./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.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 4a65477eb93c2031bed3e6d454d38e75e9833f23496d456d5084dd6ae5f38687 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 23:33:46,986 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 23:33:47,069 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-24 23:33:47,075 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 23:33:47,077 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 23:33:47,108 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 23:33:47,109 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 23:33:47,109 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 23:33:47,110 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 23:33:47,110 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 23:33:47,111 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 23:33:47,111 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 23:33:47,112 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 23:33:47,112 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 23:33:47,112 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 23:33:47,113 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 23:33:47,113 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 23:33:47,113 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 23:33:47,114 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 23:33:47,114 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 23:33:47,114 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 23:33:47,118 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 23:33:47,118 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 23:33:47,118 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 23:33:47,119 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 23:33:47,119 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-24 23:33:47,119 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 23:33:47,119 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 23:33:47,120 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 23:33:47,120 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 23:33:47,120 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 23:33:47,120 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 23:33:47,121 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 23:33:47,121 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 23:33:47,124 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 23:33:47,124 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 23:33:47,125 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 23:33:47,125 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 23:33:47,125 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 23:33:47,125 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 23:33:47,125 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 23:33:47,127 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 23:33:47,127 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 23:33:47,127 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 23:33:47,127 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a65477eb93c2031bed3e6d454d38e75e9833f23496d456d5084dd6ae5f38687 [2024-10-24 23:33:47,362 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 23:33:47,387 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 23:33:47,391 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 23:33:47,393 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 23:33:47,393 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 23:33:47,394 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i [2024-10-24 23:33:48,858 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 23:33:49,096 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 23:33:49,097 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i [2024-10-24 23:33:49,111 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cabb8b9fb/be14b78cc71d46749c6fb6dacafabeeb/FLAG648fc85bb [2024-10-24 23:33:49,123 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cabb8b9fb/be14b78cc71d46749c6fb6dacafabeeb [2024-10-24 23:33:49,126 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 23:33:49,128 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 23:33:49,130 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 23:33:49,130 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 23:33:49,135 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 23:33:49,136 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:33:49" (1/1) ... [2024-10-24 23:33:49,139 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2889785f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:33:49, skipping insertion in model container [2024-10-24 23:33:49,139 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:33:49" (1/1) ... [2024-10-24 23:33:49,185 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 23:33:49,487 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 23:33:49,500 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 23:33:49,561 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 23:33:49,600 INFO L204 MainTranslator]: Completed translation [2024-10-24 23:33:49,601 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:33:49 WrapperNode [2024-10-24 23:33:49,601 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 23:33:49,602 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 23:33:49,602 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 23:33:49,602 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 23:33:49,609 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:33:49" (1/1) ... [2024-10-24 23:33:49,622 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:33:49" (1/1) ... [2024-10-24 23:33:49,646 INFO L138 Inliner]: procedures = 165, calls = 24, calls flagged for inlining = 8, calls inlined = 9, statements flattened = 109 [2024-10-24 23:33:49,648 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 23:33:49,649 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 23:33:49,649 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 23:33:49,649 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 23:33:49,659 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:33:49" (1/1) ... [2024-10-24 23:33:49,659 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:33:49" (1/1) ... [2024-10-24 23:33:49,663 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:33:49" (1/1) ... [2024-10-24 23:33:49,688 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5]. The 0 writes are split as follows [0, 0]. [2024-10-24 23:33:49,689 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:33:49" (1/1) ... [2024-10-24 23:33:49,692 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:33:49" (1/1) ... [2024-10-24 23:33:49,696 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:33:49" (1/1) ... [2024-10-24 23:33:49,703 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:33:49" (1/1) ... [2024-10-24 23:33:49,706 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:33:49" (1/1) ... [2024-10-24 23:33:49,710 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:33:49" (1/1) ... [2024-10-24 23:33:49,715 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 23:33:49,717 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 23:33:49,717 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 23:33:49,717 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 23:33:49,718 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:33:49" (1/1) ... [2024-10-24 23:33:49,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 23:33:49,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:33:49,751 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 23:33:49,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 23:33:49,801 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2024-10-24 23:33:49,801 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2024-10-24 23:33:49,802 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-24 23:33:49,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 23:33:49,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 23:33:49,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 23:33:49,802 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-24 23:33:49,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 23:33:49,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 23:33:49,805 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 23:33:49,930 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 23:33:49,932 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 23:33:50,125 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 23:33:50,125 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 23:33:50,281 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 23:33:50,282 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-24 23:33:50,282 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:33:50 BoogieIcfgContainer [2024-10-24 23:33:50,283 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 23:33:50,285 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 23:33:50,285 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 23:33:50,290 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 23:33:50,290 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:33:49" (1/3) ... [2024-10-24 23:33:50,291 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a767120 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:33:50, skipping insertion in model container [2024-10-24 23:33:50,291 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:33:49" (2/3) ... [2024-10-24 23:33:50,292 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a767120 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:33:50, skipping insertion in model container [2024-10-24 23:33:50,293 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:33:50" (3/3) ... [2024-10-24 23:33:50,295 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_69-refine-protected-loop-interval_true.i [2024-10-24 23:33:50,311 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 23:33:50,312 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-10-24 23:33:50,313 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 23:33:50,350 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-24 23:33:50,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 38 transitions, 80 flow [2024-10-24 23:33:50,407 INFO L124 PetriNetUnfolderBase]: 5/37 cut-off events. [2024-10-24 23:33:50,408 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 23:33:50,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 37 events. 5/37 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 80 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 35. Up to 2 conditions per place. [2024-10-24 23:33:50,414 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 38 transitions, 80 flow [2024-10-24 23:33:50,417 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 37 transitions, 77 flow [2024-10-24 23:33:50,431 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 23:33:50,437 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;@2ebee6a3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 23:33:50,438 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-10-24 23:33:50,446 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 23:33:50,446 INFO L124 PetriNetUnfolderBase]: 1/17 cut-off events. [2024-10-24 23:33:50,446 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 23:33:50,446 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:33:50,447 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:33:50,448 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-10-24 23:33:50,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:33:50,453 INFO L85 PathProgramCache]: Analyzing trace with hash -178405112, now seen corresponding path program 1 times [2024-10-24 23:33:50,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:33:50,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533613944] [2024-10-24 23:33:50,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:50,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:33:50,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:50,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:33:50,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:33:50,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533613944] [2024-10-24 23:33:50,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533613944] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:33:50,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:33:50,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:33:50,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943941011] [2024-10-24 23:33:50,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:33:50,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:33:50,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:33:50,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:33:50,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:33:50,916 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 38 [2024-10-24 23:33:50,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 37 transitions, 77 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:50,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:33:50,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 38 [2024-10-24 23:33:50,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:33:51,144 INFO L124 PetriNetUnfolderBase]: 184/403 cut-off events. [2024-10-24 23:33:51,144 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 23:33:51,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 738 conditions, 403 events. 184/403 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1793 event pairs, 14 based on Foata normal form. 4/335 useless extension candidates. Maximal degree in co-relation 729. Up to 222 conditions per place. [2024-10-24 23:33:51,151 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 44 selfloop transitions, 8 changer transitions 1/66 dead transitions. [2024-10-24 23:33:51,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 66 transitions, 241 flow [2024-10-24 23:33:51,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 23:33:51,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 23:33:51,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 132 transitions. [2024-10-24 23:33:51,164 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6947368421052632 [2024-10-24 23:33:51,166 INFO L175 Difference]: Start difference. First operand has 36 places, 37 transitions, 77 flow. Second operand 5 states and 132 transitions. [2024-10-24 23:33:51,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 66 transitions, 241 flow [2024-10-24 23:33:51,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 66 transitions, 240 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:33:51,174 INFO L231 Difference]: Finished difference. Result has 42 places, 43 transitions, 142 flow [2024-10-24 23:33:51,177 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=142, PETRI_PLACES=42, PETRI_TRANSITIONS=43} [2024-10-24 23:33:51,180 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 6 predicate places. [2024-10-24 23:33:51,180 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 43 transitions, 142 flow [2024-10-24 23:33:51,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:51,181 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:33:51,181 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:33:51,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 23:33:51,182 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-10-24 23:33:51,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:33:51,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1615907721, now seen corresponding path program 1 times [2024-10-24 23:33:51,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:33:51,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389174718] [2024-10-24 23:33:51,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:51,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:33:51,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:51,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:33:51,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:33:51,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389174718] [2024-10-24 23:33:51,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389174718] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:33:51,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:33:51,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:33:51,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900038921] [2024-10-24 23:33:51,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:33:51,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:33:51,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:33:51,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:33:51,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:33:51,333 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-10-24 23:33:51,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 43 transitions, 142 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 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) [2024-10-24 23:33:51,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:33:51,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-10-24 23:33:51,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:33:51,486 INFO L124 PetriNetUnfolderBase]: 212/481 cut-off events. [2024-10-24 23:33:51,486 INFO L125 PetriNetUnfolderBase]: For 248/250 co-relation queries the response was YES. [2024-10-24 23:33:51,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1148 conditions, 481 events. 212/481 cut-off events. For 248/250 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2223 event pairs, 43 based on Foata normal form. 11/463 useless extension candidates. Maximal degree in co-relation 1134. Up to 285 conditions per place. [2024-10-24 23:33:51,494 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 53 selfloop transitions, 4 changer transitions 1/72 dead transitions. [2024-10-24 23:33:51,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 72 transitions, 356 flow [2024-10-24 23:33:51,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:33:51,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:33:51,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2024-10-24 23:33:51,498 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7236842105263158 [2024-10-24 23:33:51,499 INFO L175 Difference]: Start difference. First operand has 42 places, 43 transitions, 142 flow. Second operand 4 states and 110 transitions. [2024-10-24 23:33:51,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 72 transitions, 356 flow [2024-10-24 23:33:51,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 72 transitions, 356 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 23:33:51,504 INFO L231 Difference]: Finished difference. Result has 47 places, 46 transitions, 182 flow [2024-10-24 23:33:51,505 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=182, PETRI_PLACES=47, PETRI_TRANSITIONS=46} [2024-10-24 23:33:51,506 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 11 predicate places. [2024-10-24 23:33:51,507 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 46 transitions, 182 flow [2024-10-24 23:33:51,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 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) [2024-10-24 23:33:51,507 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:33:51,507 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:33:51,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 23:33:51,508 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-10-24 23:33:51,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:33:51,508 INFO L85 PathProgramCache]: Analyzing trace with hash 567489290, now seen corresponding path program 1 times [2024-10-24 23:33:51,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:33:51,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6518757] [2024-10-24 23:33:51,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:51,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:33:51,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:51,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:33:51,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:33:51,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6518757] [2024-10-24 23:33:51,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6518757] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:33:51,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:33:51,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:33:51,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445331138] [2024-10-24 23:33:51,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:33:51,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 23:33:51,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:33:51,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 23:33:51,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 23:33:51,628 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 38 [2024-10-24 23:33:51,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 46 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:51,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:33:51,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 38 [2024-10-24 23:33:51,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:33:51,721 INFO L124 PetriNetUnfolderBase]: 96/281 cut-off events. [2024-10-24 23:33:51,722 INFO L125 PetriNetUnfolderBase]: For 211/219 co-relation queries the response was YES. [2024-10-24 23:33:51,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 679 conditions, 281 events. 96/281 cut-off events. For 211/219 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1201 event pairs, 27 based on Foata normal form. 11/283 useless extension candidates. Maximal degree in co-relation 662. Up to 110 conditions per place. [2024-10-24 23:33:51,725 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 28 selfloop transitions, 5 changer transitions 3/52 dead transitions. [2024-10-24 23:33:51,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 52 transitions, 272 flow [2024-10-24 23:33:51,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 23:33:51,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 23:33:51,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-10-24 23:33:51,728 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7017543859649122 [2024-10-24 23:33:51,728 INFO L175 Difference]: Start difference. First operand has 47 places, 46 transitions, 182 flow. Second operand 3 states and 80 transitions. [2024-10-24 23:33:51,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 52 transitions, 272 flow [2024-10-24 23:33:51,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 52 transitions, 263 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 23:33:51,733 INFO L231 Difference]: Finished difference. Result has 47 places, 41 transitions, 150 flow [2024-10-24 23:33:51,733 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=47, PETRI_TRANSITIONS=41} [2024-10-24 23:33:51,734 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 11 predicate places. [2024-10-24 23:33:51,734 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 41 transitions, 150 flow [2024-10-24 23:33:51,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:51,735 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:33:51,735 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:33:51,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 23:33:51,736 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-10-24 23:33:51,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:33:51,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1190566207, now seen corresponding path program 1 times [2024-10-24 23:33:51,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:33:51,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447953851] [2024-10-24 23:33:51,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:51,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:33:51,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:51,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:33:51,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:33:51,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447953851] [2024-10-24 23:33:51,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447953851] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:33:51,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:33:51,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:33:51,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613582207] [2024-10-24 23:33:51,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:33:51,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:33:51,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:33:51,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:33:51,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:33:51,822 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-10-24 23:33:51,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 150 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:51,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:33:51,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-10-24 23:33:51,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:33:51,960 INFO L124 PetriNetUnfolderBase]: 131/354 cut-off events. [2024-10-24 23:33:51,961 INFO L125 PetriNetUnfolderBase]: For 232/245 co-relation queries the response was YES. [2024-10-24 23:33:51,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 898 conditions, 354 events. 131/354 cut-off events. For 232/245 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1451 event pairs, 46 based on Foata normal form. 12/350 useless extension candidates. Maximal degree in co-relation 881. Up to 153 conditions per place. [2024-10-24 23:33:51,963 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 42 selfloop transitions, 5 changer transitions 0/58 dead transitions. [2024-10-24 23:33:51,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 58 transitions, 326 flow [2024-10-24 23:33:51,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:33:51,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:33:51,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 93 transitions. [2024-10-24 23:33:51,966 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6118421052631579 [2024-10-24 23:33:51,966 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 150 flow. Second operand 4 states and 93 transitions. [2024-10-24 23:33:51,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 58 transitions, 326 flow [2024-10-24 23:33:51,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 58 transitions, 319 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:33:51,971 INFO L231 Difference]: Finished difference. Result has 48 places, 40 transitions, 176 flow [2024-10-24 23:33:51,972 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=176, PETRI_PLACES=48, PETRI_TRANSITIONS=40} [2024-10-24 23:33:51,973 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 12 predicate places. [2024-10-24 23:33:51,973 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 40 transitions, 176 flow [2024-10-24 23:33:51,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:51,974 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:33:51,974 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:33:51,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 23:33:51,974 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting workerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-10-24 23:33:51,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:33:51,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1747153623, now seen corresponding path program 1 times [2024-10-24 23:33:51,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:33:51,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108864932] [2024-10-24 23:33:51,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:51,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:33:52,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:52,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:33:52,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:33:52,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108864932] [2024-10-24 23:33:52,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108864932] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:33:52,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:33:52,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 23:33:52,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714021937] [2024-10-24 23:33:52,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:33:52,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 23:33:52,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:33:52,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 23:33:52,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 23:33:52,171 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-10-24 23:33:52,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 40 transitions, 176 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:52,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:33:52,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-10-24 23:33:52,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:33:52,351 INFO L124 PetriNetUnfolderBase]: 176/442 cut-off events. [2024-10-24 23:33:52,352 INFO L125 PetriNetUnfolderBase]: For 493/505 co-relation queries the response was YES. [2024-10-24 23:33:52,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1188 conditions, 442 events. 176/442 cut-off events. For 493/505 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1724 event pairs, 36 based on Foata normal form. 9/451 useless extension candidates. Maximal degree in co-relation 1169. Up to 217 conditions per place. [2024-10-24 23:33:52,355 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 49 selfloop transitions, 11 changer transitions 7/76 dead transitions. [2024-10-24 23:33:52,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 76 transitions, 457 flow [2024-10-24 23:33:52,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 23:33:52,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-24 23:33:52,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-10-24 23:33:52,358 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.506578947368421 [2024-10-24 23:33:52,358 INFO L175 Difference]: Start difference. First operand has 48 places, 40 transitions, 176 flow. Second operand 8 states and 154 transitions. [2024-10-24 23:33:52,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 76 transitions, 457 flow [2024-10-24 23:33:52,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 76 transitions, 451 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:33:52,362 INFO L231 Difference]: Finished difference. Result has 57 places, 46 transitions, 249 flow [2024-10-24 23:33:52,362 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=249, PETRI_PLACES=57, PETRI_TRANSITIONS=46} [2024-10-24 23:33:52,363 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 21 predicate places. [2024-10-24 23:33:52,363 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 46 transitions, 249 flow [2024-10-24 23:33:52,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:52,364 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:33:52,364 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:33:52,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 23:33:52,364 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-10-24 23:33:52,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:33:52,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1753422616, now seen corresponding path program 1 times [2024-10-24 23:33:52,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:33:52,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347901295] [2024-10-24 23:33:52,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:52,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:33:52,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:52,442 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:33:52,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:33:52,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347901295] [2024-10-24 23:33:52,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347901295] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:33:52,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071409685] [2024-10-24 23:33:52,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:52,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:33:52,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:33:52,446 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) [2024-10-24 23:33:52,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 23:33:52,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:52,519 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 23:33:52,523 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:33:52,610 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:33:52,610 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 23:33:52,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071409685] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:33:52,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 23:33:52,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-24 23:33:52,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014491889] [2024-10-24 23:33:52,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:33:52,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 23:33:52,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:33:52,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 23:33:52,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-24 23:33:52,625 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-10-24 23:33:52,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 46 transitions, 249 flow. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:52,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:33:52,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-10-24 23:33:52,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:33:52,820 INFO L124 PetriNetUnfolderBase]: 210/557 cut-off events. [2024-10-24 23:33:52,820 INFO L125 PetriNetUnfolderBase]: For 912/919 co-relation queries the response was YES. [2024-10-24 23:33:52,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1570 conditions, 557 events. 210/557 cut-off events. For 912/919 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2319 event pairs, 49 based on Foata normal form. 15/572 useless extension candidates. Maximal degree in co-relation 1546. Up to 180 conditions per place. [2024-10-24 23:33:52,824 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 63 selfloop transitions, 21 changer transitions 3/97 dead transitions. [2024-10-24 23:33:52,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 97 transitions, 663 flow [2024-10-24 23:33:52,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 23:33:52,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-24 23:33:52,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 210 transitions. [2024-10-24 23:33:52,826 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5526315789473685 [2024-10-24 23:33:52,826 INFO L175 Difference]: Start difference. First operand has 57 places, 46 transitions, 249 flow. Second operand 10 states and 210 transitions. [2024-10-24 23:33:52,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 97 transitions, 663 flow [2024-10-24 23:33:52,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 97 transitions, 649 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-10-24 23:33:52,831 INFO L231 Difference]: Finished difference. Result has 69 places, 58 transitions, 424 flow [2024-10-24 23:33:52,831 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=424, PETRI_PLACES=69, PETRI_TRANSITIONS=58} [2024-10-24 23:33:52,831 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 33 predicate places. [2024-10-24 23:33:52,832 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 58 transitions, 424 flow [2024-10-24 23:33:52,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:52,832 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:33:52,832 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:33:52,850 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 23:33:53,033 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,SelfDestructingSolverStorable5 [2024-10-24 23:33:53,033 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-10-24 23:33:53,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:33:53,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1478474113, now seen corresponding path program 1 times [2024-10-24 23:33:53,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:33:53,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712009131] [2024-10-24 23:33:53,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:53,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:33:53,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:53,075 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 23:33:53,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:33:53,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712009131] [2024-10-24 23:33:53,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712009131] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:33:53,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:33:53,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:33:53,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762833627] [2024-10-24 23:33:53,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:33:53,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 23:33:53,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:33:53,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 23:33:53,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 23:33:53,083 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-10-24 23:33:53,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 58 transitions, 424 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:53,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:33:53,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-10-24 23:33:53,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:33:53,180 INFO L124 PetriNetUnfolderBase]: 205/546 cut-off events. [2024-10-24 23:33:53,180 INFO L125 PetriNetUnfolderBase]: For 1801/1810 co-relation queries the response was YES. [2024-10-24 23:33:53,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1780 conditions, 546 events. 205/546 cut-off events. For 1801/1810 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2213 event pairs, 82 based on Foata normal form. 16/558 useless extension candidates. Maximal degree in co-relation 1749. Up to 310 conditions per place. [2024-10-24 23:33:53,184 INFO L140 encePairwiseOnDemand]: 35/38 looper letters, 45 selfloop transitions, 10 changer transitions 0/68 dead transitions. [2024-10-24 23:33:53,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 68 transitions, 609 flow [2024-10-24 23:33:53,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 23:33:53,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 23:33:53,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 76 transitions. [2024-10-24 23:33:53,185 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-10-24 23:33:53,185 INFO L175 Difference]: Start difference. First operand has 69 places, 58 transitions, 424 flow. Second operand 3 states and 76 transitions. [2024-10-24 23:33:53,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 68 transitions, 609 flow [2024-10-24 23:33:53,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 68 transitions, 584 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-10-24 23:33:53,193 INFO L231 Difference]: Finished difference. Result has 69 places, 57 transitions, 430 flow [2024-10-24 23:33:53,193 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=430, PETRI_PLACES=69, PETRI_TRANSITIONS=57} [2024-10-24 23:33:53,194 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 33 predicate places. [2024-10-24 23:33:53,194 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 57 transitions, 430 flow [2024-10-24 23:33:53,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:53,194 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:33:53,195 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-24 23:33:53,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 23:33:53,195 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-10-24 23:33:53,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:33:53,196 INFO L85 PathProgramCache]: Analyzing trace with hash 333015127, now seen corresponding path program 1 times [2024-10-24 23:33:53,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:33:53,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062143509] [2024-10-24 23:33:53,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:53,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:33:53,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:53,296 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:33:53,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:33:53,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062143509] [2024-10-24 23:33:53,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062143509] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:33:53,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450906005] [2024-10-24 23:33:53,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:53,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:33:53,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:33:53,299 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) [2024-10-24 23:33:53,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 23:33:53,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:53,375 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 23:33:53,376 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:33:53,423 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:33:53,424 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 23:33:53,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450906005] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:33:53,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 23:33:53,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-10-24 23:33:53,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628043804] [2024-10-24 23:33:53,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:33:53,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 23:33:53,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:33:53,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 23:33:53,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-24 23:33:53,435 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-10-24 23:33:53,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 57 transitions, 430 flow. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:53,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:33:53,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-10-24 23:33:53,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:33:53,623 INFO L124 PetriNetUnfolderBase]: 221/556 cut-off events. [2024-10-24 23:33:53,624 INFO L125 PetriNetUnfolderBase]: For 2070/2070 co-relation queries the response was YES. [2024-10-24 23:33:53,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1909 conditions, 556 events. 221/556 cut-off events. For 2070/2070 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2219 event pairs, 17 based on Foata normal form. 18/556 useless extension candidates. Maximal degree in co-relation 1877. Up to 237 conditions per place. [2024-10-24 23:33:53,631 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 68 selfloop transitions, 12 changer transitions 5/97 dead transitions. [2024-10-24 23:33:53,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 97 transitions, 878 flow [2024-10-24 23:33:53,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 23:33:53,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 23:33:53,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2024-10-24 23:33:53,633 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6535087719298246 [2024-10-24 23:33:53,633 INFO L175 Difference]: Start difference. First operand has 69 places, 57 transitions, 430 flow. Second operand 6 states and 149 transitions. [2024-10-24 23:33:53,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 97 transitions, 878 flow [2024-10-24 23:33:53,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 97 transitions, 864 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-10-24 23:33:53,639 INFO L231 Difference]: Finished difference. Result has 72 places, 56 transitions, 436 flow [2024-10-24 23:33:53,640 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=436, PETRI_PLACES=72, PETRI_TRANSITIONS=56} [2024-10-24 23:33:53,640 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 36 predicate places. [2024-10-24 23:33:53,640 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 56 transitions, 436 flow [2024-10-24 23:33:53,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:53,641 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:33:53,641 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-10-24 23:33:53,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-24 23:33:53,841 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,SelfDestructingSolverStorable7 [2024-10-24 23:33:53,842 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-10-24 23:33:53,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:33:53,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1733534688, now seen corresponding path program 1 times [2024-10-24 23:33:53,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:33:53,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87605174] [2024-10-24 23:33:53,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:53,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:33:53,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:53,910 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:33:53,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:33:53,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87605174] [2024-10-24 23:33:53,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87605174] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:33:53,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167021361] [2024-10-24 23:33:53,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:53,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:33:53,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:33:53,913 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) [2024-10-24 23:33:53,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 23:33:53,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:53,987 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 23:33:53,988 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:33:54,032 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:33:54,032 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:33:54,103 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:33:54,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167021361] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:33:54,103 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:33:54,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-24 23:33:54,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490494411] [2024-10-24 23:33:54,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:33:54,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 23:33:54,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:33:54,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 23:33:54,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-24 23:33:54,115 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-10-24 23:33:54,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 56 transitions, 436 flow. Second operand has 12 states, 12 states have (on average 18.333333333333332) internal successors, (220), 12 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:54,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:33:54,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-10-24 23:33:54,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:33:54,463 INFO L124 PetriNetUnfolderBase]: 476/1163 cut-off events. [2024-10-24 23:33:54,464 INFO L125 PetriNetUnfolderBase]: For 4991/4991 co-relation queries the response was YES. [2024-10-24 23:33:54,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4207 conditions, 1163 events. 476/1163 cut-off events. For 4991/4991 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 5727 event pairs, 47 based on Foata normal form. 45/1208 useless extension candidates. Maximal degree in co-relation 4175. Up to 374 conditions per place. [2024-10-24 23:33:54,472 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 131 selfloop transitions, 21 changer transitions 22/186 dead transitions. [2024-10-24 23:33:54,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 186 transitions, 1773 flow [2024-10-24 23:33:54,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 23:33:54,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-24 23:33:54,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 267 transitions. [2024-10-24 23:33:54,474 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7026315789473684 [2024-10-24 23:33:54,474 INFO L175 Difference]: Start difference. First operand has 72 places, 56 transitions, 436 flow. Second operand 10 states and 267 transitions. [2024-10-24 23:33:54,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 186 transitions, 1773 flow [2024-10-24 23:33:54,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 186 transitions, 1748 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-10-24 23:33:54,488 INFO L231 Difference]: Finished difference. Result has 83 places, 72 transitions, 678 flow [2024-10-24 23:33:54,489 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=678, PETRI_PLACES=83, PETRI_TRANSITIONS=72} [2024-10-24 23:33:54,489 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 47 predicate places. [2024-10-24 23:33:54,489 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 72 transitions, 678 flow [2024-10-24 23:33:54,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 18.333333333333332) internal successors, (220), 12 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:54,490 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:33:54,490 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:33:54,513 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-24 23:33:54,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:33:54,695 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-10-24 23:33:54,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:33:54,695 INFO L85 PathProgramCache]: Analyzing trace with hash 2043242043, now seen corresponding path program 1 times [2024-10-24 23:33:54,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:33:54,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716158208] [2024-10-24 23:33:54,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:54,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:33:54,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:54,767 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:33:54,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:33:54,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716158208] [2024-10-24 23:33:54,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716158208] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:33:54,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:33:54,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 23:33:54,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688255095] [2024-10-24 23:33:54,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:33:54,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 23:33:54,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:33:54,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 23:33:54,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 23:33:54,789 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-10-24 23:33:54,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 72 transitions, 678 flow. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 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) [2024-10-24 23:33:54,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:33:54,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-10-24 23:33:54,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:33:55,036 INFO L124 PetriNetUnfolderBase]: 560/1342 cut-off events. [2024-10-24 23:33:55,037 INFO L125 PetriNetUnfolderBase]: For 8717/8724 co-relation queries the response was YES. [2024-10-24 23:33:55,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5332 conditions, 1342 events. 560/1342 cut-off events. For 8717/8724 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 6867 event pairs, 51 based on Foata normal form. 36/1373 useless extension candidates. Maximal degree in co-relation 5295. Up to 461 conditions per place. [2024-10-24 23:33:55,048 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 74 selfloop transitions, 50 changer transitions 0/132 dead transitions. [2024-10-24 23:33:55,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 132 transitions, 1522 flow [2024-10-24 23:33:55,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 23:33:55,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-24 23:33:55,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-10-24 23:33:55,049 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48026315789473684 [2024-10-24 23:33:55,049 INFO L175 Difference]: Start difference. First operand has 83 places, 72 transitions, 678 flow. Second operand 8 states and 146 transitions. [2024-10-24 23:33:55,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 132 transitions, 1522 flow [2024-10-24 23:33:55,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 132 transitions, 1494 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-10-24 23:33:55,064 INFO L231 Difference]: Finished difference. Result has 91 places, 91 transitions, 1143 flow [2024-10-24 23:33:55,065 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=658, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1143, PETRI_PLACES=91, PETRI_TRANSITIONS=91} [2024-10-24 23:33:55,066 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 55 predicate places. [2024-10-24 23:33:55,067 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 91 transitions, 1143 flow [2024-10-24 23:33:55,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 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) [2024-10-24 23:33:55,067 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:33:55,067 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:33:55,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 23:33:55,067 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting workerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-10-24 23:33:55,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:33:55,068 INFO L85 PathProgramCache]: Analyzing trace with hash 782469495, now seen corresponding path program 1 times [2024-10-24 23:33:55,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:33:55,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695029522] [2024-10-24 23:33:55,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:55,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:33:55,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:55,171 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:33:55,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:33:55,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695029522] [2024-10-24 23:33:55,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695029522] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:33:55,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135072127] [2024-10-24 23:33:55,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:55,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:33:55,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:33:55,174 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) [2024-10-24 23:33:55,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 23:33:55,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:55,248 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 23:33:55,249 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:33:55,322 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:33:55,322 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:33:55,368 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:33:55,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135072127] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:33:55,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:33:55,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-10-24 23:33:55,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521489471] [2024-10-24 23:33:55,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:33:55,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 23:33:55,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:33:55,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 23:33:55,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-10-24 23:33:55,406 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-10-24 23:33:55,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 91 transitions, 1143 flow. Second operand has 12 states, 12 states have (on average 14.333333333333334) internal successors, (172), 12 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:55,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:33:55,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-10-24 23:33:55,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:33:55,936 INFO L124 PetriNetUnfolderBase]: 667/1657 cut-off events. [2024-10-24 23:33:55,936 INFO L125 PetriNetUnfolderBase]: For 15803/15810 co-relation queries the response was YES. [2024-10-24 23:33:55,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7256 conditions, 1657 events. 667/1657 cut-off events. For 15803/15810 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 8217 event pairs, 78 based on Foata normal form. 68/1720 useless extension candidates. Maximal degree in co-relation 7213. Up to 430 conditions per place. [2024-10-24 23:33:55,951 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 104 selfloop transitions, 87 changer transitions 31/230 dead transitions. [2024-10-24 23:33:55,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 230 transitions, 3012 flow [2024-10-24 23:33:55,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-24 23:33:55,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-24 23:33:55,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 352 transitions. [2024-10-24 23:33:55,953 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44110275689223055 [2024-10-24 23:33:55,954 INFO L175 Difference]: Start difference. First operand has 91 places, 91 transitions, 1143 flow. Second operand 21 states and 352 transitions. [2024-10-24 23:33:55,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 230 transitions, 3012 flow [2024-10-24 23:33:55,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 230 transitions, 2813 flow, removed 65 selfloop flow, removed 4 redundant places. [2024-10-24 23:33:55,978 INFO L231 Difference]: Finished difference. Result has 110 places, 126 transitions, 1855 flow [2024-10-24 23:33:55,979 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1032, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1855, PETRI_PLACES=110, PETRI_TRANSITIONS=126} [2024-10-24 23:33:55,979 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 74 predicate places. [2024-10-24 23:33:55,980 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 126 transitions, 1855 flow [2024-10-24 23:33:55,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.333333333333334) internal successors, (172), 12 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:55,980 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:33:55,980 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 2, 1, 1, 1, 1] [2024-10-24 23:33:55,999 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-24 23:33:56,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:33:56,182 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-10-24 23:33:56,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:33:56,182 INFO L85 PathProgramCache]: Analyzing trace with hash -791151918, now seen corresponding path program 1 times [2024-10-24 23:33:56,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:33:56,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704023501] [2024-10-24 23:33:56,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:56,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:33:56,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:56,359 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 40 proven. 42 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 23:33:56,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:33:56,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704023501] [2024-10-24 23:33:56,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704023501] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:33:56,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636258795] [2024-10-24 23:33:56,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:56,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:33:56,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:33:56,363 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) [2024-10-24 23:33:56,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-24 23:33:56,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:56,458 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-24 23:33:56,460 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:33:56,535 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 40 proven. 42 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 23:33:56,535 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:33:56,652 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 40 proven. 42 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 23:33:56,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636258795] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:33:56,652 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:33:56,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-10-24 23:33:56,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688853668] [2024-10-24 23:33:56,653 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:33:56,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-24 23:33:56,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:33:56,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-24 23:33:56,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-10-24 23:33:56,674 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-10-24 23:33:56,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 126 transitions, 1855 flow. Second operand has 18 states, 18 states have (on average 16.72222222222222) internal successors, (301), 18 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:56,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:33:56,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-10-24 23:33:56,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:33:57,311 INFO L124 PetriNetUnfolderBase]: 660/1764 cut-off events. [2024-10-24 23:33:57,311 INFO L125 PetriNetUnfolderBase]: For 17688/17695 co-relation queries the response was YES. [2024-10-24 23:33:57,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8242 conditions, 1764 events. 660/1764 cut-off events. For 17688/17695 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 9282 event pairs, 230 based on Foata normal form. 8/1771 useless extension candidates. Maximal degree in co-relation 8196. Up to 931 conditions per place. [2024-10-24 23:33:57,327 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 205 selfloop transitions, 75 changer transitions 10/298 dead transitions. [2024-10-24 23:33:57,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 298 transitions, 3923 flow [2024-10-24 23:33:57,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-10-24 23:33:57,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-10-24 23:33:57,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 601 transitions. [2024-10-24 23:33:57,330 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5101867572156197 [2024-10-24 23:33:57,330 INFO L175 Difference]: Start difference. First operand has 110 places, 126 transitions, 1855 flow. Second operand 31 states and 601 transitions. [2024-10-24 23:33:57,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 298 transitions, 3923 flow [2024-10-24 23:33:57,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 298 transitions, 3594 flow, removed 96 selfloop flow, removed 8 redundant places. [2024-10-24 23:33:57,367 INFO L231 Difference]: Finished difference. Result has 142 places, 165 transitions, 2452 flow [2024-10-24 23:33:57,367 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1647, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2452, PETRI_PLACES=142, PETRI_TRANSITIONS=165} [2024-10-24 23:33:57,368 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 106 predicate places. [2024-10-24 23:33:57,370 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 165 transitions, 2452 flow [2024-10-24 23:33:57,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 16.72222222222222) internal successors, (301), 18 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:57,370 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:33:57,370 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1] [2024-10-24 23:33:57,394 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-24 23:33:57,574 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,SelfDestructingSolverStorable11 [2024-10-24 23:33:57,575 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-10-24 23:33:57,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:33:57,575 INFO L85 PathProgramCache]: Analyzing trace with hash 85625920, now seen corresponding path program 2 times [2024-10-24 23:33:57,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:33:57,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533965893] [2024-10-24 23:33:57,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:57,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:33:57,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:57,771 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:33:57,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:33:57,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533965893] [2024-10-24 23:33:57,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533965893] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:33:57,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381584759] [2024-10-24 23:33:57,771 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 23:33:57,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:33:57,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:33:57,773 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) [2024-10-24 23:33:57,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-24 23:33:57,860 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 23:33:57,861 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 23:33:57,862 INFO L255 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-24 23:33:57,864 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:33:57,947 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:33:57,947 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:33:58,129 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:33:58,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381584759] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:33:58,130 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:33:58,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2024-10-24 23:33:58,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590306115] [2024-10-24 23:33:58,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:33:58,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-24 23:33:58,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:33:58,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-24 23:33:58,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2024-10-24 23:33:58,158 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-10-24 23:33:58,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 165 transitions, 2452 flow. Second operand has 24 states, 24 states have (on average 18.416666666666668) internal successors, (442), 24 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:58,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:33:58,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-10-24 23:33:58,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:33:59,589 INFO L124 PetriNetUnfolderBase]: 1837/4646 cut-off events. [2024-10-24 23:33:59,589 INFO L125 PetriNetUnfolderBase]: For 46394/46394 co-relation queries the response was YES. [2024-10-24 23:33:59,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20986 conditions, 4646 events. 1837/4646 cut-off events. For 46394/46394 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 25462 event pairs, 101 based on Foata normal form. 215/4861 useless extension candidates. Maximal degree in co-relation 20930. Up to 661 conditions per place. [2024-10-24 23:33:59,640 INFO L140 encePairwiseOnDemand]: 34/38 looper letters, 531 selfloop transitions, 135 changer transitions 96/773 dead transitions. [2024-10-24 23:33:59,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 773 transitions, 11322 flow [2024-10-24 23:33:59,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-24 23:33:59,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-24 23:33:59,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 584 transitions. [2024-10-24 23:33:59,643 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6985645933014354 [2024-10-24 23:33:59,643 INFO L175 Difference]: Start difference. First operand has 142 places, 165 transitions, 2452 flow. Second operand 22 states and 584 transitions. [2024-10-24 23:33:59,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 773 transitions, 11322 flow [2024-10-24 23:33:59,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 773 transitions, 11077 flow, removed 73 selfloop flow, removed 4 redundant places. [2024-10-24 23:33:59,812 INFO L231 Difference]: Finished difference. Result has 169 places, 239 transitions, 4022 flow [2024-10-24 23:33:59,812 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2326, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=4022, PETRI_PLACES=169, PETRI_TRANSITIONS=239} [2024-10-24 23:33:59,813 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 133 predicate places. [2024-10-24 23:33:59,813 INFO L471 AbstractCegarLoop]: Abstraction has has 169 places, 239 transitions, 4022 flow [2024-10-24 23:33:59,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 18.416666666666668) internal successors, (442), 24 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:59,814 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:33:59,814 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 11, 10, 7, 7, 7, 4, 1, 1, 1, 1] [2024-10-24 23:33:59,832 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-24 23:34:00,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:34:00,015 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-10-24 23:34:00,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:34:00,016 INFO L85 PathProgramCache]: Analyzing trace with hash 412335652, now seen corresponding path program 2 times [2024-10-24 23:34:00,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:34:00,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145764515] [2024-10-24 23:34:00,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:34:00,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:34:00,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:34:00,391 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 208 proven. 238 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-24 23:34:00,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:34:00,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145764515] [2024-10-24 23:34:00,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145764515] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:34:00,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20388738] [2024-10-24 23:34:00,392 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 23:34:00,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:34:00,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:34:00,394 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) [2024-10-24 23:34:00,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-24 23:34:00,511 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 23:34:00,512 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 23:34:00,513 INFO L255 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-24 23:34:00,516 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:34:00,657 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 40 proven. 394 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-10-24 23:34:00,657 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:34:01,082 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 40 proven. 394 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-10-24 23:34:01,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20388738] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:34:01,083 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:34:01,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2024-10-24 23:34:01,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931117195] [2024-10-24 23:34:01,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:34:01,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-10-24 23:34:01,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:34:01,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-10-24 23:34:01,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2024-10-24 23:34:01,128 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-10-24 23:34:01,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 239 transitions, 4022 flow. Second operand has 34 states, 34 states have (on average 16.676470588235293) internal successors, (567), 34 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:34:01,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:34:01,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-10-24 23:34:01,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:34:02,986 INFO L124 PetriNetUnfolderBase]: 1978/5172 cut-off events. [2024-10-24 23:34:02,986 INFO L125 PetriNetUnfolderBase]: For 61633/61634 co-relation queries the response was YES. [2024-10-24 23:34:03,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25135 conditions, 5172 events. 1978/5172 cut-off events. For 61633/61634 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 29682 event pairs, 834 based on Foata normal form. 16/5188 useless extension candidates. Maximal degree in co-relation 25069. Up to 2980 conditions per place. [2024-10-24 23:34:03,028 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 445 selfloop transitions, 151 changer transitions 26/630 dead transitions. [2024-10-24 23:34:03,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 630 transitions, 8937 flow [2024-10-24 23:34:03,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-10-24 23:34:03,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2024-10-24 23:34:03,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 1291 transitions. [2024-10-24 23:34:03,032 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.507069913589945 [2024-10-24 23:34:03,032 INFO L175 Difference]: Start difference. First operand has 169 places, 239 transitions, 4022 flow. Second operand 67 states and 1291 transitions. [2024-10-24 23:34:03,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 630 transitions, 8937 flow [2024-10-24 23:34:03,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 630 transitions, 8538 flow, removed 139 selfloop flow, removed 9 redundant places. [2024-10-24 23:34:03,176 INFO L231 Difference]: Finished difference. Result has 244 places, 319 transitions, 5697 flow [2024-10-24 23:34:03,178 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3753, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=67, PETRI_FLOW=5697, PETRI_PLACES=244, PETRI_TRANSITIONS=319} [2024-10-24 23:34:03,179 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 208 predicate places. [2024-10-24 23:34:03,179 INFO L471 AbstractCegarLoop]: Abstraction has has 244 places, 319 transitions, 5697 flow [2024-10-24 23:34:03,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 16.676470588235293) internal successors, (567), 34 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:34:03,180 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:34:03,180 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 11, 10, 8, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:34:03,198 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-24 23:34:03,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:34:03,385 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-10-24 23:34:03,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:34:03,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1698525685, now seen corresponding path program 1 times [2024-10-24 23:34:03,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:34:03,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067940217] [2024-10-24 23:34:03,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:34:03,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:34:03,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:34:03,655 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 208 proven. 37 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2024-10-24 23:34:03,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:34:03,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067940217] [2024-10-24 23:34:03,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067940217] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:34:03,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694807736] [2024-10-24 23:34:03,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:34:03,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:34:03,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:34:03,658 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) [2024-10-24 23:34:03,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-24 23:34:03,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:34:03,775 INFO L255 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-24 23:34:03,777 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:34:03,834 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 208 proven. 32 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2024-10-24 23:34:03,834 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:34:03,925 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 208 proven. 32 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2024-10-24 23:34:03,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694807736] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:34:03,926 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:34:03,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 15 [2024-10-24 23:34:03,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081825581] [2024-10-24 23:34:03,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:34:03,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-24 23:34:03,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:34:03,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-24 23:34:03,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2024-10-24 23:34:03,964 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-10-24 23:34:03,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 319 transitions, 5697 flow. Second operand has 16 states, 16 states have (on average 15.125) internal successors, (242), 16 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:34:03,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:34:03,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-10-24 23:34:03,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:34:06,069 INFO L124 PetriNetUnfolderBase]: 3266/8681 cut-off events. [2024-10-24 23:34:06,070 INFO L125 PetriNetUnfolderBase]: For 107919/107936 co-relation queries the response was YES. [2024-10-24 23:34:06,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41469 conditions, 8681 events. 3266/8681 cut-off events. For 107919/107936 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 56884 event pairs, 611 based on Foata normal form. 132/8803 useless extension candidates. Maximal degree in co-relation 41382. Up to 2115 conditions per place. [2024-10-24 23:34:06,149 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 373 selfloop transitions, 331 changer transitions 18/730 dead transitions. [2024-10-24 23:34:06,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 730 transitions, 11847 flow [2024-10-24 23:34:06,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-10-24 23:34:06,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-10-24 23:34:06,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 614 transitions. [2024-10-24 23:34:06,258 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4366998577524893 [2024-10-24 23:34:06,259 INFO L175 Difference]: Start difference. First operand has 244 places, 319 transitions, 5697 flow. Second operand 37 states and 614 transitions. [2024-10-24 23:34:06,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 730 transitions, 11847 flow [2024-10-24 23:34:06,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 730 transitions, 11389 flow, removed 185 selfloop flow, removed 26 redundant places. [2024-10-24 23:34:06,610 INFO L231 Difference]: Finished difference. Result has 257 places, 503 transitions, 9272 flow [2024-10-24 23:34:06,610 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5045, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=9272, PETRI_PLACES=257, PETRI_TRANSITIONS=503} [2024-10-24 23:34:06,612 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 221 predicate places. [2024-10-24 23:34:06,612 INFO L471 AbstractCegarLoop]: Abstraction has has 257 places, 503 transitions, 9272 flow [2024-10-24 23:34:06,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 15.125) internal successors, (242), 16 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:34:06,613 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:34:06,613 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 11, 10, 7, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:34:06,631 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-24 23:34:06,813 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,SelfDestructingSolverStorable14 [2024-10-24 23:34:06,814 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-10-24 23:34:06,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:34:06,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1520693804, now seen corresponding path program 2 times [2024-10-24 23:34:06,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:34:06,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891743490] [2024-10-24 23:34:06,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:34:06,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:34:06,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:34:07,066 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 232 proven. 73 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2024-10-24 23:34:07,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:34:07,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891743490] [2024-10-24 23:34:07,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891743490] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:34:07,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93817587] [2024-10-24 23:34:07,067 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 23:34:07,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:34:07,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:34:07,070 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) [2024-10-24 23:34:07,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-24 23:34:07,196 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 23:34:07,197 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 23:34:07,201 INFO L255 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-24 23:34:07,204 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:34:07,335 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 70 proven. 193 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2024-10-24 23:34:07,335 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:34:07,549 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 70 proven. 193 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2024-10-24 23:34:07,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93817587] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:34:07,550 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:34:07,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2024-10-24 23:34:07,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741109592] [2024-10-24 23:34:07,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:34:07,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-24 23:34:07,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:34:07,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-24 23:34:07,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552 [2024-10-24 23:34:07,586 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-10-24 23:34:07,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 503 transitions, 9272 flow. Second operand has 24 states, 24 states have (on average 14.916666666666666) internal successors, (358), 24 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:34:07,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:34:07,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-10-24 23:34:07,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:34:12,008 INFO L124 PetriNetUnfolderBase]: 5416/14575 cut-off events. [2024-10-24 23:34:12,008 INFO L125 PetriNetUnfolderBase]: For 207982/208015 co-relation queries the response was YES. [2024-10-24 23:34:12,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73804 conditions, 14575 events. 5416/14575 cut-off events. For 207982/208015 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 110608 event pairs, 563 based on Foata normal form. 108/14683 useless extension candidates. Maximal degree in co-relation 73710. Up to 2053 conditions per place. [2024-10-24 23:34:12,175 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 306 selfloop transitions, 844 changer transitions 17/1175 dead transitions. [2024-10-24 23:34:12,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 1175 transitions, 21155 flow [2024-10-24 23:34:12,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-10-24 23:34:12,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2024-10-24 23:34:12,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 901 transitions. [2024-10-24 23:34:12,178 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4159741458910434 [2024-10-24 23:34:12,178 INFO L175 Difference]: Start difference. First operand has 257 places, 503 transitions, 9272 flow. Second operand 57 states and 901 transitions. [2024-10-24 23:34:12,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 1175 transitions, 21155 flow [2024-10-24 23:34:13,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 1175 transitions, 20756 flow, removed 114 selfloop flow, removed 8 redundant places. [2024-10-24 23:34:13,079 INFO L231 Difference]: Finished difference. Result has 309 places, 888 transitions, 18259 flow [2024-10-24 23:34:13,080 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8854, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=454, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=18259, PETRI_PLACES=309, PETRI_TRANSITIONS=888} [2024-10-24 23:34:13,080 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 273 predicate places. [2024-10-24 23:34:13,080 INFO L471 AbstractCegarLoop]: Abstraction has has 309 places, 888 transitions, 18259 flow [2024-10-24 23:34:13,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 14.916666666666666) internal successors, (358), 24 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:34:13,081 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:34:13,081 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 11, 10, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:34:13,094 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-24 23:34:13,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-24 23:34:13,281 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-10-24 23:34:13,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:34:13,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1551694118, now seen corresponding path program 3 times [2024-10-24 23:34:13,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:34:13,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065261948] [2024-10-24 23:34:13,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:34:13,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:34:13,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:34:13,583 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 232 proven. 169 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-10-24 23:34:13,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:34:13,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065261948] [2024-10-24 23:34:13,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065261948] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:34:13,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395311519] [2024-10-24 23:34:13,584 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-24 23:34:13,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:34:13,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:34:13,586 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) [2024-10-24 23:34:13,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-24 23:34:13,719 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-10-24 23:34:13,719 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 23:34:13,720 INFO L255 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-24 23:34:13,722 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:34:13,819 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 40 proven. 340 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-10-24 23:34:13,820 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:34:14,031 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 40 proven. 340 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-10-24 23:34:14,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395311519] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:34:14,031 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:34:14,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 27 [2024-10-24 23:34:14,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403516371] [2024-10-24 23:34:14,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:34:14,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-24 23:34:14,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:34:14,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-24 23:34:14,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=569, Unknown=0, NotChecked=0, Total=756 [2024-10-24 23:34:14,088 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-10-24 23:34:14,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 888 transitions, 18259 flow. Second operand has 28 states, 28 states have (on average 14.928571428571429) internal successors, (418), 28 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:34:14,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:34:14,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-10-24 23:34:14,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:34:21,009 INFO L124 PetriNetUnfolderBase]: 6695/17972 cut-off events. [2024-10-24 23:34:21,009 INFO L125 PetriNetUnfolderBase]: For 296428/296468 co-relation queries the response was YES. [2024-10-24 23:34:21,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95995 conditions, 17972 events. 6695/17972 cut-off events. For 296428/296468 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 144817 event pairs, 784 based on Foata normal form. 81/18043 useless extension candidates. Maximal degree in co-relation 95898. Up to 2544 conditions per place. [2024-10-24 23:34:21,177 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 594 selfloop transitions, 953 changer transitions 17/1572 dead transitions. [2024-10-24 23:34:21,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 1572 transitions, 29711 flow [2024-10-24 23:34:21,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2024-10-24 23:34:21,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2024-10-24 23:34:21,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 1246 transitions. [2024-10-24 23:34:21,181 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4314404432132964 [2024-10-24 23:34:21,181 INFO L175 Difference]: Start difference. First operand has 309 places, 888 transitions, 18259 flow. Second operand 76 states and 1246 transitions. [2024-10-24 23:34:21,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 1572 transitions, 29711 flow [2024-10-24 23:34:22,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 1572 transitions, 29305 flow, removed 159 selfloop flow, removed 18 redundant places. [2024-10-24 23:34:22,700 INFO L231 Difference]: Finished difference. Result has 380 places, 1122 transitions, 25583 flow [2024-10-24 23:34:22,701 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=17952, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=888, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=754, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=76, PETRI_FLOW=25583, PETRI_PLACES=380, PETRI_TRANSITIONS=1122} [2024-10-24 23:34:22,701 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 344 predicate places. [2024-10-24 23:34:22,701 INFO L471 AbstractCegarLoop]: Abstraction has has 380 places, 1122 transitions, 25583 flow [2024-10-24 23:34:22,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 14.928571428571429) internal successors, (418), 28 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:34:22,702 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:34:22,702 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 1, 1, 1, 1] [2024-10-24 23:34:22,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-24 23:34:22,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-24 23:34:22,903 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-10-24 23:34:22,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:34:22,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1467852032, now seen corresponding path program 3 times [2024-10-24 23:34:22,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:34:22,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001483140] [2024-10-24 23:34:22,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:34:22,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:34:22,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:34:23,492 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 0 proven. 550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:34:23,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:34:23,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001483140] [2024-10-24 23:34:23,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001483140] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:34:23,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162982127] [2024-10-24 23:34:23,494 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-24 23:34:23,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:34:23,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:34:23,497 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:34:23,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-24 23:34:23,665 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-10-24 23:34:23,665 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 23:34:23,667 INFO L255 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-24 23:34:23,670 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:34:23,819 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 0 proven. 550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:34:23,820 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:34:24,347 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 0 proven. 550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:34:24,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162982127] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:34:24,348 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:34:24,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 47 [2024-10-24 23:34:24,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228348264] [2024-10-24 23:34:24,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:34:24,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-10-24 23:34:24,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:34:24,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-10-24 23:34:24,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2024-10-24 23:34:24,455 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-10-24 23:34:24,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 1122 transitions, 25583 flow. Second operand has 48 states, 48 states have (on average 18.458333333333332) internal successors, (886), 48 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:34:24,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:34:24,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-10-24 23:34:24,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:34:46,228 INFO L124 PetriNetUnfolderBase]: 18287/47538 cut-off events. [2024-10-24 23:34:46,228 INFO L125 PetriNetUnfolderBase]: For 1068803/1068803 co-relation queries the response was YES. [2024-10-24 23:34:47,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275617 conditions, 47538 events. 18287/47538 cut-off events. For 1068803/1068803 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 383078 event pairs, 477 based on Foata normal form. 2147/49685 useless extension candidates. Maximal degree in co-relation 275511. Up to 6907 conditions per place. [2024-10-24 23:34:47,287 INFO L140 encePairwiseOnDemand]: 34/38 looper letters, 4711 selfloop transitions, 1946 changer transitions 948/7615 dead transitions. [2024-10-24 23:34:47,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 7615 transitions, 172143 flow [2024-10-24 23:34:47,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-10-24 23:34:47,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2024-10-24 23:34:47,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 1226 transitions. [2024-10-24 23:34:47,289 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7013729977116705 [2024-10-24 23:34:47,289 INFO L175 Difference]: Start difference. First operand has 380 places, 1122 transitions, 25583 flow. Second operand 46 states and 1226 transitions. [2024-10-24 23:34:47,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 7615 transitions, 172143 flow [2024-10-24 23:34:51,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 7615 transitions, 168081 flow, removed 1402 selfloop flow, removed 20 redundant places. [2024-10-24 23:34:51,994 INFO L231 Difference]: Finished difference. Result has 429 places, 2374 transitions, 61817 flow [2024-10-24 23:34:51,996 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=25151, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=791, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=61817, PETRI_PLACES=429, PETRI_TRANSITIONS=2374} [2024-10-24 23:34:51,996 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 393 predicate places. [2024-10-24 23:34:51,996 INFO L471 AbstractCegarLoop]: Abstraction has has 429 places, 2374 transitions, 61817 flow [2024-10-24 23:34:51,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 18.458333333333332) internal successors, (886), 48 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:34:51,997 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:34:51,997 INFO L204 CegarLoopForPetriNet]: trace histogram [23, 23, 23, 23, 23, 23, 22, 15, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:34:52,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-10-24 23:34:52,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-24 23:34:52,198 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-10-24 23:34:52,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:34:52,198 INFO L85 PathProgramCache]: Analyzing trace with hash 428391110, now seen corresponding path program 4 times [2024-10-24 23:34:52,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:34:52,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401530795] [2024-10-24 23:34:52,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:34:52,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:34:52,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:34:52,806 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 984 proven. 303 refuted. 0 times theorem prover too weak. 793 trivial. 0 not checked. [2024-10-24 23:34:52,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:34:52,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401530795] [2024-10-24 23:34:52,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401530795] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:34:52,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122543499] [2024-10-24 23:34:52,806 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-24 23:34:52,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:34:52,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:34:52,808 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:34:52,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-24 23:34:53,045 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-24 23:34:53,045 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 23:34:53,054 INFO L255 TraceCheckSpWp]: Trace formula consists of 772 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-24 23:34:53,058 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:34:53,184 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 984 proven. 303 refuted. 0 times theorem prover too weak. 793 trivial. 0 not checked. [2024-10-24 23:34:53,185 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:34:53,479 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 984 proven. 303 refuted. 0 times theorem prover too weak. 793 trivial. 0 not checked. [2024-10-24 23:34:53,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122543499] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:34:53,480 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:34:53,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 35 [2024-10-24 23:34:53,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678378106] [2024-10-24 23:34:53,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:34:53,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-10-24 23:34:53,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:34:53,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-10-24 23:34:53,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=311, Invalid=949, Unknown=0, NotChecked=0, Total=1260 [2024-10-24 23:34:53,530 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-10-24 23:34:53,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 2374 transitions, 61817 flow. Second operand has 36 states, 36 states have (on average 14.777777777777779) internal successors, (532), 36 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:34:53,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:34:53,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-10-24 23:34:53,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand