40:33,291 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 30 predicate places. [2024-10-13 16:40:33,291 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 36 transitions, 245 flow [2024-10-13 16:40:33,292 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) [2024-10-13 16:40:33,292 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:33,292 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:40:33,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 16:40:33,292 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)] === [2024-10-13 16:40:33,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:33,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1048367826, now seen corresponding path program 1 times [2024-10-13 16:40:33,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:33,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523251589] [2024-10-13 16:40:33,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:33,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:33,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:33,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:40:33,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:33,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523251589] [2024-10-13 16:40:33,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523251589] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:40:33,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:40:33,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 16:40:33,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44432903] [2024-10-13 16:40:33,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:40:33,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 16:40:33,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:33,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 16:40:33,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 16:40:33,449 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 21 [2024-10-13 16:40:33,449 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) [2024-10-13 16:40:33,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:33,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 21 [2024-10-13 16:40:33,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:33,556 INFO L124 PetriNetUnfolderBase]: 30/131 cut-off events. [2024-10-13 16:40:33,556 INFO L125 PetriNetUnfolderBase]: For 298/303 co-relation queries the response was YES. [2024-10-13 16:40:33,557 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. [2024-10-13 16:40:33,558 INFO L140 encePairwiseOnDemand]: 13/21 looper letters, 34 selfloop transitions, 17 changer transitions 0/59 dead transitions. [2024-10-13 16:40:33,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 59 transitions, 493 flow [2024-10-13 16:40:33,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 16:40:33,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 16:40:33,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 72 transitions. [2024-10-13 16:40:33,559 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6857142857142857 [2024-10-13 16:40:33,559 INFO L175 Difference]: Start difference. First operand has 54 places, 36 transitions, 245 flow. Second operand 5 states and 72 transitions. [2024-10-13 16:40:33,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 59 transitions, 493 flow [2024-10-13 16:40:33,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 59 transitions, 462 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-10-13 16:40:33,565 INFO L231 Difference]: Finished difference. Result has 59 places, 46 transitions, 355 flow [2024-10-13 16:40:33,565 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} [2024-10-13 16:40:33,566 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 35 predicate places. [2024-10-13 16:40:33,567 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 46 transitions, 355 flow [2024-10-13 16:40:33,567 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) [2024-10-13 16:40:33,567 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:33,567 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:40:33,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 16:40:33,568 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)] === [2024-10-13 16:40:33,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:33,569 INFO L85 PathProgramCache]: Analyzing trace with hash -810735161, now seen corresponding path program 3 times [2024-10-13 16:40:33,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:33,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768920887] [2024-10-13 16:40:33,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:33,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:33,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:33,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:40:33,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:33,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768920887] [2024-10-13 16:40:33,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768920887] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:40:33,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:40:33,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 16:40:33,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060585176] [2024-10-13 16:40:33,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:40:33,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 16:40:33,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:33,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 16:40:33,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 16:40:33,689 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 21 [2024-10-13 16:40:33,689 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) [2024-10-13 16:40:33,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:33,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 21 [2024-10-13 16:40:33,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:33,785 INFO L124 PetriNetUnfolderBase]: 20/96 cut-off events. [2024-10-13 16:40:33,785 INFO L125 PetriNetUnfolderBase]: For 355/359 co-relation queries the response was YES. [2024-10-13 16:40:33,786 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. [2024-10-13 16:40:33,787 INFO L140 encePairwiseOnDemand]: 13/21 looper letters, 35 selfloop transitions, 21 changer transitions 0/64 dead transitions. [2024-10-13 16:40:33,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 64 transitions, 606 flow [2024-10-13 16:40:33,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 16:40:33,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 16:40:33,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 72 transitions. [2024-10-13 16:40:33,790 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6857142857142857 [2024-10-13 16:40:33,790 INFO L175 Difference]: Start difference. First operand has 59 places, 46 transitions, 355 flow. Second operand 5 states and 72 transitions. [2024-10-13 16:40:33,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 64 transitions, 606 flow [2024-10-13 16:40:33,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 64 transitions, 577 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-10-13 16:40:33,795 INFO L231 Difference]: Finished difference. Result has 65 places, 54 transitions, 483 flow [2024-10-13 16:40:33,795 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} [2024-10-13 16:40:33,797 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 41 predicate places. [2024-10-13 16:40:33,798 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 54 transitions, 483 flow [2024-10-13 16:40:33,798 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) [2024-10-13 16:40:33,798 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:33,798 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:40:33,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-13 16:40:33,799 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)] === [2024-10-13 16:40:33,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:33,799 INFO L85 PathProgramCache]: Analyzing trace with hash 520618547, now seen corresponding path program 1 times [2024-10-13 16:40:33,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:33,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145674330] [2024-10-13 16:40:33,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:33,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:33,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:34,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:40:34,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:34,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145674330] [2024-10-13 16:40:34,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145674330] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:40:34,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:40:34,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 16:40:34,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857486887] [2024-10-13 16:40:34,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:40:34,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-13 16:40:34,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:34,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-13 16:40:34,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-13 16:40:34,174 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2024-10-13 16:40:34,175 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) [2024-10-13 16:40:34,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:34,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2024-10-13 16:40:34,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:34,364 INFO L124 PetriNetUnfolderBase]: 29/110 cut-off events. [2024-10-13 16:40:34,364 INFO L125 PetriNetUnfolderBase]: For 529/531 co-relation queries the response was YES. [2024-10-13 16:40:34,364 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. [2024-10-13 16:40:34,365 INFO L140 encePairwiseOnDemand]: 11/21 looper letters, 50 selfloop transitions, 22 changer transitions 0/74 dead transitions. [2024-10-13 16:40:34,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 74 transitions, 797 flow [2024-10-13 16:40:34,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 16:40:34,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 16:40:34,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 64 transitions. [2024-10-13 16:40:34,368 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3386243386243386 [2024-10-13 16:40:34,369 INFO L175 Difference]: Start difference. First operand has 65 places, 54 transitions, 483 flow. Second operand 9 states and 64 transitions. [2024-10-13 16:40:34,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 74 transitions, 797 flow [2024-10-13 16:40:34,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 74 transitions, 761 flow, removed 18 selfloop flow, removed 0 redundant places. [2024-10-13 16:40:34,374 INFO L231 Difference]: Finished difference. Result has 77 places, 63 transitions, 616 flow [2024-10-13 16:40:34,374 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} [2024-10-13 16:40:34,375 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 53 predicate places. [2024-10-13 16:40:34,375 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 63 transitions, 616 flow [2024-10-13 16:40:34,376 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) [2024-10-13 16:40:34,376 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:34,376 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:40:34,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-13 16:40:34,376 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)] === [2024-10-13 16:40:34,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:34,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1289756849, now seen corresponding path program 2 times [2024-10-13 16:40:34,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:34,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241422079] [2024-10-13 16:40:34,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:34,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:34,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:34,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:40:34,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:34,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241422079] [2024-10-13 16:40:34,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241422079] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:40:34,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:40:34,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-13 16:40:34,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029398931] [2024-10-13 16:40:34,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:40:34,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 16:40:34,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:34,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 16:40:34,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-13 16:40:34,671 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2024-10-13 16:40:34,671 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) [2024-10-13 16:40:34,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:34,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2024-10-13 16:40:34,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:34,951 INFO L124 PetriNetUnfolderBase]: 32/126 cut-off events. [2024-10-13 16:40:34,951 INFO L125 PetriNetUnfolderBase]: For 724/726 co-relation queries the response was YES. [2024-10-13 16:40:34,952 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. [2024-10-13 16:40:34,953 INFO L140 encePairwiseOnDemand]: 11/21 looper letters, 53 selfloop transitions, 35 changer transitions 0/90 dead transitions. [2024-10-13 16:40:34,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 90 transitions, 1017 flow [2024-10-13 16:40:34,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-13 16:40:34,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-13 16:40:34,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 70 transitions. [2024-10-13 16:40:34,954 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2777777777777778 [2024-10-13 16:40:34,954 INFO L175 Difference]: Start difference. First operand has 77 places, 63 transitions, 616 flow. Second operand 12 states and 70 transitions. [2024-10-13 16:40:34,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 90 transitions, 1017 flow [2024-10-13 16:40:34,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 90 transitions, 1003 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-10-13 16:40:34,960 INFO L231 Difference]: Finished difference. Result has 94 places, 77 transitions, 863 flow [2024-10-13 16:40:34,961 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} [2024-10-13 16:40:34,961 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 70 predicate places. [2024-10-13 16:40:34,962 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 77 transitions, 863 flow [2024-10-13 16:40:34,962 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) [2024-10-13 16:40:34,962 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:34,962 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:40:34,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-13 16:40:34,963 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)] === [2024-10-13 16:40:34,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:34,963 INFO L85 PathProgramCache]: Analyzing trace with hash 2108195451, now seen corresponding path program 3 times [2024-10-13 16:40:34,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:34,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510842920] [2024-10-13 16:40:34,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:34,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:34,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:35,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:40:35,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:35,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510842920] [2024-10-13 16:40:35,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510842920] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:40:35,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:40:35,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-13 16:40:35,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696843538] [2024-10-13 16:40:35,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:40:35,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 16:40:35,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:35,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 16:40:35,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-10-13 16:40:35,264 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2024-10-13 16:40:35,264 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) [2024-10-13 16:40:35,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:35,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2024-10-13 16:40:35,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:35,569 INFO L124 PetriNetUnfolderBase]: 35/140 cut-off events. [2024-10-13 16:40:35,570 INFO L125 PetriNetUnfolderBase]: For 1042/1043 co-relation queries the response was YES. [2024-10-13 16:40:35,571 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. [2024-10-13 16:40:35,572 INFO L140 encePairwiseOnDemand]: 11/21 looper letters, 67 selfloop transitions, 31 changer transitions 0/100 dead transitions. [2024-10-13 16:40:35,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 100 transitions, 1263 flow [2024-10-13 16:40:35,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-13 16:40:35,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-13 16:40:35,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 82 transitions. [2024-10-13 16:40:35,574 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2789115646258503 [2024-10-13 16:40:35,574 INFO L175 Difference]: Start difference. First operand has 94 places, 77 transitions, 863 flow. Second operand 14 states and 82 transitions. [2024-10-13 16:40:35,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 100 transitions, 1263 flow [2024-10-13 16:40:35,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 100 transitions, 1248 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-13 16:40:35,584 INFO L231 Difference]: Finished difference. Result has 111 places, 88 transitions, 1071 flow [2024-10-13 16:40:35,584 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} [2024-10-13 16:40:35,584 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 87 predicate places. [2024-10-13 16:40:35,584 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 88 transitions, 1071 flow [2024-10-13 16:40:35,585 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) [2024-10-13 16:40:35,585 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:35,585 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:40:35,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-13 16:40:35,586 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)] === [2024-10-13 16:40:35,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:35,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1964273757, now seen corresponding path program 1 times [2024-10-13 16:40:35,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:35,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688566107] [2024-10-13 16:40:35,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:35,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:35,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:35,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:40:35,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:35,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688566107] [2024-10-13 16:40:35,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688566107] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:40:35,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:40:35,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-13 16:40:35,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122305724] [2024-10-13 16:40:35,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:40:35,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 16:40:35,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:35,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 16:40:35,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-13 16:40:35,867 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2024-10-13 16:40:35,868 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) [2024-10-13 16:40:35,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:35,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2024-10-13 16:40:35,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:36,157 INFO L124 PetriNetUnfolderBase]: 40/158 cut-off events. [2024-10-13 16:40:36,157 INFO L125 PetriNetUnfolderBase]: For 1395/1395 co-relation queries the response was YES. [2024-10-13 16:40:36,158 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. [2024-10-13 16:40:36,159 INFO L140 encePairwiseOnDemand]: 11/21 looper letters, 67 selfloop transitions, 35 changer transitions 0/112 dead transitions. [2024-10-13 16:40:36,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 112 transitions, 1445 flow [2024-10-13 16:40:36,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-13 16:40:36,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-13 16:40:36,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 70 transitions. [2024-10-13 16:40:36,161 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2777777777777778 [2024-10-13 16:40:36,161 INFO L175 Difference]: Start difference. First operand has 111 places, 88 transitions, 1071 flow. Second operand 12 states and 70 transitions. [2024-10-13 16:40:36,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 112 transitions, 1445 flow [2024-10-13 16:40:36,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 112 transitions, 1388 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-10-13 16:40:36,172 INFO L231 Difference]: Finished difference. Result has 124 places, 100 transitions, 1225 flow [2024-10-13 16:40:36,172 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} [2024-10-13 16:40:36,173 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 100 predicate places. [2024-10-13 16:40:36,173 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 100 transitions, 1225 flow [2024-10-13 16:40:36,173 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) [2024-10-13 16:40:36,173 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:36,174 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:40:36,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-13 16:40:36,174 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)] === [2024-10-13 16:40:36,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:36,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1554974075, now seen corresponding path program 2 times [2024-10-13 16:40:36,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:36,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723067210] [2024-10-13 16:40:36,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:36,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:36,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:36,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:40:36,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:36,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723067210] [2024-10-13 16:40:36,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723067210] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:40:36,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:40:36,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-13 16:40:36,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569602953] [2024-10-13 16:40:36,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:40:36,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 16:40:36,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:36,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 16:40:36,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-13 16:40:36,406 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2024-10-13 16:40:36,406 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) [2024-10-13 16:40:36,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:36,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2024-10-13 16:40:36,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:36,670 INFO L124 PetriNetUnfolderBase]: 43/172 cut-off events. [2024-10-13 16:40:36,670 INFO L125 PetriNetUnfolderBase]: For 1612/1612 co-relation queries the response was YES. [2024-10-13 16:40:36,671 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. [2024-10-13 16:40:36,672 INFO L140 encePairwiseOnDemand]: 11/21 looper letters, 80 selfloop transitions, 31 changer transitions 0/121 dead transitions. [2024-10-13 16:40:36,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 121 transitions, 1618 flow [2024-10-13 16:40:36,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-13 16:40:36,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-13 16:40:36,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 82 transitions. [2024-10-13 16:40:36,674 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2789115646258503 [2024-10-13 16:40:36,674 INFO L175 Difference]: Start difference. First operand has 124 places, 100 transitions, 1225 flow. Second operand 14 states and 82 transitions. [2024-10-13 16:40:36,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 121 transitions, 1618 flow [2024-10-13 16:40:36,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 121 transitions, 1609 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-10-13 16:40:36,688 INFO L231 Difference]: Finished difference. Result has 141 places, 109 transitions, 1397 flow [2024-10-13 16:40:36,688 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} [2024-10-13 16:40:36,689 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 117 predicate places. [2024-10-13 16:40:36,689 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 109 transitions, 1397 flow [2024-10-13 16:40:36,689 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) [2024-10-13 16:40:36,689 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:36,690 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:40:36,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-13 16:40:36,690 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)] === [2024-10-13 16:40:36,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:36,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1479022213, now seen corresponding path program 4 times [2024-10-13 16:40:36,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:36,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526131191] [2024-10-13 16:40:36,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:36,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:36,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:36,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:40:36,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:36,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526131191] [2024-10-13 16:40:36,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526131191] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:40:36,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:40:36,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-13 16:40:36,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379503926] [2024-10-13 16:40:36,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:40:36,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 16:40:36,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:36,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 16:40:36,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-13 16:40:36,946 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2024-10-13 16:40:36,947 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) [2024-10-13 16:40:36,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:36,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2024-10-13 16:40:36,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:37,200 INFO L124 PetriNetUnfolderBase]: 41/174 cut-off events. [2024-10-13 16:40:37,200 INFO L125 PetriNetUnfolderBase]: For 1971/1971 co-relation queries the response was YES. [2024-10-13 16:40:37,201 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. [2024-10-13 16:40:37,203 INFO L140 encePairwiseOnDemand]: 11/21 looper letters, 71 selfloop transitions, 48 changer transitions 0/127 dead transitions. [2024-10-13 16:40:37,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 127 transitions, 1799 flow [2024-10-13 16:40:37,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-13 16:40:37,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-13 16:40:37,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 80 transitions. [2024-10-13 16:40:37,204 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.272108843537415 [2024-10-13 16:40:37,204 INFO L175 Difference]: Start difference. First operand has 141 places, 109 transitions, 1397 flow. Second operand 14 states and 80 transitions. [2024-10-13 16:40:37,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 127 transitions, 1799 flow [2024-10-13 16:40:37,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 127 transitions, 1753 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-10-13 16:40:37,221 INFO L231 Difference]: Finished difference. Result has 153 places, 115 transitions, 1546 flow [2024-10-13 16:40:37,222 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} [2024-10-13 16:40:37,223 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 129 predicate places. [2024-10-13 16:40:37,223 INFO L471 AbstractCegarLoop]: Abstraction has has 153 places, 115 transitions, 1546 flow [2024-10-13 16:40:37,224 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) [2024-10-13 16:40:37,224 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:37,224 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:40:37,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-13 16:40:37,224 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)] === [2024-10-13 16:40:37,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:37,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1123800711, now seen corresponding path program 3 times [2024-10-13 16:40:37,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:37,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526479349] [2024-10-13 16:40:37,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:37,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:37,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:37,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:40:37,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:37,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526479349] [2024-10-13 16:40:37,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526479349] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:40:37,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:40:37,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-13 16:40:37,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234435286] [2024-10-13 16:40:37,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:40:37,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 16:40:37,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:37,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 16:40:37,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-13 16:40:37,457 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2024-10-13 16:40:37,457 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) [2024-10-13 16:40:37,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:37,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2024-10-13 16:40:37,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:37,706 INFO L124 PetriNetUnfolderBase]: 40/178 cut-off events. [2024-10-13 16:40:37,706 INFO L125 PetriNetUnfolderBase]: For 2234/2234 co-relation queries the response was YES. [2024-10-13 16:40:37,716 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. [2024-10-13 16:40:37,717 INFO L140 encePairwiseOnDemand]: 11/21 looper letters, 85 selfloop transitions, 33 changer transitions 0/130 dead transitions. [2024-10-13 16:40:37,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 130 transitions, 1919 flow [2024-10-13 16:40:37,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-13 16:40:37,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-13 16:40:37,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 78 transitions. [2024-10-13 16:40:37,719 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2857142857142857 [2024-10-13 16:40:37,719 INFO L175 Difference]: Start difference. First operand has 153 places, 115 transitions, 1546 flow. Second operand 13 states and 78 transitions. [2024-10-13 16:40:37,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 130 transitions, 1919 flow [2024-10-13 16:40:37,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 130 transitions, 1832 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-10-13 16:40:37,733 INFO L231 Difference]: Finished difference. Result has 161 places, 120 transitions, 1603 flow [2024-10-13 16:40:37,734 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} [2024-10-13 16:40:37,734 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 137 predicate places. [2024-10-13 16:40:37,734 INFO L471 AbstractCegarLoop]: Abstraction has has 161 places, 120 transitions, 1603 flow [2024-10-13 16:40:37,734 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) [2024-10-13 16:40:37,735 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:37,735 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:40:37,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-13 16:40:37,735 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)] === [2024-10-13 16:40:37,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:37,736 INFO L85 PathProgramCache]: Analyzing trace with hash -470548321, now seen corresponding path program 4 times [2024-10-13 16:40:37,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:37,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14115391] [2024-10-13 16:40:37,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:37,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:37,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:37,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:40:37,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:37,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14115391] [2024-10-13 16:40:37,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14115391] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:40:37,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:40:37,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-13 16:40:37,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167987959] [2024-10-13 16:40:37,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:40:37,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 16:40:37,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:37,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 16:40:37,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-10-13 16:40:37,956 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2024-10-13 16:40:37,956 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) [2024-10-13 16:40:37,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:37,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2024-10-13 16:40:37,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:38,214 INFO L124 PetriNetUnfolderBase]: 38/180 cut-off events. [2024-10-13 16:40:38,214 INFO L125 PetriNetUnfolderBase]: For 2299/2299 co-relation queries the response was YES. [2024-10-13 16:40:38,215 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. [2024-10-13 16:40:38,217 INFO L140 encePairwiseOnDemand]: 11/21 looper letters, 77 selfloop transitions, 48 changer transitions 0/137 dead transitions. [2024-10-13 16:40:38,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 137 transitions, 2005 flow [2024-10-13 16:40:38,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-13 16:40:38,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-13 16:40:38,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 74 transitions. [2024-10-13 16:40:38,218 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.27106227106227104 [2024-10-13 16:40:38,218 INFO L175 Difference]: Start difference. First operand has 161 places, 120 transitions, 1603 flow. Second operand 13 states and 74 transitions. [2024-10-13 16:40:38,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 137 transitions, 2005 flow [2024-10-13 16:40:38,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 137 transitions, 1934 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-10-13 16:40:38,234 INFO L231 Difference]: Finished difference. Result has 169 places, 126 transitions, 1728 flow [2024-10-13 16:40:38,234 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} [2024-10-13 16:40:38,235 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 145 predicate places. [2024-10-13 16:40:38,235 INFO L471 AbstractCegarLoop]: Abstraction has has 169 places, 126 transitions, 1728 flow [2024-10-13 16:40:38,235 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) [2024-10-13 16:40:38,235 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:38,235 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:40:38,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-13 16:40:38,236 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)] === [2024-10-13 16:40:38,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:38,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1014193618, now seen corresponding path program 1 times [2024-10-13 16:40:38,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:38,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402289745] [2024-10-13 16:40:38,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:38,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:38,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:38,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:40:38,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:38,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402289745] [2024-10-13 16:40:38,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402289745] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:40:38,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:40:38,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-13 16:40:38,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862281076] [2024-10-13 16:40:38,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:40:38,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 16:40:38,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:38,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 16:40:38,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-10-13 16:40:38,465 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2024-10-13 16:40:38,465 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) [2024-10-13 16:40:38,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:38,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2024-10-13 16:40:38,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:38,734 INFO L124 PetriNetUnfolderBase]: 38/179 cut-off events. [2024-10-13 16:40:38,735 INFO L125 PetriNetUnfolderBase]: For 2361/2361 co-relation queries the response was YES. [2024-10-13 16:40:38,736 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. [2024-10-13 16:40:38,738 INFO L140 encePairwiseOnDemand]: 11/21 looper letters, 76 selfloop transitions, 49 changer transitions 0/137 dead transitions. [2024-10-13 16:40:38,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 137 transitions, 2056 flow [2024-10-13 16:40:38,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-13 16:40:38,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-13 16:40:38,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 80 transitions. [2024-10-13 16:40:38,739 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.25396825396825395 [2024-10-13 16:40:38,739 INFO L175 Difference]: Start difference. First operand has 169 places, 126 transitions, 1728 flow. Second operand 15 states and 80 transitions. [2024-10-13 16:40:38,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 137 transitions, 2056 flow [2024-10-13 16:40:38,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 137 transitions, 1932 flow, removed 17 selfloop flow, removed 16 redundant places. [2024-10-13 16:40:38,755 INFO L231 Difference]: Finished difference. Result has 166 places, 125 transitions, 1682 flow [2024-10-13 16:40:38,757 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} [2024-10-13 16:40:38,757 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 142 predicate places. [2024-10-13 16:40:38,757 INFO L471 AbstractCegarLoop]: Abstraction has has 166 places, 125 transitions, 1682 flow [2024-10-13 16:40:38,758 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) [2024-10-13 16:40:38,758 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:38,758 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:40:38,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-13 16:40:38,758 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)] === [2024-10-13 16:40:38,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:38,759 INFO L85 PathProgramCache]: Analyzing trace with hash 929549734, now seen corresponding path program 1 times [2024-10-13 16:40:38,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:38,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046214693] [2024-10-13 16:40:38,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:38,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:38,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:38,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:40:38,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:38,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046214693] [2024-10-13 16:40:38,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046214693] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:40:38,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:40:38,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-13 16:40:38,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369257612] [2024-10-13 16:40:38,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:40:38,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 16:40:38,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:38,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 16:40:38,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-10-13 16:40:38,984 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-10-13 16:40:38,984 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) [2024-10-13 16:40:38,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:38,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-10-13 16:40:38,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:39,241 INFO L124 PetriNetUnfolderBase]: 37/176 cut-off events. [2024-10-13 16:40:39,242 INFO L125 PetriNetUnfolderBase]: For 2261/2261 co-relation queries the response was YES. [2024-10-13 16:40:39,243 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. [2024-10-13 16:40:39,244 INFO L140 encePairwiseOnDemand]: 11/21 looper letters, 75 selfloop transitions, 21 changer transitions 16/134 dead transitions. [2024-10-13 16:40:39,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 134 transitions, 1988 flow [2024-10-13 16:40:39,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-13 16:40:39,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-13 16:40:39,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 96 transitions. [2024-10-13 16:40:39,245 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2857142857142857 [2024-10-13 16:40:39,245 INFO L175 Difference]: Start difference. First operand has 166 places, 125 transitions, 1682 flow. Second operand 16 states and 96 transitions. [2024-10-13 16:40:39,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 134 transitions, 1988 flow [2024-10-13 16:40:39,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 134 transitions, 1897 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-10-13 16:40:39,259 INFO L231 Difference]: Finished difference. Result has 171 places, 113 transitions, 1478 flow [2024-10-13 16:40:39,259 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} [2024-10-13 16:40:39,260 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 147 predicate places. [2024-10-13 16:40:39,260 INFO L471 AbstractCegarLoop]: Abstraction has has 171 places, 113 transitions, 1478 flow [2024-10-13 16:40:39,260 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) [2024-10-13 16:40:39,261 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:39,261 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:40:39,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-13 16:40:39,261 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)] === [2024-10-13 16:40:39,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:39,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1182861036, now seen corresponding path program 2 times [2024-10-13 16:40:39,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:39,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599654059] [2024-10-13 16:40:39,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:39,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:39,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:39,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:40:39,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:39,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599654059] [2024-10-13 16:40:39,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599654059] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:40:39,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:40:39,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-13 16:40:39,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859560261] [2024-10-13 16:40:39,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:40:39,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 16:40:39,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:39,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 16:40:39,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-13 16:40:39,590 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-10-13 16:40:39,590 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) [2024-10-13 16:40:39,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:39,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-10-13 16:40:39,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:39,899 INFO L124 PetriNetUnfolderBase]: 31/151 cut-off events. [2024-10-13 16:40:39,899 INFO L125 PetriNetUnfolderBase]: For 1928/1928 co-relation queries the response was YES. [2024-10-13 16:40:39,900 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. [2024-10-13 16:40:39,901 INFO L140 encePairwiseOnDemand]: 11/21 looper letters, 58 selfloop transitions, 18 changer transitions 30/122 dead transitions. [2024-10-13 16:40:39,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 122 transitions, 1764 flow [2024-10-13 16:40:39,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-13 16:40:39,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-13 16:40:39,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 104 transitions. [2024-10-13 16:40:39,902 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2751322751322751 [2024-10-13 16:40:39,903 INFO L175 Difference]: Start difference. First operand has 171 places, 113 transitions, 1478 flow. Second operand 18 states and 104 transitions. [2024-10-13 16:40:39,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 122 transitions, 1764 flow [2024-10-13 16:40:39,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 122 transitions, 1681 flow, removed 11 selfloop flow, removed 13 redundant places. [2024-10-13 16:40:39,915 INFO L231 Difference]: Finished difference. Result has 167 places, 89 transitions, 1113 flow [2024-10-13 16:40:39,915 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} [2024-10-13 16:40:39,915 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 143 predicate places. [2024-10-13 16:40:39,915 INFO L471 AbstractCegarLoop]: Abstraction has has 167 places, 89 transitions, 1113 flow [2024-10-13 16:40:39,916 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) [2024-10-13 16:40:39,916 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:39,916 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:40:39,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-13 16:40:39,916 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)] === [2024-10-13 16:40:39,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:39,917 INFO L85 PathProgramCache]: Analyzing trace with hash -2027389717, now seen corresponding path program 1 times [2024-10-13 16:40:39,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:39,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318925830] [2024-10-13 16:40:39,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:39,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:39,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:40,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:40:40,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:40,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318925830] [2024-10-13 16:40:40,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318925830] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:40:40,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:40:40,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-13 16:40:40,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163337857] [2024-10-13 16:40:40,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:40:40,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 16:40:40,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:40,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 16:40:40,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-10-13 16:40:40,142 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-10-13 16:40:40,142 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) [2024-10-13 16:40:40,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:40,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-10-13 16:40:40,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:40,348 INFO L124 PetriNetUnfolderBase]: 23/119 cut-off events. [2024-10-13 16:40:40,348 INFO L125 PetriNetUnfolderBase]: For 1335/1335 co-relation queries the response was YES. [2024-10-13 16:40:40,349 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. [2024-10-13 16:40:40,349 INFO L140 encePairwiseOnDemand]: 12/21 looper letters, 53 selfloop transitions, 11 changer transitions 19/97 dead transitions. [2024-10-13 16:40:40,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 97 transitions, 1353 flow [2024-10-13 16:40:40,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-13 16:40:40,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-13 16:40:40,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 82 transitions. [2024-10-13 16:40:40,351 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.30036630036630035 [2024-10-13 16:40:40,351 INFO L175 Difference]: Start difference. First operand has 167 places, 89 transitions, 1113 flow. Second operand 13 states and 82 transitions. [2024-10-13 16:40:40,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 97 transitions, 1353 flow [2024-10-13 16:40:40,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 97 transitions, 1157 flow, removed 12 selfloop flow, removed 33 redundant places. [2024-10-13 16:40:40,359 INFO L231 Difference]: Finished difference. Result has 134 places, 75 transitions, 780 flow [2024-10-13 16:40:40,360 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} [2024-10-13 16:40:40,360 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 110 predicate places. [2024-10-13 16:40:40,360 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 75 transitions, 780 flow [2024-10-13 16:40:40,360 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) [2024-10-13 16:40:40,360 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:40,360 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:40:40,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-13 16:40:40,361 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)] === [2024-10-13 16:40:40,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:40,362 INFO L85 PathProgramCache]: Analyzing trace with hash -762944143, now seen corresponding path program 2 times [2024-10-13 16:40:40,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:40,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832185207] [2024-10-13 16:40:40,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:40,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:40,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:40,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:40:40,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:40,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832185207] [2024-10-13 16:40:40,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832185207] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:40:40,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:40:40,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-13 16:40:40,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174795719] [2024-10-13 16:40:40,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:40:40,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 16:40:40,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:40,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 16:40:40,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-13 16:40:40,591 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-10-13 16:40:40,592 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) [2024-10-13 16:40:40,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:40,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-10-13 16:40:40,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:40,808 INFO L124 PetriNetUnfolderBase]: 17/91 cut-off events. [2024-10-13 16:40:40,808 INFO L125 PetriNetUnfolderBase]: For 699/699 co-relation queries the response was YES. [2024-10-13 16:40:40,808 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. [2024-10-13 16:40:40,809 INFO L140 encePairwiseOnDemand]: 12/21 looper letters, 36 selfloop transitions, 7 changer transitions 31/82 dead transitions. [2024-10-13 16:40:40,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 82 transitions, 984 flow [2024-10-13 16:40:40,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-13 16:40:40,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-13 16:40:40,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 84 transitions. [2024-10-13 16:40:40,810 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2857142857142857 [2024-10-13 16:40:40,810 INFO L175 Difference]: Start difference. First operand has 134 places, 75 transitions, 780 flow. Second operand 14 states and 84 transitions. [2024-10-13 16:40:40,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 82 transitions, 984 flow [2024-10-13 16:40:40,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 82 transitions, 911 flow, removed 10 selfloop flow, removed 13 redundant places. [2024-10-13 16:40:40,816 INFO L231 Difference]: Finished difference. Result has 125 places, 49 transitions, 449 flow [2024-10-13 16:40:40,816 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} [2024-10-13 16:40:40,817 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 101 predicate places. [2024-10-13 16:40:40,817 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 49 transitions, 449 flow [2024-10-13 16:40:40,817 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) [2024-10-13 16:40:40,817 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:40,817 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:40:40,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-13 16:40:40,817 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)] === [2024-10-13 16:40:40,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:40,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1702095883, now seen corresponding path program 3 times [2024-10-13 16:40:40,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:40,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284728195] [2024-10-13 16:40:40,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:40,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:40,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:41,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:40:41,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:41,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284728195] [2024-10-13 16:40:41,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284728195] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:40:41,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:40:41,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-13 16:40:41,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302648249] [2024-10-13 16:40:41,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:40:41,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 16:40:41,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:41,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 16:40:41,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-10-13 16:40:41,030 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-10-13 16:40:41,031 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) [2024-10-13 16:40:41,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:41,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-10-13 16:40:41,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:41,193 INFO L124 PetriNetUnfolderBase]: 9/56 cut-off events. [2024-10-13 16:40:41,193 INFO L125 PetriNetUnfolderBase]: For 274/274 co-relation queries the response was YES. [2024-10-13 16:40:41,194 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. [2024-10-13 16:40:41,194 INFO L140 encePairwiseOnDemand]: 12/21 looper letters, 25 selfloop transitions, 8 changer transitions 13/52 dead transitions. [2024-10-13 16:40:41,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 52 transitions, 565 flow [2024-10-13 16:40:41,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-13 16:40:41,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-13 16:40:41,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 69 transitions. [2024-10-13 16:40:41,195 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.27380952380952384 [2024-10-13 16:40:41,195 INFO L175 Difference]: Start difference. First operand has 125 places, 49 transitions, 449 flow. Second operand 12 states and 69 transitions. [2024-10-13 16:40:41,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 52 transitions, 565 flow [2024-10-13 16:40:41,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 52 transitions, 468 flow, removed 13 selfloop flow, removed 19 redundant places. [2024-10-13 16:40:41,198 INFO L231 Difference]: Finished difference. Result has 98 places, 37 transitions, 288 flow [2024-10-13 16:40:41,198 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} [2024-10-13 16:40:41,198 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 74 predicate places. [2024-10-13 16:40:41,199 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 37 transitions, 288 flow [2024-10-13 16:40:41,199 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) [2024-10-13 16:40:41,199 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:41,199 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:40:41,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-13 16:40:41,199 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)] === [2024-10-13 16:40:41,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:41,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1215757956, now seen corresponding path program 1 times [2024-10-13 16:40:41,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:41,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768056134] [2024-10-13 16:40:41,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:41,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:41,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:41,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:40:41,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:41,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768056134] [2024-10-13 16:40:41,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768056134] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:40:41,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:40:41,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-13 16:40:41,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621614647] [2024-10-13 16:40:41,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:40:41,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 16:40:41,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:41,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 16:40:41,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-13 16:40:41,407 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2024-10-13 16:40:41,408 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) [2024-10-13 16:40:41,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:41,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2024-10-13 16:40:41,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:41,564 INFO L124 PetriNetUnfolderBase]: 5/42 cut-off events. [2024-10-13 16:40:41,564 INFO L125 PetriNetUnfolderBase]: For 111/111 co-relation queries the response was YES. [2024-10-13 16:40:41,564 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. [2024-10-13 16:40:41,564 INFO L140 encePairwiseOnDemand]: 11/21 looper letters, 20 selfloop transitions, 17 changer transitions 0/39 dead transitions. [2024-10-13 16:40:41,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 39 transitions, 368 flow [2024-10-13 16:40:41,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-13 16:40:41,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-13 16:40:41,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 57 transitions. [2024-10-13 16:40:41,565 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2261904761904762 [2024-10-13 16:40:41,565 INFO L175 Difference]: Start difference. First operand has 98 places, 37 transitions, 288 flow. Second operand 12 states and 57 transitions. [2024-10-13 16:40:41,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 39 transitions, 368 flow [2024-10-13 16:40:41,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 39 transitions, 304 flow, removed 5 selfloop flow, removed 20 redundant places. [2024-10-13 16:40:41,567 INFO L231 Difference]: Finished difference. Result has 73 places, 36 transitions, 252 flow [2024-10-13 16:40:41,567 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} [2024-10-13 16:40:41,568 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 49 predicate places. [2024-10-13 16:40:41,568 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 36 transitions, 252 flow [2024-10-13 16:40:41,568 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) [2024-10-13 16:40:41,568 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:41,568 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:40:41,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-13 16:40:41,569 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)] === [2024-10-13 16:40:41,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:41,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1228718066, now seen corresponding path program 3 times [2024-10-13 16:40:41,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:41,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525441739] [2024-10-13 16:40:41,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:41,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:41,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:41,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:40:41,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:41,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525441739] [2024-10-13 16:40:41,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525441739] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:40:41,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:40:41,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-13 16:40:41,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777908574] [2024-10-13 16:40:41,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:40:41,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 16:40:41,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:41,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 16:40:41,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-10-13 16:40:41,777 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-10-13 16:40:41,778 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) [2024-10-13 16:40:41,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:41,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-10-13 16:40:41,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:41,931 INFO L124 PetriNetUnfolderBase]: 4/38 cut-off events. [2024-10-13 16:40:41,931 INFO L125 PetriNetUnfolderBase]: For 78/78 co-relation queries the response was YES. [2024-10-13 16:40:41,931 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. [2024-10-13 16:40:41,931 INFO L140 encePairwiseOnDemand]: 12/21 looper letters, 8 selfloop transitions, 4 changer transitions 23/37 dead transitions. [2024-10-13 16:40:41,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 37 transitions, 318 flow [2024-10-13 16:40:41,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-13 16:40:41,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-13 16:40:41,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 68 transitions. [2024-10-13 16:40:41,933 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2490842490842491 [2024-10-13 16:40:41,933 INFO L175 Difference]: Start difference. First operand has 73 places, 36 transitions, 252 flow. Second operand 13 states and 68 transitions. [2024-10-13 16:40:41,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 37 transitions, 318 flow [2024-10-13 16:40:41,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 37 transitions, 276 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-10-13 16:40:41,934 INFO L231 Difference]: Finished difference. Result has 72 places, 14 transitions, 71 flow [2024-10-13 16:40:41,935 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} [2024-10-13 16:40:41,935 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 48 predicate places. [2024-10-13 16:40:41,935 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 14 transitions, 71 flow [2024-10-13 16:40:41,935 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) [2024-10-13 16:40:41,935 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:41,935 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:40:41,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-13 16:40:41,935 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)] === [2024-10-13 16:40:41,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:41,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1375230906, now seen corresponding path program 1 times [2024-10-13 16:40:41,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:41,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948509018] [2024-10-13 16:40:41,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:41,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:41,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:42,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:40:42,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:42,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948509018] [2024-10-13 16:40:42,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948509018] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:40:42,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:40:42,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-13 16:40:42,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232485249] [2024-10-13 16:40:42,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:40:42,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 16:40:42,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:42,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 16:40:42,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-10-13 16:40:42,164 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-10-13 16:40:42,164 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) [2024-10-13 16:40:42,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:42,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-10-13 16:40:42,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:42,228 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2024-10-13 16:40:42,228 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-10-13 16:40:42,228 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. [2024-10-13 16:40:42,229 INFO L140 encePairwiseOnDemand]: 13/21 looper letters, 0 selfloop transitions, 0 changer transitions 13/13 dead transitions. [2024-10-13 16:40:42,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 13 transitions, 89 flow [2024-10-13 16:40:42,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 16:40:42,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 16:40:42,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 39 transitions. [2024-10-13 16:40:42,229 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.20634920634920634 [2024-10-13 16:40:42,230 INFO L175 Difference]: Start difference. First operand has 72 places, 14 transitions, 71 flow. Second operand 9 states and 39 transitions. [2024-10-13 16:40:42,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 13 transitions, 89 flow [2024-10-13 16:40:42,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 13 transitions, 55 flow, removed 1 selfloop flow, removed 17 redundant places. [2024-10-13 16:40:42,230 INFO L231 Difference]: Finished difference. Result has 32 places, 0 transitions, 0 flow [2024-10-13 16:40:42,230 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} [2024-10-13 16:40:42,231 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 8 predicate places. [2024-10-13 16:40:42,231 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 0 transitions, 0 flow [2024-10-13 16:40:42,231 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) [2024-10-13 16:40:42,234 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 7 remaining) [2024-10-13 16:40:42,236 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 7 remaining) [2024-10-13 16:40:42,236 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2024-10-13 16:40:42,237 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 7 remaining) [2024-10-13 16:40:42,237 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 7 remaining) [2024-10-13 16:40:42,237 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 7 remaining) [2024-10-13 16:40:42,237 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 7 remaining) [2024-10-13 16:40:42,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-13 16:40:42,238 INFO L407 BasicCegarLoop]: Path program histogram: [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:40:42,244 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-13 16:40:42,244 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-13 16:40:42,248 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 04:40:42 BasicIcfg [2024-10-13 16:40:42,248 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-13 16:40:42,249 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-13 16:40:42,249 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-13 16:40:42,249 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-13 16:40:42,249 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:40:30" (3/4) ... [2024-10-13 16:40:42,250 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-13 16:40:42,254 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2024-10-13 16:40:42,258 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2024-10-13 16:40:42,258 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2024-10-13 16:40:42,258 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-10-13 16:40:42,336 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-13 16:40:42,337 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-13 16:40:42,337 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-13 16:40:42,337 INFO L158 Benchmark]: Toolchain (without parser) took 12637.52ms. Allocated memory was 159.4MB in the beginning and 237.0MB in the end (delta: 77.6MB). Free memory was 122.5MB in the beginning and 137.5MB in the end (delta: -15.0MB). Peak memory consumption was 65.7MB. Max. memory is 16.1GB. [2024-10-13 16:40:42,338 INFO L158 Benchmark]: CDTParser took 0.86ms. Allocated memory is still 104.9MB. Free memory is still 77.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-13 16:40:42,338 INFO L158 Benchmark]: CACSL2BoogieTranslator took 564.23ms. Allocated memory is still 159.4MB. Free memory was 122.5MB in the beginning and 95.2MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2024-10-13 16:40:42,339 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.93ms. Allocated memory is still 159.4MB. Free memory was 95.2MB in the beginning and 93.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-13 16:40:42,339 INFO L158 Benchmark]: Boogie Preprocessor took 46.66ms. Allocated memory is still 159.4MB. Free memory was 93.1MB in the beginning and 91.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-13 16:40:42,340 INFO L158 Benchmark]: RCFGBuilder took 438.26ms. Allocated memory is still 159.4MB. Free memory was 91.0MB in the beginning and 70.8MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-10-13 16:40:42,340 INFO L158 Benchmark]: TraceAbstraction took 11450.08ms. Allocated memory was 159.4MB in the beginning and 237.0MB in the end (delta: 77.6MB). Free memory was 70.1MB in the beginning and 141.7MB in the end (delta: -71.6MB). Peak memory consumption was 9.0MB. Max. memory is 16.1GB. [2024-10-13 16:40:42,340 INFO L158 Benchmark]: Witness Printer took 88.30ms. Allocated memory is still 237.0MB. Free memory was 141.7MB in the beginning and 137.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-13 16:40:42,342 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.86ms. Allocated memory is still 104.9MB. Free memory is still 77.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 564.23ms. Allocated memory is still 159.4MB. Free memory was 122.5MB in the beginning and 95.2MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.93ms. Allocated memory is still 159.4MB. Free memory was 95.2MB in the beginning and 93.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.66ms. Allocated memory is still 159.4MB. Free memory was 93.1MB in the beginning and 91.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 438.26ms. Allocated memory is still 159.4MB. Free memory was 91.0MB in the beginning and 70.8MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 11450.08ms. Allocated memory was 159.4MB in the beginning and 237.0MB in the end (delta: 77.6MB). Free memory was 70.1MB in the beginning and 141.7MB in the end (delta: -71.6MB). Peak memory consumption was 9.0MB. Max. memory is 16.1GB. * Witness Printer took 88.30ms. Allocated memory is still 237.0MB. Free memory was 141.7MB in the beginning and 137.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. 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: 11.4s, OverallIterations: 25, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 5.6s, 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, 5.0s 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! [2024-10-13 16:40:42,368 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