./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_05-funloop_hard2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_05-funloop_hard2.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 9e83a031749850377e0f1ecd2c361048b8f87f697f146600048034d31c93bd9a --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 23:56:01,562 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 23:56:01,614 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-11 23:56:01,619 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 23:56:01,620 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 23:56:01,657 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 23:56:01,657 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 23:56:01,658 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 23:56:01,658 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 23:56:01,665 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 23:56:01,666 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 23:56:01,666 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 23:56:01,666 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 23:56:01,666 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 23:56:01,667 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 23:56:01,667 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 23:56:01,667 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 23:56:01,667 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 23:56:01,668 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 23:56:01,668 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 23:56:01,668 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 23:56:01,670 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 23:56:01,670 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 23:56:01,670 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 23:56:01,670 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 23:56:01,671 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-11 23:56:01,671 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 23:56:01,671 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 23:56:01,671 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 23:56:01,671 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 23:56:01,672 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 23:56:01,672 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 23:56:01,672 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 23:56:01,672 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 23:56:01,672 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 23:56:01,680 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 23:56:01,680 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 23:56:01,680 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 23:56:01,681 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 23:56:01,681 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 23:56:01,681 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 23:56:01,681 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 23:56:01,681 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 23:56:01,681 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 23:56:01,681 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e83a031749850377e0f1ecd2c361048b8f87f697f146600048034d31c93bd9a [2024-10-11 23:56:01,882 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 23:56:01,901 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 23:56:01,904 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 23:56:01,905 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 23:56:01,905 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 23:56:01,906 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_05-funloop_hard2.i [2024-10-11 23:56:03,182 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 23:56:03,372 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 23:56:03,372 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_05-funloop_hard2.i [2024-10-11 23:56:03,388 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/e04465262/4a25bf575b0647e7a5c67c43bacad7fa/FLAG10151842d [2024-10-11 23:56:03,737 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/e04465262/4a25bf575b0647e7a5c67c43bacad7fa [2024-10-11 23:56:03,739 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 23:56:03,740 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 23:56:03,741 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 23:56:03,741 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 23:56:03,745 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 23:56:03,746 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 11:56:03" (1/1) ... [2024-10-11 23:56:03,746 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35e8ebd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:56:03, skipping insertion in model container [2024-10-11 23:56:03,746 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 11:56:03" (1/1) ... [2024-10-11 23:56:03,786 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 23:56:04,152 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 23:56:04,187 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 23:56:04,228 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 23:56:04,279 INFO L204 MainTranslator]: Completed translation [2024-10-11 23:56:04,280 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:56:04 WrapperNode [2024-10-11 23:56:04,281 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 23:56:04,281 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 23:56:04,282 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 23:56:04,282 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 23:56:04,287 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:56:04" (1/1) ... [2024-10-11 23:56:04,304 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:56:04" (1/1) ... [2024-10-11 23:56:04,326 INFO L138 Inliner]: procedures = 262, calls = 14, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 96 [2024-10-11 23:56:04,328 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 23:56:04,328 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 23:56:04,329 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 23:56:04,329 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 23:56:04,337 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:56:04" (1/1) ... [2024-10-11 23:56:04,337 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:56:04" (1/1) ... [2024-10-11 23:56:04,340 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:56:04" (1/1) ... [2024-10-11 23:56:04,358 INFO L175 MemorySlicer]: Split 7 memory accesses to 1 slices as follows [7]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 4 writes are split as follows [4]. [2024-10-11 23:56:04,358 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:56:04" (1/1) ... [2024-10-11 23:56:04,358 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:56:04" (1/1) ... [2024-10-11 23:56:04,362 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:56:04" (1/1) ... [2024-10-11 23:56:04,367 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:56:04" (1/1) ... [2024-10-11 23:56:04,368 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:56:04" (1/1) ... [2024-10-11 23:56:04,373 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:56:04" (1/1) ... [2024-10-11 23:56:04,375 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 23:56:04,375 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 23:56:04,375 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 23:56:04,375 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 23:56:04,376 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:56:04" (1/1) ... [2024-10-11 23:56:04,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 23:56:04,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:56:04,407 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 23:56:04,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 23:56:04,445 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-11 23:56:04,445 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-11 23:56:04,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-11 23:56:04,445 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-11 23:56:04,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 23:56:04,446 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-11 23:56:04,446 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-11 23:56:04,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 23:56:04,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 23:56:04,448 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 23:56:04,551 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 23:56:04,553 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 23:56:04,740 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 23:56:04,741 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 23:56:04,824 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 23:56:04,824 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-11 23:56:04,824 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 11:56:04 BoogieIcfgContainer [2024-10-11 23:56:04,824 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 23:56:04,826 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 23:56:04,826 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 23:56:04,829 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 23:56:04,829 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 11:56:03" (1/3) ... [2024-10-11 23:56:04,829 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ea211a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 11:56:04, skipping insertion in model container [2024-10-11 23:56:04,830 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:56:04" (2/3) ... [2024-10-11 23:56:04,830 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ea211a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 11:56:04, skipping insertion in model container [2024-10-11 23:56:04,830 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 11:56:04" (3/3) ... [2024-10-11 23:56:04,831 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_05-funloop_hard2.i [2024-10-11 23:56:04,846 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 23:56:04,846 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-10-11 23:56:04,847 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 23:56:04,887 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 23:56:04,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 47 transitions, 98 flow [2024-10-11 23:56:04,938 INFO L124 PetriNetUnfolderBase]: 3/46 cut-off events. [2024-10-11 23:56:04,938 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 23:56:04,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 46 events. 3/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 111 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2024-10-11 23:56:04,941 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 47 transitions, 98 flow [2024-10-11 23:56:04,944 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 46 transitions, 95 flow [2024-10-11 23:56:04,951 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 23:56:04,955 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;@3c6cca84, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 23:56:04,955 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-10-11 23:56:04,957 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 23:56:04,958 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-11 23:56:04,958 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 23:56:04,958 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:04,958 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 23:56:04,959 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-11 23:56:04,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:04,963 INFO L85 PathProgramCache]: Analyzing trace with hash 289263, now seen corresponding path program 1 times [2024-10-11 23:56:04,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:04,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603656031] [2024-10-11 23:56:04,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:04,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:05,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:05,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:56:05,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:05,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603656031] [2024-10-11 23:56:05,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603656031] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:56:05,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:56:05,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:56:05,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736410057] [2024-10-11 23:56:05,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:56:05,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:56:05,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:05,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:56:05,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:56:05,181 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-11 23:56:05,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 46 transitions, 95 flow. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:05,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:05,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-11 23:56:05,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:05,320 INFO L124 PetriNetUnfolderBase]: 128/382 cut-off events. [2024-10-11 23:56:05,320 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 23:56:05,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 645 conditions, 382 events. 128/382 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2034 event pairs, 104 based on Foata normal form. 1/313 useless extension candidates. Maximal degree in co-relation 627. Up to 255 conditions per place. [2024-10-11 23:56:05,326 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 25 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2024-10-11 23:56:05,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 45 transitions, 151 flow [2024-10-11 23:56:05,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:56:05,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:56:05,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 98 transitions. [2024-10-11 23:56:05,337 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5212765957446809 [2024-10-11 23:56:05,339 INFO L175 Difference]: Start difference. First operand has 47 places, 46 transitions, 95 flow. Second operand 4 states and 98 transitions. [2024-10-11 23:56:05,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 45 transitions, 151 flow [2024-10-11 23:56:05,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 45 transitions, 150 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 23:56:05,345 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 100 flow [2024-10-11 23:56:05,346 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=100, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2024-10-11 23:56:05,349 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 1 predicate places. [2024-10-11 23:56:05,349 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 100 flow [2024-10-11 23:56:05,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:05,350 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:05,350 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-10-11 23:56:05,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 23:56:05,350 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-11 23:56:05,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:05,351 INFO L85 PathProgramCache]: Analyzing trace with hash 8967419, now seen corresponding path program 1 times [2024-10-11 23:56:05,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:05,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818501483] [2024-10-11 23:56:05,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:05,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:05,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:05,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:56:05,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:05,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818501483] [2024-10-11 23:56:05,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818501483] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:56:05,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:56:05,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:56:05,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165106968] [2024-10-11 23:56:05,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:56:05,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:56:05,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:05,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:56:05,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:56:05,404 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-11 23:56:05,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:05,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:05,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-11 23:56:05,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:05,511 INFO L124 PetriNetUnfolderBase]: 128/385 cut-off events. [2024-10-11 23:56:05,511 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 23:56:05,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 656 conditions, 385 events. 128/385 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2028 event pairs, 104 based on Foata normal form. 1/317 useless extension candidates. Maximal degree in co-relation 631. Up to 259 conditions per place. [2024-10-11 23:56:05,515 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 28 selfloop transitions, 3 changer transitions 0/47 dead transitions. [2024-10-11 23:56:05,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 47 transitions, 170 flow [2024-10-11 23:56:05,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:56:05,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:56:05,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 101 transitions. [2024-10-11 23:56:05,518 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5372340425531915 [2024-10-11 23:56:05,519 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 100 flow. Second operand 4 states and 101 transitions. [2024-10-11 23:56:05,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 47 transitions, 170 flow [2024-10-11 23:56:05,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 47 transitions, 158 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 23:56:05,521 INFO L231 Difference]: Finished difference. Result has 50 places, 47 transitions, 114 flow [2024-10-11 23:56:05,522 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=114, PETRI_PLACES=50, PETRI_TRANSITIONS=47} [2024-10-11 23:56:05,523 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 3 predicate places. [2024-10-11 23:56:05,524 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 47 transitions, 114 flow [2024-10-11 23:56:05,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:05,524 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:05,524 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-11 23:56:05,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 23:56:05,525 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-11 23:56:05,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:05,526 INFO L85 PathProgramCache]: Analyzing trace with hash 860675524, now seen corresponding path program 1 times [2024-10-11 23:56:05,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:05,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364822702] [2024-10-11 23:56:05,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:05,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:05,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:05,572 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 23:56:05,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:05,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364822702] [2024-10-11 23:56:05,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364822702] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:56:05,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:56:05,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:56:05,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224840173] [2024-10-11 23:56:05,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:56:05,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 23:56:05,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:05,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 23:56:05,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 23:56:05,578 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-11 23:56:05,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 47 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:05,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:05,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-11 23:56:05,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:05,682 INFO L124 PetriNetUnfolderBase]: 128/384 cut-off events. [2024-10-11 23:56:05,683 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 23:56:05,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 658 conditions, 384 events. 128/384 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2018 event pairs, 104 based on Foata normal form. 0/315 useless extension candidates. Maximal degree in co-relation 641. Up to 258 conditions per place. [2024-10-11 23:56:05,686 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 26 selfloop transitions, 4 changer transitions 0/46 dead transitions. [2024-10-11 23:56:05,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 46 transitions, 170 flow [2024-10-11 23:56:05,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 23:56:05,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 23:56:05,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-10-11 23:56:05,689 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5673758865248227 [2024-10-11 23:56:05,689 INFO L175 Difference]: Start difference. First operand has 50 places, 47 transitions, 114 flow. Second operand 3 states and 80 transitions. [2024-10-11 23:56:05,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 46 transitions, 170 flow [2024-10-11 23:56:05,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 46 transitions, 168 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 23:56:05,690 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 116 flow [2024-10-11 23:56:05,691 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2024-10-11 23:56:05,692 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 3 predicate places. [2024-10-11 23:56:05,692 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 116 flow [2024-10-11 23:56:05,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:05,693 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:05,693 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:56:05,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 23:56:05,693 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-11 23:56:05,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:05,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1403606696, now seen corresponding path program 1 times [2024-10-11 23:56:05,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:05,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919068190] [2024-10-11 23:56:05,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:05,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:05,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:05,780 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:56:05,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:05,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919068190] [2024-10-11 23:56:05,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919068190] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:56:05,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294959606] [2024-10-11 23:56:05,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:05,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:56:05,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:56:05,783 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:56:05,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 23:56:05,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:05,838 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 23:56:05,840 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:56:05,870 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:56:05,871 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:56:05,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:56:05,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294959606] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:56:05,902 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:56:05,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-10-11 23:56:05,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718077986] [2024-10-11 23:56:05,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:56:05,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 23:56:05,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:05,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 23:56:05,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-10-11 23:56:05,913 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-11 23:56:05,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 116 flow. Second operand has 8 states, 8 states have (on average 18.625) internal successors, (149), 8 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:05,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:05,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-11 23:56:05,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:06,013 INFO L124 PetriNetUnfolderBase]: 128/388 cut-off events. [2024-10-11 23:56:06,013 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-10-11 23:56:06,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 674 conditions, 388 events. 128/388 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2015 event pairs, 104 based on Foata normal form. 2/322 useless extension candidates. Maximal degree in co-relation 638. Up to 256 conditions per place. [2024-10-11 23:56:06,015 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 26 selfloop transitions, 7 changer transitions 0/49 dead transitions. [2024-10-11 23:56:06,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 49 transitions, 200 flow [2024-10-11 23:56:06,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 23:56:06,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 23:56:06,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2024-10-11 23:56:06,016 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46808510638297873 [2024-10-11 23:56:06,016 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 116 flow. Second operand 7 states and 154 transitions. [2024-10-11 23:56:06,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 49 transitions, 200 flow [2024-10-11 23:56:06,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 49 transitions, 186 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 23:56:06,018 INFO L231 Difference]: Finished difference. Result has 56 places, 49 transitions, 145 flow [2024-10-11 23:56:06,018 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=145, PETRI_PLACES=56, PETRI_TRANSITIONS=49} [2024-10-11 23:56:06,018 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 9 predicate places. [2024-10-11 23:56:06,018 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 49 transitions, 145 flow [2024-10-11 23:56:06,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.625) internal successors, (149), 8 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:06,019 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:06,019 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:56:06,032 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 23:56:06,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:56:06,224 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-11 23:56:06,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:06,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1887628104, now seen corresponding path program 2 times [2024-10-11 23:56:06,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:06,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754308566] [2024-10-11 23:56:06,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:06,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:06,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:06,339 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:56:06,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:06,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754308566] [2024-10-11 23:56:06,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754308566] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:56:06,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148842650] [2024-10-11 23:56:06,340 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 23:56:06,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:56:06,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:56:06,342 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:56:06,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 23:56:06,392 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 23:56:06,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 23:56:06,393 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-11 23:56:06,394 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:56:06,419 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2024-10-11 23:56:06,498 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2024-10-11 23:56:06,510 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 23:56:06,511 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 23:56:06,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148842650] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:56:06,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 23:56:06,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 11 [2024-10-11 23:56:06,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636050990] [2024-10-11 23:56:06,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:56:06,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 23:56:06,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:06,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 23:56:06,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-10-11 23:56:06,520 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-11 23:56:06,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 49 transitions, 145 flow. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:06,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:06,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-11 23:56:06,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:06,707 INFO L124 PetriNetUnfolderBase]: 244/583 cut-off events. [2024-10-11 23:56:06,707 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-11 23:56:06,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1088 conditions, 583 events. 244/583 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2933 event pairs, 38 based on Foata normal form. 21/500 useless extension candidates. Maximal degree in co-relation 1047. Up to 310 conditions per place. [2024-10-11 23:56:06,710 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 73 selfloop transitions, 12 changer transitions 0/99 dead transitions. [2024-10-11 23:56:06,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 99 transitions, 415 flow [2024-10-11 23:56:06,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 23:56:06,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 23:56:06,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 184 transitions. [2024-10-11 23:56:06,711 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6524822695035462 [2024-10-11 23:56:06,712 INFO L175 Difference]: Start difference. First operand has 56 places, 49 transitions, 145 flow. Second operand 6 states and 184 transitions. [2024-10-11 23:56:06,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 99 transitions, 415 flow [2024-10-11 23:56:06,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 99 transitions, 401 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-10-11 23:56:06,714 INFO L231 Difference]: Finished difference. Result has 63 places, 62 transitions, 225 flow [2024-10-11 23:56:06,714 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=225, PETRI_PLACES=63, PETRI_TRANSITIONS=62} [2024-10-11 23:56:06,715 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 16 predicate places. [2024-10-11 23:56:06,715 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 62 transitions, 225 flow [2024-10-11 23:56:06,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:06,715 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:06,715 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:56:06,727 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 23:56:06,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:56:06,916 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-11 23:56:06,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:06,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1854188663, now seen corresponding path program 1 times [2024-10-11 23:56:06,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:06,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276725078] [2024-10-11 23:56:06,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:06,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:06,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:06,943 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 23:56:06,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:06,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276725078] [2024-10-11 23:56:06,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276725078] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:56:06,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:56:06,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 23:56:06,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569146435] [2024-10-11 23:56:06,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:56:06,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 23:56:06,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:06,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 23:56:06,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 23:56:06,944 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 47 [2024-10-11 23:56:06,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 62 transitions, 225 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:06,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:06,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 47 [2024-10-11 23:56:06,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:07,036 INFO L124 PetriNetUnfolderBase]: 235/663 cut-off events. [2024-10-11 23:56:07,036 INFO L125 PetriNetUnfolderBase]: For 216/245 co-relation queries the response was YES. [2024-10-11 23:56:07,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1371 conditions, 663 events. 235/663 cut-off events. For 216/245 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3603 event pairs, 73 based on Foata normal form. 9/609 useless extension candidates. Maximal degree in co-relation 1327. Up to 297 conditions per place. [2024-10-11 23:56:07,039 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 61 selfloop transitions, 2 changer transitions 0/80 dead transitions. [2024-10-11 23:56:07,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 80 transitions, 401 flow [2024-10-11 23:56:07,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 23:56:07,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 23:56:07,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-10-11 23:56:07,040 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.723404255319149 [2024-10-11 23:56:07,040 INFO L175 Difference]: Start difference. First operand has 63 places, 62 transitions, 225 flow. Second operand 3 states and 102 transitions. [2024-10-11 23:56:07,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 80 transitions, 401 flow [2024-10-11 23:56:07,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 80 transitions, 401 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 23:56:07,043 INFO L231 Difference]: Finished difference. Result has 66 places, 60 transitions, 219 flow [2024-10-11 23:56:07,043 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=219, PETRI_PLACES=66, PETRI_TRANSITIONS=60} [2024-10-11 23:56:07,043 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 19 predicate places. [2024-10-11 23:56:07,043 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 60 transitions, 219 flow [2024-10-11 23:56:07,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:07,044 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:07,044 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:56:07,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 23:56:07,044 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-11 23:56:07,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:07,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1854156683, now seen corresponding path program 1 times [2024-10-11 23:56:07,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:07,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402645692] [2024-10-11 23:56:07,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:07,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:07,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:07,142 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:56:07,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:07,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402645692] [2024-10-11 23:56:07,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402645692] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:56:07,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158888923] [2024-10-11 23:56:07,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:07,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:56:07,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:56:07,144 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:56:07,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 23:56:07,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:07,202 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 23:56:07,202 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:56:07,222 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:56:07,225 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:56:07,297 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:56:07,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158888923] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:56:07,298 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:56:07,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-10-11 23:56:07,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437478831] [2024-10-11 23:56:07,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:56:07,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-11 23:56:07,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:07,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-11 23:56:07,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2024-10-11 23:56:07,312 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-11 23:56:07,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 60 transitions, 219 flow. Second operand has 16 states, 16 states have (on average 18.3125) internal successors, (293), 16 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:07,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:07,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-11 23:56:07,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:07,505 INFO L124 PetriNetUnfolderBase]: 235/695 cut-off events. [2024-10-11 23:56:07,505 INFO L125 PetriNetUnfolderBase]: For 286/306 co-relation queries the response was YES. [2024-10-11 23:56:07,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1512 conditions, 695 events. 235/695 cut-off events. For 286/306 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3805 event pairs, 147 based on Foata normal form. 7/649 useless extension candidates. Maximal degree in co-relation 1430. Up to 467 conditions per place. [2024-10-11 23:56:07,508 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 36 selfloop transitions, 15 changer transitions 0/68 dead transitions. [2024-10-11 23:56:07,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 68 transitions, 369 flow [2024-10-11 23:56:07,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-11 23:56:07,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-11 23:56:07,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 300 transitions. [2024-10-11 23:56:07,509 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.425531914893617 [2024-10-11 23:56:07,510 INFO L175 Difference]: Start difference. First operand has 66 places, 60 transitions, 219 flow. Second operand 15 states and 300 transitions. [2024-10-11 23:56:07,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 68 transitions, 369 flow [2024-10-11 23:56:07,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 68 transitions, 367 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 23:56:07,512 INFO L231 Difference]: Finished difference. Result has 83 places, 68 transitions, 314 flow [2024-10-11 23:56:07,512 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=314, PETRI_PLACES=83, PETRI_TRANSITIONS=68} [2024-10-11 23:56:07,513 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 36 predicate places. [2024-10-11 23:56:07,513 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 68 transitions, 314 flow [2024-10-11 23:56:07,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 18.3125) internal successors, (293), 16 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:07,513 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:07,513 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:56:07,525 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-11 23:56:07,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:56:07,715 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-11 23:56:07,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:07,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1606643915, now seen corresponding path program 2 times [2024-10-11 23:56:07,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:07,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734224089] [2024-10-11 23:56:07,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:07,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:07,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:07,911 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:56:07,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:07,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734224089] [2024-10-11 23:56:07,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734224089] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:56:07,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66044252] [2024-10-11 23:56:07,912 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 23:56:07,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:56:07,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:56:07,918 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:56:07,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 23:56:07,967 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 23:56:07,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 23:56:07,968 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-11 23:56:07,969 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:56:07,973 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2024-10-11 23:56:08,086 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2024-10-11 23:56:08,099 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-11 23:56:08,099 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 23:56:08,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66044252] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:56:08,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 23:56:08,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [16] total 19 [2024-10-11 23:56:08,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186408497] [2024-10-11 23:56:08,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:56:08,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 23:56:08,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:08,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 23:56:08,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2024-10-11 23:56:08,107 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-11 23:56:08,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 68 transitions, 314 flow. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:08,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:08,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-11 23:56:08,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:08,305 INFO L124 PetriNetUnfolderBase]: 294/783 cut-off events. [2024-10-11 23:56:08,305 INFO L125 PetriNetUnfolderBase]: For 336/363 co-relation queries the response was YES. [2024-10-11 23:56:08,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1767 conditions, 783 events. 294/783 cut-off events. For 336/363 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 4257 event pairs, 67 based on Foata normal form. 18/764 useless extension candidates. Maximal degree in co-relation 1661. Up to 459 conditions per place. [2024-10-11 23:56:08,310 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 74 selfloop transitions, 12 changer transitions 0/101 dead transitions. [2024-10-11 23:56:08,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 101 transitions, 592 flow [2024-10-11 23:56:08,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 23:56:08,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 23:56:08,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 169 transitions. [2024-10-11 23:56:08,311 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.599290780141844 [2024-10-11 23:56:08,311 INFO L175 Difference]: Start difference. First operand has 83 places, 68 transitions, 314 flow. Second operand 6 states and 169 transitions. [2024-10-11 23:56:08,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 101 transitions, 592 flow [2024-10-11 23:56:08,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 101 transitions, 574 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-10-11 23:56:08,316 INFO L231 Difference]: Finished difference. Result has 89 places, 75 transitions, 384 flow [2024-10-11 23:56:08,316 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=384, PETRI_PLACES=89, PETRI_TRANSITIONS=75} [2024-10-11 23:56:08,318 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 42 predicate places. [2024-10-11 23:56:08,318 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 75 transitions, 384 flow [2024-10-11 23:56:08,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:08,319 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:08,319 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:56:08,332 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-11 23:56:08,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-10-11 23:56:08,524 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-11 23:56:08,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:08,524 INFO L85 PathProgramCache]: Analyzing trace with hash -696031829, now seen corresponding path program 1 times [2024-10-11 23:56:08,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:08,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633690225] [2024-10-11 23:56:08,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:08,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:08,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:08,641 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-11 23:56:08,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:08,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633690225] [2024-10-11 23:56:08,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633690225] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:56:08,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:56:08,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 23:56:08,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640934914] [2024-10-11 23:56:08,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:56:08,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 23:56:08,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:08,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 23:56:08,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 23:56:08,647 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-11 23:56:08,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 75 transitions, 384 flow. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:08,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:08,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-11 23:56:08,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:08,802 INFO L124 PetriNetUnfolderBase]: 284/775 cut-off events. [2024-10-11 23:56:08,802 INFO L125 PetriNetUnfolderBase]: For 680/701 co-relation queries the response was YES. [2024-10-11 23:56:08,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1954 conditions, 775 events. 284/775 cut-off events. For 680/701 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 4271 event pairs, 90 based on Foata normal form. 27/764 useless extension candidates. Maximal degree in co-relation 1850. Up to 499 conditions per place. [2024-10-11 23:56:08,805 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 76 selfloop transitions, 10 changer transitions 0/101 dead transitions. [2024-10-11 23:56:08,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 101 transitions, 644 flow [2024-10-11 23:56:08,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 23:56:08,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 23:56:08,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 169 transitions. [2024-10-11 23:56:08,807 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.599290780141844 [2024-10-11 23:56:08,807 INFO L175 Difference]: Start difference. First operand has 89 places, 75 transitions, 384 flow. Second operand 6 states and 169 transitions. [2024-10-11 23:56:08,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 101 transitions, 644 flow [2024-10-11 23:56:08,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 101 transitions, 636 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 23:56:08,811 INFO L231 Difference]: Finished difference. Result has 93 places, 74 transitions, 392 flow [2024-10-11 23:56:08,811 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=392, PETRI_PLACES=93, PETRI_TRANSITIONS=74} [2024-10-11 23:56:08,812 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 46 predicate places. [2024-10-11 23:56:08,812 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 74 transitions, 392 flow [2024-10-11 23:56:08,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:08,812 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:08,812 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:56:08,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-11 23:56:08,812 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-11 23:56:08,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:08,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1733645918, now seen corresponding path program 1 times [2024-10-11 23:56:08,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:08,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175852968] [2024-10-11 23:56:08,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:08,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:08,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:08,920 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-11 23:56:08,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:08,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175852968] [2024-10-11 23:56:08,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175852968] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:56:08,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:56:08,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 23:56:08,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978177823] [2024-10-11 23:56:08,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:56:08,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 23:56:08,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:08,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 23:56:08,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 23:56:08,930 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-11 23:56:08,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 74 transitions, 392 flow. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:08,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:08,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-11 23:56:08,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:09,079 INFO L124 PetriNetUnfolderBase]: 280/761 cut-off events. [2024-10-11 23:56:09,079 INFO L125 PetriNetUnfolderBase]: For 637/646 co-relation queries the response was YES. [2024-10-11 23:56:09,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1932 conditions, 761 events. 280/761 cut-off events. For 637/646 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 4162 event pairs, 77 based on Foata normal form. 16/741 useless extension candidates. Maximal degree in co-relation 1827. Up to 495 conditions per place. [2024-10-11 23:56:09,083 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 71 selfloop transitions, 11 changer transitions 0/96 dead transitions. [2024-10-11 23:56:09,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 96 transitions, 630 flow [2024-10-11 23:56:09,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 23:56:09,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 23:56:09,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 166 transitions. [2024-10-11 23:56:09,084 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5886524822695035 [2024-10-11 23:56:09,085 INFO L175 Difference]: Start difference. First operand has 93 places, 74 transitions, 392 flow. Second operand 6 states and 166 transitions. [2024-10-11 23:56:09,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 96 transitions, 630 flow [2024-10-11 23:56:09,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 96 transitions, 595 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-11 23:56:09,089 INFO L231 Difference]: Finished difference. Result has 93 places, 73 transitions, 383 flow [2024-10-11 23:56:09,089 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=383, PETRI_PLACES=93, PETRI_TRANSITIONS=73} [2024-10-11 23:56:09,090 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 46 predicate places. [2024-10-11 23:56:09,090 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 73 transitions, 383 flow [2024-10-11 23:56:09,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:09,090 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:09,090 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:56:09,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-11 23:56:09,090 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-11 23:56:09,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:09,090 INFO L85 PathProgramCache]: Analyzing trace with hash 618193227, now seen corresponding path program 1 times [2024-10-11 23:56:09,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:09,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250149390] [2024-10-11 23:56:09,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:09,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:09,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:09,161 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-11 23:56:09,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:09,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250149390] [2024-10-11 23:56:09,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250149390] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:56:09,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:56:09,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 23:56:09,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794660566] [2024-10-11 23:56:09,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:56:09,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:56:09,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:09,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:56:09,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:56:09,168 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-11 23:56:09,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 73 transitions, 383 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:09,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:09,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-11 23:56:09,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:09,320 INFO L124 PetriNetUnfolderBase]: 415/1098 cut-off events. [2024-10-11 23:56:09,321 INFO L125 PetriNetUnfolderBase]: For 713/735 co-relation queries the response was YES. [2024-10-11 23:56:09,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2657 conditions, 1098 events. 415/1098 cut-off events. For 713/735 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 6240 event pairs, 211 based on Foata normal form. 43/1089 useless extension candidates. Maximal degree in co-relation 2553. Up to 506 conditions per place. [2024-10-11 23:56:09,325 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 100 selfloop transitions, 3 changer transitions 0/117 dead transitions. [2024-10-11 23:56:09,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 117 transitions, 759 flow [2024-10-11 23:56:09,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:56:09,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:56:09,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 136 transitions. [2024-10-11 23:56:09,326 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.723404255319149 [2024-10-11 23:56:09,326 INFO L175 Difference]: Start difference. First operand has 93 places, 73 transitions, 383 flow. Second operand 4 states and 136 transitions. [2024-10-11 23:56:09,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 117 transitions, 759 flow [2024-10-11 23:56:09,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 117 transitions, 726 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-11 23:56:09,330 INFO L231 Difference]: Finished difference. Result has 93 places, 75 transitions, 384 flow [2024-10-11 23:56:09,331 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=384, PETRI_PLACES=93, PETRI_TRANSITIONS=75} [2024-10-11 23:56:09,331 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 46 predicate places. [2024-10-11 23:56:09,331 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 75 transitions, 384 flow [2024-10-11 23:56:09,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:09,331 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:09,331 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:56:09,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-11 23:56:09,332 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-11 23:56:09,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:09,332 INFO L85 PathProgramCache]: Analyzing trace with hash -63529020, now seen corresponding path program 1 times [2024-10-11 23:56:09,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:09,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926421541] [2024-10-11 23:56:09,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:09,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:09,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:09,378 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-11 23:56:09,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:09,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926421541] [2024-10-11 23:56:09,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926421541] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:56:09,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:56:09,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 23:56:09,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171225283] [2024-10-11 23:56:09,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:56:09,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:56:09,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:09,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:56:09,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:56:09,385 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-11 23:56:09,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 75 transitions, 384 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:09,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:09,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-11 23:56:09,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:09,531 INFO L124 PetriNetUnfolderBase]: 405/1082 cut-off events. [2024-10-11 23:56:09,532 INFO L125 PetriNetUnfolderBase]: For 789/804 co-relation queries the response was YES. [2024-10-11 23:56:09,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2773 conditions, 1082 events. 405/1082 cut-off events. For 789/804 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 6153 event pairs, 212 based on Foata normal form. 34/1100 useless extension candidates. Maximal degree in co-relation 2668. Up to 566 conditions per place. [2024-10-11 23:56:09,537 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 92 selfloop transitions, 3 changer transitions 0/109 dead transitions. [2024-10-11 23:56:09,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 109 transitions, 720 flow [2024-10-11 23:56:09,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:56:09,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:56:09,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 125 transitions. [2024-10-11 23:56:09,538 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6648936170212766 [2024-10-11 23:56:09,538 INFO L175 Difference]: Start difference. First operand has 93 places, 75 transitions, 384 flow. Second operand 4 states and 125 transitions. [2024-10-11 23:56:09,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 109 transitions, 720 flow [2024-10-11 23:56:09,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 109 transitions, 714 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 23:56:09,541 INFO L231 Difference]: Finished difference. Result has 97 places, 76 transitions, 400 flow [2024-10-11 23:56:09,541 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=400, PETRI_PLACES=97, PETRI_TRANSITIONS=76} [2024-10-11 23:56:09,542 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 50 predicate places. [2024-10-11 23:56:09,542 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 76 transitions, 400 flow [2024-10-11 23:56:09,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:09,543 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:09,543 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:56:09,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-11 23:56:09,543 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-11 23:56:09,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:09,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1958451573, now seen corresponding path program 1 times [2024-10-11 23:56:09,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:09,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206623010] [2024-10-11 23:56:09,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:09,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:09,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:09,731 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:56:09,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:09,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206623010] [2024-10-11 23:56:09,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206623010] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:56:09,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034551369] [2024-10-11 23:56:09,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:09,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:56:09,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:56:09,734 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:56:09,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 23:56:09,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:09,794 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 23:56:09,795 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:56:09,829 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:56:09,829 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:56:09,970 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:56:09,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034551369] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:56:09,971 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:56:09,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 20 [2024-10-11 23:56:09,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744224670] [2024-10-11 23:56:09,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:56:09,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-11 23:56:09,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:09,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-11 23:56:09,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2024-10-11 23:56:09,983 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-11 23:56:09,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 76 transitions, 400 flow. Second operand has 21 states, 21 states have (on average 18.523809523809526) internal successors, (389), 21 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:09,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:09,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-11 23:56:09,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:10,217 INFO L124 PetriNetUnfolderBase]: 371/1062 cut-off events. [2024-10-11 23:56:10,218 INFO L125 PetriNetUnfolderBase]: For 896/910 co-relation queries the response was YES. [2024-10-11 23:56:10,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2800 conditions, 1062 events. 371/1062 cut-off events. For 896/910 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 6153 event pairs, 255 based on Foata normal form. 3/1049 useless extension candidates. Maximal degree in co-relation 2657. Up to 736 conditions per place. [2024-10-11 23:56:10,222 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 45 selfloop transitions, 21 changer transitions 0/82 dead transitions. [2024-10-11 23:56:10,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 82 transitions, 586 flow [2024-10-11 23:56:10,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-11 23:56:10,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-11 23:56:10,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 407 transitions. [2024-10-11 23:56:10,224 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41236068895643363 [2024-10-11 23:56:10,224 INFO L175 Difference]: Start difference. First operand has 97 places, 76 transitions, 400 flow. Second operand 21 states and 407 transitions. [2024-10-11 23:56:10,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 82 transitions, 586 flow [2024-10-11 23:56:10,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 82 transitions, 582 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 23:56:10,228 INFO L231 Difference]: Finished difference. Result has 118 places, 82 transitions, 507 flow [2024-10-11 23:56:10,228 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=507, PETRI_PLACES=118, PETRI_TRANSITIONS=82} [2024-10-11 23:56:10,229 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 71 predicate places. [2024-10-11 23:56:10,229 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 82 transitions, 507 flow [2024-10-11 23:56:10,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 18.523809523809526) internal successors, (389), 21 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:10,229 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:10,229 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:56:10,242 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-11 23:56:10,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-11 23:56:10,430 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-11 23:56:10,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:10,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1282654220, now seen corresponding path program 2 times [2024-10-11 23:56:10,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:10,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970041486] [2024-10-11 23:56:10,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:10,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:10,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:10,715 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-11 23:56:10,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:10,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970041486] [2024-10-11 23:56:10,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970041486] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:56:10,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:56:10,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 23:56:10,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050348392] [2024-10-11 23:56:10,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:56:10,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 23:56:10,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:10,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 23:56:10,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-11 23:56:10,734 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-11 23:56:10,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 82 transitions, 507 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:10,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:10,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-11 23:56:10,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:11,205 INFO L124 PetriNetUnfolderBase]: 617/1542 cut-off events. [2024-10-11 23:56:11,205 INFO L125 PetriNetUnfolderBase]: For 1585/1589 co-relation queries the response was YES. [2024-10-11 23:56:11,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4241 conditions, 1542 events. 617/1542 cut-off events. For 1585/1589 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 9298 event pairs, 207 based on Foata normal form. 22/1542 useless extension candidates. Maximal degree in co-relation 4070. Up to 874 conditions per place. [2024-10-11 23:56:11,215 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 112 selfloop transitions, 39 changer transitions 0/163 dead transitions. [2024-10-11 23:56:11,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 163 transitions, 1190 flow [2024-10-11 23:56:11,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-11 23:56:11,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-11 23:56:11,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 338 transitions. [2024-10-11 23:56:11,216 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4794326241134752 [2024-10-11 23:56:11,216 INFO L175 Difference]: Start difference. First operand has 118 places, 82 transitions, 507 flow. Second operand 15 states and 338 transitions. [2024-10-11 23:56:11,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 163 transitions, 1190 flow [2024-10-11 23:56:11,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 163 transitions, 1141 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-10-11 23:56:11,224 INFO L231 Difference]: Finished difference. Result has 125 places, 109 transitions, 787 flow [2024-10-11 23:56:11,224 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=787, PETRI_PLACES=125, PETRI_TRANSITIONS=109} [2024-10-11 23:56:11,225 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 78 predicate places. [2024-10-11 23:56:11,225 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 109 transitions, 787 flow [2024-10-11 23:56:11,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:11,226 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:11,226 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:56:11,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-11 23:56:11,226 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-11 23:56:11,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:11,226 INFO L85 PathProgramCache]: Analyzing trace with hash -626349252, now seen corresponding path program 3 times [2024-10-11 23:56:11,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:11,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256963072] [2024-10-11 23:56:11,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:11,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:11,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:11,453 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-11 23:56:11,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:11,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256963072] [2024-10-11 23:56:11,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256963072] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:56:11,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:56:11,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 23:56:11,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263622511] [2024-10-11 23:56:11,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:56:11,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 23:56:11,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:11,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 23:56:11,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-11 23:56:11,470 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-11 23:56:11,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 109 transitions, 787 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:11,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:11,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-11 23:56:11,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:11,883 INFO L124 PetriNetUnfolderBase]: 710/1744 cut-off events. [2024-10-11 23:56:11,884 INFO L125 PetriNetUnfolderBase]: For 3886/3888 co-relation queries the response was YES. [2024-10-11 23:56:11,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5471 conditions, 1744 events. 710/1744 cut-off events. For 3886/3888 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 10845 event pairs, 240 based on Foata normal form. 20/1741 useless extension candidates. Maximal degree in co-relation 5317. Up to 887 conditions per place. [2024-10-11 23:56:11,892 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 110 selfloop transitions, 55 changer transitions 0/177 dead transitions. [2024-10-11 23:56:11,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 177 transitions, 1466 flow [2024-10-11 23:56:11,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-11 23:56:11,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-11 23:56:11,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 349 transitions. [2024-10-11 23:56:11,893 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4640957446808511 [2024-10-11 23:56:11,893 INFO L175 Difference]: Start difference. First operand has 125 places, 109 transitions, 787 flow. Second operand 16 states and 349 transitions. [2024-10-11 23:56:11,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 177 transitions, 1466 flow [2024-10-11 23:56:11,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 177 transitions, 1427 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-10-11 23:56:11,902 INFO L231 Difference]: Finished difference. Result has 140 places, 125 transitions, 1077 flow [2024-10-11 23:56:11,902 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=754, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1077, PETRI_PLACES=140, PETRI_TRANSITIONS=125} [2024-10-11 23:56:11,902 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 93 predicate places. [2024-10-11 23:56:11,903 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 125 transitions, 1077 flow [2024-10-11 23:56:11,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:11,903 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:11,903 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:56:11,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-11 23:56:11,903 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-11 23:56:11,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:11,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1112743414, now seen corresponding path program 1 times [2024-10-11 23:56:11,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:11,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179438727] [2024-10-11 23:56:11,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:11,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:11,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:12,112 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-11 23:56:12,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:12,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179438727] [2024-10-11 23:56:12,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179438727] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:56:12,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:56:12,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 23:56:12,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644093670] [2024-10-11 23:56:12,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:56:12,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 23:56:12,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:12,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 23:56:12,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-11 23:56:12,128 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-11 23:56:12,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 125 transitions, 1077 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:12,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:12,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-11 23:56:12,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:12,558 INFO L124 PetriNetUnfolderBase]: 841/2005 cut-off events. [2024-10-11 23:56:12,558 INFO L125 PetriNetUnfolderBase]: For 7540/7546 co-relation queries the response was YES. [2024-10-11 23:56:12,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7078 conditions, 2005 events. 841/2005 cut-off events. For 7540/7546 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 12868 event pairs, 243 based on Foata normal form. 27/2009 useless extension candidates. Maximal degree in co-relation 6920. Up to 1154 conditions per place. [2024-10-11 23:56:12,572 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 155 selfloop transitions, 47 changer transitions 0/214 dead transitions. [2024-10-11 23:56:12,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 214 transitions, 2055 flow [2024-10-11 23:56:12,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 23:56:12,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-11 23:56:12,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 299 transitions. [2024-10-11 23:56:12,575 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5301418439716312 [2024-10-11 23:56:12,575 INFO L175 Difference]: Start difference. First operand has 140 places, 125 transitions, 1077 flow. Second operand 12 states and 299 transitions. [2024-10-11 23:56:12,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 214 transitions, 2055 flow [2024-10-11 23:56:12,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 214 transitions, 1987 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-10-11 23:56:12,593 INFO L231 Difference]: Finished difference. Result has 149 places, 143 transitions, 1368 flow [2024-10-11 23:56:12,593 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1021, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1368, PETRI_PLACES=149, PETRI_TRANSITIONS=143} [2024-10-11 23:56:12,594 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 102 predicate places. [2024-10-11 23:56:12,594 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 143 transitions, 1368 flow [2024-10-11 23:56:12,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:12,594 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:12,594 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:56:12,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-11 23:56:12,594 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-11 23:56:12,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:12,595 INFO L85 PathProgramCache]: Analyzing trace with hash -585525972, now seen corresponding path program 4 times [2024-10-11 23:56:12,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:12,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852015832] [2024-10-11 23:56:12,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:12,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:12,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:12,822 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-11 23:56:12,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:12,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852015832] [2024-10-11 23:56:12,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852015832] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:56:12,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:56:12,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 23:56:12,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646549954] [2024-10-11 23:56:12,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:56:12,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 23:56:12,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:12,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 23:56:12,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-11 23:56:12,839 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-11 23:56:12,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 143 transitions, 1368 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:12,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:12,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-11 23:56:12,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:13,366 INFO L124 PetriNetUnfolderBase]: 1069/2492 cut-off events. [2024-10-11 23:56:13,367 INFO L125 PetriNetUnfolderBase]: For 13456/13466 co-relation queries the response was YES. [2024-10-11 23:56:13,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9672 conditions, 2492 events. 1069/2492 cut-off events. For 13456/13466 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 16686 event pairs, 132 based on Foata normal form. 48/2516 useless extension candidates. Maximal degree in co-relation 9509. Up to 1029 conditions per place. [2024-10-11 23:56:13,382 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 153 selfloop transitions, 96 changer transitions 0/261 dead transitions. [2024-10-11 23:56:13,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 261 transitions, 2689 flow [2024-10-11 23:56:13,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-11 23:56:13,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-11 23:56:13,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 376 transitions. [2024-10-11 23:56:13,384 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-11 23:56:13,384 INFO L175 Difference]: Start difference. First operand has 149 places, 143 transitions, 1368 flow. Second operand 16 states and 376 transitions. [2024-10-11 23:56:13,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 261 transitions, 2689 flow [2024-10-11 23:56:13,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 261 transitions, 2587 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-10-11 23:56:13,413 INFO L231 Difference]: Finished difference. Result has 163 places, 175 transitions, 2012 flow [2024-10-11 23:56:13,413 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1298, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2012, PETRI_PLACES=163, PETRI_TRANSITIONS=175} [2024-10-11 23:56:13,414 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 116 predicate places. [2024-10-11 23:56:13,414 INFO L471 AbstractCegarLoop]: Abstraction has has 163 places, 175 transitions, 2012 flow [2024-10-11 23:56:13,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:13,414 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:13,414 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:56:13,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-11 23:56:13,414 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-11 23:56:13,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:13,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1215157386, now seen corresponding path program 2 times [2024-10-11 23:56:13,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:13,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291606196] [2024-10-11 23:56:13,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:13,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:13,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:13,618 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-11 23:56:13,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:13,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291606196] [2024-10-11 23:56:13,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291606196] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:56:13,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:56:13,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 23:56:13,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150488193] [2024-10-11 23:56:13,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:56:13,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 23:56:13,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:13,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 23:56:13,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-11 23:56:13,636 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-11 23:56:13,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 175 transitions, 2012 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:13,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:13,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-11 23:56:13,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:14,231 INFO L124 PetriNetUnfolderBase]: 1246/2848 cut-off events. [2024-10-11 23:56:14,231 INFO L125 PetriNetUnfolderBase]: For 20632/20651 co-relation queries the response was YES. [2024-10-11 23:56:14,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12285 conditions, 2848 events. 1246/2848 cut-off events. For 20632/20651 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 19502 event pairs, 354 based on Foata normal form. 28/2837 useless extension candidates. Maximal degree in co-relation 12117. Up to 1719 conditions per place. [2024-10-11 23:56:14,251 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 201 selfloop transitions, 75 changer transitions 0/288 dead transitions. [2024-10-11 23:56:14,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 288 transitions, 3595 flow [2024-10-11 23:56:14,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-11 23:56:14,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-11 23:56:14,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 350 transitions. [2024-10-11 23:56:14,252 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49645390070921985 [2024-10-11 23:56:14,253 INFO L175 Difference]: Start difference. First operand has 163 places, 175 transitions, 2012 flow. Second operand 15 states and 350 transitions. [2024-10-11 23:56:14,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 288 transitions, 3595 flow [2024-10-11 23:56:14,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 288 transitions, 3464 flow, removed 39 selfloop flow, removed 9 redundant places. [2024-10-11 23:56:14,337 INFO L231 Difference]: Finished difference. Result has 172 places, 207 transitions, 2646 flow [2024-10-11 23:56:14,337 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1922, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2646, PETRI_PLACES=172, PETRI_TRANSITIONS=207} [2024-10-11 23:56:14,337 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 125 predicate places. [2024-10-11 23:56:14,337 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 207 transitions, 2646 flow [2024-10-11 23:56:14,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:14,338 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:14,338 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:56:14,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-11 23:56:14,338 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-11 23:56:14,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:14,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1586084474, now seen corresponding path program 3 times [2024-10-11 23:56:14,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:14,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496848510] [2024-10-11 23:56:14,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:14,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:14,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:14,551 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-11 23:56:14,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:14,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496848510] [2024-10-11 23:56:14,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496848510] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:56:14,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:56:14,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 23:56:14,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526562571] [2024-10-11 23:56:14,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:56:14,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 23:56:14,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:14,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 23:56:14,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-11 23:56:14,572 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-11 23:56:14,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 207 transitions, 2646 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:14,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:14,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-11 23:56:14,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:15,279 INFO L124 PetriNetUnfolderBase]: 1368/3119 cut-off events. [2024-10-11 23:56:15,279 INFO L125 PetriNetUnfolderBase]: For 28121/28148 co-relation queries the response was YES. [2024-10-11 23:56:15,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14402 conditions, 3119 events. 1368/3119 cut-off events. For 28121/28148 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 21881 event pairs, 378 based on Foata normal form. 34/3109 useless extension candidates. Maximal degree in co-relation 14229. Up to 1592 conditions per place. [2024-10-11 23:56:15,297 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 183 selfloop transitions, 113 changer transitions 0/308 dead transitions. [2024-10-11 23:56:15,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 308 transitions, 4114 flow [2024-10-11 23:56:15,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-11 23:56:15,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-11 23:56:15,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 361 transitions. [2024-10-11 23:56:15,299 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4800531914893617 [2024-10-11 23:56:15,299 INFO L175 Difference]: Start difference. First operand has 172 places, 207 transitions, 2646 flow. Second operand 16 states and 361 transitions. [2024-10-11 23:56:15,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 308 transitions, 4114 flow [2024-10-11 23:56:15,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 308 transitions, 4029 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-10-11 23:56:15,361 INFO L231 Difference]: Finished difference. Result has 183 places, 226 transitions, 3275 flow [2024-10-11 23:56:15,361 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2561, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3275, PETRI_PLACES=183, PETRI_TRANSITIONS=226} [2024-10-11 23:56:15,362 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 136 predicate places. [2024-10-11 23:56:15,362 INFO L471 AbstractCegarLoop]: Abstraction has has 183 places, 226 transitions, 3275 flow [2024-10-11 23:56:15,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:15,362 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:15,362 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:56:15,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-11 23:56:15,362 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-11 23:56:15,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:15,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1469841914, now seen corresponding path program 4 times [2024-10-11 23:56:15,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:15,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666386267] [2024-10-11 23:56:15,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:15,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:15,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:15,545 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-11 23:56:15,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:15,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666386267] [2024-10-11 23:56:15,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666386267] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:56:15,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:56:15,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 23:56:15,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433682008] [2024-10-11 23:56:15,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:56:15,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 23:56:15,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:15,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 23:56:15,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-11 23:56:15,560 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-11 23:56:15,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 226 transitions, 3275 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:15,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:15,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-11 23:56:15,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:16,408 INFO L124 PetriNetUnfolderBase]: 1514/3444 cut-off events. [2024-10-11 23:56:16,408 INFO L125 PetriNetUnfolderBase]: For 40900/40914 co-relation queries the response was YES. [2024-10-11 23:56:16,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17034 conditions, 3444 events. 1514/3444 cut-off events. For 40900/40914 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 24505 event pairs, 192 based on Foata normal form. 76/3482 useless extension candidates. Maximal degree in co-relation 16856. Up to 1299 conditions per place. [2024-10-11 23:56:16,436 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 189 selfloop transitions, 160 changer transitions 0/361 dead transitions. [2024-10-11 23:56:16,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 361 transitions, 5184 flow [2024-10-11 23:56:16,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-11 23:56:16,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-11 23:56:16,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 389 transitions. [2024-10-11 23:56:16,438 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5172872340425532 [2024-10-11 23:56:16,438 INFO L175 Difference]: Start difference. First operand has 183 places, 226 transitions, 3275 flow. Second operand 16 states and 389 transitions. [2024-10-11 23:56:16,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 361 transitions, 5184 flow [2024-10-11 23:56:16,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 361 transitions, 5030 flow, removed 39 selfloop flow, removed 12 redundant places. [2024-10-11 23:56:16,553 INFO L231 Difference]: Finished difference. Result has 192 places, 255 transitions, 4234 flow [2024-10-11 23:56:16,553 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3143, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4234, PETRI_PLACES=192, PETRI_TRANSITIONS=255} [2024-10-11 23:56:16,554 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 145 predicate places. [2024-10-11 23:56:16,554 INFO L471 AbstractCegarLoop]: Abstraction has has 192 places, 255 transitions, 4234 flow [2024-10-11 23:56:16,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:16,554 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:16,554 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:56:16,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-11 23:56:16,554 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-11 23:56:16,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:16,555 INFO L85 PathProgramCache]: Analyzing trace with hash 830904273, now seen corresponding path program 1 times [2024-10-11 23:56:16,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:16,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289885903] [2024-10-11 23:56:16,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:16,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:16,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:16,776 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-11 23:56:16,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:16,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289885903] [2024-10-11 23:56:16,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289885903] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:56:16,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:56:16,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 23:56:16,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494035502] [2024-10-11 23:56:16,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:56:16,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 23:56:16,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:16,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 23:56:16,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-11 23:56:16,797 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-11 23:56:16,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 255 transitions, 4234 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:16,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:16,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-11 23:56:16,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:17,543 INFO L124 PetriNetUnfolderBase]: 1493/3367 cut-off events. [2024-10-11 23:56:17,543 INFO L125 PetriNetUnfolderBase]: For 49278/49300 co-relation queries the response was YES. [2024-10-11 23:56:17,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18233 conditions, 3367 events. 1493/3367 cut-off events. For 49278/49300 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 23846 event pairs, 523 based on Foata normal form. 25/3346 useless extension candidates. Maximal degree in co-relation 18048. Up to 2575 conditions per place. [2024-10-11 23:56:17,645 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 251 selfloop transitions, 56 changer transitions 0/319 dead transitions. [2024-10-11 23:56:17,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 319 transitions, 5529 flow [2024-10-11 23:56:17,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-11 23:56:17,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-11 23:56:17,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 331 transitions. [2024-10-11 23:56:17,646 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4695035460992908 [2024-10-11 23:56:17,646 INFO L175 Difference]: Start difference. First operand has 192 places, 255 transitions, 4234 flow. Second operand 15 states and 331 transitions. [2024-10-11 23:56:17,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 319 transitions, 5529 flow [2024-10-11 23:56:17,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 319 transitions, 5330 flow, removed 49 selfloop flow, removed 11 redundant places. [2024-10-11 23:56:17,778 INFO L231 Difference]: Finished difference. Result has 196 places, 255 transitions, 4184 flow [2024-10-11 23:56:17,778 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4044, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4184, PETRI_PLACES=196, PETRI_TRANSITIONS=255} [2024-10-11 23:56:17,780 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 149 predicate places. [2024-10-11 23:56:17,780 INFO L471 AbstractCegarLoop]: Abstraction has has 196 places, 255 transitions, 4184 flow [2024-10-11 23:56:17,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:17,780 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:17,781 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:56:17,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-11 23:56:17,781 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-11 23:56:17,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:17,781 INFO L85 PathProgramCache]: Analyzing trace with hash 135307773, now seen corresponding path program 1 times [2024-10-11 23:56:17,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:17,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365246157] [2024-10-11 23:56:17,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:17,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:17,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:17,968 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-11 23:56:17,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:17,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365246157] [2024-10-11 23:56:17,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365246157] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:56:17,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:56:17,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 23:56:17,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446386954] [2024-10-11 23:56:17,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:56:17,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 23:56:17,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:17,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 23:56:17,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-11 23:56:17,989 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-11 23:56:17,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 255 transitions, 4184 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:17,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:17,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-11 23:56:17,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:18,681 INFO L124 PetriNetUnfolderBase]: 1464/3358 cut-off events. [2024-10-11 23:56:18,682 INFO L125 PetriNetUnfolderBase]: For 47160/47182 co-relation queries the response was YES. [2024-10-11 23:56:18,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17782 conditions, 3358 events. 1464/3358 cut-off events. For 47160/47182 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 23979 event pairs, 506 based on Foata normal form. 34/3341 useless extension candidates. Maximal degree in co-relation 17597. Up to 2488 conditions per place. [2024-10-11 23:56:18,706 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 252 selfloop transitions, 60 changer transitions 0/324 dead transitions. [2024-10-11 23:56:18,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 324 transitions, 5380 flow [2024-10-11 23:56:18,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 23:56:18,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-11 23:56:18,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 290 transitions. [2024-10-11 23:56:18,708 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5141843971631206 [2024-10-11 23:56:18,708 INFO L175 Difference]: Start difference. First operand has 196 places, 255 transitions, 4184 flow. Second operand 12 states and 290 transitions. [2024-10-11 23:56:18,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 324 transitions, 5380 flow [2024-10-11 23:56:18,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 324 transitions, 5285 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-10-11 23:56:18,842 INFO L231 Difference]: Finished difference. Result has 195 places, 254 transitions, 4200 flow [2024-10-11 23:56:18,842 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4080, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4200, PETRI_PLACES=195, PETRI_TRANSITIONS=254} [2024-10-11 23:56:18,843 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 148 predicate places. [2024-10-11 23:56:18,843 INFO L471 AbstractCegarLoop]: Abstraction has has 195 places, 254 transitions, 4200 flow [2024-10-11 23:56:18,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:18,843 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:18,843 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:56:18,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-11 23:56:18,843 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-11 23:56:18,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:18,844 INFO L85 PathProgramCache]: Analyzing trace with hash 2058009937, now seen corresponding path program 2 times [2024-10-11 23:56:18,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:18,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839578813] [2024-10-11 23:56:18,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:18,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:18,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:19,009 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-11 23:56:19,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:19,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839578813] [2024-10-11 23:56:19,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839578813] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:56:19,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:56:19,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 23:56:19,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018265479] [2024-10-11 23:56:19,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:56:19,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 23:56:19,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:19,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 23:56:19,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-11 23:56:19,026 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-11 23:56:19,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 254 transitions, 4200 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:19,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:19,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-11 23:56:19,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:19,861 INFO L124 PetriNetUnfolderBase]: 1443/3295 cut-off events. [2024-10-11 23:56:19,861 INFO L125 PetriNetUnfolderBase]: For 46719/46738 co-relation queries the response was YES. [2024-10-11 23:56:19,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17534 conditions, 3295 events. 1443/3295 cut-off events. For 46719/46738 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 23463 event pairs, 508 based on Foata normal form. 25/3276 useless extension candidates. Maximal degree in co-relation 17350. Up to 2447 conditions per place. [2024-10-11 23:56:19,891 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 228 selfloop transitions, 71 changer transitions 0/311 dead transitions. [2024-10-11 23:56:19,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 311 transitions, 5369 flow [2024-10-11 23:56:19,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-11 23:56:19,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-11 23:56:19,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 342 transitions. [2024-10-11 23:56:19,893 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45478723404255317 [2024-10-11 23:56:19,893 INFO L175 Difference]: Start difference. First operand has 195 places, 254 transitions, 4200 flow. Second operand 16 states and 342 transitions. [2024-10-11 23:56:19,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 311 transitions, 5369 flow [2024-10-11 23:56:20,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 311 transitions, 5265 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-10-11 23:56:20,035 INFO L231 Difference]: Finished difference. Result has 200 places, 253 transitions, 4232 flow [2024-10-11 23:56:20,036 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4090, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4232, PETRI_PLACES=200, PETRI_TRANSITIONS=253} [2024-10-11 23:56:20,036 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 153 predicate places. [2024-10-11 23:56:20,036 INFO L471 AbstractCegarLoop]: Abstraction has has 200 places, 253 transitions, 4232 flow [2024-10-11 23:56:20,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:20,037 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:20,037 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:56:20,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-11 23:56:20,037 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-11 23:56:20,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:20,038 INFO L85 PathProgramCache]: Analyzing trace with hash -971435679, now seen corresponding path program 3 times [2024-10-11 23:56:20,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:20,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741128744] [2024-10-11 23:56:20,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:20,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:20,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:20,255 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-11 23:56:20,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:20,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741128744] [2024-10-11 23:56:20,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741128744] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:56:20,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:56:20,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 23:56:20,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791027047] [2024-10-11 23:56:20,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:56:20,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 23:56:20,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:20,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 23:56:20,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-11 23:56:20,270 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-11 23:56:20,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 253 transitions, 4232 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:20,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:20,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-11 23:56:20,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:20,909 INFO L124 PetriNetUnfolderBase]: 1422/3259 cut-off events. [2024-10-11 23:56:20,910 INFO L125 PetriNetUnfolderBase]: For 46177/46193 co-relation queries the response was YES. [2024-10-11 23:56:20,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17356 conditions, 3259 events. 1422/3259 cut-off events. For 46177/46193 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 23181 event pairs, 454 based on Foata normal form. 25/3241 useless extension candidates. Maximal degree in co-relation 17173. Up to 2326 conditions per place. [2024-10-11 23:56:20,932 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 234 selfloop transitions, 84 changer transitions 0/330 dead transitions. [2024-10-11 23:56:20,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 330 transitions, 5688 flow [2024-10-11 23:56:20,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-11 23:56:20,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-11 23:56:20,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 333 transitions. [2024-10-11 23:56:20,934 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4723404255319149 [2024-10-11 23:56:20,934 INFO L175 Difference]: Start difference. First operand has 200 places, 253 transitions, 4232 flow. Second operand 15 states and 333 transitions. [2024-10-11 23:56:20,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 330 transitions, 5688 flow [2024-10-11 23:56:21,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 330 transitions, 5572 flow, removed 0 selfloop flow, removed 13 redundant places. [2024-10-11 23:56:21,043 INFO L231 Difference]: Finished difference. Result has 205 places, 265 transitions, 4570 flow [2024-10-11 23:56:21,044 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4116, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4570, PETRI_PLACES=205, PETRI_TRANSITIONS=265} [2024-10-11 23:56:21,044 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 158 predicate places. [2024-10-11 23:56:21,044 INFO L471 AbstractCegarLoop]: Abstraction has has 205 places, 265 transitions, 4570 flow [2024-10-11 23:56:21,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:21,044 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:21,044 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:56:21,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-11 23:56:21,045 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-11 23:56:21,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:21,045 INFO L85 PathProgramCache]: Analyzing trace with hash 984827005, now seen corresponding path program 2 times [2024-10-11 23:56:21,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:21,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501099865] [2024-10-11 23:56:21,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:21,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:21,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:21,218 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-11 23:56:21,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:21,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501099865] [2024-10-11 23:56:21,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501099865] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:56:21,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:56:21,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 23:56:21,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483195481] [2024-10-11 23:56:21,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:56:21,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 23:56:21,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:21,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 23:56:21,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-11 23:56:21,234 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-11 23:56:21,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 265 transitions, 4570 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:21,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:21,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-11 23:56:21,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:21,952 INFO L124 PetriNetUnfolderBase]: 1393/3246 cut-off events. [2024-10-11 23:56:21,953 INFO L125 PetriNetUnfolderBase]: For 48351/48370 co-relation queries the response was YES. [2024-10-11 23:56:21,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17598 conditions, 3246 events. 1393/3246 cut-off events. For 48351/48370 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 23229 event pairs, 476 based on Foata normal form. 30/3226 useless extension candidates. Maximal degree in co-relation 17411. Up to 2390 conditions per place. [2024-10-11 23:56:21,975 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 261 selfloop transitions, 61 changer transitions 0/334 dead transitions. [2024-10-11 23:56:21,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 334 transitions, 5796 flow [2024-10-11 23:56:21,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-11 23:56:21,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-11 23:56:21,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 342 transitions. [2024-10-11 23:56:21,977 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4851063829787234 [2024-10-11 23:56:21,977 INFO L175 Difference]: Start difference. First operand has 205 places, 265 transitions, 4570 flow. Second operand 15 states and 342 transitions. [2024-10-11 23:56:21,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 334 transitions, 5796 flow [2024-10-11 23:56:22,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 334 transitions, 5662 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-10-11 23:56:22,105 INFO L231 Difference]: Finished difference. Result has 208 places, 264 transitions, 4552 flow [2024-10-11 23:56:22,106 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4430, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4552, PETRI_PLACES=208, PETRI_TRANSITIONS=264} [2024-10-11 23:56:22,106 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 161 predicate places. [2024-10-11 23:56:22,106 INFO L471 AbstractCegarLoop]: Abstraction has has 208 places, 264 transitions, 4552 flow [2024-10-11 23:56:22,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:22,110 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:22,110 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:56:22,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-11 23:56:22,110 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-11 23:56:22,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:22,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1923978745, now seen corresponding path program 3 times [2024-10-11 23:56:22,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:22,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673320005] [2024-10-11 23:56:22,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:22,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:22,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:22,260 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-11 23:56:22,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:22,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673320005] [2024-10-11 23:56:22,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673320005] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:56:22,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:56:22,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 23:56:22,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455804566] [2024-10-11 23:56:22,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:56:22,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 23:56:22,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:22,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 23:56:22,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-11 23:56:22,279 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-11 23:56:22,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 264 transitions, 4552 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:22,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:22,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-11 23:56:22,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:22,931 INFO L124 PetriNetUnfolderBase]: 1364/3224 cut-off events. [2024-10-11 23:56:22,931 INFO L125 PetriNetUnfolderBase]: For 48270/48298 co-relation queries the response was YES. [2024-10-11 23:56:22,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17313 conditions, 3224 events. 1364/3224 cut-off events. For 48270/48298 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 23225 event pairs, 432 based on Foata normal form. 38/3215 useless extension candidates. Maximal degree in co-relation 17127. Up to 2204 conditions per place. [2024-10-11 23:56:22,955 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 223 selfloop transitions, 92 changer transitions 0/327 dead transitions. [2024-10-11 23:56:22,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 327 transitions, 5677 flow [2024-10-11 23:56:22,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-11 23:56:22,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-11 23:56:22,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 353 transitions. [2024-10-11 23:56:22,957 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46941489361702127 [2024-10-11 23:56:22,957 INFO L175 Difference]: Start difference. First operand has 208 places, 264 transitions, 4552 flow. Second operand 16 states and 353 transitions. [2024-10-11 23:56:22,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 327 transitions, 5677 flow [2024-10-11 23:56:23,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 327 transitions, 5581 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-10-11 23:56:23,073 INFO L231 Difference]: Finished difference. Result has 211 places, 263 transitions, 4627 flow [2024-10-11 23:56:23,073 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4443, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4627, PETRI_PLACES=211, PETRI_TRANSITIONS=263} [2024-10-11 23:56:23,074 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 164 predicate places. [2024-10-11 23:56:23,074 INFO L471 AbstractCegarLoop]: Abstraction has has 211 places, 263 transitions, 4627 flow [2024-10-11 23:56:23,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:23,074 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:23,074 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:56:23,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-10-11 23:56:23,074 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-11 23:56:23,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:23,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1679540615, now seen corresponding path program 4 times [2024-10-11 23:56:23,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:23,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796699826] [2024-10-11 23:56:23,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:23,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:23,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:23,225 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-11 23:56:23,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:23,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796699826] [2024-10-11 23:56:23,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796699826] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:56:23,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:56:23,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 23:56:23,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001014997] [2024-10-11 23:56:23,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:56:23,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 23:56:23,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:23,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 23:56:23,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-11 23:56:23,241 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-11 23:56:23,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 263 transitions, 4627 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:23,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:23,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-11 23:56:23,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:23,875 INFO L124 PetriNetUnfolderBase]: 1335/3147 cut-off events. [2024-10-11 23:56:23,875 INFO L125 PetriNetUnfolderBase]: For 48249/48278 co-relation queries the response was YES. [2024-10-11 23:56:23,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17152 conditions, 3147 events. 1335/3147 cut-off events. For 48249/48278 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 22555 event pairs, 349 based on Foata normal form. 40/3150 useless extension candidates. Maximal degree in co-relation 16966. Up to 2049 conditions per place. [2024-10-11 23:56:23,895 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 218 selfloop transitions, 107 changer transitions 0/337 dead transitions. [2024-10-11 23:56:23,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 337 transitions, 5863 flow [2024-10-11 23:56:23,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-11 23:56:23,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-11 23:56:23,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 347 transitions. [2024-10-11 23:56:23,898 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4921985815602837 [2024-10-11 23:56:23,898 INFO L175 Difference]: Start difference. First operand has 211 places, 263 transitions, 4627 flow. Second operand 15 states and 347 transitions. [2024-10-11 23:56:23,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 337 transitions, 5863 flow [2024-10-11 23:56:24,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 337 transitions, 5697 flow, removed 0 selfloop flow, removed 13 redundant places. [2024-10-11 23:56:24,063 INFO L231 Difference]: Finished difference. Result has 216 places, 266 transitions, 4832 flow [2024-10-11 23:56:24,063 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4423, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4832, PETRI_PLACES=216, PETRI_TRANSITIONS=266} [2024-10-11 23:56:24,064 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 169 predicate places. [2024-10-11 23:56:24,064 INFO L471 AbstractCegarLoop]: Abstraction has has 216 places, 266 transitions, 4832 flow [2024-10-11 23:56:24,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:24,064 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:24,064 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:56:24,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-10-11 23:56:24,064 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-11 23:56:24,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:24,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1839380383, now seen corresponding path program 1 times [2024-10-11 23:56:24,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:24,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014500338] [2024-10-11 23:56:24,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:24,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:24,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:24,103 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-11 23:56:24,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:24,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014500338] [2024-10-11 23:56:24,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014500338] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:56:24,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170083278] [2024-10-11 23:56:24,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:24,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:56:24,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:56:24,106 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:56:24,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 23:56:24,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:24,184 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 23:56:24,185 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:56:24,210 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-11 23:56:24,210 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:56:24,236 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-11 23:56:24,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1170083278] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:56:24,237 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:56:24,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-11 23:56:24,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671188528] [2024-10-11 23:56:24,238 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:56:24,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 23:56:24,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:24,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 23:56:24,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-11 23:56:24,246 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-11 23:56:24,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 266 transitions, 4832 flow. Second operand has 10 states, 10 states have (on average 20.3) internal successors, (203), 10 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:24,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:24,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-11 23:56:24,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:24,813 INFO L124 PetriNetUnfolderBase]: 1365/3322 cut-off events. [2024-10-11 23:56:24,814 INFO L125 PetriNetUnfolderBase]: For 52816/53316 co-relation queries the response was YES. [2024-10-11 23:56:24,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18221 conditions, 3322 events. 1365/3322 cut-off events. For 52816/53316 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 22383 event pairs, 312 based on Foata normal form. 228/3520 useless extension candidates. Maximal degree in co-relation 18032. Up to 681 conditions per place. [2024-10-11 23:56:24,837 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 419 selfloop transitions, 14 changer transitions 0/449 dead transitions. [2024-10-11 23:56:24,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 449 transitions, 8090 flow [2024-10-11 23:56:24,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 23:56:24,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 23:56:24,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 265 transitions. [2024-10-11 23:56:24,838 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6264775413711584 [2024-10-11 23:56:24,838 INFO L175 Difference]: Start difference. First operand has 216 places, 266 transitions, 4832 flow. Second operand 9 states and 265 transitions. [2024-10-11 23:56:24,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 449 transitions, 8090 flow [2024-10-11 23:56:24,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 449 transitions, 7920 flow, removed 9 selfloop flow, removed 13 redundant places. [2024-10-11 23:56:24,932 INFO L231 Difference]: Finished difference. Result has 215 places, 258 transitions, 4494 flow [2024-10-11 23:56:24,932 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4422, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4494, PETRI_PLACES=215, PETRI_TRANSITIONS=258} [2024-10-11 23:56:24,932 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 168 predicate places. [2024-10-11 23:56:24,933 INFO L471 AbstractCegarLoop]: Abstraction has has 215 places, 258 transitions, 4494 flow [2024-10-11 23:56:24,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 20.3) internal successors, (203), 10 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:24,933 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:24,933 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:56:24,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-11 23:56:25,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-10-11 23:56:25,138 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-11 23:56:25,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:25,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1530145736, now seen corresponding path program 1 times [2024-10-11 23:56:25,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:25,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901117769] [2024-10-11 23:56:25,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:25,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:25,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:25,318 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-11 23:56:25,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:25,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901117769] [2024-10-11 23:56:25,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901117769] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:56:25,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029109217] [2024-10-11 23:56:25,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:25,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:56:25,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:56:25,320 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:56:25,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-11 23:56:25,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:25,403 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-11 23:56:25,405 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:56:25,410 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2024-10-11 23:56:25,526 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2024-10-11 23:56:27,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 15 [2024-10-11 23:56:27,182 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-11 23:56:27,182 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:56:31,135 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-11 23:56:31,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029109217] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:56:31,136 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:56:31,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 22 [2024-10-11 23:56:31,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314623540] [2024-10-11 23:56:31,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:56:31,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-11 23:56:31,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:31,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-11 23:56:31,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=416, Unknown=6, NotChecked=0, Total=552 [2024-10-11 23:56:32,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-11 23:56:35,986 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-11 23:56:35,987 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-10-11 23:56:35,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 258 transitions, 4494 flow. Second operand has 24 states, 24 states have (on average 15.5) internal successors, (372), 24 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:35,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:35,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-10-11 23:56:35,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:45,008 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 23:56:47,677 INFO L124 PetriNetUnfolderBase]: 1959/4540 cut-off events. [2024-10-11 23:56:47,677 INFO L125 PetriNetUnfolderBase]: For 66106/66289 co-relation queries the response was YES. [2024-10-11 23:56:47,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24667 conditions, 4540 events. 1959/4540 cut-off events. For 66106/66289 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 30696 event pairs, 644 based on Foata normal form. 208/4647 useless extension candidates. Maximal degree in co-relation 24477. Up to 2548 conditions per place. [2024-10-11 23:56:47,714 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 314 selfloop transitions, 167 changer transitions 0/493 dead transitions. [2024-10-11 23:56:47,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 493 transitions, 7981 flow [2024-10-11 23:56:47,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-11 23:56:47,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-10-11 23:56:47,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 551 transitions. [2024-10-11 23:56:47,716 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46893617021276596 [2024-10-11 23:56:47,716 INFO L175 Difference]: Start difference. First operand has 215 places, 258 transitions, 4494 flow. Second operand 25 states and 551 transitions. [2024-10-11 23:56:47,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 493 transitions, 7981 flow [2024-10-11 23:56:47,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 493 transitions, 7746 flow, removed 41 selfloop flow, removed 4 redundant places. [2024-10-11 23:56:47,858 INFO L231 Difference]: Finished difference. Result has 243 places, 326 transitions, 6069 flow [2024-10-11 23:56:47,859 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4129, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=6069, PETRI_PLACES=243, PETRI_TRANSITIONS=326} [2024-10-11 23:56:47,859 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 196 predicate places. [2024-10-11 23:56:47,859 INFO L471 AbstractCegarLoop]: Abstraction has has 243 places, 326 transitions, 6069 flow [2024-10-11 23:56:47,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 15.5) internal successors, (372), 24 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:47,860 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:47,860 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:56:47,872 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-11 23:56:48,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-10-11 23:56:48,060 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-11 23:56:48,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:48,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1185225914, now seen corresponding path program 1 times [2024-10-11 23:56:48,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:48,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059302224] [2024-10-11 23:56:48,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:48,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:48,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:48,249 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-11 23:56:48,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:48,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059302224] [2024-10-11 23:56:48,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059302224] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:56:48,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679331772] [2024-10-11 23:56:48,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:48,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:56:48,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:56:48,252 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:56:48,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-11 23:56:48,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:48,338 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-11 23:56:48,341 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:56:48,345 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2024-10-11 23:56:48,478 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2024-10-11 23:56:50,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 15 [2024-10-11 23:56:50,318 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-11 23:56:50,318 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:56:56,160 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-11 23:56:56,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679331772] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:56:56,161 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:56:56,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 22 [2024-10-11 23:56:56,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574172048] [2024-10-11 23:56:56,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:56:56,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-11 23:56:56,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:56,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-11 23:56:56,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=415, Unknown=7, NotChecked=0, Total=552 [2024-10-11 23:56:59,600 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-10-11 23:56:59,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 326 transitions, 6069 flow. Second operand has 24 states, 24 states have (on average 15.5) internal successors, (372), 24 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:59,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:59,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-10-11 23:56:59,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:57:11,731 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-10-11 23:57:14,891 INFO L124 PetriNetUnfolderBase]: 2052/4532 cut-off events. [2024-10-11 23:57:14,891 INFO L125 PetriNetUnfolderBase]: For 72955/73372 co-relation queries the response was YES. [2024-10-11 23:57:14,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26611 conditions, 4532 events. 2052/4532 cut-off events. For 72955/73372 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 30405 event pairs, 662 based on Foata normal form. 283/4777 useless extension candidates. Maximal degree in co-relation 26413. Up to 2793 conditions per place. [2024-10-11 23:57:14,928 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 369 selfloop transitions, 208 changer transitions 0/590 dead transitions. [2024-10-11 23:57:14,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 590 transitions, 10973 flow [2024-10-11 23:57:14,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-11 23:57:14,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-10-11 23:57:14,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 537 transitions. [2024-10-11 23:57:14,930 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4570212765957447 [2024-10-11 23:57:14,930 INFO L175 Difference]: Start difference. First operand has 243 places, 326 transitions, 6069 flow. Second operand 25 states and 537 transitions. [2024-10-11 23:57:14,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 590 transitions, 10973 flow [2024-10-11 23:57:15,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 590 transitions, 9883 flow, removed 350 selfloop flow, removed 12 redundant places. [2024-10-11 23:57:15,076 INFO L231 Difference]: Finished difference. Result has 265 places, 425 transitions, 8109 flow [2024-10-11 23:57:15,076 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5108, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=8109, PETRI_PLACES=265, PETRI_TRANSITIONS=425} [2024-10-11 23:57:15,076 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 218 predicate places. [2024-10-11 23:57:15,077 INFO L471 AbstractCegarLoop]: Abstraction has has 265 places, 425 transitions, 8109 flow [2024-10-11 23:57:15,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 15.5) internal successors, (372), 24 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:57:15,077 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:57:15,077 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:57:15,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-11 23:57:15,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:57:15,277 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-11 23:57:15,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:57:15,278 INFO L85 PathProgramCache]: Analyzing trace with hash -2083402850, now seen corresponding path program 1 times [2024-10-11 23:57:15,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:57:15,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278269195] [2024-10-11 23:57:15,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:57:15,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:57:15,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:57:15,339 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-11 23:57:15,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:57:15,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278269195] [2024-10-11 23:57:15,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278269195] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:57:15,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601158902] [2024-10-11 23:57:15,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:57:15,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:57:15,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:57:15,342 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:57:15,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-11 23:57:15,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:57:15,436 INFO L255 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 23:57:15,437 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:57:15,475 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-11 23:57:15,475 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 23:57:15,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601158902] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:57:15,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 23:57:15,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-10-11 23:57:15,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229194558] [2024-10-11 23:57:15,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:57:15,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 23:57:15,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:57:15,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 23:57:15,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-11 23:57:15,483 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-11 23:57:15,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 425 transitions, 8109 flow. Second operand has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:57:15,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:57:15,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-11 23:57:15,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:57:16,253 INFO L124 PetriNetUnfolderBase]: 1493/3573 cut-off events. [2024-10-11 23:57:16,253 INFO L125 PetriNetUnfolderBase]: For 57167/57386 co-relation queries the response was YES. [2024-10-11 23:57:16,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21523 conditions, 3573 events. 1493/3573 cut-off events. For 57167/57386 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 24333 event pairs, 339 based on Foata normal form. 181/3735 useless extension candidates. Maximal degree in co-relation 21320. Up to 1232 conditions per place. [2024-10-11 23:57:16,279 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 507 selfloop transitions, 17 changer transitions 0/545 dead transitions. [2024-10-11 23:57:16,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 545 transitions, 10446 flow [2024-10-11 23:57:16,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 23:57:16,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 23:57:16,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 195 transitions. [2024-10-11 23:57:16,279 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6914893617021277 [2024-10-11 23:57:16,280 INFO L175 Difference]: Start difference. First operand has 265 places, 425 transitions, 8109 flow. Second operand 6 states and 195 transitions. [2024-10-11 23:57:16,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 545 transitions, 10446 flow [2024-10-11 23:57:16,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 545 transitions, 9506 flow, removed 367 selfloop flow, removed 8 redundant places. [2024-10-11 23:57:16,411 INFO L231 Difference]: Finished difference. Result has 261 places, 424 transitions, 7311 flow [2024-10-11 23:57:16,411 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7277, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7311, PETRI_PLACES=261, PETRI_TRANSITIONS=424} [2024-10-11 23:57:16,412 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 214 predicate places. [2024-10-11 23:57:16,412 INFO L471 AbstractCegarLoop]: Abstraction has has 261 places, 424 transitions, 7311 flow [2024-10-11 23:57:16,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:57:16,412 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:57:16,412 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:57:16,424 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-11 23:57:16,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:57:16,613 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-11 23:57:16,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:57:16,613 INFO L85 PathProgramCache]: Analyzing trace with hash 139343276, now seen corresponding path program 1 times [2024-10-11 23:57:16,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:57:16,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87935065] [2024-10-11 23:57:16,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:57:16,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:57:16,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:57:16,671 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-11 23:57:16,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:57:16,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87935065] [2024-10-11 23:57:16,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87935065] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:57:16,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61040088] [2024-10-11 23:57:16,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:57:16,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:57:16,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:57:16,673 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:57:16,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-11 23:57:16,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:57:16,762 INFO L255 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 23:57:16,763 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:57:16,794 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-11 23:57:16,794 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 23:57:16,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61040088] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:57:16,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 23:57:16,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-10-11 23:57:16,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305089527] [2024-10-11 23:57:16,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:57:16,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 23:57:16,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:57:16,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 23:57:16,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-11 23:57:16,802 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-11 23:57:16,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 424 transitions, 7311 flow. Second operand has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:57:16,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:57:16,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-11 23:57:16,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:57:17,492 INFO L124 PetriNetUnfolderBase]: 1474/3513 cut-off events. [2024-10-11 23:57:17,493 INFO L125 PetriNetUnfolderBase]: For 49562/49930 co-relation queries the response was YES. [2024-10-11 23:57:17,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20368 conditions, 3513 events. 1474/3513 cut-off events. For 49562/49930 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 23463 event pairs, 294 based on Foata normal form. 253/3737 useless extension candidates. Maximal degree in co-relation 20167. Up to 1573 conditions per place. [2024-10-11 23:57:17,520 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 501 selfloop transitions, 19 changer transitions 0/539 dead transitions. [2024-10-11 23:57:17,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 539 transitions, 9874 flow [2024-10-11 23:57:17,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 23:57:17,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 23:57:17,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 175 transitions. [2024-10-11 23:57:17,521 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6205673758865248 [2024-10-11 23:57:17,521 INFO L175 Difference]: Start difference. First operand has 261 places, 424 transitions, 7311 flow. Second operand 6 states and 175 transitions. [2024-10-11 23:57:17,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 539 transitions, 9874 flow [2024-10-11 23:57:17,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 539 transitions, 9789 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 23:57:17,655 INFO L231 Difference]: Finished difference. Result has 260 places, 422 transitions, 7317 flow [2024-10-11 23:57:17,656 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7279, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7317, PETRI_PLACES=260, PETRI_TRANSITIONS=422} [2024-10-11 23:57:17,656 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 213 predicate places. [2024-10-11 23:57:17,656 INFO L471 AbstractCegarLoop]: Abstraction has has 260 places, 422 transitions, 7317 flow [2024-10-11 23:57:17,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:57:17,656 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:57:17,656 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-11 23:57:17,669 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-11 23:57:17,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-10-11 23:57:17,857 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-11 23:57:17,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:57:17,857 INFO L85 PathProgramCache]: Analyzing trace with hash -160978597, now seen corresponding path program 1 times [2024-10-11 23:57:17,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:57:17,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823568852] [2024-10-11 23:57:17,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:57:17,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:57:17,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:57:17,899 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2024-10-11 23:57:17,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:57:17,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823568852] [2024-10-11 23:57:17,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823568852] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:57:17,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:57:17,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 23:57:17,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014471012] [2024-10-11 23:57:17,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:57:17,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:57:17,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:57:17,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:57:17,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:57:17,906 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-11 23:57:17,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 422 transitions, 7317 flow. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:57:17,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:57:17,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-11 23:57:17,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:57:18,559 INFO L124 PetriNetUnfolderBase]: 1439/3485 cut-off events. [2024-10-11 23:57:18,559 INFO L125 PetriNetUnfolderBase]: For 48841/49066 co-relation queries the response was YES. [2024-10-11 23:57:18,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20379 conditions, 3485 events. 1439/3485 cut-off events. For 48841/49066 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 23664 event pairs, 419 based on Foata normal form. 161/3625 useless extension candidates. Maximal degree in co-relation 20178. Up to 2096 conditions per place. [2024-10-11 23:57:18,586 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 465 selfloop transitions, 21 changer transitions 0/505 dead transitions. [2024-10-11 23:57:18,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 505 transitions, 9229 flow [2024-10-11 23:57:18,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:57:18,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:57:18,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 126 transitions. [2024-10-11 23:57:18,587 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6702127659574468 [2024-10-11 23:57:18,587 INFO L175 Difference]: Start difference. First operand has 260 places, 422 transitions, 7317 flow. Second operand 4 states and 126 transitions. [2024-10-11 23:57:18,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 505 transitions, 9229 flow [2024-10-11 23:57:18,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 505 transitions, 9136 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-10-11 23:57:18,730 INFO L231 Difference]: Finished difference. Result has 258 places, 422 transitions, 7331 flow [2024-10-11 23:57:18,730 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7271, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=7331, PETRI_PLACES=258, PETRI_TRANSITIONS=422} [2024-10-11 23:57:18,730 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 211 predicate places. [2024-10-11 23:57:18,730 INFO L471 AbstractCegarLoop]: Abstraction has has 258 places, 422 transitions, 7331 flow [2024-10-11 23:57:18,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:57:18,730 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:57:18,730 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:57:18,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-10-11 23:57:18,731 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-11 23:57:18,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:57:18,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1604864296, now seen corresponding path program 1 times [2024-10-11 23:57:18,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:57:18,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148727805] [2024-10-11 23:57:18,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:57:18,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:57:18,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:57:19,180 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-11 23:57:19,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:57:19,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148727805] [2024-10-11 23:57:19,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148727805] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:57:19,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970183240] [2024-10-11 23:57:19,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:57:19,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:57:19,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:57:19,182 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:57:19,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-11 23:57:19,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:57:19,277 INFO L255 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-11 23:57:19,278 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:57:19,349 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-10-11 23:57:19,400 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2024-10-11 23:57:19,400 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 23:57:19,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970183240] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:57:19,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 23:57:19,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 19 [2024-10-11 23:57:19,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058630563] [2024-10-11 23:57:19,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:57:19,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 23:57:19,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:57:19,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 23:57:19,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2024-10-11 23:57:19,401 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 47 [2024-10-11 23:57:19,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 422 transitions, 7331 flow. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:57:19,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:57:19,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 47 [2024-10-11 23:57:19,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:57:20,177 INFO L124 PetriNetUnfolderBase]: 1564/3733 cut-off events. [2024-10-11 23:57:20,178 INFO L125 PetriNetUnfolderBase]: For 51915/52195 co-relation queries the response was YES. [2024-10-11 23:57:20,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22104 conditions, 3733 events. 1564/3733 cut-off events. For 51915/52195 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 25869 event pairs, 404 based on Foata normal form. 160/3859 useless extension candidates. Maximal degree in co-relation 21905. Up to 1850 conditions per place. [2024-10-11 23:57:20,205 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 563 selfloop transitions, 26 changer transitions 0/608 dead transitions. [2024-10-11 23:57:20,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 608 transitions, 10970 flow [2024-10-11 23:57:20,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 23:57:20,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-11 23:57:20,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 225 transitions. [2024-10-11 23:57:20,206 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.598404255319149 [2024-10-11 23:57:20,206 INFO L175 Difference]: Start difference. First operand has 258 places, 422 transitions, 7331 flow. Second operand 8 states and 225 transitions. [2024-10-11 23:57:20,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 608 transitions, 10970 flow [2024-10-11 23:57:20,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 608 transitions, 10854 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 23:57:20,344 INFO L231 Difference]: Finished difference. Result has 268 places, 434 transitions, 7477 flow [2024-10-11 23:57:20,345 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7299, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7477, PETRI_PLACES=268, PETRI_TRANSITIONS=434} [2024-10-11 23:57:20,345 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 221 predicate places. [2024-10-11 23:57:20,345 INFO L471 AbstractCegarLoop]: Abstraction has has 268 places, 434 transitions, 7477 flow [2024-10-11 23:57:20,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:57:20,345 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:57:20,345 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:57:20,358 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-10-11 23:57:20,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-10-11 23:57:20,546 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-11 23:57:20,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:57:20,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1618849188, now seen corresponding path program 1 times [2024-10-11 23:57:20,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:57:20,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551803401] [2024-10-11 23:57:20,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:57:20,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:57:20,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:57:20,925 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-11 23:57:20,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:57:20,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551803401] [2024-10-11 23:57:20,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551803401] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:57:20,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255534746] [2024-10-11 23:57:20,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:57:20,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:57:20,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:57:20,927 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:57:20,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-11 23:57:21,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:57:21,028 INFO L255 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-10-11 23:57:21,030 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:57:21,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2024-10-11 23:57:21,283 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 28 [2024-10-11 23:57:21,499 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 32 [2024-10-11 23:57:21,551 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 30 [2024-10-11 23:57:21,601 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-11 23:57:21,601 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:57:29,393 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-11 23:57:29,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255534746] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:57:29,393 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:57:29,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 12] total 33 [2024-10-11 23:57:29,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286446182] [2024-10-11 23:57:29,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:57:29,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-10-11 23:57:29,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:57:29,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-10-11 23:57:29,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1032, Unknown=1, NotChecked=0, Total=1190 [2024-10-11 23:57:29,563 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-10-11 23:57:29,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 434 transitions, 7477 flow. Second operand has 35 states, 35 states have (on average 12.114285714285714) internal successors, (424), 35 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:57:29,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:57:29,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-10-11 23:57:29,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand