./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/fib_safe-11.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/fib_safe-11.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 67ab3b79be699544cc101a76da66f98a1e0e6116d5865ddc6f998abd49388964 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 23:41:45,768 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 23:41:45,843 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-14 23:41:45,855 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 23:41:45,855 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 23:41:45,887 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 23:41:45,887 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 23:41:45,888 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 23:41:45,889 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 23:41:45,890 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 23:41:45,890 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 23:41:45,891 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 23:41:45,891 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 23:41:45,892 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 23:41:45,894 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 23:41:45,894 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 23:41:45,894 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 23:41:45,895 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 23:41:45,895 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 23:41:45,895 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 23:41:45,896 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 23:41:45,900 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 23:41:45,900 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 23:41:45,900 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 23:41:45,901 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 23:41:45,901 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-14 23:41:45,901 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 23:41:45,901 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 23:41:45,901 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 23:41:45,902 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 23:41:45,902 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 23:41:45,902 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 23:41:45,902 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 23:41:45,903 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 23:41:45,903 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 23:41:45,903 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 23:41:45,903 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 23:41:45,903 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 23:41:45,904 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 23:41:45,904 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 23:41:45,904 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 23:41:45,905 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 23:41:45,905 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 23:41:45,906 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 23:41:45,906 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67ab3b79be699544cc101a76da66f98a1e0e6116d5865ddc6f998abd49388964 [2024-10-14 23:41:46,151 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 23:41:46,174 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 23:41:46,178 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 23:41:46,180 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 23:41:46,180 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 23:41:46,181 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/fib_safe-11.i [2024-10-14 23:41:47,683 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 23:41:47,921 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 23:41:47,921 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/fib_safe-11.i [2024-10-14 23:41:47,936 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c14fc0e0/4274d936ae32435c990e211e7f53a940/FLAGd820bdb09 [2024-10-14 23:41:48,247 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c14fc0e0/4274d936ae32435c990e211e7f53a940 [2024-10-14 23:41:48,249 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 23:41:48,251 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 23:41:48,252 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 23:41:48,252 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 23:41:48,259 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 23:41:48,259 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:41:48" (1/1) ... [2024-10-14 23:41:48,260 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@334ba715 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:41:48, skipping insertion in model container [2024-10-14 23:41:48,260 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:41:48" (1/1) ... [2024-10-14 23:41:48,308 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 23:41:48,644 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 23:41:48,657 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 23:41:48,714 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 23:41:48,748 INFO L204 MainTranslator]: Completed translation [2024-10-14 23:41:48,748 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:41:48 WrapperNode [2024-10-14 23:41:48,748 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 23:41:48,749 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 23:41:48,749 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 23:41:48,749 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 23:41:48,756 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:41:48" (1/1) ... [2024-10-14 23:41:48,767 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:41:48" (1/1) ... [2024-10-14 23:41:48,788 INFO L138 Inliner]: procedures = 164, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 72 [2024-10-14 23:41:48,789 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 23:41:48,790 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 23:41:48,790 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 23:41:48,790 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 23:41:48,800 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:41:48" (1/1) ... [2024-10-14 23:41:48,800 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:41:48" (1/1) ... [2024-10-14 23:41:48,805 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:41:48" (1/1) ... [2024-10-14 23:41:48,827 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-14 23:41:48,827 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:41:48" (1/1) ... [2024-10-14 23:41:48,828 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:41:48" (1/1) ... [2024-10-14 23:41:48,836 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:41:48" (1/1) ... [2024-10-14 23:41:48,841 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:41:48" (1/1) ... [2024-10-14 23:41:48,845 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:41:48" (1/1) ... [2024-10-14 23:41:48,847 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:41:48" (1/1) ... [2024-10-14 23:41:48,853 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 23:41:48,854 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 23:41:48,854 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 23:41:48,854 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 23:41:48,855 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:41:48" (1/1) ... [2024-10-14 23:41:48,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 23:41:48,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:41:48,896 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-14 23:41:48,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-14 23:41:48,949 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-10-14 23:41:48,949 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-10-14 23:41:48,949 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-10-14 23:41:48,949 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-10-14 23:41:48,949 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-14 23:41:48,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 23:41:48,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 23:41:48,950 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-14 23:41:48,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 23:41:48,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 23:41:48,951 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 23:41:49,072 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 23:41:49,074 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 23:41:49,256 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 23:41:49,256 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 23:41:49,494 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 23:41:49,497 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-14 23:41:49,497 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:41:49 BoogieIcfgContainer [2024-10-14 23:41:49,497 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 23:41:49,500 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 23:41:49,500 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 23:41:49,505 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 23:41:49,506 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:41:48" (1/3) ... [2024-10-14 23:41:49,507 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@251b6b89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:41:49, skipping insertion in model container [2024-10-14 23:41:49,507 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:41:48" (2/3) ... [2024-10-14 23:41:49,507 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@251b6b89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:41:49, skipping insertion in model container [2024-10-14 23:41:49,507 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:41:49" (3/3) ... [2024-10-14 23:41:49,509 INFO L112 eAbstractionObserver]: Analyzing ICFG fib_safe-11.i [2024-10-14 23:41:49,526 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 23:41:49,527 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-10-14 23:41:49,527 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 23:41:49,578 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 23:41:49,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 44 transitions, 96 flow [2024-10-14 23:41:49,654 INFO L124 PetriNetUnfolderBase]: 3/42 cut-off events. [2024-10-14 23:41:49,658 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 23:41:49,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 42 events. 3/42 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 117 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2024-10-14 23:41:49,662 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 44 transitions, 96 flow [2024-10-14 23:41:49,665 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 42 transitions, 90 flow [2024-10-14 23:41:49,676 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 23:41:49,684 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;@5849dbcd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 23:41:49,685 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2024-10-14 23:41:49,691 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 23:41:49,691 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2024-10-14 23:41:49,691 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 23:41:49,691 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:41:49,692 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:41:49,693 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-10-14 23:41:49,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:41:49,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1464023297, now seen corresponding path program 1 times [2024-10-14 23:41:49,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:41:49,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842937705] [2024-10-14 23:41:49,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:41:49,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:41:49,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:41:50,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:41:50,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:41:50,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842937705] [2024-10-14 23:41:50,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842937705] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:41:50,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:41:50,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 23:41:50,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111792730] [2024-10-14 23:41:50,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:41:50,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:41:50,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:41:50,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:41:50,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:41:50,091 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-10-14 23:41:50,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 42 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:41:50,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:41:50,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-10-14 23:41:50,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:41:50,374 INFO L124 PetriNetUnfolderBase]: 657/1293 cut-off events. [2024-10-14 23:41:50,375 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-14 23:41:50,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2312 conditions, 1293 events. 657/1293 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 8039 event pairs, 156 based on Foata normal form. 0/975 useless extension candidates. Maximal degree in co-relation 2296. Up to 514 conditions per place. [2024-10-14 23:41:50,393 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 46 selfloop transitions, 5 changer transitions 0/69 dead transitions. [2024-10-14 23:41:50,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 69 transitions, 249 flow [2024-10-14 23:41:50,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:41:50,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:41:50,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 135 transitions. [2024-10-14 23:41:50,407 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7670454545454546 [2024-10-14 23:41:50,408 INFO L175 Difference]: Start difference. First operand has 46 places, 42 transitions, 90 flow. Second operand 4 states and 135 transitions. [2024-10-14 23:41:50,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 69 transitions, 249 flow [2024-10-14 23:41:50,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 69 transitions, 246 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 23:41:50,416 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 119 flow [2024-10-14 23:41:50,420 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=119, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2024-10-14 23:41:50,426 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 2 predicate places. [2024-10-14 23:41:50,426 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 119 flow [2024-10-14 23:41:50,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:41:50,427 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:41:50,428 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:41:50,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 23:41:50,428 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-10-14 23:41:50,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:41:50,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1801374430, now seen corresponding path program 1 times [2024-10-14 23:41:50,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:41:50,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984609560] [2024-10-14 23:41:50,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:41:50,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:41:50,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:41:50,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:41:50,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:41:50,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984609560] [2024-10-14 23:41:50,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984609560] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:41:50,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:41:50,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 23:41:50,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978600611] [2024-10-14 23:41:50,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:41:50,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 23:41:50,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:41:50,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 23:41:50,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 23:41:50,562 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 44 [2024-10-14 23:41:50,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 119 flow. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:41:50,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:41:50,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 44 [2024-10-14 23:41:50,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:41:50,849 INFO L124 PetriNetUnfolderBase]: 1169/2451 cut-off events. [2024-10-14 23:41:50,850 INFO L125 PetriNetUnfolderBase]: For 333/333 co-relation queries the response was YES. [2024-10-14 23:41:50,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4923 conditions, 2451 events. 1169/2451 cut-off events. For 333/333 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 18190 event pairs, 379 based on Foata normal form. 53/2095 useless extension candidates. Maximal degree in co-relation 4907. Up to 1025 conditions per place. [2024-10-14 23:41:50,868 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 42 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2024-10-14 23:41:50,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 63 transitions, 263 flow [2024-10-14 23:41:50,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 23:41:50,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 23:41:50,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-10-14 23:41:50,872 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7727272727272727 [2024-10-14 23:41:50,872 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 119 flow. Second operand 3 states and 102 transitions. [2024-10-14 23:41:50,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 63 transitions, 263 flow [2024-10-14 23:41:50,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 63 transitions, 263 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 23:41:50,874 INFO L231 Difference]: Finished difference. Result has 51 places, 46 transitions, 131 flow [2024-10-14 23:41:50,875 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=51, PETRI_TRANSITIONS=46} [2024-10-14 23:41:50,876 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 5 predicate places. [2024-10-14 23:41:50,876 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 46 transitions, 131 flow [2024-10-14 23:41:50,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:41:50,877 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:41:50,877 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:41:50,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 23:41:50,878 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-10-14 23:41:50,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:41:50,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1822895874, now seen corresponding path program 1 times [2024-10-14 23:41:50,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:41:50,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039524359] [2024-10-14 23:41:50,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:41:50,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:41:50,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:41:50,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:41:50,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:41:50,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039524359] [2024-10-14 23:41:50,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039524359] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:41:50,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:41:50,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 23:41:50,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785150995] [2024-10-14 23:41:50,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:41:50,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:41:50,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:41:50,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:41:50,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:41:50,982 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2024-10-14 23:41:50,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 46 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:41:50,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:41:50,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2024-10-14 23:41:50,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:41:51,260 INFO L124 PetriNetUnfolderBase]: 1401/2500 cut-off events. [2024-10-14 23:41:51,260 INFO L125 PetriNetUnfolderBase]: For 470/520 co-relation queries the response was YES. [2024-10-14 23:41:51,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5615 conditions, 2500 events. 1401/2500 cut-off events. For 470/520 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 16320 event pairs, 357 based on Foata normal form. 116/2184 useless extension candidates. Maximal degree in co-relation 5596. Up to 1235 conditions per place. [2024-10-14 23:41:51,280 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 58 selfloop transitions, 3 changer transitions 0/78 dead transitions. [2024-10-14 23:41:51,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 78 transitions, 347 flow [2024-10-14 23:41:51,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:41:51,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:41:51,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 135 transitions. [2024-10-14 23:41:51,285 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7670454545454546 [2024-10-14 23:41:51,285 INFO L175 Difference]: Start difference. First operand has 51 places, 46 transitions, 131 flow. Second operand 4 states and 135 transitions. [2024-10-14 23:41:51,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 78 transitions, 347 flow [2024-10-14 23:41:51,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 78 transitions, 343 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 23:41:51,289 INFO L231 Difference]: Finished difference. Result has 55 places, 48 transitions, 153 flow [2024-10-14 23:41:51,289 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=153, PETRI_PLACES=55, PETRI_TRANSITIONS=48} [2024-10-14 23:41:51,290 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 9 predicate places. [2024-10-14 23:41:51,290 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 48 transitions, 153 flow [2024-10-14 23:41:51,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:41:51,290 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:41:51,291 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:41:51,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 23:41:51,291 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-10-14 23:41:51,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:41:51,291 INFO L85 PathProgramCache]: Analyzing trace with hash 8032759, now seen corresponding path program 1 times [2024-10-14 23:41:51,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:41:51,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911177720] [2024-10-14 23:41:51,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:41:51,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:41:51,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:41:51,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:41:51,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:41:51,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911177720] [2024-10-14 23:41:51,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911177720] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:41:51,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:41:51,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 23:41:51,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967483660] [2024-10-14 23:41:51,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:41:51,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 23:41:51,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:41:51,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 23:41:51,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 23:41:51,365 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 44 [2024-10-14 23:41:51,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 48 transitions, 153 flow. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:41:51,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:41:51,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 44 [2024-10-14 23:41:51,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:41:51,584 INFO L124 PetriNetUnfolderBase]: 1133/2318 cut-off events. [2024-10-14 23:41:51,585 INFO L125 PetriNetUnfolderBase]: For 616/766 co-relation queries the response was YES. [2024-10-14 23:41:51,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5144 conditions, 2318 events. 1133/2318 cut-off events. For 616/766 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 16948 event pairs, 365 based on Foata normal form. 90/1999 useless extension candidates. Maximal degree in co-relation 5122. Up to 993 conditions per place. [2024-10-14 23:41:51,599 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 44 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2024-10-14 23:41:51,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 66 transitions, 308 flow [2024-10-14 23:41:51,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 23:41:51,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 23:41:51,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-10-14 23:41:51,601 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7727272727272727 [2024-10-14 23:41:51,601 INFO L175 Difference]: Start difference. First operand has 55 places, 48 transitions, 153 flow. Second operand 3 states and 102 transitions. [2024-10-14 23:41:51,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 66 transitions, 308 flow [2024-10-14 23:41:51,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 66 transitions, 305 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 23:41:51,604 INFO L231 Difference]: Finished difference. Result has 57 places, 48 transitions, 159 flow [2024-10-14 23:41:51,604 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=159, PETRI_PLACES=57, PETRI_TRANSITIONS=48} [2024-10-14 23:41:51,605 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 11 predicate places. [2024-10-14 23:41:51,605 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 48 transitions, 159 flow [2024-10-14 23:41:51,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:41:51,606 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:41:51,606 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:41:51,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 23:41:51,606 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-10-14 23:41:51,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:41:51,608 INFO L85 PathProgramCache]: Analyzing trace with hash 266605758, now seen corresponding path program 1 times [2024-10-14 23:41:51,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:41:51,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815768442] [2024-10-14 23:41:51,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:41:51,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:41:51,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:41:51,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:41:51,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:41:51,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815768442] [2024-10-14 23:41:51,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815768442] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:41:51,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:41:51,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 23:41:51,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443642656] [2024-10-14 23:41:51,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:41:51,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:41:51,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:41:51,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:41:51,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:41:51,663 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2024-10-14 23:41:51,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 48 transitions, 159 flow. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:41:51,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:41:51,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2024-10-14 23:41:51,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:41:52,020 INFO L124 PetriNetUnfolderBase]: 2065/3713 cut-off events. [2024-10-14 23:41:52,022 INFO L125 PetriNetUnfolderBase]: For 1351/1759 co-relation queries the response was YES. [2024-10-14 23:41:52,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8812 conditions, 3713 events. 2065/3713 cut-off events. For 1351/1759 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 26402 event pairs, 457 based on Foata normal form. 253/3375 useless extension candidates. Maximal degree in co-relation 8788. Up to 2001 conditions per place. [2024-10-14 23:41:52,050 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 60 selfloop transitions, 3 changer transitions 0/81 dead transitions. [2024-10-14 23:41:52,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 81 transitions, 399 flow [2024-10-14 23:41:52,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:41:52,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:41:52,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 131 transitions. [2024-10-14 23:41:52,054 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7443181818181818 [2024-10-14 23:41:52,054 INFO L175 Difference]: Start difference. First operand has 57 places, 48 transitions, 159 flow. Second operand 4 states and 131 transitions. [2024-10-14 23:41:52,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 81 transitions, 399 flow [2024-10-14 23:41:52,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 81 transitions, 391 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 23:41:52,057 INFO L231 Difference]: Finished difference. Result has 60 places, 50 transitions, 179 flow [2024-10-14 23:41:52,058 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=179, PETRI_PLACES=60, PETRI_TRANSITIONS=50} [2024-10-14 23:41:52,060 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 14 predicate places. [2024-10-14 23:41:52,060 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 50 transitions, 179 flow [2024-10-14 23:41:52,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:41:52,061 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:41:52,061 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:41:52,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 23:41:52,061 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-10-14 23:41:52,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:41:52,062 INFO L85 PathProgramCache]: Analyzing trace with hash 249015829, now seen corresponding path program 1 times [2024-10-14 23:41:52,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:41:52,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287694647] [2024-10-14 23:41:52,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:41:52,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:41:52,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:41:52,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:41:52,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:41:52,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287694647] [2024-10-14 23:41:52,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287694647] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:41:52,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:41:52,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 23:41:52,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690504974] [2024-10-14 23:41:52,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:41:52,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:41:52,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:41:52,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:41:52,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:41:52,135 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-10-14 23:41:52,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 50 transitions, 179 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) [2024-10-14 23:41:52,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:41:52,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-10-14 23:41:52,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:41:52,484 INFO L124 PetriNetUnfolderBase]: 1601/3219 cut-off events. [2024-10-14 23:41:52,485 INFO L125 PetriNetUnfolderBase]: For 1181/1655 co-relation queries the response was YES. [2024-10-14 23:41:52,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7731 conditions, 3219 events. 1601/3219 cut-off events. For 1181/1655 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 24206 event pairs, 227 based on Foata normal form. 335/2961 useless extension candidates. Maximal degree in co-relation 7705. Up to 1673 conditions per place. [2024-10-14 23:41:52,505 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 62 selfloop transitions, 3 changer transitions 0/85 dead transitions. [2024-10-14 23:41:52,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 85 transitions, 445 flow [2024-10-14 23:41:52,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:41:52,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:41:52,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 133 transitions. [2024-10-14 23:41:52,506 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7556818181818182 [2024-10-14 23:41:52,507 INFO L175 Difference]: Start difference. First operand has 60 places, 50 transitions, 179 flow. Second operand 4 states and 133 transitions. [2024-10-14 23:41:52,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 85 transitions, 445 flow [2024-10-14 23:41:52,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 85 transitions, 441 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 23:41:52,510 INFO L231 Difference]: Finished difference. Result has 64 places, 51 transitions, 197 flow [2024-10-14 23:41:52,510 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=197, PETRI_PLACES=64, PETRI_TRANSITIONS=51} [2024-10-14 23:41:52,510 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 18 predicate places. [2024-10-14 23:41:52,511 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 51 transitions, 197 flow [2024-10-14 23:41:52,511 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) [2024-10-14 23:41:52,511 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:41:52,511 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:41:52,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-14 23:41:52,512 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-10-14 23:41:52,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:41:52,513 INFO L85 PathProgramCache]: Analyzing trace with hash 444542449, now seen corresponding path program 1 times [2024-10-14 23:41:52,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:41:52,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513839761] [2024-10-14 23:41:52,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:41:52,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:41:52,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:41:52,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:41:52,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:41:52,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513839761] [2024-10-14 23:41:52,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513839761] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:41:52,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:41:52,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 23:41:52,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589412326] [2024-10-14 23:41:52,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:41:52,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 23:41:52,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:41:52,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 23:41:52,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 23:41:52,589 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-10-14 23:41:52,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 51 transitions, 197 flow. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:41:52,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:41:52,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-10-14 23:41:52,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:41:52,811 INFO L124 PetriNetUnfolderBase]: 1121/2195 cut-off events. [2024-10-14 23:41:52,812 INFO L125 PetriNetUnfolderBase]: For 1435/1757 co-relation queries the response was YES. [2024-10-14 23:41:52,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6017 conditions, 2195 events. 1121/2195 cut-off events. For 1435/1757 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 14756 event pairs, 160 based on Foata normal form. 35/1912 useless extension candidates. Maximal degree in co-relation 5986. Up to 835 conditions per place. [2024-10-14 23:41:52,862 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 65 selfloop transitions, 6 changer transitions 0/91 dead transitions. [2024-10-14 23:41:52,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 91 transitions, 499 flow [2024-10-14 23:41:52,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 23:41:52,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 23:41:52,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 161 transitions. [2024-10-14 23:41:52,864 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7318181818181818 [2024-10-14 23:41:52,864 INFO L175 Difference]: Start difference. First operand has 64 places, 51 transitions, 197 flow. Second operand 5 states and 161 transitions. [2024-10-14 23:41:52,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 91 transitions, 499 flow [2024-10-14 23:41:52,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 91 transitions, 489 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 23:41:52,867 INFO L231 Difference]: Finished difference. Result has 67 places, 52 transitions, 217 flow [2024-10-14 23:41:52,868 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=217, PETRI_PLACES=67, PETRI_TRANSITIONS=52} [2024-10-14 23:41:52,869 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 21 predicate places. [2024-10-14 23:41:52,869 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 52 transitions, 217 flow [2024-10-14 23:41:52,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:41:52,870 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:41:52,870 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:41:52,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-14 23:41:52,870 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-10-14 23:41:52,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:41:52,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1079587370, now seen corresponding path program 1 times [2024-10-14 23:41:52,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:41:52,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569677379] [2024-10-14 23:41:52,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:41:52,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:41:52,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:41:52,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:41:52,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:41:52,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569677379] [2024-10-14 23:41:52,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569677379] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:41:52,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:41:52,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 23:41:52,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605847329] [2024-10-14 23:41:52,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:41:52,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 23:41:52,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:41:52,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 23:41:52,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-14 23:41:52,944 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-10-14 23:41:52,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 52 transitions, 217 flow. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:41:52,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:41:52,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-10-14 23:41:52,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:41:53,172 INFO L124 PetriNetUnfolderBase]: 1167/2324 cut-off events. [2024-10-14 23:41:53,173 INFO L125 PetriNetUnfolderBase]: For 1787/2048 co-relation queries the response was YES. [2024-10-14 23:41:53,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6629 conditions, 2324 events. 1167/2324 cut-off events. For 1787/2048 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 16002 event pairs, 223 based on Foata normal form. 72/2239 useless extension candidates. Maximal degree in co-relation 6596. Up to 1105 conditions per place. [2024-10-14 23:41:53,188 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 65 selfloop transitions, 7 changer transitions 0/92 dead transitions. [2024-10-14 23:41:53,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 92 transitions, 520 flow [2024-10-14 23:41:53,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 23:41:53,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 23:41:53,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 162 transitions. [2024-10-14 23:41:53,190 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7363636363636363 [2024-10-14 23:41:53,190 INFO L175 Difference]: Start difference. First operand has 67 places, 52 transitions, 217 flow. Second operand 5 states and 162 transitions. [2024-10-14 23:41:53,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 92 transitions, 520 flow [2024-10-14 23:41:53,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 92 transitions, 509 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-14 23:41:53,193 INFO L231 Difference]: Finished difference. Result has 69 places, 54 transitions, 242 flow [2024-10-14 23:41:53,194 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=242, PETRI_PLACES=69, PETRI_TRANSITIONS=54} [2024-10-14 23:41:53,194 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 23 predicate places. [2024-10-14 23:41:53,194 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 54 transitions, 242 flow [2024-10-14 23:41:53,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:41:53,195 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:41:53,195 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:41:53,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-14 23:41:53,195 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-10-14 23:41:53,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:41:53,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1079601649, now seen corresponding path program 1 times [2024-10-14 23:41:53,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:41:53,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937184448] [2024-10-14 23:41:53,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:41:53,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:41:53,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:41:53,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:41:53,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:41:53,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937184448] [2024-10-14 23:41:53,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937184448] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:41:53,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:41:53,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 23:41:53,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600339148] [2024-10-14 23:41:53,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:41:53,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 23:41:53,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:41:53,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 23:41:53,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-14 23:41:53,275 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-10-14 23:41:53,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 54 transitions, 242 flow. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:41:53,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:41:53,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-10-14 23:41:53,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:41:53,504 INFO L124 PetriNetUnfolderBase]: 1041/2086 cut-off events. [2024-10-14 23:41:53,504 INFO L125 PetriNetUnfolderBase]: For 2141/2375 co-relation queries the response was YES. [2024-10-14 23:41:53,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6218 conditions, 2086 events. 1041/2086 cut-off events. For 2141/2375 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 14082 event pairs, 265 based on Foata normal form. 70/2020 useless extension candidates. Maximal degree in co-relation 6184. Up to 1215 conditions per place. [2024-10-14 23:41:53,517 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 53 selfloop transitions, 5 changer transitions 0/78 dead transitions. [2024-10-14 23:41:53,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 78 transitions, 454 flow [2024-10-14 23:41:53,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 23:41:53,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 23:41:53,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 148 transitions. [2024-10-14 23:41:53,519 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6727272727272727 [2024-10-14 23:41:53,519 INFO L175 Difference]: Start difference. First operand has 69 places, 54 transitions, 242 flow. Second operand 5 states and 148 transitions. [2024-10-14 23:41:53,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 78 transitions, 454 flow [2024-10-14 23:41:53,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 78 transitions, 439 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-10-14 23:41:53,523 INFO L231 Difference]: Finished difference. Result has 71 places, 54 transitions, 243 flow [2024-10-14 23:41:53,523 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=243, PETRI_PLACES=71, PETRI_TRANSITIONS=54} [2024-10-14 23:41:53,524 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 25 predicate places. [2024-10-14 23:41:53,524 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 54 transitions, 243 flow [2024-10-14 23:41:53,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:41:53,524 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:41:53,524 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:41:53,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-14 23:41:53,525 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-10-14 23:41:53,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:41:53,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1079601650, now seen corresponding path program 1 times [2024-10-14 23:41:53,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:41:53,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399705898] [2024-10-14 23:41:53,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:41:53,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:41:53,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:41:53,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:41:53,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:41:53,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399705898] [2024-10-14 23:41:53,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399705898] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:41:53,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:41:53,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 23:41:53,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994527449] [2024-10-14 23:41:53,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:41:53,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 23:41:53,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:41:53,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 23:41:53,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-14 23:41:53,601 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-10-14 23:41:53,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 54 transitions, 243 flow. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:41:53,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:41:53,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-10-14 23:41:53,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:41:53,853 INFO L124 PetriNetUnfolderBase]: 1083/2163 cut-off events. [2024-10-14 23:41:53,854 INFO L125 PetriNetUnfolderBase]: For 2515/2758 co-relation queries the response was YES. [2024-10-14 23:41:53,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6507 conditions, 2163 events. 1083/2163 cut-off events. For 2515/2758 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 14609 event pairs, 258 based on Foata normal form. 70/2146 useless extension candidates. Maximal degree in co-relation 6472. Up to 1229 conditions per place. [2024-10-14 23:41:53,868 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 62 selfloop transitions, 7 changer transitions 0/89 dead transitions. [2024-10-14 23:41:53,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 89 transitions, 524 flow [2024-10-14 23:41:53,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 23:41:53,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 23:41:53,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 158 transitions. [2024-10-14 23:41:53,871 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7181818181818181 [2024-10-14 23:41:53,871 INFO L175 Difference]: Start difference. First operand has 71 places, 54 transitions, 243 flow. Second operand 5 states and 158 transitions. [2024-10-14 23:41:53,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 89 transitions, 524 flow [2024-10-14 23:41:53,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 89 transitions, 510 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-14 23:41:53,876 INFO L231 Difference]: Finished difference. Result has 72 places, 56 transitions, 265 flow [2024-10-14 23:41:53,877 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=265, PETRI_PLACES=72, PETRI_TRANSITIONS=56} [2024-10-14 23:41:53,877 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 26 predicate places. [2024-10-14 23:41:53,878 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 56 transitions, 265 flow [2024-10-14 23:41:53,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:41:53,879 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:41:53,879 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:41:53,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-14 23:41:53,879 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-10-14 23:41:53,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:41:53,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1022324864, now seen corresponding path program 1 times [2024-10-14 23:41:53,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:41:53,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361326871] [2024-10-14 23:41:53,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:41:53,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:41:53,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:41:53,947 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:41:53,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:41:53,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361326871] [2024-10-14 23:41:53,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361326871] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:41:53,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137079155] [2024-10-14 23:41:53,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:41:53,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:41:53,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:41:53,951 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:41:53,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 23:41:54,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:41:54,017 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 23:41:54,021 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:41:54,131 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:41:54,132 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 23:41:54,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137079155] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:41:54,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 23:41:54,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2024-10-14 23:41:54,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709053224] [2024-10-14 23:41:54,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:41:54,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:41:54,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:41:54,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:41:54,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-14 23:41:54,142 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 44 [2024-10-14 23:41:54,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 56 transitions, 265 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:41:54,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:41:54,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 44 [2024-10-14 23:41:54,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:41:54,368 INFO L124 PetriNetUnfolderBase]: 1083/2422 cut-off events. [2024-10-14 23:41:54,368 INFO L125 PetriNetUnfolderBase]: For 3742/4021 co-relation queries the response was YES. [2024-10-14 23:41:54,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7013 conditions, 2422 events. 1083/2422 cut-off events. For 3742/4021 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 18068 event pairs, 187 based on Foata normal form. 172/2509 useless extension candidates. Maximal degree in co-relation 6980. Up to 1216 conditions per place. [2024-10-14 23:41:54,384 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 54 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2024-10-14 23:41:54,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 77 transitions, 509 flow [2024-10-14 23:41:54,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:41:54,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:41:54,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 120 transitions. [2024-10-14 23:41:54,386 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6818181818181818 [2024-10-14 23:41:54,386 INFO L175 Difference]: Start difference. First operand has 72 places, 56 transitions, 265 flow. Second operand 4 states and 120 transitions. [2024-10-14 23:41:54,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 77 transitions, 509 flow [2024-10-14 23:41:54,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 77 transitions, 489 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-10-14 23:41:54,391 INFO L231 Difference]: Finished difference. Result has 72 places, 55 transitions, 254 flow [2024-10-14 23:41:54,392 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=254, PETRI_PLACES=72, PETRI_TRANSITIONS=55} [2024-10-14 23:41:54,392 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 26 predicate places. [2024-10-14 23:41:54,392 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 55 transitions, 254 flow [2024-10-14 23:41:54,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:41:54,393 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:41:54,393 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:41:54,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-14 23:41:54,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-14 23:41:54,594 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-10-14 23:41:54,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:41:54,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1387157528, now seen corresponding path program 1 times [2024-10-14 23:41:54,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:41:54,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586074170] [2024-10-14 23:41:54,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:41:54,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:41:54,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:41:54,667 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:41:54,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:41:54,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586074170] [2024-10-14 23:41:54,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586074170] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:41:54,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820000375] [2024-10-14 23:41:54,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:41:54,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:41:54,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:41:54,673 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:41:54,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 23:41:54,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:41:54,732 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-14 23:41:54,733 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:41:54,760 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:41:54,760 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 23:41:54,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820000375] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:41:54,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 23:41:54,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-10-14 23:41:54,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565203685] [2024-10-14 23:41:54,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:41:54,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 23:41:54,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:41:54,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 23:41:54,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-14 23:41:54,776 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2024-10-14 23:41:54,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 55 transitions, 254 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:41:54,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:41:54,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2024-10-14 23:41:54,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:41:55,097 INFO L124 PetriNetUnfolderBase]: 1453/2628 cut-off events. [2024-10-14 23:41:55,098 INFO L125 PetriNetUnfolderBase]: For 4353/4704 co-relation queries the response was YES. [2024-10-14 23:41:55,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8380 conditions, 2628 events. 1453/2628 cut-off events. For 4353/4704 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 17226 event pairs, 311 based on Foata normal form. 134/2659 useless extension candidates. Maximal degree in co-relation 8347. Up to 1048 conditions per place. [2024-10-14 23:41:55,115 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 84 selfloop transitions, 5 changer transitions 0/106 dead transitions. [2024-10-14 23:41:55,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 106 transitions, 678 flow [2024-10-14 23:41:55,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 23:41:55,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 23:41:55,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 182 transitions. [2024-10-14 23:41:55,117 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6893939393939394 [2024-10-14 23:41:55,117 INFO L175 Difference]: Start difference. First operand has 72 places, 55 transitions, 254 flow. Second operand 6 states and 182 transitions. [2024-10-14 23:41:55,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 106 transitions, 678 flow [2024-10-14 23:41:55,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 106 transitions, 672 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 23:41:55,124 INFO L231 Difference]: Finished difference. Result has 74 places, 54 transitions, 257 flow [2024-10-14 23:41:55,124 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=257, PETRI_PLACES=74, PETRI_TRANSITIONS=54} [2024-10-14 23:41:55,126 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 28 predicate places. [2024-10-14 23:41:55,126 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 54 transitions, 257 flow [2024-10-14 23:41:55,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:41:55,127 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:41:55,127 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:41:55,145 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-14 23:41:55,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-14 23:41:55,328 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-10-14 23:41:55,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:41:55,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1627299989, now seen corresponding path program 1 times [2024-10-14 23:41:55,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:41:55,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803095434] [2024-10-14 23:41:55,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:41:55,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:41:55,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:41:55,375 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:41:55,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:41:55,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803095434] [2024-10-14 23:41:55,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803095434] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:41:55,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563251537] [2024-10-14 23:41:55,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:41:55,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:41:55,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:41:55,379 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:41:55,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 23:41:55,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:41:55,435 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 23:41:55,436 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:41:55,509 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:41:55,509 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 23:41:55,555 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:41:55,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563251537] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 23:41:55,555 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 23:41:55,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2024-10-14 23:41:55,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762273408] [2024-10-14 23:41:55,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 23:41:55,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 23:41:55,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:41:55,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 23:41:55,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2024-10-14 23:41:55,570 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-10-14 23:41:55,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 54 transitions, 257 flow. Second operand has 8 states, 8 states have (on average 23.375) internal successors, (187), 8 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:41:55,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:41:55,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-10-14 23:41:55,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:41:56,233 INFO L124 PetriNetUnfolderBase]: 2907/6208 cut-off events. [2024-10-14 23:41:56,234 INFO L125 PetriNetUnfolderBase]: For 10495/11093 co-relation queries the response was YES. [2024-10-14 23:41:56,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17999 conditions, 6208 events. 2907/6208 cut-off events. For 10495/11093 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 50628 event pairs, 187 based on Foata normal form. 367/6490 useless extension candidates. Maximal degree in co-relation 17966. Up to 1217 conditions per place. [2024-10-14 23:41:56,272 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 129 selfloop transitions, 5 changer transitions 0/153 dead transitions. [2024-10-14 23:41:56,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 153 transitions, 1087 flow [2024-10-14 23:41:56,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 23:41:56,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 23:41:56,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 207 transitions. [2024-10-14 23:41:56,274 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7840909090909091 [2024-10-14 23:41:56,274 INFO L175 Difference]: Start difference. First operand has 74 places, 54 transitions, 257 flow. Second operand 6 states and 207 transitions. [2024-10-14 23:41:56,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 153 transitions, 1087 flow [2024-10-14 23:41:56,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 153 transitions, 1078 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-14 23:41:56,282 INFO L231 Difference]: Finished difference. Result has 79 places, 57 transitions, 288 flow [2024-10-14 23:41:56,282 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=288, PETRI_PLACES=79, PETRI_TRANSITIONS=57} [2024-10-14 23:41:56,283 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 33 predicate places. [2024-10-14 23:41:56,283 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 57 transitions, 288 flow [2024-10-14 23:41:56,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.375) internal successors, (187), 8 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:41:56,283 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:41:56,283 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:41:56,300 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-14 23:41:56,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:41:56,485 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-10-14 23:41:56,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:41:56,487 INFO L85 PathProgramCache]: Analyzing trace with hash -52210084, now seen corresponding path program 1 times [2024-10-14 23:41:56,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:41:56,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897893397] [2024-10-14 23:41:56,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:41:56,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:41:56,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:41:56,568 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 23:41:56,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:41:56,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897893397] [2024-10-14 23:41:56,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897893397] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:41:56,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:41:56,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 23:41:56,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139740832] [2024-10-14 23:41:56,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:41:56,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:41:56,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:41:56,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:41:56,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:41:56,577 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 44 [2024-10-14 23:41:56,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 57 transitions, 288 flow. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:41:56,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:41:56,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 44 [2024-10-14 23:41:56,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:41:57,205 INFO L124 PetriNetUnfolderBase]: 4097/7261 cut-off events. [2024-10-14 23:41:57,206 INFO L125 PetriNetUnfolderBase]: For 13419/14315 co-relation queries the response was YES. [2024-10-14 23:41:57,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23652 conditions, 7261 events. 4097/7261 cut-off events. For 13419/14315 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 52374 event pairs, 2101 based on Foata normal form. 306/7400 useless extension candidates. Maximal degree in co-relation 23616. Up to 3923 conditions per place. [2024-10-14 23:41:57,262 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 77 selfloop transitions, 6 changer transitions 0/99 dead transitions. [2024-10-14 23:41:57,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 99 transitions, 682 flow [2024-10-14 23:41:57,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:41:57,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:41:57,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 124 transitions. [2024-10-14 23:41:57,264 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7045454545454546 [2024-10-14 23:41:57,265 INFO L175 Difference]: Start difference. First operand has 79 places, 57 transitions, 288 flow. Second operand 4 states and 124 transitions. [2024-10-14 23:41:57,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 99 transitions, 682 flow [2024-10-14 23:41:57,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 99 transitions, 646 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-10-14 23:41:57,284 INFO L231 Difference]: Finished difference. Result has 79 places, 57 transitions, 288 flow [2024-10-14 23:41:57,284 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=288, PETRI_PLACES=79, PETRI_TRANSITIONS=57} [2024-10-14 23:41:57,284 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 33 predicate places. [2024-10-14 23:41:57,285 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 57 transitions, 288 flow [2024-10-14 23:41:57,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:41:57,285 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:41:57,285 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:41:57,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-14 23:41:57,285 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-10-14 23:41:57,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:41:57,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1228200713, now seen corresponding path program 1 times [2024-10-14 23:41:57,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:41:57,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525482161] [2024-10-14 23:41:57,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:41:57,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:41:57,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:41:57,512 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:41:57,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:41:57,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525482161] [2024-10-14 23:41:57,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525482161] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:41:57,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510813132] [2024-10-14 23:41:57,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:41:57,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:41:57,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:41:57,516 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:41:57,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-14 23:41:57,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:41:57,584 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-14 23:41:57,586 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:41:57,620 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:41:57,620 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 23:41:57,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510813132] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:41:57,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 23:41:57,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-10-14 23:41:57,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888720283] [2024-10-14 23:41:57,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:41:57,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 23:41:57,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:41:57,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 23:41:57,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-14 23:41:57,635 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2024-10-14 23:41:57,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 57 transitions, 288 flow. Second operand has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:41:57,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:41:57,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2024-10-14 23:41:57,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:41:58,354 INFO L124 PetriNetUnfolderBase]: 3691/6641 cut-off events. [2024-10-14 23:41:58,354 INFO L125 PetriNetUnfolderBase]: For 13177/13600 co-relation queries the response was YES. [2024-10-14 23:41:58,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21306 conditions, 6641 events. 3691/6641 cut-off events. For 13177/13600 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 48736 event pairs, 815 based on Foata normal form. 162/6591 useless extension candidates. Maximal degree in co-relation 21270. Up to 2628 conditions per place. [2024-10-14 23:41:58,404 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 90 selfloop transitions, 5 changer transitions 0/111 dead transitions. [2024-10-14 23:41:58,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 111 transitions, 769 flow [2024-10-14 23:41:58,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 23:41:58,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 23:41:58,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 176 transitions. [2024-10-14 23:41:58,406 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-10-14 23:41:58,406 INFO L175 Difference]: Start difference. First operand has 79 places, 57 transitions, 288 flow. Second operand 6 states and 176 transitions. [2024-10-14 23:41:58,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 111 transitions, 769 flow [2024-10-14 23:41:58,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 111 transitions, 755 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 23:41:58,420 INFO L231 Difference]: Finished difference. Result has 81 places, 56 transitions, 286 flow [2024-10-14 23:41:58,421 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=286, PETRI_PLACES=81, PETRI_TRANSITIONS=56} [2024-10-14 23:41:58,421 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 35 predicate places. [2024-10-14 23:41:58,421 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 56 transitions, 286 flow [2024-10-14 23:41:58,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:41:58,422 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:41:58,422 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:41:58,439 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-14 23:41:58,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-14 23:41:58,627 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-10-14 23:41:58,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:41:58,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1093307593, now seen corresponding path program 1 times [2024-10-14 23:41:58,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:41:58,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094124618] [2024-10-14 23:41:58,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:41:58,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:41:58,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:41:58,684 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:41:58,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:41:58,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094124618] [2024-10-14 23:41:58,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094124618] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:41:58,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140401041] [2024-10-14 23:41:58,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:41:58,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:41:58,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:41:58,687 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:41:58,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-14 23:41:58,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:41:58,747 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 23:41:58,748 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:41:58,779 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:41:58,779 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 23:41:58,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140401041] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:41:58,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 23:41:58,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-10-14 23:41:58,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880544464] [2024-10-14 23:41:58,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:41:58,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 23:41:58,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:41:58,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 23:41:58,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-14 23:41:58,789 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2024-10-14 23:41:58,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 56 transitions, 286 flow. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:41:58,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:41:58,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2024-10-14 23:41:58,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:41:59,273 INFO L124 PetriNetUnfolderBase]: 3819/6579 cut-off events. [2024-10-14 23:41:59,273 INFO L125 PetriNetUnfolderBase]: For 14016/14223 co-relation queries the response was YES. [2024-10-14 23:41:59,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22099 conditions, 6579 events. 3819/6579 cut-off events. For 14016/14223 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 45437 event pairs, 1663 based on Foata normal form. 228/6439 useless extension candidates. Maximal degree in co-relation 22062. Up to 3155 conditions per place. [2024-10-14 23:41:59,315 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 53 selfloop transitions, 8 changer transitions 0/77 dead transitions. [2024-10-14 23:41:59,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 77 transitions, 539 flow [2024-10-14 23:41:59,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:41:59,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:41:59,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 113 transitions. [2024-10-14 23:41:59,316 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6420454545454546 [2024-10-14 23:41:59,316 INFO L175 Difference]: Start difference. First operand has 81 places, 56 transitions, 286 flow. Second operand 4 states and 113 transitions. [2024-10-14 23:41:59,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 77 transitions, 539 flow [2024-10-14 23:41:59,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 77 transitions, 533 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-14 23:41:59,334 INFO L231 Difference]: Finished difference. Result has 80 places, 55 transitions, 293 flow [2024-10-14 23:41:59,334 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=293, PETRI_PLACES=80, PETRI_TRANSITIONS=55} [2024-10-14 23:41:59,335 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 34 predicate places. [2024-10-14 23:41:59,335 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 55 transitions, 293 flow [2024-10-14 23:41:59,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:41:59,335 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:41:59,335 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:41:59,352 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-14 23:41:59,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-14 23:41:59,536 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-10-14 23:41:59,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:41:59,537 INFO L85 PathProgramCache]: Analyzing trace with hash 381587199, now seen corresponding path program 1 times [2024-10-14 23:41:59,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:41:59,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090373357] [2024-10-14 23:41:59,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:41:59,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:41:59,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:41:59,626 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:41:59,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:41:59,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090373357] [2024-10-14 23:41:59,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090373357] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:41:59,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184296008] [2024-10-14 23:41:59,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:41:59,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:41:59,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:41:59,629 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:41:59,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-14 23:41:59,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:41:59,693 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-14 23:41:59,695 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:41:59,787 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:41:59,787 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 23:41:59,858 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:41:59,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184296008] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 23:41:59,858 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 23:41:59,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2024-10-14 23:41:59,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83118797] [2024-10-14 23:41:59,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 23:41:59,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-14 23:41:59,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:41:59,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-14 23:41:59,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2024-10-14 23:41:59,882 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-10-14 23:41:59,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 55 transitions, 293 flow. Second operand has 14 states, 14 states have (on average 22.642857142857142) internal successors, (317), 14 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:41:59,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:41:59,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-10-14 23:41:59,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:42:02,594 INFO L124 PetriNetUnfolderBase]: 11247/21497 cut-off events. [2024-10-14 23:42:02,595 INFO L125 PetriNetUnfolderBase]: For 54578/55667 co-relation queries the response was YES. [2024-10-14 23:42:02,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74606 conditions, 21497 events. 11247/21497 cut-off events. For 54578/55667 co-relation queries the response was YES. Maximal size of possible extension queue 722. Compared 191863 event pairs, 341 based on Foata normal form. 1442/22882 useless extension candidates. Maximal degree in co-relation 74567. Up to 4201 conditions per place. [2024-10-14 23:42:02,733 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 393 selfloop transitions, 71 changer transitions 0/480 dead transitions. [2024-10-14 23:42:02,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 480 transitions, 3763 flow [2024-10-14 23:42:02,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-10-14 23:42:02,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-10-14 23:42:02,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 905 transitions. [2024-10-14 23:42:02,736 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.734577922077922 [2024-10-14 23:42:02,736 INFO L175 Difference]: Start difference. First operand has 80 places, 55 transitions, 293 flow. Second operand 28 states and 905 transitions. [2024-10-14 23:42:02,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 480 transitions, 3763 flow [2024-10-14 23:42:02,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 480 transitions, 3411 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-14 23:42:02,803 INFO L231 Difference]: Finished difference. Result has 120 places, 127 transitions, 1145 flow [2024-10-14 23:42:02,803 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1145, PETRI_PLACES=120, PETRI_TRANSITIONS=127} [2024-10-14 23:42:02,804 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 74 predicate places. [2024-10-14 23:42:02,804 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 127 transitions, 1145 flow [2024-10-14 23:42:02,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 22.642857142857142) internal successors, (317), 14 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:42:02,805 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:42:02,805 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:42:02,818 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-14 23:42:03,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-14 23:42:03,006 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-10-14 23:42:03,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:42:03,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1139380794, now seen corresponding path program 1 times [2024-10-14 23:42:03,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:42:03,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977144749] [2024-10-14 23:42:03,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:42:03,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:42:03,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:42:03,068 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:42:03,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:42:03,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977144749] [2024-10-14 23:42:03,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977144749] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:42:03,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350108131] [2024-10-14 23:42:03,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:42:03,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:42:03,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:42:03,072 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:42:03,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-14 23:42:03,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:42:03,131 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-14 23:42:03,132 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:42:03,216 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:42:03,216 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 23:42:03,290 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:42:03,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350108131] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 23:42:03,291 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 23:42:03,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2024-10-14 23:42:03,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63421524] [2024-10-14 23:42:03,292 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 23:42:03,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-14 23:42:03,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:42:03,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-14 23:42:03,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2024-10-14 23:42:03,317 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-10-14 23:42:03,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 127 transitions, 1145 flow. Second operand has 14 states, 14 states have (on average 22.642857142857142) internal successors, (317), 14 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:42:03,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:42:03,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-10-14 23:42:03,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:42:05,934 INFO L124 PetriNetUnfolderBase]: 10527/20471 cut-off events. [2024-10-14 23:42:05,935 INFO L125 PetriNetUnfolderBase]: For 212868/214080 co-relation queries the response was YES. [2024-10-14 23:42:06,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87501 conditions, 20471 events. 10527/20471 cut-off events. For 212868/214080 co-relation queries the response was YES. Maximal size of possible extension queue 695. Compared 184151 event pairs, 413 based on Foata normal form. 1962/22412 useless extension candidates. Maximal degree in co-relation 87444. Up to 5328 conditions per place. [2024-10-14 23:42:06,152 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 163 selfloop transitions, 46 changer transitions 0/225 dead transitions. [2024-10-14 23:42:06,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 225 transitions, 2318 flow [2024-10-14 23:42:06,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-14 23:42:06,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-14 23:42:06,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 353 transitions. [2024-10-14 23:42:06,156 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6685606060606061 [2024-10-14 23:42:06,156 INFO L175 Difference]: Start difference. First operand has 120 places, 127 transitions, 1145 flow. Second operand 12 states and 353 transitions. [2024-10-14 23:42:06,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 225 transitions, 2318 flow [2024-10-14 23:42:06,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 225 transitions, 1963 flow, removed 154 selfloop flow, removed 12 redundant places. [2024-10-14 23:42:06,721 INFO L231 Difference]: Finished difference. Result has 117 places, 110 transitions, 1005 flow [2024-10-14 23:42:06,722 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=549, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1005, PETRI_PLACES=117, PETRI_TRANSITIONS=110} [2024-10-14 23:42:06,722 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 71 predicate places. [2024-10-14 23:42:06,722 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 110 transitions, 1005 flow [2024-10-14 23:42:06,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 22.642857142857142) internal successors, (317), 14 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:42:06,723 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:42:06,723 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:42:06,740 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-14 23:42:06,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:42:06,924 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-10-14 23:42:06,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:42:06,924 INFO L85 PathProgramCache]: Analyzing trace with hash 580483896, now seen corresponding path program 1 times [2024-10-14 23:42:06,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:42:06,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971370150] [2024-10-14 23:42:06,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:42:06,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:42:06,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:42:06,963 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 23:42:06,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:42:06,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971370150] [2024-10-14 23:42:06,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971370150] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:42:06,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:42:06,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 23:42:06,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464607501] [2024-10-14 23:42:06,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:42:06,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:42:06,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:42:06,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:42:06,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:42:06,975 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 44 [2024-10-14 23:42:06,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 110 transitions, 1005 flow. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:42:06,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:42:06,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 44 [2024-10-14 23:42:06,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:42:10,083 INFO L124 PetriNetUnfolderBase]: 16719/28403 cut-off events. [2024-10-14 23:42:10,084 INFO L125 PetriNetUnfolderBase]: For 222920/224114 co-relation queries the response was YES. [2024-10-14 23:42:10,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116070 conditions, 28403 events. 16719/28403 cut-off events. For 222920/224114 co-relation queries the response was YES. Maximal size of possible extension queue 902. Compared 238679 event pairs, 5881 based on Foata normal form. 972/29009 useless extension candidates. Maximal degree in co-relation 116016. Up to 12541 conditions per place. [2024-10-14 23:42:10,329 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 166 selfloop transitions, 6 changer transitions 0/186 dead transitions. [2024-10-14 23:42:10,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 186 transitions, 2029 flow [2024-10-14 23:42:10,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:42:10,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:42:10,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2024-10-14 23:42:10,330 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6590909090909091 [2024-10-14 23:42:10,330 INFO L175 Difference]: Start difference. First operand has 117 places, 110 transitions, 1005 flow. Second operand 4 states and 116 transitions. [2024-10-14 23:42:10,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 186 transitions, 2029 flow [2024-10-14 23:42:11,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 186 transitions, 1787 flow, removed 109 selfloop flow, removed 7 redundant places. [2024-10-14 23:42:11,035 INFO L231 Difference]: Finished difference. Result has 113 places, 110 transitions, 851 flow [2024-10-14 23:42:11,035 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=831, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=851, PETRI_PLACES=113, PETRI_TRANSITIONS=110} [2024-10-14 23:42:11,035 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 67 predicate places. [2024-10-14 23:42:11,036 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 110 transitions, 851 flow [2024-10-14 23:42:11,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:42:11,036 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:42:11,036 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:42:11,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-14 23:42:11,036 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-10-14 23:42:11,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:42:11,036 INFO L85 PathProgramCache]: Analyzing trace with hash 467203270, now seen corresponding path program 1 times [2024-10-14 23:42:11,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:42:11,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136771812] [2024-10-14 23:42:11,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:42:11,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:42:11,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:42:11,062 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 23:42:11,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:42:11,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136771812] [2024-10-14 23:42:11,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136771812] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:42:11,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:42:11,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 23:42:11,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84772623] [2024-10-14 23:42:11,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:42:11,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:42:11,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:42:11,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:42:11,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:42:11,070 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2024-10-14 23:42:11,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 110 transitions, 851 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) [2024-10-14 23:42:11,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:42:11,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2024-10-14 23:42:11,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:42:14,125 INFO L124 PetriNetUnfolderBase]: 13442/23808 cut-off events. [2024-10-14 23:42:14,125 INFO L125 PetriNetUnfolderBase]: For 207598/207598 co-relation queries the response was YES. [2024-10-14 23:42:14,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95005 conditions, 23808 events. 13442/23808 cut-off events. For 207598/207598 co-relation queries the response was YES. Maximal size of possible extension queue 748. Compared 201368 event pairs, 2818 based on Foata normal form. 0/23649 useless extension candidates. Maximal degree in co-relation 94954. Up to 10429 conditions per place. [2024-10-14 23:42:14,334 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 239 selfloop transitions, 9 changer transitions 0/264 dead transitions. [2024-10-14 23:42:14,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 264 transitions, 2747 flow [2024-10-14 23:42:14,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:42:14,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:42:14,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2024-10-14 23:42:14,335 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6761363636363636 [2024-10-14 23:42:14,335 INFO L175 Difference]: Start difference. First operand has 113 places, 110 transitions, 851 flow. Second operand 4 states and 119 transitions. [2024-10-14 23:42:14,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 264 transitions, 2747 flow [2024-10-14 23:42:14,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 264 transitions, 2675 flow, removed 30 selfloop flow, removed 2 redundant places. [2024-10-14 23:42:14,569 INFO L231 Difference]: Finished difference. Result has 114 places, 110 transitions, 845 flow [2024-10-14 23:42:14,569 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=819, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=845, PETRI_PLACES=114, PETRI_TRANSITIONS=110} [2024-10-14 23:42:14,569 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 68 predicate places. [2024-10-14 23:42:14,570 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 110 transitions, 845 flow [2024-10-14 23:42:14,570 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) [2024-10-14 23:42:14,570 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:42:14,570 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:42:14,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-14 23:42:14,570 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-10-14 23:42:14,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:42:14,570 INFO L85 PathProgramCache]: Analyzing trace with hash 749651250, now seen corresponding path program 1 times [2024-10-14 23:42:14,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:42:14,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242510461] [2024-10-14 23:42:14,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:42:14,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:42:14,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:42:14,646 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:42:14,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:42:14,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242510461] [2024-10-14 23:42:14,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242510461] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:42:14,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499372804] [2024-10-14 23:42:14,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:42:14,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:42:14,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:42:14,649 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:42:14,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-14 23:42:14,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:42:14,700 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 23:42:14,701 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:42:14,812 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:42:14,813 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 23:42:14,907 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:42:14,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499372804] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 23:42:14,908 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 23:42:14,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2024-10-14 23:42:14,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544532808] [2024-10-14 23:42:14,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 23:42:14,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-14 23:42:14,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:42:14,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-14 23:42:14,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2024-10-14 23:42:14,938 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-10-14 23:42:14,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 110 transitions, 845 flow. Second operand has 17 states, 17 states have (on average 22.529411764705884) internal successors, (383), 17 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:42:14,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:42:14,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-10-14 23:42:14,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:42:18,474 INFO L124 PetriNetUnfolderBase]: 14167/27349 cut-off events. [2024-10-14 23:42:18,474 INFO L125 PetriNetUnfolderBase]: For 174170/174170 co-relation queries the response was YES. [2024-10-14 23:42:18,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107269 conditions, 27349 events. 14167/27349 cut-off events. For 174170/174170 co-relation queries the response was YES. Maximal size of possible extension queue 875. Compared 253429 event pairs, 503 based on Foata normal form. 1216/28508 useless extension candidates. Maximal degree in co-relation 107214. Up to 8281 conditions per place. [2024-10-14 23:42:19,000 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 312 selfloop transitions, 56 changer transitions 0/384 dead transitions. [2024-10-14 23:42:19,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 384 transitions, 3259 flow [2024-10-14 23:42:19,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-14 23:42:19,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-14 23:42:19,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 652 transitions. [2024-10-14 23:42:19,003 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7056277056277056 [2024-10-14 23:42:19,003 INFO L175 Difference]: Start difference. First operand has 114 places, 110 transitions, 845 flow. Second operand 21 states and 652 transitions. [2024-10-14 23:42:19,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 384 transitions, 3259 flow [2024-10-14 23:42:19,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 384 transitions, 3041 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 23:42:19,414 INFO L231 Difference]: Finished difference. Result has 137 places, 126 transitions, 1177 flow [2024-10-14 23:42:19,414 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=771, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1177, PETRI_PLACES=137, PETRI_TRANSITIONS=126} [2024-10-14 23:42:19,414 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 91 predicate places. [2024-10-14 23:42:19,415 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 126 transitions, 1177 flow [2024-10-14 23:42:19,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 22.529411764705884) internal successors, (383), 17 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:42:19,415 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:42:19,415 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:42:19,431 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-14 23:42:19,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-10-14 23:42:19,616 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-10-14 23:42:19,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:42:19,616 INFO L85 PathProgramCache]: Analyzing trace with hash -179984683, now seen corresponding path program 1 times [2024-10-14 23:42:19,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:42:19,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910947193] [2024-10-14 23:42:19,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:42:19,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:42:19,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:42:19,736 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:42:19,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:42:19,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910947193] [2024-10-14 23:42:19,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910947193] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:42:19,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169212586] [2024-10-14 23:42:19,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:42:19,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:42:19,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:42:19,739 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:42:19,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-14 23:42:19,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:42:19,800 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-14 23:42:19,801 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:42:19,933 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:42:19,933 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 23:42:20,045 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:42:20,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169212586] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 23:42:20,046 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 23:42:20,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2024-10-14 23:42:20,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845189427] [2024-10-14 23:42:20,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 23:42:20,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-14 23:42:20,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:42:20,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-14 23:42:20,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2024-10-14 23:42:20,083 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-10-14 23:42:20,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 126 transitions, 1177 flow. Second operand has 20 states, 20 states have (on average 22.45) internal successors, (449), 20 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:42:20,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:42:20,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-10-14 23:42:20,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:42:27,324 INFO L124 PetriNetUnfolderBase]: 27307/52855 cut-off events. [2024-10-14 23:42:27,325 INFO L125 PetriNetUnfolderBase]: For 613306/613306 co-relation queries the response was YES. [2024-10-14 23:42:27,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208907 conditions, 52855 events. 27307/52855 cut-off events. For 613306/613306 co-relation queries the response was YES. Maximal size of possible extension queue 1558. Compared 528859 event pairs, 1331 based on Foata normal form. 3420/56182 useless extension candidates. Maximal degree in co-relation 208844. Up to 7651 conditions per place. [2024-10-14 23:42:27,866 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 529 selfloop transitions, 124 changer transitions 0/669 dead transitions. [2024-10-14 23:42:27,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 669 transitions, 5712 flow [2024-10-14 23:42:27,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-10-14 23:42:27,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-10-14 23:42:27,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1159 transitions. [2024-10-14 23:42:27,868 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.711916461916462 [2024-10-14 23:42:27,868 INFO L175 Difference]: Start difference. First operand has 137 places, 126 transitions, 1177 flow. Second operand 37 states and 1159 transitions. [2024-10-14 23:42:27,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 669 transitions, 5712 flow [2024-10-14 23:42:28,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 669 transitions, 5598 flow, removed 37 selfloop flow, removed 12 redundant places. [2024-10-14 23:42:28,947 INFO L231 Difference]: Finished difference. Result has 175 places, 188 transitions, 2231 flow [2024-10-14 23:42:28,947 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1053, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=2231, PETRI_PLACES=175, PETRI_TRANSITIONS=188} [2024-10-14 23:42:28,948 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 129 predicate places. [2024-10-14 23:42:28,948 INFO L471 AbstractCegarLoop]: Abstraction has has 175 places, 188 transitions, 2231 flow [2024-10-14 23:42:28,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 22.45) internal successors, (449), 20 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:42:28,948 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:42:28,948 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:42:28,960 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-14 23:42:29,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:42:29,149 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-10-14 23:42:29,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:42:29,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1623322012, now seen corresponding path program 1 times [2024-10-14 23:42:29,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:42:29,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890451634] [2024-10-14 23:42:29,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:42:29,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:42:29,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:42:29,279 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:42:29,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:42:29,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890451634] [2024-10-14 23:42:29,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890451634] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:42:29,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892365114] [2024-10-14 23:42:29,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:42:29,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:42:29,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:42:29,282 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:42:29,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-14 23:42:29,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:42:29,340 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-14 23:42:29,341 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:42:29,489 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:42:29,489 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 23:42:29,780 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:42:29,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892365114] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 23:42:29,781 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 23:42:29,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2024-10-14 23:42:29,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007382026] [2024-10-14 23:42:29,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 23:42:29,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-14 23:42:29,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:42:29,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-14 23:42:29,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=357, Unknown=0, NotChecked=0, Total=506 [2024-10-14 23:42:29,831 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-10-14 23:42:29,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 188 transitions, 2231 flow. Second operand has 23 states, 23 states have (on average 22.391304347826086) internal successors, (515), 23 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:42:29,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:42:29,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-10-14 23:42:29,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:42:47,541 INFO L124 PetriNetUnfolderBase]: 54019/105829 cut-off events. [2024-10-14 23:42:47,542 INFO L125 PetriNetUnfolderBase]: For 1771096/1771096 co-relation queries the response was YES. [2024-10-14 23:42:48,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 443904 conditions, 105829 events. 54019/105829 cut-off events. For 1771096/1771096 co-relation queries the response was YES. Maximal size of possible extension queue 3022. Compared 1170212 event pairs, 1727 based on Foata normal form. 3690/109426 useless extension candidates. Maximal degree in co-relation 443824. Up to 13693 conditions per place. [2024-10-14 23:42:49,139 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 586 selfloop transitions, 256 changer transitions 0/858 dead transitions. [2024-10-14 23:42:49,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 858 transitions, 8746 flow [2024-10-14 23:42:49,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-10-14 23:42:49,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2024-10-14 23:42:49,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 1225 transitions. [2024-10-14 23:42:49,141 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7138694638694638 [2024-10-14 23:42:49,141 INFO L175 Difference]: Start difference. First operand has 175 places, 188 transitions, 2231 flow. Second operand 39 states and 1225 transitions. [2024-10-14 23:42:49,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 858 transitions, 8746 flow