./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../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 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../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-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 07:46:48,496 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 07:46:48,552 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-17 07:46:48,558 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 07:46:48,558 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 07:46:48,577 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 07:46:48,578 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 07:46:48,578 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 07:46:48,579 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 07:46:48,579 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 07:46:48,579 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 07:46:48,579 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 07:46:48,580 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 07:46:48,580 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 07:46:48,580 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 07:46:48,581 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 07:46:48,581 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-17 07:46:48,581 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 07:46:48,582 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 07:46:48,582 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 07:46:48,585 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 07:46:48,585 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-17 07:46:48,585 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 07:46:48,586 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-17 07:46:48,586 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 07:46:48,586 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-17 07:46:48,586 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 07:46:48,586 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 07:46:48,587 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-17 07:46:48,587 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 07:46:48,587 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 07:46:48,588 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 07:46:48,588 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 07:46:48,588 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 07:46:48,589 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:46:48,589 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 07:46:48,589 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 07:46:48,589 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-17 07:46:48,590 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 07:46:48,590 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 07:46:48,590 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 07:46:48,590 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 07:46:48,591 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 07:46:48,591 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 07:46:48,591 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a65477eb93c2031bed3e6d454d38e75e9833f23496d456d5084dd6ae5f38687 [2024-11-17 07:46:48,785 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 07:46:48,806 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 07:46:48,809 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 07:46:48,810 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 07:46:48,810 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 07:46:48,811 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i [2024-11-17 07:46:49,997 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 07:46:50,174 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 07:46:50,175 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i [2024-11-17 07:46:50,185 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b34056e54/e418b1e03779414a906d8f81d54f5c7c/FLAGd19e07f6f [2024-11-17 07:46:50,545 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b34056e54/e418b1e03779414a906d8f81d54f5c7c [2024-11-17 07:46:50,547 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 07:46:50,548 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 07:46:50,549 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 07:46:50,549 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 07:46:50,553 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 07:46:50,553 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:46:50" (1/1) ... [2024-11-17 07:46:50,554 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3158e2da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:46:50, skipping insertion in model container [2024-11-17 07:46:50,554 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:46:50" (1/1) ... [2024-11-17 07:46:50,591 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 07:46:50,912 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:46:50,927 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 07:46:50,962 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:46:50,993 INFO L204 MainTranslator]: Completed translation [2024-11-17 07:46:50,993 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:46:50 WrapperNode [2024-11-17 07:46:50,993 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 07:46:50,994 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 07:46:50,994 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 07:46:50,994 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 07:46:50,999 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:46:50" (1/1) ... [2024-11-17 07:46:51,007 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:46:50" (1/1) ... [2024-11-17 07:46:51,022 INFO L138 Inliner]: procedures = 165, calls = 24, calls flagged for inlining = 8, calls inlined = 9, statements flattened = 106 [2024-11-17 07:46:51,022 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 07:46:51,023 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 07:46:51,023 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 07:46:51,023 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 07:46:51,030 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:46:50" (1/1) ... [2024-11-17 07:46:51,031 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:46:50" (1/1) ... [2024-11-17 07:46:51,035 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:46:50" (1/1) ... [2024-11-17 07:46:51,045 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]. [2024-11-17 07:46:51,045 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:46:50" (1/1) ... [2024-11-17 07:46:51,045 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:46:50" (1/1) ... [2024-11-17 07:46:51,050 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:46:50" (1/1) ... [2024-11-17 07:46:51,053 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:46:50" (1/1) ... [2024-11-17 07:46:51,054 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:46:50" (1/1) ... [2024-11-17 07:46:51,059 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:46:50" (1/1) ... [2024-11-17 07:46:51,060 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 07:46:51,063 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 07:46:51,063 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 07:46:51,063 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 07:46:51,064 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:46:50" (1/1) ... [2024-11-17 07:46:51,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:46:51,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:46:51,093 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) [2024-11-17 07:46:51,096 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 [2024-11-17 07:46:51,131 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2024-11-17 07:46:51,131 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2024-11-17 07:46:51,132 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-17 07:46:51,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 07:46:51,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 07:46:51,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-17 07:46:51,132 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-17 07:46:51,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 07:46:51,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 07:46:51,134 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-17 07:46:51,233 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 07:46:51,235 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 07:46:51,364 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 07:46:51,365 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 07:46:51,465 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 07:46:51,467 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 07:46:51,467 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:46:51 BoogieIcfgContainer [2024-11-17 07:46:51,467 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 07:46:51,469 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 07:46:51,469 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 07:46:51,473 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 07:46:51,473 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 07:46:50" (1/3) ... [2024-11-17 07:46:51,473 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44da5799 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:46:51, skipping insertion in model container [2024-11-17 07:46:51,474 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:46:50" (2/3) ... [2024-11-17 07:46:51,475 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44da5799 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:46:51, skipping insertion in model container [2024-11-17 07:46:51,475 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:46:51" (3/3) ... [2024-11-17 07:46:51,475 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_69-refine-protected-loop-interval_true.i [2024-11-17 07:46:51,487 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 07:46:51,487 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-11-17 07:46:51,487 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 07:46:51,514 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-17 07:46:51,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 47 transitions, 98 flow [2024-11-17 07:46:51,567 INFO L124 PetriNetUnfolderBase]: 8/46 cut-off events. [2024-11-17 07:46:51,567 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 07:46:51,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 46 events. 8/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 98 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2024-11-17 07:46:51,571 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 47 transitions, 98 flow [2024-11-17 07:46:51,574 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 46 transitions, 95 flow [2024-11-17 07:46:51,582 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 07:46:51,587 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;@30b19139, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 07:46:51,587 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-11-17 07:46:51,597 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 07:46:51,597 INFO L124 PetriNetUnfolderBase]: 5/27 cut-off events. [2024-11-17 07:46:51,597 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 07:46:51,597 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:46:51,598 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:46:51,598 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-17 07:46:51,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:46:51,602 INFO L85 PathProgramCache]: Analyzing trace with hash -590588586, now seen corresponding path program 1 times [2024-11-17 07:46:51,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:46:51,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519793970] [2024-11-17 07:46:51,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:46:51,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:46:51,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:46:51,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:46:51,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:46:51,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519793970] [2024-11-17 07:46:51,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519793970] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:46:51,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:46:51,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:46:51,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34236106] [2024-11-17 07:46:51,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:46:51,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:46:51,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:46:51,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:46:51,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:46:51,893 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-11-17 07:46:51,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 46 transitions, 95 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 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) [2024-11-17 07:46:51,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:46:51,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-11-17 07:46:51,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:46:52,074 INFO L124 PetriNetUnfolderBase]: 198/478 cut-off events. [2024-11-17 07:46:52,075 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 07:46:52,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 840 conditions, 478 events. 198/478 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2300 event pairs, 15 based on Foata normal form. 87/502 useless extension candidates. Maximal degree in co-relation 831. Up to 244 conditions per place. [2024-11-17 07:46:52,079 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 46 selfloop transitions, 8 changer transitions 1/72 dead transitions. [2024-11-17 07:46:52,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 72 transitions, 257 flow [2024-11-17 07:46:52,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 07:46:52,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 07:46:52,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 164 transitions. [2024-11-17 07:46:52,092 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6978723404255319 [2024-11-17 07:46:52,094 INFO L175 Difference]: Start difference. First operand has 42 places, 46 transitions, 95 flow. Second operand 5 states and 164 transitions. [2024-11-17 07:46:52,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 72 transitions, 257 flow [2024-11-17 07:46:52,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 72 transitions, 256 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:46:52,100 INFO L231 Difference]: Finished difference. Result has 47 places, 48 transitions, 152 flow [2024-11-17 07:46:52,107 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=152, PETRI_PLACES=47, PETRI_TRANSITIONS=48} [2024-11-17 07:46:52,110 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 5 predicate places. [2024-11-17 07:46:52,111 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 48 transitions, 152 flow [2024-11-17 07:46:52,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 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) [2024-11-17 07:46:52,111 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:46:52,111 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:46:52,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 07:46:52,111 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-17 07:46:52,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:46:52,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1237288902, now seen corresponding path program 1 times [2024-11-17 07:46:52,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:46:52,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489196745] [2024-11-17 07:46:52,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:46:52,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:46:52,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:46:52,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:46:52,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:46:52,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489196745] [2024-11-17 07:46:52,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489196745] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:46:52,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:46:52,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:46:52,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782834496] [2024-11-17 07:46:52,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:46:52,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:46:52,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:46:52,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:46:52,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:46:52,222 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 47 [2024-11-17 07:46:52,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 48 transitions, 152 flow. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 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) [2024-11-17 07:46:52,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:46:52,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 47 [2024-11-17 07:46:52,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:46:52,367 INFO L124 PetriNetUnfolderBase]: 214/543 cut-off events. [2024-11-17 07:46:52,367 INFO L125 PetriNetUnfolderBase]: For 234/241 co-relation queries the response was YES. [2024-11-17 07:46:52,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1191 conditions, 543 events. 214/543 cut-off events. For 234/241 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2699 event pairs, 48 based on Foata normal form. 13/531 useless extension candidates. Maximal degree in co-relation 1177. Up to 287 conditions per place. [2024-11-17 07:46:52,374 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 53 selfloop transitions, 4 changer transitions 1/77 dead transitions. [2024-11-17 07:46:52,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 77 transitions, 358 flow [2024-11-17 07:46:52,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:46:52,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:46:52,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 130 transitions. [2024-11-17 07:46:52,376 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6914893617021277 [2024-11-17 07:46:52,376 INFO L175 Difference]: Start difference. First operand has 47 places, 48 transitions, 152 flow. Second operand 4 states and 130 transitions. [2024-11-17 07:46:52,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 77 transitions, 358 flow [2024-11-17 07:46:52,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 77 transitions, 358 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 07:46:52,381 INFO L231 Difference]: Finished difference. Result has 52 places, 51 transitions, 192 flow [2024-11-17 07:46:52,382 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=192, PETRI_PLACES=52, PETRI_TRANSITIONS=51} [2024-11-17 07:46:52,382 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 10 predicate places. [2024-11-17 07:46:52,383 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 51 transitions, 192 flow [2024-11-17 07:46:52,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 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) [2024-11-17 07:46:52,383 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:46:52,383 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:46:52,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-17 07:46:52,384 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting workerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-17 07:46:52,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:46:52,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1274906355, now seen corresponding path program 1 times [2024-11-17 07:46:52,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:46:52,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151810640] [2024-11-17 07:46:52,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:46:52,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:46:52,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:46:52,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:46:52,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:46:52,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151810640] [2024-11-17 07:46:52,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151810640] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:46:52,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:46:52,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:46:52,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075204978] [2024-11-17 07:46:52,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:46:52,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:46:52,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:46:52,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:46:52,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 07:46:52,490 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 47 [2024-11-17 07:46:52,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 51 transitions, 192 flow. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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) [2024-11-17 07:46:52,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:46:52,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 47 [2024-11-17 07:46:52,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:46:52,593 INFO L124 PetriNetUnfolderBase]: 97/322 cut-off events. [2024-11-17 07:46:52,594 INFO L125 PetriNetUnfolderBase]: For 228/236 co-relation queries the response was YES. [2024-11-17 07:46:52,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 723 conditions, 322 events. 97/322 cut-off events. For 228/236 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1493 event pairs, 27 based on Foata normal form. 11/324 useless extension candidates. Maximal degree in co-relation 706. Up to 111 conditions per place. [2024-11-17 07:46:52,596 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 28 selfloop transitions, 5 changer transitions 3/57 dead transitions. [2024-11-17 07:46:52,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 57 transitions, 282 flow [2024-11-17 07:46:52,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:46:52,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:46:52,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2024-11-17 07:46:52,599 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6737588652482269 [2024-11-17 07:46:52,600 INFO L175 Difference]: Start difference. First operand has 52 places, 51 transitions, 192 flow. Second operand 3 states and 95 transitions. [2024-11-17 07:46:52,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 57 transitions, 282 flow [2024-11-17 07:46:52,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 57 transitions, 273 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 07:46:52,603 INFO L231 Difference]: Finished difference. Result has 52 places, 46 transitions, 160 flow [2024-11-17 07:46:52,604 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=52, PETRI_TRANSITIONS=46} [2024-11-17 07:46:52,605 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 10 predicate places. [2024-11-17 07:46:52,605 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 160 flow [2024-11-17 07:46:52,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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) [2024-11-17 07:46:52,606 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:46:52,606 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:46:52,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-17 07:46:52,607 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-17 07:46:52,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:46:52,608 INFO L85 PathProgramCache]: Analyzing trace with hash -438765633, now seen corresponding path program 1 times [2024-11-17 07:46:52,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:46:52,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116242633] [2024-11-17 07:46:52,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:46:52,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:46:52,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:46:52,703 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:46:52,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:46:52,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116242633] [2024-11-17 07:46:52,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116242633] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:46:52,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437309774] [2024-11-17 07:46:52,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:46:52,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:46:52,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:46:52,707 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) [2024-11-17 07:46:52,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-17 07:46:52,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:46:52,776 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:46:52,779 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:46:52,843 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:46:52,844 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:46:52,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437309774] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:46:52,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:46:52,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-17 07:46:52,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248499652] [2024-11-17 07:46:52,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:46:52,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:46:52,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:46:52,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:46:52,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:46:52,860 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-11-17 07:46:52,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 46 transitions, 160 flow. Second operand has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 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) [2024-11-17 07:46:52,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:46:52,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-11-17 07:46:52,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:46:53,046 INFO L124 PetriNetUnfolderBase]: 151/438 cut-off events. [2024-11-17 07:46:53,047 INFO L125 PetriNetUnfolderBase]: For 329/346 co-relation queries the response was YES. [2024-11-17 07:46:53,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1070 conditions, 438 events. 151/438 cut-off events. For 329/346 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1928 event pairs, 17 based on Foata normal form. 13/439 useless extension candidates. Maximal degree in co-relation 1053. Up to 119 conditions per place. [2024-11-17 07:46:53,051 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 60 selfloop transitions, 19 changer transitions 4/98 dead transitions. [2024-11-17 07:46:53,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 98 transitions, 529 flow [2024-11-17 07:46:53,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-17 07:46:53,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-17 07:46:53,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 256 transitions. [2024-11-17 07:46:53,052 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5446808510638298 [2024-11-17 07:46:53,052 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 160 flow. Second operand 10 states and 256 transitions. [2024-11-17 07:46:53,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 98 transitions, 529 flow [2024-11-17 07:46:53,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 98 transitions, 512 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:46:53,055 INFO L231 Difference]: Finished difference. Result has 64 places, 56 transitions, 301 flow [2024-11-17 07:46:53,056 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=301, PETRI_PLACES=64, PETRI_TRANSITIONS=56} [2024-11-17 07:46:53,057 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 22 predicate places. [2024-11-17 07:46:53,057 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 56 transitions, 301 flow [2024-11-17 07:46:53,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 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) [2024-11-17 07:46:53,057 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:46:53,057 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:46:53,073 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-17 07:46:53,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:46:53,262 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting workerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-17 07:46:53,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:46:53,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1771891303, now seen corresponding path program 1 times [2024-11-17 07:46:53,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:46:53,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806403392] [2024-11-17 07:46:53,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:46:53,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:46:53,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:46:53,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:46:53,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:46:53,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806403392] [2024-11-17 07:46:53,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806403392] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:46:53,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:46:53,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:46:53,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041455566] [2024-11-17 07:46:53,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:46:53,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:46:53,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:46:53,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:46:53,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:46:53,311 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-11-17 07:46:53,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 56 transitions, 301 flow. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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) [2024-11-17 07:46:53,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:46:53,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-11-17 07:46:53,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:46:53,405 INFO L124 PetriNetUnfolderBase]: 180/525 cut-off events. [2024-11-17 07:46:53,405 INFO L125 PetriNetUnfolderBase]: For 1059/1084 co-relation queries the response was YES. [2024-11-17 07:46:53,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1466 conditions, 525 events. 180/525 cut-off events. For 1059/1084 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2373 event pairs, 60 based on Foata normal form. 9/529 useless extension candidates. Maximal degree in co-relation 1441. Up to 221 conditions per place. [2024-11-17 07:46:53,408 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 51 selfloop transitions, 11 changer transitions 0/78 dead transitions. [2024-11-17 07:46:53,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 78 transitions, 562 flow [2024-11-17 07:46:53,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:46:53,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:46:53,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 108 transitions. [2024-11-17 07:46:53,409 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.574468085106383 [2024-11-17 07:46:53,409 INFO L175 Difference]: Start difference. First operand has 64 places, 56 transitions, 301 flow. Second operand 4 states and 108 transitions. [2024-11-17 07:46:53,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 78 transitions, 562 flow [2024-11-17 07:46:53,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 78 transitions, 531 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-11-17 07:46:53,413 INFO L231 Difference]: Finished difference. Result has 65 places, 58 transitions, 342 flow [2024-11-17 07:46:53,413 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=342, PETRI_PLACES=65, PETRI_TRANSITIONS=58} [2024-11-17 07:46:53,414 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 23 predicate places. [2024-11-17 07:46:53,414 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 58 transitions, 342 flow [2024-11-17 07:46:53,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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) [2024-11-17 07:46:53,414 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:46:53,414 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:46:53,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-17 07:46:53,415 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-17 07:46:53,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:46:53,415 INFO L85 PathProgramCache]: Analyzing trace with hash -716832512, now seen corresponding path program 1 times [2024-11-17 07:46:53,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:46:53,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423375539] [2024-11-17 07:46:53,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:46:53,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:46:53,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:46:53,447 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-17 07:46:53,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:46:53,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423375539] [2024-11-17 07:46:53,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423375539] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:46:53,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:46:53,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:46:53,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965880794] [2024-11-17 07:46:53,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:46:53,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:46:53,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:46:53,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:46:53,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 07:46:53,453 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 47 [2024-11-17 07:46:53,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 58 transitions, 342 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2024-11-17 07:46:53,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:46:53,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 47 [2024-11-17 07:46:53,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:46:53,538 INFO L124 PetriNetUnfolderBase]: 175/538 cut-off events. [2024-11-17 07:46:53,538 INFO L125 PetriNetUnfolderBase]: For 1210/1221 co-relation queries the response was YES. [2024-11-17 07:46:53,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1511 conditions, 538 events. 175/538 cut-off events. For 1210/1221 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2465 event pairs, 71 based on Foata normal form. 11/543 useless extension candidates. Maximal degree in co-relation 1485. Up to 249 conditions per place. [2024-11-17 07:46:53,541 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 36 selfloop transitions, 9 changer transitions 0/67 dead transitions. [2024-11-17 07:46:53,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 67 transitions, 473 flow [2024-11-17 07:46:53,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:46:53,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:46:53,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 91 transitions. [2024-11-17 07:46:53,542 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6453900709219859 [2024-11-17 07:46:53,542 INFO L175 Difference]: Start difference. First operand has 65 places, 58 transitions, 342 flow. Second operand 3 states and 91 transitions. [2024-11-17 07:46:53,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 67 transitions, 473 flow [2024-11-17 07:46:53,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 67 transitions, 461 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-17 07:46:53,546 INFO L231 Difference]: Finished difference. Result has 66 places, 57 transitions, 359 flow [2024-11-17 07:46:53,547 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=359, PETRI_PLACES=66, PETRI_TRANSITIONS=57} [2024-11-17 07:46:53,548 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 24 predicate places. [2024-11-17 07:46:53,548 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 57 transitions, 359 flow [2024-11-17 07:46:53,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2024-11-17 07:46:53,548 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:46:53,549 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:46:53,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-17 07:46:53,549 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-17 07:46:53,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:46:53,549 INFO L85 PathProgramCache]: Analyzing trace with hash 905944727, now seen corresponding path program 1 times [2024-11-17 07:46:53,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:46:53,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771486577] [2024-11-17 07:46:53,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:46:53,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:46:53,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:46:53,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:46:53,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:46:53,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771486577] [2024-11-17 07:46:53,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771486577] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:46:53,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:46:53,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 07:46:53,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657835420] [2024-11-17 07:46:53,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:46:53,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:46:53,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:46:53,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:46:53,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-17 07:46:53,621 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-11-17 07:46:53,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 57 transitions, 359 flow. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 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) [2024-11-17 07:46:53,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:46:53,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-11-17 07:46:53,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:46:53,768 INFO L124 PetriNetUnfolderBase]: 229/659 cut-off events. [2024-11-17 07:46:53,768 INFO L125 PetriNetUnfolderBase]: For 2021/2049 co-relation queries the response was YES. [2024-11-17 07:46:53,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1994 conditions, 659 events. 229/659 cut-off events. For 2021/2049 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 3060 event pairs, 48 based on Foata normal form. 19/672 useless extension candidates. Maximal degree in co-relation 1966. Up to 297 conditions per place. [2024-11-17 07:46:53,772 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 63 selfloop transitions, 13 changer transitions 7/96 dead transitions. [2024-11-17 07:46:53,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 96 transitions, 740 flow [2024-11-17 07:46:53,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-17 07:46:53,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-17 07:46:53,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2024-11-17 07:46:53,773 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4973404255319149 [2024-11-17 07:46:53,773 INFO L175 Difference]: Start difference. First operand has 66 places, 57 transitions, 359 flow. Second operand 8 states and 187 transitions. [2024-11-17 07:46:53,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 96 transitions, 740 flow [2024-11-17 07:46:53,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 96 transitions, 719 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-11-17 07:46:53,778 INFO L231 Difference]: Finished difference. Result has 75 places, 62 transitions, 432 flow [2024-11-17 07:46:53,778 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=432, PETRI_PLACES=75, PETRI_TRANSITIONS=62} [2024-11-17 07:46:53,779 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 33 predicate places. [2024-11-17 07:46:53,779 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 62 transitions, 432 flow [2024-11-17 07:46:53,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 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) [2024-11-17 07:46:53,780 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:46:53,780 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-17 07:46:53,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-17 07:46:53,780 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-17 07:46:53,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:46:53,780 INFO L85 PathProgramCache]: Analyzing trace with hash -579678801, now seen corresponding path program 1 times [2024-11-17 07:46:53,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:46:53,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353838144] [2024-11-17 07:46:53,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:46:53,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:46:53,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:46:53,856 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:46:53,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:46:53,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353838144] [2024-11-17 07:46:53,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353838144] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:46:53,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563459008] [2024-11-17 07:46:53,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:46:53,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:46:53,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:46:53,859 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) [2024-11-17 07:46:53,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-17 07:46:53,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:46:53,914 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:46:53,914 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:46:53,952 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:46:53,952 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:46:53,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563459008] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:46:53,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:46:53,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-17 07:46:53,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270481710] [2024-11-17 07:46:53,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:46:53,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:46:53,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:46:53,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:46:53,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:46:53,964 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 47 [2024-11-17 07:46:53,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 62 transitions, 432 flow. Second operand has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 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) [2024-11-17 07:46:53,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:46:53,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 47 [2024-11-17 07:46:53,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:46:54,121 INFO L124 PetriNetUnfolderBase]: 218/649 cut-off events. [2024-11-17 07:46:54,121 INFO L125 PetriNetUnfolderBase]: For 1621/1633 co-relation queries the response was YES. [2024-11-17 07:46:54,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1877 conditions, 649 events. 218/649 cut-off events. For 1621/1633 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2965 event pairs, 20 based on Foata normal form. 28/654 useless extension candidates. Maximal degree in co-relation 1845. Up to 233 conditions per place. [2024-11-17 07:46:54,128 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 59 selfloop transitions, 12 changer transitions 5/97 dead transitions. [2024-11-17 07:46:54,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 97 transitions, 746 flow [2024-11-17 07:46:54,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:46:54,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:46:54,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 179 transitions. [2024-11-17 07:46:54,129 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6347517730496454 [2024-11-17 07:46:54,129 INFO L175 Difference]: Start difference. First operand has 75 places, 62 transitions, 432 flow. Second operand 6 states and 179 transitions. [2024-11-17 07:46:54,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 97 transitions, 746 flow [2024-11-17 07:46:54,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 97 transitions, 736 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-17 07:46:54,133 INFO L231 Difference]: Finished difference. Result has 77 places, 61 transitions, 444 flow [2024-11-17 07:46:54,133 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=444, PETRI_PLACES=77, PETRI_TRANSITIONS=61} [2024-11-17 07:46:54,134 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 35 predicate places. [2024-11-17 07:46:54,135 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 61 transitions, 444 flow [2024-11-17 07:46:54,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 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) [2024-11-17 07:46:54,135 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:46:54,135 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-17 07:46:54,148 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-17 07:46:54,339 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 [2024-11-17 07:46:54,340 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-17 07:46:54,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:46:54,340 INFO L85 PathProgramCache]: Analyzing trace with hash -790173435, now seen corresponding path program 1 times [2024-11-17 07:46:54,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:46:54,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13598482] [2024-11-17 07:46:54,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:46:54,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:46:54,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:46:54,397 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:46:54,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:46:54,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13598482] [2024-11-17 07:46:54,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13598482] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:46:54,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799365095] [2024-11-17 07:46:54,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:46:54,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:46:54,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:46:54,399 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) [2024-11-17 07:46:54,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-17 07:46:54,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:46:54,453 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:46:54,454 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:46:54,493 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:46:54,493 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:46:54,539 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:46:54,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799365095] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:46:54,540 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:46:54,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-17 07:46:54,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613268418] [2024-11-17 07:46:54,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:46:54,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-17 07:46:54,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:46:54,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-17 07:46:54,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-17 07:46:54,555 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 47 [2024-11-17 07:46:54,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 61 transitions, 444 flow. Second operand has 12 states, 12 states have (on average 23.333333333333332) internal successors, (280), 12 states have internal predecessors, (280), 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) [2024-11-17 07:46:54,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:46:54,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 47 [2024-11-17 07:46:54,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:46:54,839 INFO L124 PetriNetUnfolderBase]: 484/1368 cut-off events. [2024-11-17 07:46:54,840 INFO L125 PetriNetUnfolderBase]: For 4839/4855 co-relation queries the response was YES. [2024-11-17 07:46:54,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4366 conditions, 1368 events. 484/1368 cut-off events. For 4839/4855 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 7586 event pairs, 64 based on Foata normal form. 53/1407 useless extension candidates. Maximal degree in co-relation 4334. Up to 369 conditions per place. [2024-11-17 07:46:54,846 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 113 selfloop transitions, 21 changer transitions 22/177 dead transitions. [2024-11-17 07:46:54,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 177 transitions, 1455 flow [2024-11-17 07:46:54,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-17 07:46:54,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-17 07:46:54,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 317 transitions. [2024-11-17 07:46:54,848 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.674468085106383 [2024-11-17 07:46:54,848 INFO L175 Difference]: Start difference. First operand has 77 places, 61 transitions, 444 flow. Second operand 10 states and 317 transitions. [2024-11-17 07:46:54,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 177 transitions, 1455 flow [2024-11-17 07:46:54,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 177 transitions, 1430 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-17 07:46:54,857 INFO L231 Difference]: Finished difference. Result has 88 places, 77 transitions, 686 flow [2024-11-17 07:46:54,857 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=686, PETRI_PLACES=88, PETRI_TRANSITIONS=77} [2024-11-17 07:46:54,858 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 46 predicate places. [2024-11-17 07:46:54,858 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 77 transitions, 686 flow [2024-11-17 07:46:54,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 23.333333333333332) internal successors, (280), 12 states have internal predecessors, (280), 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) [2024-11-17 07:46:54,859 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:46:54,859 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:46:54,872 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-17 07:46:55,062 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 [2024-11-17 07:46:55,063 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-17 07:46:55,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:46:55,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1453558677, now seen corresponding path program 1 times [2024-11-17 07:46:55,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:46:55,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43917156] [2024-11-17 07:46:55,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:46:55,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:46:55,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:46:55,125 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:46:55,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:46:55,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43917156] [2024-11-17 07:46:55,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43917156] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:46:55,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:46:55,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 07:46:55,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132395930] [2024-11-17 07:46:55,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:46:55,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:46:55,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:46:55,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:46:55,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-17 07:46:55,144 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-11-17 07:46:55,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 77 transitions, 686 flow. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:46:55,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:46:55,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-11-17 07:46:55,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:46:55,376 INFO L124 PetriNetUnfolderBase]: 584/1584 cut-off events. [2024-11-17 07:46:55,377 INFO L125 PetriNetUnfolderBase]: For 9253/9290 co-relation queries the response was YES. [2024-11-17 07:46:55,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5729 conditions, 1584 events. 584/1584 cut-off events. For 9253/9290 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 9068 event pairs, 58 based on Foata normal form. 38/1615 useless extension candidates. Maximal degree in co-relation 5692. Up to 502 conditions per place. [2024-11-17 07:46:55,386 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 76 selfloop transitions, 50 changer transitions 0/138 dead transitions. [2024-11-17 07:46:55,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 138 transitions, 1534 flow [2024-11-17 07:46:55,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-17 07:46:55,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-17 07:46:55,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 180 transitions. [2024-11-17 07:46:55,388 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4787234042553192 [2024-11-17 07:46:55,388 INFO L175 Difference]: Start difference. First operand has 88 places, 77 transitions, 686 flow. Second operand 8 states and 180 transitions. [2024-11-17 07:46:55,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 138 transitions, 1534 flow [2024-11-17 07:46:55,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 138 transitions, 1506 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-17 07:46:55,400 INFO L231 Difference]: Finished difference. Result has 96 places, 96 transitions, 1151 flow [2024-11-17 07:46:55,400 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1151, PETRI_PLACES=96, PETRI_TRANSITIONS=96} [2024-11-17 07:46:55,401 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 54 predicate places. [2024-11-17 07:46:55,401 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 96 transitions, 1151 flow [2024-11-17 07:46:55,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:46:55,401 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:46:55,401 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:46:55,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-17 07:46:55,402 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-17 07:46:55,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:46:55,402 INFO L85 PathProgramCache]: Analyzing trace with hash 648627386, now seen corresponding path program 1 times [2024-11-17 07:46:55,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:46:55,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574829461] [2024-11-17 07:46:55,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:46:55,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:46:55,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:46:55,478 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:46:55,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:46:55,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574829461] [2024-11-17 07:46:55,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574829461] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:46:55,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800903620] [2024-11-17 07:46:55,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:46:55,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:46:55,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:46:55,481 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) [2024-11-17 07:46:55,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-17 07:46:55,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:46:55,536 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-17 07:46:55,537 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:46:55,583 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:46:55,583 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:46:55,622 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:46:55,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800903620] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:46:55,623 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:46:55,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-11-17 07:46:55,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135488201] [2024-11-17 07:46:55,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:46:55,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-17 07:46:55,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:46:55,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-17 07:46:55,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-17 07:46:55,651 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-11-17 07:46:55,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 96 transitions, 1151 flow. Second operand has 12 states, 12 states have (on average 18.5) internal successors, (222), 12 states have internal predecessors, (222), 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) [2024-11-17 07:46:55,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:46:55,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-11-17 07:46:55,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:46:56,071 INFO L124 PetriNetUnfolderBase]: 715/1981 cut-off events. [2024-11-17 07:46:56,072 INFO L125 PetriNetUnfolderBase]: For 17167/17244 co-relation queries the response was YES. [2024-11-17 07:46:56,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7894 conditions, 1981 events. 715/1981 cut-off events. For 17167/17244 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 11026 event pairs, 95 based on Foata normal form. 104/2075 useless extension candidates. Maximal degree in co-relation 7851. Up to 455 conditions per place. [2024-11-17 07:46:56,084 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 111 selfloop transitions, 87 changer transitions 31/241 dead transitions. [2024-11-17 07:46:56,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 241 transitions, 3036 flow [2024-11-17 07:46:56,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-17 07:46:56,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-17 07:46:56,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 443 transitions. [2024-11-17 07:46:56,086 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44883485309017224 [2024-11-17 07:46:56,086 INFO L175 Difference]: Start difference. First operand has 96 places, 96 transitions, 1151 flow. Second operand 21 states and 443 transitions. [2024-11-17 07:46:56,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 241 transitions, 3036 flow [2024-11-17 07:46:56,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 241 transitions, 2828 flow, removed 71 selfloop flow, removed 3 redundant places. [2024-11-17 07:46:56,105 INFO L231 Difference]: Finished difference. Result has 116 places, 131 transitions, 1844 flow [2024-11-17 07:46:56,106 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1037, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1844, PETRI_PLACES=116, PETRI_TRANSITIONS=131} [2024-11-17 07:46:56,106 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 74 predicate places. [2024-11-17 07:46:56,106 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 131 transitions, 1844 flow [2024-11-17 07:46:56,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 18.5) internal successors, (222), 12 states have internal predecessors, (222), 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) [2024-11-17 07:46:56,107 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:46:56,107 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 2, 1, 1, 1, 1] [2024-11-17 07:46:56,119 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-17 07:46:56,311 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 [2024-11-17 07:46:56,312 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-17 07:46:56,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:46:56,312 INFO L85 PathProgramCache]: Analyzing trace with hash 189968238, now seen corresponding path program 1 times [2024-11-17 07:46:56,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:46:56,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244128774] [2024-11-17 07:46:56,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:46:56,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:46:56,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:46:56,412 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 44 proven. 48 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-17 07:46:56,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:46:56,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244128774] [2024-11-17 07:46:56,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244128774] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:46:56,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532382226] [2024-11-17 07:46:56,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:46:56,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:46:56,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:46:56,414 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) [2024-11-17 07:46:56,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-17 07:46:56,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:46:56,479 INFO L255 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-17 07:46:56,480 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:46:56,534 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 44 proven. 48 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-17 07:46:56,535 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:46:56,623 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 44 proven. 48 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-17 07:46:56,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532382226] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:46:56,623 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:46:56,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-11-17 07:46:56,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587037558] [2024-11-17 07:46:56,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:46:56,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-17 07:46:56,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:46:56,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-17 07:46:56,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-11-17 07:46:56,648 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-11-17 07:46:56,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 131 transitions, 1844 flow. Second operand has 18 states, 18 states have (on average 20.72222222222222) internal successors, (373), 18 states have internal predecessors, (373), 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) [2024-11-17 07:46:56,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:46:56,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-11-17 07:46:56,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:46:57,165 INFO L124 PetriNetUnfolderBase]: 719/2180 cut-off events. [2024-11-17 07:46:57,165 INFO L125 PetriNetUnfolderBase]: For 19231/19315 co-relation queries the response was YES. [2024-11-17 07:46:57,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9059 conditions, 2180 events. 719/2180 cut-off events. For 19231/19315 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 13025 event pairs, 256 based on Foata normal form. 19/2188 useless extension candidates. Maximal degree in co-relation 9012. Up to 1016 conditions per place. [2024-11-17 07:46:57,177 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 224 selfloop transitions, 75 changer transitions 10/321 dead transitions. [2024-11-17 07:46:57,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 321 transitions, 3973 flow [2024-11-17 07:46:57,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-17 07:46:57,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-11-17 07:46:57,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 744 transitions. [2024-11-17 07:46:57,181 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-11-17 07:46:57,181 INFO L175 Difference]: Start difference. First operand has 116 places, 131 transitions, 1844 flow. Second operand 31 states and 744 transitions. [2024-11-17 07:46:57,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 321 transitions, 3973 flow [2024-11-17 07:46:57,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 321 transitions, 3672 flow, removed 82 selfloop flow, removed 8 redundant places. [2024-11-17 07:46:57,209 INFO L231 Difference]: Finished difference. Result has 148 places, 170 transitions, 2455 flow [2024-11-17 07:46:57,209 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1648, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2455, PETRI_PLACES=148, PETRI_TRANSITIONS=170} [2024-11-17 07:46:57,210 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 106 predicate places. [2024-11-17 07:46:57,211 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 170 transitions, 2455 flow [2024-11-17 07:46:57,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 20.72222222222222) internal successors, (373), 18 states have internal predecessors, (373), 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) [2024-11-17 07:46:57,211 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:46:57,211 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1] [2024-11-17 07:46:57,224 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-17 07:46:57,412 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 [2024-11-17 07:46:57,412 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-17 07:46:57,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:46:57,413 INFO L85 PathProgramCache]: Analyzing trace with hash 2145274126, now seen corresponding path program 2 times [2024-11-17 07:46:57,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:46:57,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951986314] [2024-11-17 07:46:57,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:46:57,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:46:57,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:46:57,566 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:46:57,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:46:57,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951986314] [2024-11-17 07:46:57,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951986314] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:46:57,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233605450] [2024-11-17 07:46:57,567 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 07:46:57,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:46:57,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:46:57,569 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) [2024-11-17 07:46:57,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-17 07:46:57,639 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 07:46:57,640 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:46:57,641 INFO L255 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-17 07:46:57,642 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:46:57,710 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:46:57,710 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:46:57,863 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:46:57,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233605450] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:46:57,863 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:46:57,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2024-11-17 07:46:57,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943435430] [2024-11-17 07:46:57,864 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:46:57,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-17 07:46:57,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:46:57,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-17 07:46:57,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2024-11-17 07:46:57,904 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 47 [2024-11-17 07:46:57,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 170 transitions, 2455 flow. Second operand has 24 states, 24 states have (on average 23.416666666666668) internal successors, (562), 24 states have internal predecessors, (562), 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) [2024-11-17 07:46:57,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:46:57,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 47 [2024-11-17 07:46:57,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:46:59,100 INFO L124 PetriNetUnfolderBase]: 1857/5649 cut-off events. [2024-11-17 07:46:59,100 INFO L125 PetriNetUnfolderBase]: For 46007/46163 co-relation queries the response was YES. [2024-11-17 07:46:59,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21755 conditions, 5649 events. 1857/5649 cut-off events. For 46007/46163 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 35771 event pairs, 115 based on Foata normal form. 341/5948 useless extension candidates. Maximal degree in co-relation 21698. Up to 719 conditions per place. [2024-11-17 07:46:59,141 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 456 selfloop transitions, 135 changer transitions 96/709 dead transitions. [2024-11-17 07:46:59,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 709 transitions, 9704 flow [2024-11-17 07:46:59,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-17 07:46:59,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-17 07:46:59,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 694 transitions. [2024-11-17 07:46:59,143 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6711798839458414 [2024-11-17 07:46:59,143 INFO L175 Difference]: Start difference. First operand has 148 places, 170 transitions, 2455 flow. Second operand 22 states and 694 transitions. [2024-11-17 07:46:59,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 709 transitions, 9704 flow [2024-11-17 07:46:59,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 709 transitions, 9459 flow, removed 73 selfloop flow, removed 4 redundant places. [2024-11-17 07:46:59,218 INFO L231 Difference]: Finished difference. Result has 175 places, 244 transitions, 4025 flow [2024-11-17 07:46:59,220 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2329, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=4025, PETRI_PLACES=175, PETRI_TRANSITIONS=244} [2024-11-17 07:46:59,220 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 133 predicate places. [2024-11-17 07:46:59,220 INFO L471 AbstractCegarLoop]: Abstraction has has 175 places, 244 transitions, 4025 flow [2024-11-17 07:46:59,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 23.416666666666668) internal successors, (562), 24 states have internal predecessors, (562), 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) [2024-11-17 07:46:59,221 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:46:59,221 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 11, 11, 10, 7, 7, 7, 4, 1, 1, 1, 1] [2024-11-17 07:46:59,234 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-17 07:46:59,425 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 [2024-11-17 07:46:59,426 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-17 07:46:59,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:46:59,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1682279598, now seen corresponding path program 2 times [2024-11-17 07:46:59,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:46:59,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213588526] [2024-11-17 07:46:59,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:46:59,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:46:59,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:46:59,726 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 232 proven. 266 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-17 07:46:59,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:46:59,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213588526] [2024-11-17 07:46:59,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213588526] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:46:59,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037575992] [2024-11-17 07:46:59,726 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 07:46:59,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:46:59,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:46:59,728 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) [2024-11-17 07:46:59,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-17 07:46:59,824 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 07:46:59,825 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:46:59,826 INFO L255 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-17 07:46:59,828 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:46:59,951 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 40 proven. 443 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-17 07:46:59,952 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:47:00,239 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 40 proven. 443 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-17 07:47:00,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037575992] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:47:00,240 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:47:00,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2024-11-17 07:47:00,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098715443] [2024-11-17 07:47:00,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:47:00,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-17 07:47:00,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:47:00,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-17 07:47:00,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2024-11-17 07:47:00,282 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-11-17 07:47:00,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 244 transitions, 4025 flow. Second operand has 34 states, 34 states have (on average 20.676470588235293) internal successors, (703), 34 states have internal predecessors, (703), 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) [2024-11-17 07:47:00,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:47:00,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-11-17 07:47:00,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:47:01,948 INFO L124 PetriNetUnfolderBase]: 2135/6405 cut-off events. [2024-11-17 07:47:01,948 INFO L125 PetriNetUnfolderBase]: For 67296/67530 co-relation queries the response was YES. [2024-11-17 07:47:01,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27624 conditions, 6405 events. 2135/6405 cut-off events. For 67296/67530 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 41729 event pairs, 902 based on Foata normal form. 45/6411 useless extension candidates. Maximal degree in co-relation 27557. Up to 3223 conditions per place. [2024-11-17 07:47:01,991 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 488 selfloop transitions, 151 changer transitions 26/677 dead transitions. [2024-11-17 07:47:01,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 677 transitions, 9111 flow [2024-11-17 07:47:01,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-11-17 07:47:01,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2024-11-17 07:47:01,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 1602 transitions. [2024-11-17 07:47:01,994 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5087329310892347 [2024-11-17 07:47:01,995 INFO L175 Difference]: Start difference. First operand has 175 places, 244 transitions, 4025 flow. Second operand 67 states and 1602 transitions. [2024-11-17 07:47:01,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 677 transitions, 9111 flow [2024-11-17 07:47:02,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 677 transitions, 8712 flow, removed 139 selfloop flow, removed 9 redundant places. [2024-11-17 07:47:02,124 INFO L231 Difference]: Finished difference. Result has 250 places, 324 transitions, 5700 flow [2024-11-17 07:47:02,125 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3756, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=67, PETRI_FLOW=5700, PETRI_PLACES=250, PETRI_TRANSITIONS=324} [2024-11-17 07:47:02,126 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 208 predicate places. [2024-11-17 07:47:02,126 INFO L471 AbstractCegarLoop]: Abstraction has has 250 places, 324 transitions, 5700 flow [2024-11-17 07:47:02,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 20.676470588235293) internal successors, (703), 34 states have internal predecessors, (703), 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) [2024-11-17 07:47:02,127 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:47:02,127 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 11, 11, 10, 8, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:47:02,140 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-17 07:47:02,331 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 [2024-11-17 07:47:02,332 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-17 07:47:02,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:47:02,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1877367192, now seen corresponding path program 1 times [2024-11-17 07:47:02,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:47:02,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484266710] [2024-11-17 07:47:02,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:47:02,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:47:02,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:47:02,544 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 236 proven. 42 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2024-11-17 07:47:02,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:47:02,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484266710] [2024-11-17 07:47:02,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484266710] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:47:02,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083527329] [2024-11-17 07:47:02,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:47:02,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:47:02,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:47:02,546 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) [2024-11-17 07:47:02,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-17 07:47:02,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:47:02,638 INFO L255 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-17 07:47:02,642 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:47:02,683 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 236 proven. 37 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2024-11-17 07:47:02,684 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:47:02,766 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 236 proven. 37 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2024-11-17 07:47:02,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2083527329] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:47:02,766 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:47:02,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 15 [2024-11-17 07:47:02,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91108590] [2024-11-17 07:47:02,767 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:47:02,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-17 07:47:02,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:47:02,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-17 07:47:02,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2024-11-17 07:47:02,788 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-11-17 07:47:02,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 324 transitions, 5700 flow. Second operand has 16 states, 16 states have (on average 19.25) internal successors, (308), 16 states have internal predecessors, (308), 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) [2024-11-17 07:47:02,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:47:02,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-11-17 07:47:02,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:47:05,032 INFO L124 PetriNetUnfolderBase]: 3553/10788 cut-off events. [2024-11-17 07:47:05,032 INFO L125 PetriNetUnfolderBase]: For 115627/115928 co-relation queries the response was YES. [2024-11-17 07:47:05,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45643 conditions, 10788 events. 3553/10788 cut-off events. For 115627/115928 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 78587 event pairs, 719 based on Foata normal form. 248/11004 useless extension candidates. Maximal degree in co-relation 45555. Up to 2291 conditions per place. [2024-11-17 07:47:05,114 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 387 selfloop transitions, 331 changer transitions 18/748 dead transitions. [2024-11-17 07:47:05,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 748 transitions, 11886 flow [2024-11-17 07:47:05,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-17 07:47:05,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-11-17 07:47:05,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 776 transitions. [2024-11-17 07:47:05,116 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44623346751006326 [2024-11-17 07:47:05,117 INFO L175 Difference]: Start difference. First operand has 250 places, 324 transitions, 5700 flow. Second operand 37 states and 776 transitions. [2024-11-17 07:47:05,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 748 transitions, 11886 flow [2024-11-17 07:47:05,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 748 transitions, 11432 flow, removed 185 selfloop flow, removed 25 redundant places. [2024-11-17 07:47:05,512 INFO L231 Difference]: Finished difference. Result has 264 places, 508 transitions, 9261 flow [2024-11-17 07:47:05,512 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5050, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=9261, PETRI_PLACES=264, PETRI_TRANSITIONS=508} [2024-11-17 07:47:05,512 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 222 predicate places. [2024-11-17 07:47:05,513 INFO L471 AbstractCegarLoop]: Abstraction has has 264 places, 508 transitions, 9261 flow [2024-11-17 07:47:05,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 19.25) internal successors, (308), 16 states have internal predecessors, (308), 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) [2024-11-17 07:47:05,513 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:47:05,513 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 11, 11, 10, 7, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:47:05,526 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-17 07:47:05,717 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 [2024-11-17 07:47:05,718 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-17 07:47:05,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:47:05,718 INFO L85 PathProgramCache]: Analyzing trace with hash 887406193, now seen corresponding path program 2 times [2024-11-17 07:47:05,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:47:05,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210088178] [2024-11-17 07:47:05,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:47:05,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:47:05,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:47:05,880 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 262 proven. 83 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-11-17 07:47:05,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:47:05,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210088178] [2024-11-17 07:47:05,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210088178] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:47:05,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866237596] [2024-11-17 07:47:05,881 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 07:47:05,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:47:05,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:47:05,883 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) [2024-11-17 07:47:05,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-17 07:47:05,985 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 07:47:05,985 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:47:05,986 INFO L255 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-17 07:47:05,988 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:47:06,084 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 76 proven. 221 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-17 07:47:06,084 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:47:06,245 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 76 proven. 221 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-17 07:47:06,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866237596] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:47:06,245 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:47:06,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2024-11-17 07:47:06,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480174486] [2024-11-17 07:47:06,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:47:06,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-17 07:47:06,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:47:06,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-17 07:47:06,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552 [2024-11-17 07:47:06,274 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-11-17 07:47:06,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 508 transitions, 9261 flow. Second operand has 24 states, 24 states have (on average 19.0) internal successors, (456), 24 states have internal predecessors, (456), 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) [2024-11-17 07:47:06,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:47:06,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-11-17 07:47:06,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:47:11,113 INFO L124 PetriNetUnfolderBase]: 5963/17916 cut-off events. [2024-11-17 07:47:11,114 INFO L125 PetriNetUnfolderBase]: For 225051/225483 co-relation queries the response was YES. [2024-11-17 07:47:11,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80982 conditions, 17916 events. 5963/17916 cut-off events. For 225051/225483 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 149691 event pairs, 765 based on Foata normal form. 218/18127 useless extension candidates. Maximal degree in co-relation 80887. Up to 2286 conditions per place. [2024-11-17 07:47:11,241 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 327 selfloop transitions, 844 changer transitions 17/1200 dead transitions. [2024-11-17 07:47:11,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 1200 transitions, 21202 flow [2024-11-17 07:47:11,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-11-17 07:47:11,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2024-11-17 07:47:11,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 1150 transitions. [2024-11-17 07:47:11,246 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42926465098917505 [2024-11-17 07:47:11,246 INFO L175 Difference]: Start difference. First operand has 264 places, 508 transitions, 9261 flow. Second operand 57 states and 1150 transitions. [2024-11-17 07:47:11,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 1200 transitions, 21202 flow [2024-11-17 07:47:11,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 1200 transitions, 20808 flow, removed 110 selfloop flow, removed 9 redundant places. [2024-11-17 07:47:11,922 INFO L231 Difference]: Finished difference. Result has 315 places, 893 transitions, 18229 flow [2024-11-17 07:47:11,922 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8848, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=454, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=18229, PETRI_PLACES=315, PETRI_TRANSITIONS=893} [2024-11-17 07:47:11,922 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 273 predicate places. [2024-11-17 07:47:11,923 INFO L471 AbstractCegarLoop]: Abstraction has has 315 places, 893 transitions, 18229 flow [2024-11-17 07:47:11,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 19.0) internal successors, (456), 24 states have internal predecessors, (456), 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) [2024-11-17 07:47:11,923 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:47:11,923 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 1, 1, 1, 1] [2024-11-17 07:47:11,936 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-17 07:47:12,123 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 [2024-11-17 07:47:12,123 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-17 07:47:12,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:47:12,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1193441298, now seen corresponding path program 3 times [2024-11-17 07:47:12,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:47:12,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232971811] [2024-11-17 07:47:12,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:47:12,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:47:12,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:47:12,601 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 0 proven. 605 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:47:12,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:47:12,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232971811] [2024-11-17 07:47:12,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232971811] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:47:12,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389850915] [2024-11-17 07:47:12,602 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-17 07:47:12,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:47:12,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:47:12,604 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) [2024-11-17 07:47:12,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-17 07:47:12,726 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-17 07:47:12,726 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:47:12,727 INFO L255 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-17 07:47:12,729 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:47:12,844 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 0 proven. 605 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:47:12,845 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:47:13,233 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 0 proven. 605 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:47:13,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389850915] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:47:13,234 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:47:13,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 47 [2024-11-17 07:47:13,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102372055] [2024-11-17 07:47:13,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:47:13,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-17 07:47:13,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:47:13,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-17 07:47:13,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2024-11-17 07:47:13,289 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 47 [2024-11-17 07:47:13,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 893 transitions, 18229 flow. Second operand has 48 states, 48 states have (on average 23.458333333333332) internal successors, (1126), 48 states have internal predecessors, (1126), 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) [2024-11-17 07:47:13,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:47:13,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 47 [2024-11-17 07:47:13,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:47:28,639 INFO L124 PetriNetUnfolderBase]: 14546/45563 cut-off events. [2024-11-17 07:47:28,640 INFO L125 PetriNetUnfolderBase]: For 723074/723879 co-relation queries the response was YES. [2024-11-17 07:47:28,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207974 conditions, 45563 events. 14546/45563 cut-off events. For 723074/723879 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 389690 event pairs, 644 based on Foata normal form. 2270/47500 useless extension candidates. Maximal degree in co-relation 207877. Up to 5274 conditions per place. [2024-11-17 07:47:29,139 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 3657 selfloop transitions, 1417 changer transitions 742/5836 dead transitions. [2024-11-17 07:47:29,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 5836 transitions, 116531 flow [2024-11-17 07:47:29,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-17 07:47:29,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2024-11-17 07:47:29,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 1456 transitions. [2024-11-17 07:47:29,311 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6734505087881592 [2024-11-17 07:47:29,311 INFO L175 Difference]: Start difference. First operand has 315 places, 893 transitions, 18229 flow. Second operand 46 states and 1456 transitions. [2024-11-17 07:47:29,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 5836 transitions, 116531 flow [2024-11-17 07:47:32,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 5836 transitions, 114106 flow, removed 963 selfloop flow, removed 18 redundant places. [2024-11-17 07:47:32,591 INFO L231 Difference]: Finished difference. Result has 366 places, 1761 transitions, 41930 flow [2024-11-17 07:47:32,592 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=17922, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=893, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=614, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=41930, PETRI_PLACES=366, PETRI_TRANSITIONS=1761} [2024-11-17 07:47:32,592 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 324 predicate places. [2024-11-17 07:47:32,592 INFO L471 AbstractCegarLoop]: Abstraction has has 366 places, 1761 transitions, 41930 flow [2024-11-17 07:47:32,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 23.458333333333332) internal successors, (1126), 48 states have internal predecessors, (1126), 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) [2024-11-17 07:47:32,593 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:47:32,593 INFO L204 CegarLoopForPetriNet]: trace histogram [23, 23, 23, 23, 23, 23, 23, 22, 17, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:47:32,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-17 07:47:32,793 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 [2024-11-17 07:47:32,793 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-17 07:47:32,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:47:32,794 INFO L85 PathProgramCache]: Analyzing trace with hash 200294665, now seen corresponding path program 3 times [2024-11-17 07:47:32,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:47:32,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578657673] [2024-11-17 07:47:32,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:47:32,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:47:32,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:47:33,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2307 backedges. 968 proven. 192 refuted. 0 times theorem prover too weak. 1147 trivial. 0 not checked. [2024-11-17 07:47:33,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:47:33,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578657673] [2024-11-17 07:47:33,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578657673] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:47:33,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712659216] [2024-11-17 07:47:33,129 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-17 07:47:33,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:47:33,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:47:33,130 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) [2024-11-17 07:47:33,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-17 07:47:33,305 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-17 07:47:33,305 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:47:33,310 INFO L255 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-17 07:47:33,312 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:47:33,493 INFO L134 CoverageAnalysis]: Checked inductivity of 2307 backedges. 88 proven. 985 refuted. 0 times theorem prover too weak. 1234 trivial. 0 not checked. [2024-11-17 07:47:33,493 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:47:33,742 INFO L134 CoverageAnalysis]: Checked inductivity of 2307 backedges. 88 proven. 985 refuted. 0 times theorem prover too weak. 1234 trivial. 0 not checked. [2024-11-17 07:47:33,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712659216] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:47:33,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:47:33,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 27 [2024-11-17 07:47:33,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581204361] [2024-11-17 07:47:33,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:47:33,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-17 07:47:33,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:47:33,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-17 07:47:33,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=569, Unknown=0, NotChecked=0, Total=756 [2024-11-17 07:47:33,777 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-11-17 07:47:33,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 1761 transitions, 41930 flow. Second operand has 28 states, 28 states have (on average 19.071428571428573) internal successors, (534), 28 states have internal predecessors, (534), 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) [2024-11-17 07:47:33,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:47:33,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-11-17 07:47:33,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:48:00,838 INFO L124 PetriNetUnfolderBase]: 19729/59760 cut-off events. [2024-11-17 07:48:00,839 INFO L125 PetriNetUnfolderBase]: For 1027361/1028389 co-relation queries the response was YES. [2024-11-17 07:48:01,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296606 conditions, 59760 events. 19729/59760 cut-off events. For 1027361/1028389 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 542923 event pairs, 2673 based on Foata normal form. 388/60071 useless extension candidates. Maximal degree in co-relation 296491. Up to 7700 conditions per place. [2024-11-17 07:48:01,855 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 994 selfloop transitions, 2065 changer transitions 41/3112 dead transitions. [2024-11-17 07:48:01,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 3112 transitions, 70707 flow [2024-11-17 07:48:01,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2024-11-17 07:48:01,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2024-11-17 07:48:01,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 1582 transitions. [2024-11-17 07:48:01,858 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4428891377379619 [2024-11-17 07:48:01,858 INFO L175 Difference]: Start difference. First operand has 366 places, 1761 transitions, 41930 flow. Second operand 76 states and 1582 transitions. [2024-11-17 07:48:01,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 3112 transitions, 70707 flow