./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread-theta/unwind3-100.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 023d838f 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/pthread-theta/unwind3-100.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 51e84781857cfc73ae131a38742d9d6222707e54f6a010e2853f82c7770f5a96 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 22:29:55,624 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 22:29:55,672 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-10 22:29:55,677 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 22:29:55,677 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 22:29:55,718 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 22:29:55,719 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 22:29:55,720 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 22:29:55,720 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 22:29:55,722 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 22:29:55,722 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 22:29:55,722 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 22:29:55,723 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 22:29:55,724 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 22:29:55,724 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 22:29:55,724 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 22:29:55,725 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 22:29:55,725 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 22:29:55,725 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 22:29:55,725 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 22:29:55,726 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 22:29:55,727 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 22:29:55,727 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 22:29:55,727 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 22:29:55,729 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 22:29:55,729 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-10 22:29:55,729 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 22:29:55,729 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 22:29:55,729 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 22:29:55,730 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 22:29:55,730 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 22:29:55,730 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 22:29:55,730 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 22:29:55,730 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 22:29:55,731 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:29:55,731 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 22:29:55,731 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 22:29:55,731 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 22:29:55,732 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 22:29:55,732 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 22:29:55,732 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 22:29:55,733 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 22:29:55,733 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 22:29:55,733 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 22:29:55,733 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 51e84781857cfc73ae131a38742d9d6222707e54f6a010e2853f82c7770f5a96 [2024-11-10 22:29:55,928 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 22:29:55,950 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 22:29:55,953 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 22:29:55,954 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 22:29:55,955 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 22:29:55,956 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-theta/unwind3-100.i [2024-11-10 22:29:57,131 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 22:29:57,334 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 22:29:57,335 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind3-100.i [2024-11-10 22:29:57,349 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/289844345/80a4c12880d54a7e94e6df60248c31a9/FLAG19eb5f8e1 [2024-11-10 22:29:57,719 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/289844345/80a4c12880d54a7e94e6df60248c31a9 [2024-11-10 22:29:57,722 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 22:29:57,723 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 22:29:57,725 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 22:29:57,726 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 22:29:57,729 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 22:29:57,730 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:29:57" (1/1) ... [2024-11-10 22:29:57,731 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5961101b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:29:57, skipping insertion in model container [2024-11-10 22:29:57,731 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:29:57" (1/1) ... [2024-11-10 22:29:57,762 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 22:29:58,024 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:29:58,032 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 22:29:58,071 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:29:58,100 INFO L204 MainTranslator]: Completed translation [2024-11-10 22:29:58,100 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:29:58 WrapperNode [2024-11-10 22:29:58,100 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 22:29:58,101 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 22:29:58,101 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 22:29:58,101 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 22:29:58,106 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:29:58" (1/1) ... [2024-11-10 22:29:58,118 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:29:58" (1/1) ... [2024-11-10 22:29:58,139 INFO L138 Inliner]: procedures = 169, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 70 [2024-11-10 22:29:58,139 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 22:29:58,140 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 22:29:58,140 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 22:29:58,141 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 22:29:58,148 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:29:58" (1/1) ... [2024-11-10 22:29:58,148 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:29:58" (1/1) ... [2024-11-10 22:29:58,150 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:29:58" (1/1) ... [2024-11-10 22:29:58,160 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-10 22:29:58,160 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:29:58" (1/1) ... [2024-11-10 22:29:58,161 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:29:58" (1/1) ... [2024-11-10 22:29:58,163 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:29:58" (1/1) ... [2024-11-10 22:29:58,163 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:29:58" (1/1) ... [2024-11-10 22:29:58,164 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:29:58" (1/1) ... [2024-11-10 22:29:58,165 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:29:58" (1/1) ... [2024-11-10 22:29:58,166 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 22:29:58,167 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 22:29:58,167 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 22:29:58,167 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 22:29:58,168 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:29:58" (1/1) ... [2024-11-10 22:29:58,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:29:58,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:29:58,193 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) [2024-11-10 22:29:58,198 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 [2024-11-10 22:29:58,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 22:29:58,234 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2024-11-10 22:29:58,234 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2024-11-10 22:29:58,234 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2024-11-10 22:29:58,234 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2024-11-10 22:29:58,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 22:29:58,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 22:29:58,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 22:29:58,237 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 22:29:58,341 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 22:29:58,342 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 22:29:58,449 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 22:29:58,449 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 22:29:58,515 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 22:29:58,517 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 22:29:58,517 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:29:58 BoogieIcfgContainer [2024-11-10 22:29:58,517 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 22:29:58,520 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 22:29:58,520 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 22:29:58,522 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 22:29:58,523 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:29:57" (1/3) ... [2024-11-10 22:29:58,524 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@420dbad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:29:58, skipping insertion in model container [2024-11-10 22:29:58,524 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:29:58" (2/3) ... [2024-11-10 22:29:58,524 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@420dbad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:29:58, skipping insertion in model container [2024-11-10 22:29:58,524 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:29:58" (3/3) ... [2024-11-10 22:29:58,525 INFO L112 eAbstractionObserver]: Analyzing ICFG unwind3-100.i [2024-11-10 22:29:58,538 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 22:29:58,538 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-10 22:29:58,538 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 22:29:58,575 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 22:29:58,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 38 transitions, 84 flow [2024-11-10 22:29:58,625 INFO L124 PetriNetUnfolderBase]: 6/57 cut-off events. [2024-11-10 22:29:58,625 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 22:29:58,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 57 events. 6/57 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 141 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 34. Up to 4 conditions per place. [2024-11-10 22:29:58,628 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 38 transitions, 84 flow [2024-11-10 22:29:58,630 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 37 transitions, 81 flow [2024-11-10 22:29:58,635 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 22:29:58,641 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;@20b93f9c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 22:29:58,641 INFO L334 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2024-11-10 22:29:58,645 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 22:29:58,646 INFO L124 PetriNetUnfolderBase]: 1/15 cut-off events. [2024-11-10 22:29:58,646 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 22:29:58,646 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:29:58,646 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:29:58,647 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 13 more)] === [2024-11-10 22:29:58,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:29:58,653 INFO L85 PathProgramCache]: Analyzing trace with hash -558186978, now seen corresponding path program 1 times [2024-11-10 22:29:58,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:29:58,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277403178] [2024-11-10 22:29:58,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:29:58,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:29:58,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:29:58,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:29:58,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:29:58,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277403178] [2024-11-10 22:29:58,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277403178] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:29:58,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:29:58,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:29:58,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565891068] [2024-11-10 22:29:58,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:29:58,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:29:58,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:29:58,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:29:58,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 22:29:58,937 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-11-10 22:29:58,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 37 transitions, 81 flow. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:29:58,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:29:58,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-11-10 22:29:58,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:29:59,033 INFO L124 PetriNetUnfolderBase]: 92/232 cut-off events. [2024-11-10 22:29:59,034 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-10 22:29:59,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 431 conditions, 232 events. 92/232 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1056 event pairs, 8 based on Foata normal form. 42/251 useless extension candidates. Maximal degree in co-relation 371. Up to 140 conditions per place. [2024-11-10 22:29:59,037 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 26 selfloop transitions, 3 changer transitions 0/44 dead transitions. [2024-11-10 22:29:59,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 44 transitions, 156 flow [2024-11-10 22:29:59,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 22:29:59,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 22:29:59,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 116 transitions. [2024-11-10 22:29:59,046 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6105263157894737 [2024-11-10 22:29:59,047 INFO L175 Difference]: Start difference. First operand has 40 places, 37 transitions, 81 flow. Second operand 5 states and 116 transitions. [2024-11-10 22:29:59,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 44 transitions, 156 flow [2024-11-10 22:29:59,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 44 transitions, 154 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:29:59,051 INFO L231 Difference]: Finished difference. Result has 41 places, 33 transitions, 78 flow [2024-11-10 22:29:59,052 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=78, PETRI_PLACES=41, PETRI_TRANSITIONS=33} [2024-11-10 22:29:59,054 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2024-11-10 22:29:59,054 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 33 transitions, 78 flow [2024-11-10 22:29:59,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:29:59,055 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:29:59,055 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:29:59,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 22:29:59,055 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 13 more)] === [2024-11-10 22:29:59,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:29:59,056 INFO L85 PathProgramCache]: Analyzing trace with hash -558187198, now seen corresponding path program 1 times [2024-11-10 22:29:59,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:29:59,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677855190] [2024-11-10 22:29:59,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:29:59,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:29:59,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:29:59,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:29:59,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:29:59,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677855190] [2024-11-10 22:29:59,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677855190] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:29:59,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:29:59,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:29:59,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151031082] [2024-11-10 22:29:59,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:29:59,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:29:59,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:29:59,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:29:59,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:29:59,100 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 38 [2024-11-10 22:29:59,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 33 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2024-11-10 22:29:59,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:29:59,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 38 [2024-11-10 22:29:59,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:29:59,154 INFO L124 PetriNetUnfolderBase]: 61/181 cut-off events. [2024-11-10 22:29:59,156 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-11-10 22:29:59,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 338 conditions, 181 events. 61/181 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 754 event pairs, 18 based on Foata normal form. 4/163 useless extension candidates. Maximal degree in co-relation 277. Up to 114 conditions per place. [2024-11-10 22:29:59,158 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 19 selfloop transitions, 3 changer transitions 0/36 dead transitions. [2024-11-10 22:29:59,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 36 transitions, 130 flow [2024-11-10 22:29:59,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:29:59,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:29:59,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 75 transitions. [2024-11-10 22:29:59,160 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6578947368421053 [2024-11-10 22:29:59,160 INFO L175 Difference]: Start difference. First operand has 41 places, 33 transitions, 78 flow. Second operand 3 states and 75 transitions. [2024-11-10 22:29:59,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 36 transitions, 130 flow [2024-11-10 22:29:59,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 36 transitions, 124 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 22:29:59,162 INFO L231 Difference]: Finished difference. Result has 39 places, 32 transitions, 82 flow [2024-11-10 22:29:59,163 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=39, PETRI_TRANSITIONS=32} [2024-11-10 22:29:59,164 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -1 predicate places. [2024-11-10 22:29:59,164 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 32 transitions, 82 flow [2024-11-10 22:29:59,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2024-11-10 22:29:59,164 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:29:59,164 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:29:59,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 22:29:59,165 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 13 more)] === [2024-11-10 22:29:59,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:29:59,165 INFO L85 PathProgramCache]: Analyzing trace with hash -123926961, now seen corresponding path program 1 times [2024-11-10 22:29:59,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:29:59,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679194492] [2024-11-10 22:29:59,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:29:59,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:29:59,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:29:59,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:29:59,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:29:59,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679194492] [2024-11-10 22:29:59,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679194492] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:29:59,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:29:59,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:29:59,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191318329] [2024-11-10 22:29:59,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:29:59,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:29:59,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:29:59,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:29:59,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 22:29:59,276 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-11-10 22:29:59,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 32 transitions, 82 flow. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:29:59,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:29:59,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-11-10 22:29:59,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:29:59,375 INFO L124 PetriNetUnfolderBase]: 61/168 cut-off events. [2024-11-10 22:29:59,375 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-11-10 22:29:59,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 338 conditions, 168 events. 61/168 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 653 event pairs, 6 based on Foata normal form. 13/171 useless extension candidates. Maximal degree in co-relation 280. Up to 60 conditions per place. [2024-11-10 22:29:59,376 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 31 selfloop transitions, 3 changer transitions 3/50 dead transitions. [2024-11-10 22:29:59,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 50 transitions, 206 flow [2024-11-10 22:29:59,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 22:29:59,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 22:29:59,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-11-10 22:29:59,378 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.631578947368421 [2024-11-10 22:29:59,378 INFO L175 Difference]: Start difference. First operand has 39 places, 32 transitions, 82 flow. Second operand 5 states and 120 transitions. [2024-11-10 22:29:59,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 50 transitions, 206 flow [2024-11-10 22:29:59,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 50 transitions, 201 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:29:59,379 INFO L231 Difference]: Finished difference. Result has 40 places, 29 transitions, 79 flow [2024-11-10 22:29:59,379 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=79, PETRI_PLACES=40, PETRI_TRANSITIONS=29} [2024-11-10 22:29:59,380 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 0 predicate places. [2024-11-10 22:29:59,380 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 29 transitions, 79 flow [2024-11-10 22:29:59,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:29:59,380 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:29:59,380 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:29:59,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 22:29:59,380 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 13 more)] === [2024-11-10 22:29:59,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:29:59,381 INFO L85 PathProgramCache]: Analyzing trace with hash -876440818, now seen corresponding path program 1 times [2024-11-10 22:29:59,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:29:59,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200050194] [2024-11-10 22:29:59,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:29:59,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:29:59,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:29:59,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:29:59,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:29:59,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200050194] [2024-11-10 22:29:59,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200050194] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:29:59,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:29:59,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:29:59,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698605211] [2024-11-10 22:29:59,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:29:59,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:29:59,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:29:59,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:29:59,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:29:59,454 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 38 [2024-11-10 22:29:59,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 29 transitions, 79 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2024-11-10 22:29:59,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:29:59,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 38 [2024-11-10 22:29:59,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:29:59,492 INFO L124 PetriNetUnfolderBase]: 49/139 cut-off events. [2024-11-10 22:29:59,493 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-11-10 22:29:59,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 301 conditions, 139 events. 49/139 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 491 event pairs, 11 based on Foata normal form. 0/122 useless extension candidates. Maximal degree in co-relation 277. Up to 88 conditions per place. [2024-11-10 22:29:59,494 INFO L140 encePairwiseOnDemand]: 34/38 looper letters, 18 selfloop transitions, 3 changer transitions 0/32 dead transitions. [2024-11-10 22:29:59,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 32 transitions, 130 flow [2024-11-10 22:29:59,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:29:59,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:29:59,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 78 transitions. [2024-11-10 22:29:59,497 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5131578947368421 [2024-11-10 22:29:59,497 INFO L175 Difference]: Start difference. First operand has 40 places, 29 transitions, 79 flow. Second operand 4 states and 78 transitions. [2024-11-10 22:29:59,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 32 transitions, 130 flow [2024-11-10 22:29:59,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 32 transitions, 116 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-11-10 22:29:59,498 INFO L231 Difference]: Finished difference. Result has 38 places, 28 transitions, 74 flow [2024-11-10 22:29:59,499 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=74, PETRI_PLACES=38, PETRI_TRANSITIONS=28} [2024-11-10 22:29:59,499 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -2 predicate places. [2024-11-10 22:29:59,499 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 28 transitions, 74 flow [2024-11-10 22:29:59,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2024-11-10 22:29:59,499 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:29:59,500 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:29:59,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 22:29:59,500 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 13 more)] === [2024-11-10 22:29:59,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:29:59,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1559813953, now seen corresponding path program 1 times [2024-11-10 22:29:59,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:29:59,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383958682] [2024-11-10 22:29:59,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:29:59,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:29:59,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:29:59,516 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 22:29:59,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:29:59,544 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 22:29:59,544 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 22:29:59,545 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 16 remaining) [2024-11-10 22:29:59,546 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2024-11-10 22:29:59,546 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2024-11-10 22:29:59,546 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 16 remaining) [2024-11-10 22:29:59,546 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 16 remaining) [2024-11-10 22:29:59,546 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 16 remaining) [2024-11-10 22:29:59,547 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 16 remaining) [2024-11-10 22:29:59,547 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 16 remaining) [2024-11-10 22:29:59,547 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 16 remaining) [2024-11-10 22:29:59,547 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 16 remaining) [2024-11-10 22:29:59,547 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 16 remaining) [2024-11-10 22:29:59,547 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 16 remaining) [2024-11-10 22:29:59,547 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2024-11-10 22:29:59,547 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2024-11-10 22:29:59,547 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2024-11-10 22:29:59,548 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2024-11-10 22:29:59,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 22:29:59,548 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-10 22:29:59,551 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 22:29:59,551 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-10 22:29:59,572 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 22:29:59,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 60 transitions, 140 flow [2024-11-10 22:29:59,584 INFO L124 PetriNetUnfolderBase]: 9/90 cut-off events. [2024-11-10 22:29:59,584 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-10 22:29:59,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 90 events. 9/90 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 276 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 101. Up to 6 conditions per place. [2024-11-10 22:29:59,585 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 60 transitions, 140 flow [2024-11-10 22:29:59,585 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 45 transitions, 103 flow [2024-11-10 22:29:59,586 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 22:29:59,587 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;@20b93f9c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 22:29:59,587 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2024-11-10 22:29:59,589 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 22:29:59,589 INFO L124 PetriNetUnfolderBase]: 1/15 cut-off events. [2024-11-10 22:29:59,589 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 22:29:59,589 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:29:59,589 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:29:59,589 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2024-11-10 22:29:59,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:29:59,590 INFO L85 PathProgramCache]: Analyzing trace with hash 121891571, now seen corresponding path program 1 times [2024-11-10 22:29:59,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:29:59,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815158722] [2024-11-10 22:29:59,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:29:59,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:29:59,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:29:59,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:29:59,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:29:59,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815158722] [2024-11-10 22:29:59,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815158722] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:29:59,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:29:59,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:29:59,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318329126] [2024-11-10 22:29:59,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:29:59,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:29:59,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:29:59,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:29:59,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 22:29:59,685 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 60 [2024-11-10 22:29:59,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 45 transitions, 103 flow. Second operand has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 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) [2024-11-10 22:29:59,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:29:59,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 60 [2024-11-10 22:29:59,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:29:59,878 INFO L124 PetriNetUnfolderBase]: 962/1791 cut-off events. [2024-11-10 22:29:59,878 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2024-11-10 22:29:59,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3420 conditions, 1791 events. 962/1791 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 11102 event pairs, 90 based on Foata normal form. 261/1929 useless extension candidates. Maximal degree in co-relation 2951. Up to 654 conditions per place. [2024-11-10 22:29:59,889 INFO L140 encePairwiseOnDemand]: 50/60 looper letters, 61 selfloop transitions, 7 changer transitions 0/87 dead transitions. [2024-11-10 22:29:59,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 87 transitions, 337 flow [2024-11-10 22:29:59,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:29:59,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:29:59,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 238 transitions. [2024-11-10 22:29:59,892 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6611111111111111 [2024-11-10 22:29:59,892 INFO L175 Difference]: Start difference. First operand has 50 places, 45 transitions, 103 flow. Second operand 6 states and 238 transitions. [2024-11-10 22:29:59,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 87 transitions, 337 flow [2024-11-10 22:29:59,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 87 transitions, 333 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:29:59,893 INFO L231 Difference]: Finished difference. Result has 57 places, 46 transitions, 141 flow [2024-11-10 22:29:59,894 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=141, PETRI_PLACES=57, PETRI_TRANSITIONS=46} [2024-11-10 22:29:59,894 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 7 predicate places. [2024-11-10 22:29:59,894 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 46 transitions, 141 flow [2024-11-10 22:29:59,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 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) [2024-11-10 22:29:59,894 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:29:59,894 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:29:59,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 22:29:59,895 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2024-11-10 22:29:59,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:29:59,896 INFO L85 PathProgramCache]: Analyzing trace with hash 121891351, now seen corresponding path program 1 times [2024-11-10 22:29:59,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:29:59,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518742286] [2024-11-10 22:29:59,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:29:59,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:29:59,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:29:59,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:29:59,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:29:59,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518742286] [2024-11-10 22:29:59,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518742286] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:29:59,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:29:59,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:29:59,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257582257] [2024-11-10 22:29:59,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:29:59,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:29:59,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:29:59,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:29:59,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:29:59,938 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 60 [2024-11-10 22:29:59,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 46 transitions, 141 flow. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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) [2024-11-10 22:29:59,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:29:59,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 60 [2024-11-10 22:29:59,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:30:00,070 INFO L124 PetriNetUnfolderBase]: 694/1652 cut-off events. [2024-11-10 22:30:00,070 INFO L125 PetriNetUnfolderBase]: For 512/512 co-relation queries the response was YES. [2024-11-10 22:30:00,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3380 conditions, 1652 events. 694/1652 cut-off events. For 512/512 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 11880 event pairs, 479 based on Foata normal form. 4/1483 useless extension candidates. Maximal degree in co-relation 2380. Up to 1137 conditions per place. [2024-11-10 22:30:00,078 INFO L140 encePairwiseOnDemand]: 55/60 looper letters, 30 selfloop transitions, 3 changer transitions 0/53 dead transitions. [2024-11-10 22:30:00,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 53 transitions, 227 flow [2024-11-10 22:30:00,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:30:00,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:30:00,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2024-11-10 22:30:00,079 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6611111111111111 [2024-11-10 22:30:00,079 INFO L175 Difference]: Start difference. First operand has 57 places, 46 transitions, 141 flow. Second operand 3 states and 119 transitions. [2024-11-10 22:30:00,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 53 transitions, 227 flow [2024-11-10 22:30:00,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 53 transitions, 226 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:30:00,084 INFO L231 Difference]: Finished difference. Result has 59 places, 48 transitions, 161 flow [2024-11-10 22:30:00,084 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=161, PETRI_PLACES=59, PETRI_TRANSITIONS=48} [2024-11-10 22:30:00,085 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 9 predicate places. [2024-11-10 22:30:00,085 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 48 transitions, 161 flow [2024-11-10 22:30:00,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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) [2024-11-10 22:30:00,085 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:30:00,085 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:30:00,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 22:30:00,085 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2024-11-10 22:30:00,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:30:00,086 INFO L85 PathProgramCache]: Analyzing trace with hash -516328362, now seen corresponding path program 1 times [2024-11-10 22:30:00,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:30:00,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805786703] [2024-11-10 22:30:00,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:30:00,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:30:00,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:30:00,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:30:00,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:30:00,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805786703] [2024-11-10 22:30:00,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805786703] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:30:00,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:30:00,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:30:00,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481713310] [2024-11-10 22:30:00,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:30:00,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:30:00,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:30:00,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:30:00,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 22:30:00,152 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 60 [2024-11-10 22:30:00,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 48 transitions, 161 flow. Second operand has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 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) [2024-11-10 22:30:00,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:30:00,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 60 [2024-11-10 22:30:00,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:30:00,290 INFO L124 PetriNetUnfolderBase]: 718/1402 cut-off events. [2024-11-10 22:30:00,290 INFO L125 PetriNetUnfolderBase]: For 612/691 co-relation queries the response was YES. [2024-11-10 22:30:00,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3177 conditions, 1402 events. 718/1402 cut-off events. For 612/691 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 8370 event pairs, 128 based on Foata normal form. 91/1456 useless extension candidates. Maximal degree in co-relation 3059. Up to 633 conditions per place. [2024-11-10 22:30:00,297 INFO L140 encePairwiseOnDemand]: 53/60 looper letters, 61 selfloop transitions, 6 changer transitions 0/86 dead transitions. [2024-11-10 22:30:00,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 86 transitions, 409 flow [2024-11-10 22:30:00,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:30:00,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:30:00,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 225 transitions. [2024-11-10 22:30:00,298 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-11-10 22:30:00,298 INFO L175 Difference]: Start difference. First operand has 59 places, 48 transitions, 161 flow. Second operand 6 states and 225 transitions. [2024-11-10 22:30:00,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 86 transitions, 409 flow [2024-11-10 22:30:00,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 86 transitions, 400 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:30:00,301 INFO L231 Difference]: Finished difference. Result has 62 places, 48 transitions, 177 flow [2024-11-10 22:30:00,301 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=177, PETRI_PLACES=62, PETRI_TRANSITIONS=48} [2024-11-10 22:30:00,302 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 12 predicate places. [2024-11-10 22:30:00,302 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 48 transitions, 177 flow [2024-11-10 22:30:00,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 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) [2024-11-10 22:30:00,302 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:30:00,302 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:30:00,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-10 22:30:00,302 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2024-11-10 22:30:00,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:30:00,302 INFO L85 PathProgramCache]: Analyzing trace with hash -599589474, now seen corresponding path program 1 times [2024-11-10 22:30:00,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:30:00,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617256073] [2024-11-10 22:30:00,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:30:00,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:30:00,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:30:00,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:30:00,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:30:00,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617256073] [2024-11-10 22:30:00,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617256073] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:30:00,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:30:00,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:30:00,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181408230] [2024-11-10 22:30:00,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:30:00,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:30:00,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:30:00,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:30:00,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:30:00,350 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 60 [2024-11-10 22:30:00,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 48 transitions, 177 flow. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 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) [2024-11-10 22:30:00,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:30:00,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 60 [2024-11-10 22:30:00,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:30:00,459 INFO L124 PetriNetUnfolderBase]: 727/1673 cut-off events. [2024-11-10 22:30:00,459 INFO L125 PetriNetUnfolderBase]: For 1332/1332 co-relation queries the response was YES. [2024-11-10 22:30:00,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3848 conditions, 1673 events. 727/1673 cut-off events. For 1332/1332 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 11724 event pairs, 503 based on Foata normal form. 0/1490 useless extension candidates. Maximal degree in co-relation 2203. Up to 1190 conditions per place. [2024-11-10 22:30:00,467 INFO L140 encePairwiseOnDemand]: 56/60 looper letters, 32 selfloop transitions, 3 changer transitions 0/52 dead transitions. [2024-11-10 22:30:00,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 52 transitions, 265 flow [2024-11-10 22:30:00,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:30:00,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:30:00,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 127 transitions. [2024-11-10 22:30:00,468 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5291666666666667 [2024-11-10 22:30:00,468 INFO L175 Difference]: Start difference. First operand has 62 places, 48 transitions, 177 flow. Second operand 4 states and 127 transitions. [2024-11-10 22:30:00,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 52 transitions, 265 flow [2024-11-10 22:30:00,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 52 transitions, 247 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-11-10 22:30:00,475 INFO L231 Difference]: Finished difference. Result has 63 places, 47 transitions, 169 flow [2024-11-10 22:30:00,475 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=169, PETRI_PLACES=63, PETRI_TRANSITIONS=47} [2024-11-10 22:30:00,476 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 13 predicate places. [2024-11-10 22:30:00,476 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 47 transitions, 169 flow [2024-11-10 22:30:00,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 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) [2024-11-10 22:30:00,476 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:30:00,476 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:30:00,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-10 22:30:00,476 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2024-11-10 22:30:00,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:30:00,477 INFO L85 PathProgramCache]: Analyzing trace with hash -544050925, now seen corresponding path program 1 times [2024-11-10 22:30:00,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:30:00,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735216222] [2024-11-10 22:30:00,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:30:00,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:30:00,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:30:00,505 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:30:00,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:30:00,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735216222] [2024-11-10 22:30:00,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735216222] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:30:00,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119721578] [2024-11-10 22:30:00,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:30:00,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:30:00,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:30:00,507 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) [2024-11-10 22:30:00,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 22:30:00,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:30:00,557 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-10 22:30:00,558 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:30:00,606 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:30:00,606 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:30:00,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119721578] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:30:00,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:30:00,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2024-11-10 22:30:00,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808573735] [2024-11-10 22:30:00,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:30:00,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:30:00,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:30:00,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:30:00,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-10 22:30:00,617 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 60 [2024-11-10 22:30:00,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 47 transitions, 169 flow. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 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) [2024-11-10 22:30:00,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:30:00,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 60 [2024-11-10 22:30:00,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:30:00,750 INFO L124 PetriNetUnfolderBase]: 654/1584 cut-off events. [2024-11-10 22:30:00,750 INFO L125 PetriNetUnfolderBase]: For 649/685 co-relation queries the response was YES. [2024-11-10 22:30:00,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3334 conditions, 1584 events. 654/1584 cut-off events. For 649/685 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 11072 event pairs, 206 based on Foata normal form. 44/1497 useless extension candidates. Maximal degree in co-relation 1951. Up to 765 conditions per place. [2024-11-10 22:30:00,756 INFO L140 encePairwiseOnDemand]: 56/60 looper letters, 41 selfloop transitions, 3 changer transitions 0/62 dead transitions. [2024-11-10 22:30:00,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 62 transitions, 325 flow [2024-11-10 22:30:00,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:30:00,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:30:00,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 151 transitions. [2024-11-10 22:30:00,757 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6291666666666667 [2024-11-10 22:30:00,757 INFO L175 Difference]: Start difference. First operand has 63 places, 47 transitions, 169 flow. Second operand 4 states and 151 transitions. [2024-11-10 22:30:00,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 62 transitions, 325 flow [2024-11-10 22:30:00,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 62 transitions, 319 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 22:30:00,760 INFO L231 Difference]: Finished difference. Result has 62 places, 46 transitions, 165 flow [2024-11-10 22:30:00,760 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=165, PETRI_PLACES=62, PETRI_TRANSITIONS=46} [2024-11-10 22:30:00,761 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 12 predicate places. [2024-11-10 22:30:00,761 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 46 transitions, 165 flow [2024-11-10 22:30:00,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 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) [2024-11-10 22:30:00,761 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:30:00,761 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:30:00,775 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 22:30:00,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-10 22:30:00,963 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2024-11-10 22:30:00,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:30:00,963 INFO L85 PathProgramCache]: Analyzing trace with hash -544050481, now seen corresponding path program 1 times [2024-11-10 22:30:00,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:30:00,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078621659] [2024-11-10 22:30:00,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:30:00,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:30:00,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:30:01,008 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 22:30:01,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:30:01,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078621659] [2024-11-10 22:30:01,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078621659] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:30:01,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:30:01,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:30:01,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064330923] [2024-11-10 22:30:01,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:30:01,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:30:01,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:30:01,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:30:01,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 22:30:01,031 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 60 [2024-11-10 22:30:01,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 46 transitions, 165 flow. Second operand has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 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) [2024-11-10 22:30:01,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:30:01,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 60 [2024-11-10 22:30:01,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:30:01,190 INFO L124 PetriNetUnfolderBase]: 914/1744 cut-off events. [2024-11-10 22:30:01,191 INFO L125 PetriNetUnfolderBase]: For 833/867 co-relation queries the response was YES. [2024-11-10 22:30:01,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4066 conditions, 1744 events. 914/1744 cut-off events. For 833/867 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 10886 event pairs, 102 based on Foata normal form. 52/1779 useless extension candidates. Maximal degree in co-relation 2407. Up to 485 conditions per place. [2024-11-10 22:30:01,198 INFO L140 encePairwiseOnDemand]: 53/60 looper letters, 61 selfloop transitions, 9 changer transitions 0/88 dead transitions. [2024-11-10 22:30:01,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 88 transitions, 430 flow [2024-11-10 22:30:01,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:30:01,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:30:01,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 222 transitions. [2024-11-10 22:30:01,199 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6166666666666667 [2024-11-10 22:30:01,199 INFO L175 Difference]: Start difference. First operand has 62 places, 46 transitions, 165 flow. Second operand 6 states and 222 transitions. [2024-11-10 22:30:01,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 88 transitions, 430 flow [2024-11-10 22:30:01,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 88 transitions, 416 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 22:30:01,206 INFO L231 Difference]: Finished difference. Result has 68 places, 50 transitions, 220 flow [2024-11-10 22:30:01,206 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=220, PETRI_PLACES=68, PETRI_TRANSITIONS=50} [2024-11-10 22:30:01,207 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 18 predicate places. [2024-11-10 22:30:01,207 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 50 transitions, 220 flow [2024-11-10 22:30:01,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 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) [2024-11-10 22:30:01,208 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:30:01,208 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:30:01,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-10 22:30:01,208 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2024-11-10 22:30:01,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:30:01,208 INFO L85 PathProgramCache]: Analyzing trace with hash 314290708, now seen corresponding path program 1 times [2024-11-10 22:30:01,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:30:01,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239811039] [2024-11-10 22:30:01,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:30:01,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:30:01,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:30:01,242 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:30:01,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:30:01,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239811039] [2024-11-10 22:30:01,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239811039] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:30:01,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064110703] [2024-11-10 22:30:01,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:30:01,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:30:01,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:30:01,244 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) [2024-11-10 22:30:01,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 22:30:01,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:30:01,293 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-10 22:30:01,294 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:30:01,314 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:30:01,314 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:30:01,343 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:30:01,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064110703] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:30:01,344 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:30:01,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-10 22:30:01,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427909827] [2024-11-10 22:30:01,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:30:01,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 22:30:01,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:30:01,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 22:30:01,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-10 22:30:01,354 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 60 [2024-11-10 22:30:01,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 50 transitions, 220 flow. Second operand has 7 states, 7 states have (on average 32.57142857142857) internal successors, (228), 7 states have internal predecessors, (228), 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) [2024-11-10 22:30:01,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:30:01,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 60 [2024-11-10 22:30:01,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:30:01,506 INFO L124 PetriNetUnfolderBase]: 734/1796 cut-off events. [2024-11-10 22:30:01,506 INFO L125 PetriNetUnfolderBase]: For 1822/1902 co-relation queries the response was YES. [2024-11-10 22:30:01,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4061 conditions, 1796 events. 734/1796 cut-off events. For 1822/1902 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 13054 event pairs, 153 based on Foata normal form. 40/1763 useless extension candidates. Maximal degree in co-relation 2910. Up to 912 conditions per place. [2024-11-10 22:30:01,515 INFO L140 encePairwiseOnDemand]: 56/60 looper letters, 60 selfloop transitions, 5 changer transitions 0/84 dead transitions. [2024-11-10 22:30:01,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 84 transitions, 564 flow [2024-11-10 22:30:01,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 22:30:01,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 22:30:01,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 187 transitions. [2024-11-10 22:30:01,517 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6233333333333333 [2024-11-10 22:30:01,517 INFO L175 Difference]: Start difference. First operand has 68 places, 50 transitions, 220 flow. Second operand 5 states and 187 transitions. [2024-11-10 22:30:01,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 84 transitions, 564 flow [2024-11-10 22:30:01,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 84 transitions, 557 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-10 22:30:01,521 INFO L231 Difference]: Finished difference. Result has 70 places, 50 transitions, 225 flow [2024-11-10 22:30:01,521 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=225, PETRI_PLACES=70, PETRI_TRANSITIONS=50} [2024-11-10 22:30:01,521 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 20 predicate places. [2024-11-10 22:30:01,522 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 50 transitions, 225 flow [2024-11-10 22:30:01,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 32.57142857142857) internal successors, (228), 7 states have internal predecessors, (228), 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) [2024-11-10 22:30:01,522 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:30:01,522 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:30:01,538 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-10 22:30:01,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-10 22:30:01,723 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2024-11-10 22:30:01,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:30:01,723 INFO L85 PathProgramCache]: Analyzing trace with hash 314304513, now seen corresponding path program 1 times [2024-11-10 22:30:01,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:30:01,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687858757] [2024-11-10 22:30:01,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:30:01,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:30:01,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:30:01,757 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 22:30:01,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:30:01,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687858757] [2024-11-10 22:30:01,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687858757] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:30:01,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:30:01,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:30:01,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854449261] [2024-11-10 22:30:01,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:30:01,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:30:01,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:30:01,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:30:01,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 22:30:01,778 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 60 [2024-11-10 22:30:01,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 50 transitions, 225 flow. Second operand has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 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) [2024-11-10 22:30:01,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:30:01,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 60 [2024-11-10 22:30:01,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:30:01,957 INFO L124 PetriNetUnfolderBase]: 828/1630 cut-off events. [2024-11-10 22:30:01,958 INFO L125 PetriNetUnfolderBase]: For 1691/1691 co-relation queries the response was YES. [2024-11-10 22:30:01,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4224 conditions, 1630 events. 828/1630 cut-off events. For 1691/1691 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 10284 event pairs, 180 based on Foata normal form. 52/1669 useless extension candidates. Maximal degree in co-relation 2785. Up to 764 conditions per place. [2024-11-10 22:30:01,964 INFO L140 encePairwiseOnDemand]: 54/60 looper letters, 61 selfloop transitions, 7 changer transitions 0/85 dead transitions. [2024-11-10 22:30:01,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 85 transitions, 470 flow [2024-11-10 22:30:01,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:30:01,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:30:01,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 220 transitions. [2024-11-10 22:30:01,966 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2024-11-10 22:30:01,966 INFO L175 Difference]: Start difference. First operand has 70 places, 50 transitions, 225 flow. Second operand 6 states and 220 transitions. [2024-11-10 22:30:01,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 85 transitions, 470 flow [2024-11-10 22:30:01,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 85 transitions, 445 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-10 22:30:01,973 INFO L231 Difference]: Finished difference. Result has 71 places, 49 transitions, 222 flow [2024-11-10 22:30:01,973 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=222, PETRI_PLACES=71, PETRI_TRANSITIONS=49} [2024-11-10 22:30:01,974 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 21 predicate places. [2024-11-10 22:30:01,974 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 49 transitions, 222 flow [2024-11-10 22:30:01,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 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) [2024-11-10 22:30:01,974 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:30:01,974 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:30:01,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-10 22:30:01,975 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2024-11-10 22:30:01,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:30:01,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1260622717, now seen corresponding path program 1 times [2024-11-10 22:30:01,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:30:01,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926052428] [2024-11-10 22:30:01,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:30:01,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:30:01,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:30:02,023 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:30:02,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:30:02,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926052428] [2024-11-10 22:30:02,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926052428] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:30:02,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:30:02,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:30:02,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132379610] [2024-11-10 22:30:02,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:30:02,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:30:02,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:30:02,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:30:02,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:30:02,032 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 60 [2024-11-10 22:30:02,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 49 transitions, 222 flow. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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) [2024-11-10 22:30:02,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:30:02,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 60 [2024-11-10 22:30:02,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:30:02,215 INFO L124 PetriNetUnfolderBase]: 1364/2870 cut-off events. [2024-11-10 22:30:02,215 INFO L125 PetriNetUnfolderBase]: For 3173/3205 co-relation queries the response was YES. [2024-11-10 22:30:02,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7034 conditions, 2870 events. 1364/2870 cut-off events. For 3173/3205 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 20692 event pairs, 914 based on Foata normal form. 88/2839 useless extension candidates. Maximal degree in co-relation 4166. Up to 1602 conditions per place. [2024-11-10 22:30:02,232 INFO L140 encePairwiseOnDemand]: 55/60 looper letters, 62 selfloop transitions, 3 changer transitions 0/82 dead transitions. [2024-11-10 22:30:02,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 82 transitions, 568 flow [2024-11-10 22:30:02,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:30:02,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:30:02,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 161 transitions. [2024-11-10 22:30:02,234 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6708333333333333 [2024-11-10 22:30:02,234 INFO L175 Difference]: Start difference. First operand has 71 places, 49 transitions, 222 flow. Second operand 4 states and 161 transitions. [2024-11-10 22:30:02,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 82 transitions, 568 flow [2024-11-10 22:30:02,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 82 transitions, 543 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-10 22:30:02,243 INFO L231 Difference]: Finished difference. Result has 73 places, 51 transitions, 233 flow [2024-11-10 22:30:02,243 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=233, PETRI_PLACES=73, PETRI_TRANSITIONS=51} [2024-11-10 22:30:02,244 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 23 predicate places. [2024-11-10 22:30:02,245 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 51 transitions, 233 flow [2024-11-10 22:30:02,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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) [2024-11-10 22:30:02,245 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:30:02,245 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-10 22:30:02,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-10 22:30:02,245 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2024-11-10 22:30:02,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:30:02,246 INFO L85 PathProgramCache]: Analyzing trace with hash 6058407, now seen corresponding path program 1 times [2024-11-10 22:30:02,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:30:02,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939032059] [2024-11-10 22:30:02,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:30:02,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:30:02,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:30:02,258 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 22:30:02,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:30:02,266 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 22:30:02,266 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 22:30:02,266 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2024-11-10 22:30:02,266 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 22 remaining) [2024-11-10 22:30:02,266 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 22 remaining) [2024-11-10 22:30:02,266 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 22 remaining) [2024-11-10 22:30:02,266 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 22 remaining) [2024-11-10 22:30:02,266 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 22 remaining) [2024-11-10 22:30:02,266 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 22 remaining) [2024-11-10 22:30:02,267 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 22 remaining) [2024-11-10 22:30:02,267 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 22 remaining) [2024-11-10 22:30:02,267 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 22 remaining) [2024-11-10 22:30:02,267 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 22 remaining) [2024-11-10 22:30:02,267 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 22 remaining) [2024-11-10 22:30:02,267 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 22 remaining) [2024-11-10 22:30:02,267 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 22 remaining) [2024-11-10 22:30:02,267 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 22 remaining) [2024-11-10 22:30:02,267 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 22 remaining) [2024-11-10 22:30:02,267 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 22 remaining) [2024-11-10 22:30:02,268 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 22 remaining) [2024-11-10 22:30:02,268 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 22 remaining) [2024-11-10 22:30:02,268 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 22 remaining) [2024-11-10 22:30:02,269 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 22 remaining) [2024-11-10 22:30:02,269 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 22 remaining) [2024-11-10 22:30:02,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-10 22:30:02,269 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:30:02,270 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 22:30:02,270 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-10 22:30:02,293 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 22:30:02,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 82 transitions, 200 flow [2024-11-10 22:30:02,302 INFO L124 PetriNetUnfolderBase]: 12/123 cut-off events. [2024-11-10 22:30:02,302 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-10 22:30:02,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 123 events. 12/123 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 386 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 140. Up to 8 conditions per place. [2024-11-10 22:30:02,302 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 82 transitions, 200 flow [2024-11-10 22:30:02,303 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 53 transitions, 127 flow [2024-11-10 22:30:02,303 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 22:30:02,304 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;@20b93f9c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 22:30:02,304 INFO L334 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2024-11-10 22:30:02,305 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 22:30:02,305 INFO L124 PetriNetUnfolderBase]: 1/15 cut-off events. [2024-11-10 22:30:02,305 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 22:30:02,305 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:30:02,305 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:30:02,305 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2024-11-10 22:30:02,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:30:02,306 INFO L85 PathProgramCache]: Analyzing trace with hash -809827192, now seen corresponding path program 1 times [2024-11-10 22:30:02,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:30:02,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464044373] [2024-11-10 22:30:02,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:30:02,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:30:02,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:30:02,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:30:02,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:30:02,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464044373] [2024-11-10 22:30:02,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464044373] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:30:02,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:30:02,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:30:02,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368766246] [2024-11-10 22:30:02,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:30:02,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:30:02,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:30:02,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:30:02,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 22:30:02,359 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 82 [2024-11-10 22:30:02,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 53 transitions, 127 flow. Second operand has 5 states, 5 states have (on average 37.2) internal successors, (186), 5 states have internal predecessors, (186), 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) [2024-11-10 22:30:02,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:30:02,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 82 [2024-11-10 22:30:02,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:30:02,905 INFO L124 PetriNetUnfolderBase]: 6854/10398 cut-off events. [2024-11-10 22:30:02,906 INFO L125 PetriNetUnfolderBase]: For 393/393 co-relation queries the response was YES. [2024-11-10 22:30:02,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20632 conditions, 10398 events. 6854/10398 cut-off events. For 393/393 co-relation queries the response was YES. Maximal size of possible extension queue 579. Compared 68087 event pairs, 963 based on Foata normal form. 1253/11023 useless extension candidates. Maximal degree in co-relation 13143. Up to 3601 conditions per place. [2024-11-10 22:30:02,940 INFO L140 encePairwiseOnDemand]: 71/82 looper letters, 78 selfloop transitions, 9 changer transitions 0/110 dead transitions. [2024-11-10 22:30:02,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 110 transitions, 450 flow [2024-11-10 22:30:02,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:30:02,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:30:02,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 317 transitions. [2024-11-10 22:30:02,941 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6443089430894309 [2024-11-10 22:30:02,941 INFO L175 Difference]: Start difference. First operand has 60 places, 53 transitions, 127 flow. Second operand 6 states and 317 transitions. [2024-11-10 22:30:02,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 110 transitions, 450 flow [2024-11-10 22:30:02,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 110 transitions, 438 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-11-10 22:30:02,943 INFO L231 Difference]: Finished difference. Result has 67 places, 57 transitions, 185 flow [2024-11-10 22:30:02,943 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=185, PETRI_PLACES=67, PETRI_TRANSITIONS=57} [2024-11-10 22:30:02,943 INFO L277 CegarLoopForPetriNet]: 60 programPoint places, 7 predicate places. [2024-11-10 22:30:02,944 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 57 transitions, 185 flow [2024-11-10 22:30:02,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.2) internal successors, (186), 5 states have internal predecessors, (186), 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) [2024-11-10 22:30:02,944 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:30:02,944 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:30:02,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-10 22:30:02,944 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2024-11-10 22:30:02,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:30:02,944 INFO L85 PathProgramCache]: Analyzing trace with hash -809827860, now seen corresponding path program 1 times [2024-11-10 22:30:02,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:30:02,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566674758] [2024-11-10 22:30:02,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:30:02,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:30:02,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:30:02,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:30:02,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:30:02,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566674758] [2024-11-10 22:30:02,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566674758] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:30:02,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:30:02,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:30:02,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91233402] [2024-11-10 22:30:02,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:30:02,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:30:02,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:30:02,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:30:02,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:30:02,964 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 82 [2024-11-10 22:30:02,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 57 transitions, 185 flow. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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) [2024-11-10 22:30:02,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:30:02,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 82 [2024-11-10 22:30:02,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:30:03,553 INFO L124 PetriNetUnfolderBase]: 5199/10016 cut-off events. [2024-11-10 22:30:03,554 INFO L125 PetriNetUnfolderBase]: For 4173/4470 co-relation queries the response was YES. [2024-11-10 22:30:03,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21169 conditions, 10016 events. 5199/10016 cut-off events. For 4173/4470 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 85079 event pairs, 4027 based on Foata normal form. 123/8932 useless extension candidates. Maximal degree in co-relation 12929. Up to 7532 conditions per place. [2024-11-10 22:30:03,666 INFO L140 encePairwiseOnDemand]: 77/82 looper letters, 37 selfloop transitions, 3 changer transitions 0/64 dead transitions. [2024-11-10 22:30:03,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 64 transitions, 285 flow [2024-11-10 22:30:03,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:30:03,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:30:03,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 159 transitions. [2024-11-10 22:30:03,671 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6463414634146342 [2024-11-10 22:30:03,671 INFO L175 Difference]: Start difference. First operand has 67 places, 57 transitions, 185 flow. Second operand 3 states and 159 transitions. [2024-11-10 22:30:03,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 64 transitions, 285 flow [2024-11-10 22:30:03,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 64 transitions, 284 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:30:03,679 INFO L231 Difference]: Finished difference. Result has 69 places, 59 transitions, 205 flow [2024-11-10 22:30:03,680 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=205, PETRI_PLACES=69, PETRI_TRANSITIONS=59} [2024-11-10 22:30:03,680 INFO L277 CegarLoopForPetriNet]: 60 programPoint places, 9 predicate places. [2024-11-10 22:30:03,681 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 59 transitions, 205 flow [2024-11-10 22:30:03,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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) [2024-11-10 22:30:03,681 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:30:03,681 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:30:03,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-10 22:30:03,682 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2024-11-10 22:30:03,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:30:03,682 INFO L85 PathProgramCache]: Analyzing trace with hash 665161153, now seen corresponding path program 1 times [2024-11-10 22:30:03,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:30:03,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403367472] [2024-11-10 22:30:03,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:30:03,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:30:03,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:30:03,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:30:03,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:30:03,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403367472] [2024-11-10 22:30:03,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403367472] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:30:03,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:30:03,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:30:03,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807473128] [2024-11-10 22:30:03,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:30:03,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:30:03,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:30:03,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:30:03,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 22:30:03,733 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 82 [2024-11-10 22:30:03,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 59 transitions, 205 flow. Second operand has 5 states, 5 states have (on average 37.2) internal successors, (186), 5 states have internal predecessors, (186), 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) [2024-11-10 22:30:03,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:30:03,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 82 [2024-11-10 22:30:03,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:30:04,240 INFO L124 PetriNetUnfolderBase]: 5448/8403 cut-off events. [2024-11-10 22:30:04,240 INFO L125 PetriNetUnfolderBase]: For 4581/5088 co-relation queries the response was YES. [2024-11-10 22:30:04,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20483 conditions, 8403 events. 5448/8403 cut-off events. For 4581/5088 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 54450 event pairs, 1178 based on Foata normal form. 429/8635 useless extension candidates. Maximal degree in co-relation 20364. Up to 4245 conditions per place. [2024-11-10 22:30:04,273 INFO L140 encePairwiseOnDemand]: 74/82 looper letters, 77 selfloop transitions, 8 changer transitions 0/108 dead transitions. [2024-11-10 22:30:04,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 108 transitions, 538 flow [2024-11-10 22:30:04,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:30:04,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:30:04,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 301 transitions. [2024-11-10 22:30:04,278 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6117886178861789 [2024-11-10 22:30:04,278 INFO L175 Difference]: Start difference. First operand has 69 places, 59 transitions, 205 flow. Second operand 6 states and 301 transitions. [2024-11-10 22:30:04,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 108 transitions, 538 flow [2024-11-10 22:30:04,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 108 transitions, 528 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:30:04,281 INFO L231 Difference]: Finished difference. Result has 72 places, 60 transitions, 233 flow [2024-11-10 22:30:04,281 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=233, PETRI_PLACES=72, PETRI_TRANSITIONS=60} [2024-11-10 22:30:04,281 INFO L277 CegarLoopForPetriNet]: 60 programPoint places, 12 predicate places. [2024-11-10 22:30:04,282 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 60 transitions, 233 flow [2024-11-10 22:30:04,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.2) internal successors, (186), 5 states have internal predecessors, (186), 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) [2024-11-10 22:30:04,282 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:30:04,282 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:30:04,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-10 22:30:04,282 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2024-11-10 22:30:04,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:30:04,282 INFO L85 PathProgramCache]: Analyzing trace with hash 344985028, now seen corresponding path program 1 times [2024-11-10 22:30:04,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:30:04,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133001365] [2024-11-10 22:30:04,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:30:04,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:30:04,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:30:04,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:30:04,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:30:04,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133001365] [2024-11-10 22:30:04,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133001365] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:30:04,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:30:04,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:30:04,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163621248] [2024-11-10 22:30:04,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:30:04,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:30:04,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:30:04,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:30:04,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:30:04,325 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 82 [2024-11-10 22:30:04,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 60 transitions, 233 flow. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 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) [2024-11-10 22:30:04,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:30:04,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 82 [2024-11-10 22:30:04,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:30:04,962 INFO L124 PetriNetUnfolderBase]: 5497/10449 cut-off events. [2024-11-10 22:30:04,962 INFO L125 PetriNetUnfolderBase]: For 7599/7916 co-relation queries the response was YES. [2024-11-10 22:30:04,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23989 conditions, 10449 events. 5497/10449 cut-off events. For 7599/7916 co-relation queries the response was YES. Maximal size of possible extension queue 559. Compared 88001 event pairs, 4269 based on Foata normal form. 127/9184 useless extension candidates. Maximal degree in co-relation 10604. Up to 7976 conditions per place. [2024-11-10 22:30:05,015 INFO L140 encePairwiseOnDemand]: 78/82 looper letters, 40 selfloop transitions, 3 changer transitions 0/64 dead transitions. [2024-11-10 22:30:05,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 64 transitions, 337 flow [2024-11-10 22:30:05,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:30:05,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:30:05,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 171 transitions. [2024-11-10 22:30:05,017 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5213414634146342 [2024-11-10 22:30:05,017 INFO L175 Difference]: Start difference. First operand has 72 places, 60 transitions, 233 flow. Second operand 4 states and 171 transitions. [2024-11-10 22:30:05,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 64 transitions, 337 flow [2024-11-10 22:30:05,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 64 transitions, 325 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-10 22:30:05,027 INFO L231 Difference]: Finished difference. Result has 74 places, 59 transitions, 230 flow [2024-11-10 22:30:05,027 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=230, PETRI_PLACES=74, PETRI_TRANSITIONS=59} [2024-11-10 22:30:05,027 INFO L277 CegarLoopForPetriNet]: 60 programPoint places, 14 predicate places. [2024-11-10 22:30:05,027 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 59 transitions, 230 flow [2024-11-10 22:30:05,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 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) [2024-11-10 22:30:05,028 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:30:05,028 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:30:05,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-10 22:30:05,028 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2024-11-10 22:30:05,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:30:05,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1984123801, now seen corresponding path program 1 times [2024-11-10 22:30:05,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:30:05,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277177427] [2024-11-10 22:30:05,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:30:05,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:30:05,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:30:05,066 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 22:30:05,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:30:05,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277177427] [2024-11-10 22:30:05,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277177427] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:30:05,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:30:05,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:30:05,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143938992] [2024-11-10 22:30:05,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:30:05,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:30:05,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:30:05,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:30:05,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 22:30:05,087 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 82 [2024-11-10 22:30:05,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 59 transitions, 230 flow. Second operand has 5 states, 5 states have (on average 37.8) internal successors, (189), 5 states have internal predecessors, (189), 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) [2024-11-10 22:30:05,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:30:05,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 82 [2024-11-10 22:30:05,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:30:05,938 INFO L124 PetriNetUnfolderBase]: 9524/14862 cut-off events. [2024-11-10 22:30:05,938 INFO L125 PetriNetUnfolderBase]: For 8494/9211 co-relation queries the response was YES. [2024-11-10 22:30:05,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35946 conditions, 14862 events. 9524/14862 cut-off events. For 8494/9211 co-relation queries the response was YES. Maximal size of possible extension queue 776. Compared 106960 event pairs, 1828 based on Foata normal form. 442/14957 useless extension candidates. Maximal degree in co-relation 35862. Up to 5319 conditions per place. [2024-11-10 22:30:05,982 INFO L140 encePairwiseOnDemand]: 74/82 looper letters, 83 selfloop transitions, 15 changer transitions 0/121 dead transitions. [2024-11-10 22:30:05,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 121 transitions, 651 flow [2024-11-10 22:30:05,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:30:05,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:30:05,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 301 transitions. [2024-11-10 22:30:05,983 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6117886178861789 [2024-11-10 22:30:05,983 INFO L175 Difference]: Start difference. First operand has 74 places, 59 transitions, 230 flow. Second operand 6 states and 301 transitions. [2024-11-10 22:30:05,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 121 transitions, 651 flow [2024-11-10 22:30:06,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 121 transitions, 643 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 22:30:06,015 INFO L231 Difference]: Finished difference. Result has 80 places, 69 transitions, 357 flow [2024-11-10 22:30:06,015 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=357, PETRI_PLACES=80, PETRI_TRANSITIONS=69} [2024-11-10 22:30:06,016 INFO L277 CegarLoopForPetriNet]: 60 programPoint places, 20 predicate places. [2024-11-10 22:30:06,016 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 69 transitions, 357 flow [2024-11-10 22:30:06,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.8) internal successors, (189), 5 states have internal predecessors, (189), 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) [2024-11-10 22:30:06,016 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:30:06,016 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:30:06,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-10 22:30:06,016 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2024-11-10 22:30:06,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:30:06,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1984123581, now seen corresponding path program 1 times [2024-11-10 22:30:06,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:30:06,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539870833] [2024-11-10 22:30:06,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:30:06,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:30:06,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:30:06,038 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:30:06,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:30:06,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539870833] [2024-11-10 22:30:06,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539870833] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:30:06,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635361586] [2024-11-10 22:30:06,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:30:06,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:30:06,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:30:06,040 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) [2024-11-10 22:30:06,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 22:30:06,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:30:06,092 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-10 22:30:06,093 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:30:06,107 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:30:06,107 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:30:06,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635361586] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:30:06,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:30:06,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2024-11-10 22:30:06,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694635222] [2024-11-10 22:30:06,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:30:06,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:30:06,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:30:06,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:30:06,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-10 22:30:06,114 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 82 [2024-11-10 22:30:06,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 69 transitions, 357 flow. Second operand has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 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) [2024-11-10 22:30:06,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:30:06,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 82 [2024-11-10 22:30:06,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:30:06,916 INFO L124 PetriNetUnfolderBase]: 8212/16187 cut-off events. [2024-11-10 22:30:06,916 INFO L125 PetriNetUnfolderBase]: For 26079/27699 co-relation queries the response was YES. [2024-11-10 22:30:06,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38536 conditions, 16187 events. 8212/16187 cut-off events. For 26079/27699 co-relation queries the response was YES. Maximal size of possible extension queue 819. Compared 150947 event pairs, 2873 based on Foata normal form. 844/15704 useless extension candidates. Maximal degree in co-relation 23268. Up to 8403 conditions per place. [2024-11-10 22:30:07,089 INFO L140 encePairwiseOnDemand]: 78/82 looper letters, 74 selfloop transitions, 3 changer transitions 0/100 dead transitions. [2024-11-10 22:30:07,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 100 transitions, 741 flow [2024-11-10 22:30:07,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:30:07,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:30:07,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 206 transitions. [2024-11-10 22:30:07,090 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6280487804878049 [2024-11-10 22:30:07,091 INFO L175 Difference]: Start difference. First operand has 80 places, 69 transitions, 357 flow. Second operand 4 states and 206 transitions. [2024-11-10 22:30:07,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 100 transitions, 741 flow [2024-11-10 22:30:07,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 100 transitions, 740 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:30:07,106 INFO L231 Difference]: Finished difference. Result has 81 places, 68 transitions, 358 flow [2024-11-10 22:30:07,106 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=358, PETRI_PLACES=81, PETRI_TRANSITIONS=68} [2024-11-10 22:30:07,107 INFO L277 CegarLoopForPetriNet]: 60 programPoint places, 21 predicate places. [2024-11-10 22:30:07,107 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 68 transitions, 358 flow [2024-11-10 22:30:07,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 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) [2024-11-10 22:30:07,107 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:30:07,107 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:30:07,121 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-10 22:30:07,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:30:07,312 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2024-11-10 22:30:07,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:30:07,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1378289148, now seen corresponding path program 1 times [2024-11-10 22:30:07,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:30:07,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326679095] [2024-11-10 22:30:07,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:30:07,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:30:07,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:30:07,345 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:30:07,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:30:07,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326679095] [2024-11-10 22:30:07,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326679095] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:30:07,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373965928] [2024-11-10 22:30:07,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:30:07,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:30:07,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:30:07,349 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) [2024-11-10 22:30:07,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 22:30:07,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:30:07,401 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-10 22:30:07,402 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:30:07,419 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:30:07,419 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:30:07,439 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:30:07,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373965928] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:30:07,440 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:30:07,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-10 22:30:07,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796447908] [2024-11-10 22:30:07,440 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:30:07,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 22:30:07,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:30:07,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 22:30:07,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-10 22:30:07,456 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 82 [2024-11-10 22:30:07,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 68 transitions, 358 flow. Second operand has 7 states, 7 states have (on average 44.57142857142857) internal successors, (312), 7 states have internal predecessors, (312), 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) [2024-11-10 22:30:07,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:30:07,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 82 [2024-11-10 22:30:07,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:30:08,645 INFO L124 PetriNetUnfolderBase]: 7729/15265 cut-off events. [2024-11-10 22:30:08,645 INFO L125 PetriNetUnfolderBase]: For 26132/27801 co-relation queries the response was YES. [2024-11-10 22:30:08,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36363 conditions, 15265 events. 7729/15265 cut-off events. For 26132/27801 co-relation queries the response was YES. Maximal size of possible extension queue 785. Compared 141398 event pairs, 1521 based on Foata normal form. 581/14993 useless extension candidates. Maximal degree in co-relation 22035. Up to 8411 conditions per place. [2024-11-10 22:30:08,694 INFO L140 encePairwiseOnDemand]: 78/82 looper letters, 116 selfloop transitions, 7 changer transitions 0/146 dead transitions. [2024-11-10 22:30:08,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 146 transitions, 1164 flow [2024-11-10 22:30:08,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:30:08,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:30:08,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 309 transitions. [2024-11-10 22:30:08,696 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6280487804878049 [2024-11-10 22:30:08,696 INFO L175 Difference]: Start difference. First operand has 81 places, 68 transitions, 358 flow. Second operand 6 states and 309 transitions. [2024-11-10 22:30:08,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 146 transitions, 1164 flow [2024-11-10 22:30:08,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 146 transitions, 1154 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 22:30:08,706 INFO L231 Difference]: Finished difference. Result has 82 places, 70 transitions, 370 flow [2024-11-10 22:30:08,706 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=370, PETRI_PLACES=82, PETRI_TRANSITIONS=70} [2024-11-10 22:30:08,706 INFO L277 CegarLoopForPetriNet]: 60 programPoint places, 22 predicate places. [2024-11-10 22:30:08,706 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 70 transitions, 370 flow [2024-11-10 22:30:08,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 44.57142857142857) internal successors, (312), 7 states have internal predecessors, (312), 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) [2024-11-10 22:30:08,707 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:30:08,707 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:30:08,720 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-10 22:30:08,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:30:08,907 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2024-11-10 22:30:08,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:30:08,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1378296002, now seen corresponding path program 1 times [2024-11-10 22:30:08,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:30:08,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373647524] [2024-11-10 22:30:08,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:30:08,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:30:08,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:30:08,938 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 22:30:08,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:30:08,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373647524] [2024-11-10 22:30:08,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373647524] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:30:08,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:30:08,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:30:08,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445954226] [2024-11-10 22:30:08,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:30:08,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:30:08,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:30:08,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:30:08,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 22:30:08,964 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 82 [2024-11-10 22:30:08,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 70 transitions, 370 flow. Second operand has 5 states, 5 states have (on average 37.8) internal successors, (189), 5 states have internal predecessors, (189), 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) [2024-11-10 22:30:08,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:30:08,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 82 [2024-11-10 22:30:08,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:30:09,781 INFO L124 PetriNetUnfolderBase]: 9059/14299 cut-off events. [2024-11-10 22:30:09,782 INFO L125 PetriNetUnfolderBase]: For 19448/19665 co-relation queries the response was YES. [2024-11-10 22:30:09,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39604 conditions, 14299 events. 9059/14299 cut-off events. For 19448/19665 co-relation queries the response was YES. Maximal size of possible extension queue 774. Compared 104867 event pairs, 2673 based on Foata normal form. 542/14541 useless extension candidates. Maximal degree in co-relation 22154. Up to 7292 conditions per place. [2024-11-10 22:30:09,830 INFO L140 encePairwiseOnDemand]: 75/82 looper letters, 91 selfloop transitions, 11 changer transitions 0/123 dead transitions. [2024-11-10 22:30:09,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 123 transitions, 779 flow [2024-11-10 22:30:09,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:30:09,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:30:09,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 296 transitions. [2024-11-10 22:30:09,833 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6016260162601627 [2024-11-10 22:30:09,833 INFO L175 Difference]: Start difference. First operand has 82 places, 70 transitions, 370 flow. Second operand 6 states and 296 transitions. [2024-11-10 22:30:09,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 123 transitions, 779 flow [2024-11-10 22:30:09,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 123 transitions, 740 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-11-10 22:30:09,886 INFO L231 Difference]: Finished difference. Result has 83 places, 69 transitions, 370 flow [2024-11-10 22:30:09,886 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=370, PETRI_PLACES=83, PETRI_TRANSITIONS=69} [2024-11-10 22:30:09,886 INFO L277 CegarLoopForPetriNet]: 60 programPoint places, 23 predicate places. [2024-11-10 22:30:09,886 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 69 transitions, 370 flow [2024-11-10 22:30:09,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.8) internal successors, (189), 5 states have internal predecessors, (189), 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) [2024-11-10 22:30:09,887 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:30:09,887 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:30:09,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-10 22:30:09,887 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2024-11-10 22:30:09,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:30:09,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1542461772, now seen corresponding path program 1 times [2024-11-10 22:30:09,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:30:09,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911348480] [2024-11-10 22:30:09,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:30:09,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:30:09,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:30:09,910 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:30:09,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:30:09,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911348480] [2024-11-10 22:30:09,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911348480] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:30:09,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:30:09,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:30:09,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940739649] [2024-11-10 22:30:09,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:30:09,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:30:09,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:30:09,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:30:09,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:30:09,921 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 82 [2024-11-10 22:30:09,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 69 transitions, 370 flow. Second operand has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 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) [2024-11-10 22:30:09,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:30:09,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 82 [2024-11-10 22:30:09,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:30:11,420 INFO L124 PetriNetUnfolderBase]: 14097/25474 cut-off events. [2024-11-10 22:30:11,420 INFO L125 PetriNetUnfolderBase]: For 40362/42461 co-relation queries the response was YES. [2024-11-10 22:30:11,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62629 conditions, 25474 events. 14097/25474 cut-off events. For 40362/42461 co-relation queries the response was YES. Maximal size of possible extension queue 1174. Compared 230327 event pairs, 9211 based on Foata normal form. 1357/24798 useless extension candidates. Maximal degree in co-relation 26837. Up to 14749 conditions per place. [2024-11-10 22:30:11,511 INFO L140 encePairwiseOnDemand]: 77/82 looper letters, 104 selfloop transitions, 3 changer transitions 0/128 dead transitions. [2024-11-10 22:30:11,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 128 transitions, 1046 flow [2024-11-10 22:30:11,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:30:11,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:30:11,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 219 transitions. [2024-11-10 22:30:11,512 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6676829268292683 [2024-11-10 22:30:11,512 INFO L175 Difference]: Start difference. First operand has 83 places, 69 transitions, 370 flow. Second operand 4 states and 219 transitions. [2024-11-10 22:30:11,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 128 transitions, 1046 flow [2024-11-10 22:30:11,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 128 transitions, 1032 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:30:11,558 INFO L231 Difference]: Finished difference. Result has 86 places, 71 transitions, 386 flow [2024-11-10 22:30:11,559 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=386, PETRI_PLACES=86, PETRI_TRANSITIONS=71} [2024-11-10 22:30:11,559 INFO L277 CegarLoopForPetriNet]: 60 programPoint places, 26 predicate places. [2024-11-10 22:30:11,559 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 71 transitions, 386 flow [2024-11-10 22:30:11,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 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) [2024-11-10 22:30:11,559 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:30:11,559 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:30:11,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-10 22:30:11,559 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2024-11-10 22:30:11,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:30:11,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1826609130, now seen corresponding path program 1 times [2024-11-10 22:30:11,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:30:11,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872584353] [2024-11-10 22:30:11,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:30:11,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:30:11,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:30:11,598 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:30:11,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:30:11,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872584353] [2024-11-10 22:30:11,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872584353] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:30:11,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:30:11,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 22:30:11,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597129243] [2024-11-10 22:30:11,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:30:11,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 22:30:11,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:30:11,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 22:30:11,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-10 22:30:11,639 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 82 [2024-11-10 22:30:11,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 71 transitions, 386 flow. Second operand has 7 states, 7 states have (on average 35.57142857142857) internal successors, (249), 7 states have internal predecessors, (249), 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) [2024-11-10 22:30:11,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:30:11,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 82 [2024-11-10 22:30:11,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:30:13,820 INFO L124 PetriNetUnfolderBase]: 16754/25357 cut-off events. [2024-11-10 22:30:13,821 INFO L125 PetriNetUnfolderBase]: For 40323/42083 co-relation queries the response was YES. [2024-11-10 22:30:13,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73782 conditions, 25357 events. 16754/25357 cut-off events. For 40323/42083 co-relation queries the response was YES. Maximal size of possible extension queue 1285. Compared 188800 event pairs, 2794 based on Foata normal form. 524/25475 useless extension candidates. Maximal degree in co-relation 73115. Up to 8407 conditions per place. [2024-11-10 22:30:13,916 INFO L140 encePairwiseOnDemand]: 72/82 looper letters, 171 selfloop transitions, 26 changer transitions 0/216 dead transitions. [2024-11-10 22:30:13,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 216 transitions, 1365 flow [2024-11-10 22:30:13,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 22:30:13,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 22:30:13,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 495 transitions. [2024-11-10 22:30:13,918 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6036585365853658 [2024-11-10 22:30:13,918 INFO L175 Difference]: Start difference. First operand has 86 places, 71 transitions, 386 flow. Second operand 10 states and 495 transitions. [2024-11-10 22:30:13,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 216 transitions, 1365 flow [2024-11-10 22:30:14,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 216 transitions, 1349 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:30:14,037 INFO L231 Difference]: Finished difference. Result has 97 places, 82 transitions, 544 flow [2024-11-10 22:30:14,037 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=544, PETRI_PLACES=97, PETRI_TRANSITIONS=82} [2024-11-10 22:30:14,038 INFO L277 CegarLoopForPetriNet]: 60 programPoint places, 37 predicate places. [2024-11-10 22:30:14,038 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 82 transitions, 544 flow [2024-11-10 22:30:14,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 35.57142857142857) internal successors, (249), 7 states have internal predecessors, (249), 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) [2024-11-10 22:30:14,038 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:30:14,038 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:30:14,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-10 22:30:14,038 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2024-11-10 22:30:14,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:30:14,039 INFO L85 PathProgramCache]: Analyzing trace with hash 929160892, now seen corresponding path program 1 times [2024-11-10 22:30:14,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:30:14,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46324461] [2024-11-10 22:30:14,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:30:14,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:30:14,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:30:14,082 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 22:30:14,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:30:14,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46324461] [2024-11-10 22:30:14,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46324461] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:30:14,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:30:14,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 22:30:14,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925349928] [2024-11-10 22:30:14,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:30:14,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 22:30:14,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:30:14,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 22:30:14,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-10 22:30:14,117 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 82 [2024-11-10 22:30:14,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 82 transitions, 544 flow. Second operand has 7 states, 7 states have (on average 35.57142857142857) internal successors, (249), 7 states have internal predecessors, (249), 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) [2024-11-10 22:30:14,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:30:14,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 82 [2024-11-10 22:30:14,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:30:16,163 INFO L124 PetriNetUnfolderBase]: 17543/26734 cut-off events. [2024-11-10 22:30:16,163 INFO L125 PetriNetUnfolderBase]: For 59723/61399 co-relation queries the response was YES. [2024-11-10 22:30:16,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81931 conditions, 26734 events. 17543/26734 cut-off events. For 59723/61399 co-relation queries the response was YES. Maximal size of possible extension queue 1354. Compared 202335 event pairs, 3028 based on Foata normal form. 342/26734 useless extension candidates. Maximal degree in co-relation 62278. Up to 9478 conditions per place. [2024-11-10 22:30:16,278 INFO L140 encePairwiseOnDemand]: 72/82 looper letters, 174 selfloop transitions, 31 changer transitions 0/224 dead transitions. [2024-11-10 22:30:16,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 224 transitions, 1542 flow [2024-11-10 22:30:16,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 22:30:16,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 22:30:16,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 494 transitions. [2024-11-10 22:30:16,279 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6024390243902439 [2024-11-10 22:30:16,279 INFO L175 Difference]: Start difference. First operand has 97 places, 82 transitions, 544 flow. Second operand 10 states and 494 transitions. [2024-11-10 22:30:16,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 224 transitions, 1542 flow [2024-11-10 22:30:16,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 224 transitions, 1477 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-11-10 22:30:16,776 INFO L231 Difference]: Finished difference. Result has 104 places, 92 transitions, 662 flow [2024-11-10 22:30:16,776 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=662, PETRI_PLACES=104, PETRI_TRANSITIONS=92} [2024-11-10 22:30:16,777 INFO L277 CegarLoopForPetriNet]: 60 programPoint places, 44 predicate places. [2024-11-10 22:30:16,777 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 92 transitions, 662 flow [2024-11-10 22:30:16,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 35.57142857142857) internal successors, (249), 7 states have internal predecessors, (249), 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) [2024-11-10 22:30:16,777 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:30:16,777 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:30:16,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-10 22:30:16,777 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2024-11-10 22:30:16,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:30:16,777 INFO L85 PathProgramCache]: Analyzing trace with hash -2061007999, now seen corresponding path program 1 times [2024-11-10 22:30:16,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:30:16,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135296228] [2024-11-10 22:30:16,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:30:16,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:30:16,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:30:16,812 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:30:16,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:30:16,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135296228] [2024-11-10 22:30:16,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135296228] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:30:16,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873677635] [2024-11-10 22:30:16,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:30:16,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:30:16,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:30:16,814 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) [2024-11-10 22:30:16,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 22:30:16,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:30:16,865 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 22:30:16,866 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:30:16,885 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:30:16,886 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:30:16,929 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:30:16,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873677635] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:30:16,929 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:30:16,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-10 22:30:16,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143550181] [2024-11-10 22:30:16,929 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:30:16,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 22:30:16,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:30:16,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 22:30:16,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-10 22:30:16,987 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 82 [2024-11-10 22:30:16,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 92 transitions, 662 flow. Second operand has 12 states, 12 states have (on average 35.0) internal successors, (420), 12 states have internal predecessors, (420), 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) [2024-11-10 22:30:16,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:30:16,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 82 [2024-11-10 22:30:16,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:30:19,320 INFO L124 PetriNetUnfolderBase]: 20117/30034 cut-off events. [2024-11-10 22:30:19,320 INFO L125 PetriNetUnfolderBase]: For 76908/79337 co-relation queries the response was YES. [2024-11-10 22:30:19,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93666 conditions, 30034 events. 20117/30034 cut-off events. For 76908/79337 co-relation queries the response was YES. Maximal size of possible extension queue 1473. Compared 225187 event pairs, 1030 based on Foata normal form. 950/30788 useless extension candidates. Maximal degree in co-relation 92962. Up to 4108 conditions per place. [2024-11-10 22:30:19,454 INFO L140 encePairwiseOnDemand]: 71/82 looper letters, 329 selfloop transitions, 48 changer transitions 2/397 dead transitions. [2024-11-10 22:30:19,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 397 transitions, 2545 flow [2024-11-10 22:30:19,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-10 22:30:19,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-10 22:30:19,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 971 transitions. [2024-11-10 22:30:19,456 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5920731707317073 [2024-11-10 22:30:19,456 INFO L175 Difference]: Start difference. First operand has 104 places, 92 transitions, 662 flow. Second operand 20 states and 971 transitions. [2024-11-10 22:30:19,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 397 transitions, 2545 flow [2024-11-10 22:30:20,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 397 transitions, 2477 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-11-10 22:30:20,123 INFO L231 Difference]: Finished difference. Result has 121 places, 103 transitions, 821 flow [2024-11-10 22:30:20,124 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=821, PETRI_PLACES=121, PETRI_TRANSITIONS=103} [2024-11-10 22:30:20,124 INFO L277 CegarLoopForPetriNet]: 60 programPoint places, 61 predicate places. [2024-11-10 22:30:20,124 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 103 transitions, 821 flow [2024-11-10 22:30:20,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 35.0) internal successors, (420), 12 states have internal predecessors, (420), 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) [2024-11-10 22:30:20,124 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:30:20,124 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:30:20,136 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-10 22:30:20,324 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,SelfDestructingSolverStorable26 [2024-11-10 22:30:20,325 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2024-11-10 22:30:20,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:30:20,325 INFO L85 PathProgramCache]: Analyzing trace with hash 960890955, now seen corresponding path program 1 times [2024-11-10 22:30:20,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:30:20,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159047019] [2024-11-10 22:30:20,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:30:20,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:30:20,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:30:20,357 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-10 22:30:20,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:30:20,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159047019] [2024-11-10 22:30:20,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159047019] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:30:20,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:30:20,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:30:20,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586005006] [2024-11-10 22:30:20,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:30:20,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:30:20,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:30:20,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:30:20,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 22:30:20,378 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 82 [2024-11-10 22:30:20,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 103 transitions, 821 flow. Second operand has 5 states, 5 states have (on average 38.0) internal successors, (190), 5 states have internal predecessors, (190), 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) [2024-11-10 22:30:20,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:30:20,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 82 [2024-11-10 22:30:20,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:30:23,012 INFO L124 PetriNetUnfolderBase]: 22121/35210 cut-off events. [2024-11-10 22:30:23,012 INFO L125 PetriNetUnfolderBase]: For 90689/92955 co-relation queries the response was YES. [2024-11-10 22:30:23,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108755 conditions, 35210 events. 22121/35210 cut-off events. For 90689/92955 co-relation queries the response was YES. Maximal size of possible extension queue 1853. Compared 294875 event pairs, 4885 based on Foata normal form. 645/35351 useless extension candidates. Maximal degree in co-relation 89118. Up to 13337 conditions per place. [2024-11-10 22:30:23,174 INFO L140 encePairwiseOnDemand]: 74/82 looper letters, 124 selfloop transitions, 31 changer transitions 0/190 dead transitions. [2024-11-10 22:30:23,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 190 transitions, 1696 flow [2024-11-10 22:30:23,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:30:23,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:30:23,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 299 transitions. [2024-11-10 22:30:23,175 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6077235772357723 [2024-11-10 22:30:23,175 INFO L175 Difference]: Start difference. First operand has 121 places, 103 transitions, 821 flow. Second operand 6 states and 299 transitions. [2024-11-10 22:30:23,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 190 transitions, 1696 flow [2024-11-10 22:30:24,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 190 transitions, 1505 flow, removed 44 selfloop flow, removed 8 redundant places. [2024-11-10 22:30:24,109 INFO L231 Difference]: Finished difference. Result has 122 places, 125 transitions, 1058 flow [2024-11-10 22:30:24,109 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=698, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1058, PETRI_PLACES=122, PETRI_TRANSITIONS=125} [2024-11-10 22:30:24,109 INFO L277 CegarLoopForPetriNet]: 60 programPoint places, 62 predicate places. [2024-11-10 22:30:24,109 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 125 transitions, 1058 flow [2024-11-10 22:30:24,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.0) internal successors, (190), 5 states have internal predecessors, (190), 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) [2024-11-10 22:30:24,110 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:30:24,110 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:30:24,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-10 22:30:24,110 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2024-11-10 22:30:24,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:30:24,110 INFO L85 PathProgramCache]: Analyzing trace with hash -277151145, now seen corresponding path program 1 times [2024-11-10 22:30:24,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:30:24,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133267549] [2024-11-10 22:30:24,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:30:24,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:30:24,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:30:24,135 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-10 22:30:24,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:30:24,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133267549] [2024-11-10 22:30:24,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133267549] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:30:24,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:30:24,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:30:24,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658564941] [2024-11-10 22:30:24,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:30:24,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:30:24,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:30:24,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:30:24,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 22:30:24,156 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 82 [2024-11-10 22:30:24,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 125 transitions, 1058 flow. Second operand has 5 states, 5 states have (on average 38.0) internal successors, (190), 5 states have internal predecessors, (190), 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) [2024-11-10 22:30:24,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:30:24,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 82 [2024-11-10 22:30:24,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:30:26,897 INFO L124 PetriNetUnfolderBase]: 21350/34318 cut-off events. [2024-11-10 22:30:26,897 INFO L125 PetriNetUnfolderBase]: For 84083/86486 co-relation queries the response was YES. [2024-11-10 22:30:26,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107120 conditions, 34318 events. 21350/34318 cut-off events. For 84083/86486 co-relation queries the response was YES. Maximal size of possible extension queue 1852. Compared 291532 event pairs, 6954 based on Foata normal form. 703/34469 useless extension candidates. Maximal degree in co-relation 91023. Up to 16668 conditions per place. [2024-11-10 22:30:27,067 INFO L140 encePairwiseOnDemand]: 75/82 looper letters, 133 selfloop transitions, 15 changer transitions 0/183 dead transitions. [2024-11-10 22:30:27,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 183 transitions, 1634 flow [2024-11-10 22:30:27,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:30:27,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:30:27,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 294 transitions. [2024-11-10 22:30:27,068 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5975609756097561 [2024-11-10 22:30:27,068 INFO L175 Difference]: Start difference. First operand has 122 places, 125 transitions, 1058 flow. Second operand 6 states and 294 transitions. [2024-11-10 22:30:27,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 183 transitions, 1634 flow [2024-11-10 22:30:27,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 183 transitions, 1626 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:30:27,776 INFO L231 Difference]: Finished difference. Result has 125 places, 124 transitions, 1076 flow [2024-11-10 22:30:27,776 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=1046, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1076, PETRI_PLACES=125, PETRI_TRANSITIONS=124} [2024-11-10 22:30:27,776 INFO L277 CegarLoopForPetriNet]: 60 programPoint places, 65 predicate places. [2024-11-10 22:30:27,776 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 124 transitions, 1076 flow [2024-11-10 22:30:27,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.0) internal successors, (190), 5 states have internal predecessors, (190), 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) [2024-11-10 22:30:27,777 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:30:27,777 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:30:27,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-10 22:30:27,777 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2024-11-10 22:30:27,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:30:27,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1203934228, now seen corresponding path program 1 times [2024-11-10 22:30:27,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:30:27,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696975568] [2024-11-10 22:30:27,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:30:27,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:30:27,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:30:27,806 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 22:30:27,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:30:27,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696975568] [2024-11-10 22:30:27,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696975568] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:30:27,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117503273] [2024-11-10 22:30:27,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:30:27,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:30:27,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:30:27,808 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) [2024-11-10 22:30:27,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-10 22:30:27,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:30:27,972 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 22:30:27,973 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:30:28,006 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 22:30:28,006 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:30:28,026 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 22:30:28,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117503273] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:30:28,026 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:30:28,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-10 22:30:28,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419508122] [2024-11-10 22:30:28,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:30:28,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 22:30:28,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:30:28,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 22:30:28,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-11-10 22:30:28,052 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 82 [2024-11-10 22:30:28,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 124 transitions, 1076 flow. Second operand has 10 states, 10 states have (on average 36.7) internal successors, (367), 10 states have internal predecessors, (367), 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) [2024-11-10 22:30:28,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:30:28,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 82 [2024-11-10 22:30:28,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:30:28,401 INFO L124 PetriNetUnfolderBase]: 2883/6033 cut-off events. [2024-11-10 22:30:28,402 INFO L125 PetriNetUnfolderBase]: For 19401/19838 co-relation queries the response was YES. [2024-11-10 22:30:28,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17696 conditions, 6033 events. 2883/6033 cut-off events. For 19401/19838 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 52155 event pairs, 847 based on Foata normal form. 598/6566 useless extension candidates. Maximal degree in co-relation 17668. Up to 2416 conditions per place. [2024-11-10 22:30:28,427 INFO L140 encePairwiseOnDemand]: 78/82 looper letters, 162 selfloop transitions, 5 changer transitions 0/196 dead transitions. [2024-11-10 22:30:28,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 196 transitions, 2314 flow [2024-11-10 22:30:28,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 22:30:28,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 22:30:28,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 284 transitions. [2024-11-10 22:30:28,428 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49477351916376305 [2024-11-10 22:30:28,428 INFO L175 Difference]: Start difference. First operand has 125 places, 124 transitions, 1076 flow. Second operand 7 states and 284 transitions. [2024-11-10 22:30:28,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 196 transitions, 2314 flow [2024-11-10 22:30:28,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 196 transitions, 2295 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 22:30:28,456 INFO L231 Difference]: Finished difference. Result has 111 places, 106 transitions, 1018 flow [2024-11-10 22:30:28,456 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=1008, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1018, PETRI_PLACES=111, PETRI_TRANSITIONS=106} [2024-11-10 22:30:28,456 INFO L277 CegarLoopForPetriNet]: 60 programPoint places, 51 predicate places. [2024-11-10 22:30:28,457 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 106 transitions, 1018 flow [2024-11-10 22:30:28,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 36.7) internal successors, (367), 10 states have internal predecessors, (367), 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) [2024-11-10 22:30:28,457 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:30:28,457 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:30:28,468 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-10 22:30:28,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:30:28,658 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2024-11-10 22:30:28,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:30:28,658 INFO L85 PathProgramCache]: Analyzing trace with hash -2093519432, now seen corresponding path program 1 times [2024-11-10 22:30:28,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:30:28,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703098405] [2024-11-10 22:30:28,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:30:28,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:30:28,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:30:28,663 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 22:30:28,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:30:28,668 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 22:30:28,669 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 22:30:28,669 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (27 of 28 remaining) [2024-11-10 22:30:28,669 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 28 remaining) [2024-11-10 22:30:28,669 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 28 remaining) [2024-11-10 22:30:28,669 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 28 remaining) [2024-11-10 22:30:28,669 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 28 remaining) [2024-11-10 22:30:28,669 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 28 remaining) [2024-11-10 22:30:28,669 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 28 remaining) [2024-11-10 22:30:28,669 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 28 remaining) [2024-11-10 22:30:28,669 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 28 remaining) [2024-11-10 22:30:28,669 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 28 remaining) [2024-11-10 22:30:28,669 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 28 remaining) [2024-11-10 22:30:28,669 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 28 remaining) [2024-11-10 22:30:28,669 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 28 remaining) [2024-11-10 22:30:28,669 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 28 remaining) [2024-11-10 22:30:28,669 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 28 remaining) [2024-11-10 22:30:28,669 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 28 remaining) [2024-11-10 22:30:28,669 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 28 remaining) [2024-11-10 22:30:28,669 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 28 remaining) [2024-11-10 22:30:28,669 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 28 remaining) [2024-11-10 22:30:28,670 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 28 remaining) [2024-11-10 22:30:28,670 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 28 remaining) [2024-11-10 22:30:28,670 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 28 remaining) [2024-11-10 22:30:28,670 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 28 remaining) [2024-11-10 22:30:28,670 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 28 remaining) [2024-11-10 22:30:28,670 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 28 remaining) [2024-11-10 22:30:28,670 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 28 remaining) [2024-11-10 22:30:28,670 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 28 remaining) [2024-11-10 22:30:28,670 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 28 remaining) [2024-11-10 22:30:28,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-10 22:30:28,670 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:30:28,670 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 22:30:28,670 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-10 22:30:28,690 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 22:30:28,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 113 places, 104 transitions, 264 flow [2024-11-10 22:30:28,699 INFO L124 PetriNetUnfolderBase]: 15/156 cut-off events. [2024-11-10 22:30:28,699 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-10 22:30:28,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189 conditions, 156 events. 15/156 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 495 event pairs, 0 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 180. Up to 10 conditions per place. [2024-11-10 22:30:28,699 INFO L82 GeneralOperation]: Start removeDead. Operand has 113 places, 104 transitions, 264 flow [2024-11-10 22:30:28,700 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 61 transitions, 153 flow [2024-11-10 22:30:28,700 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 22:30:28,700 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;@20b93f9c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 22:30:28,700 INFO L334 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2024-11-10 22:30:28,701 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 22:30:28,702 INFO L124 PetriNetUnfolderBase]: 1/15 cut-off events. [2024-11-10 22:30:28,702 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 22:30:28,702 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:30:28,702 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:30:28,702 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 31 more)] === [2024-11-10 22:30:28,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:30:28,702 INFO L85 PathProgramCache]: Analyzing trace with hash 941622685, now seen corresponding path program 1 times [2024-11-10 22:30:28,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:30:28,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473692332] [2024-11-10 22:30:28,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:30:28,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:30:28,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:30:28,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:30:28,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:30:28,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473692332] [2024-11-10 22:30:28,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473692332] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:30:28,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:30:28,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:30:28,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680619639] [2024-11-10 22:30:28,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:30:28,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:30:28,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:30:28,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:30:28,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 22:30:28,751 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 104 [2024-11-10 22:30:28,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 61 transitions, 153 flow. Second operand has 5 states, 5 states have (on average 47.2) internal successors, (236), 5 states have internal predecessors, (236), 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) [2024-11-10 22:30:28,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:30:28,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 104 [2024-11-10 22:30:28,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:30:31,312 INFO L124 PetriNetUnfolderBase]: 39926/54634 cut-off events. [2024-11-10 22:30:31,312 INFO L125 PetriNetUnfolderBase]: For 2575/2575 co-relation queries the response was YES. [2024-11-10 22:30:31,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109853 conditions, 54634 events. 39926/54634 cut-off events. For 2575/2575 co-relation queries the response was YES. Maximal size of possible extension queue 2452. Compared 363466 event pairs, 7187 based on Foata normal form. 5467/57766 useless extension candidates. Maximal degree in co-relation 49669. Up to 21801 conditions per place. [2024-11-10 22:30:31,515 INFO L140 encePairwiseOnDemand]: 92/104 looper letters, 91 selfloop transitions, 11 changer transitions 0/129 dead transitions. [2024-11-10 22:30:31,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 129 transitions, 555 flow [2024-11-10 22:30:31,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:30:31,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:30:31,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 392 transitions. [2024-11-10 22:30:31,516 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6282051282051282 [2024-11-10 22:30:31,516 INFO L175 Difference]: Start difference. First operand has 70 places, 61 transitions, 153 flow. Second operand 6 states and 392 transitions. [2024-11-10 22:30:31,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 129 transitions, 555 flow [2024-11-10 22:30:31,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 129 transitions, 527 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-11-10 22:30:31,519 INFO L231 Difference]: Finished difference. Result has 77 places, 67 transitions, 223 flow [2024-11-10 22:30:31,519 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=223, PETRI_PLACES=77, PETRI_TRANSITIONS=67} [2024-11-10 22:30:31,519 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 7 predicate places. [2024-11-10 22:30:31,519 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 67 transitions, 223 flow [2024-11-10 22:30:31,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 47.2) internal successors, (236), 5 states have internal predecessors, (236), 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) [2024-11-10 22:30:31,520 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:30:31,520 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:30:31,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-10 22:30:31,520 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 31 more)] === [2024-11-10 22:30:31,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:30:31,520 INFO L85 PathProgramCache]: Analyzing trace with hash 941622465, now seen corresponding path program 1 times [2024-11-10 22:30:31,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:30:31,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452172847] [2024-11-10 22:30:31,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:30:31,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:30:31,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:30:31,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:30:31,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:30:31,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452172847] [2024-11-10 22:30:31,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452172847] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:30:31,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:30:31,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:30:31,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800576535] [2024-11-10 22:30:31,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:30:31,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:30:31,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:30:31,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:30:31,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:30:31,535 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 104 [2024-11-10 22:30:31,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 67 transitions, 223 flow. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 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) [2024-11-10 22:30:31,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:30:31,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 104 [2024-11-10 22:30:31,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:30:34,695 INFO L124 PetriNetUnfolderBase]: 31609/54145 cut-off events. [2024-11-10 22:30:34,696 INFO L125 PetriNetUnfolderBase]: For 26875/28963 co-relation queries the response was YES. [2024-11-10 22:30:34,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118399 conditions, 54145 events. 31609/54145 cut-off events. For 26875/28963 co-relation queries the response was YES. Maximal size of possible extension queue 2453. Compared 508808 event pairs, 25123 based on Foata normal form. 840/47825 useless extension candidates. Maximal degree in co-relation 65899. Up to 42282 conditions per place. [2024-11-10 22:30:34,929 INFO L140 encePairwiseOnDemand]: 99/104 looper letters, 43 selfloop transitions, 3 changer transitions 0/74 dead transitions. [2024-11-10 22:30:34,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 74 transitions, 335 flow [2024-11-10 22:30:34,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:30:34,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:30:34,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 199 transitions. [2024-11-10 22:30:34,931 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6378205128205128 [2024-11-10 22:30:34,931 INFO L175 Difference]: Start difference. First operand has 77 places, 67 transitions, 223 flow. Second operand 3 states and 199 transitions. [2024-11-10 22:30:34,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 74 transitions, 335 flow [2024-11-10 22:30:34,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 74 transitions, 334 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:30:34,951 INFO L231 Difference]: Finished difference. Result has 79 places, 69 transitions, 243 flow [2024-11-10 22:30:34,952 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=243, PETRI_PLACES=79, PETRI_TRANSITIONS=69} [2024-11-10 22:30:34,952 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 9 predicate places. [2024-11-10 22:30:34,952 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 69 transitions, 243 flow [2024-11-10 22:30:34,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 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) [2024-11-10 22:30:34,952 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:30:34,952 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:30:34,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-10 22:30:34,953 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 31 more)] === [2024-11-10 22:30:34,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:30:34,953 INFO L85 PathProgramCache]: Analyzing trace with hash -874467418, now seen corresponding path program 1 times [2024-11-10 22:30:34,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:30:34,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725591576] [2024-11-10 22:30:34,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:30:34,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:30:34,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:30:34,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:30:34,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:30:34,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725591576] [2024-11-10 22:30:34,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725591576] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:30:34,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:30:34,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:30:34,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491023759] [2024-11-10 22:30:34,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:30:34,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:30:34,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:30:34,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:30:34,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 22:30:34,999 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 104 [2024-11-10 22:30:34,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 69 transitions, 243 flow. Second operand has 5 states, 5 states have (on average 47.2) internal successors, (236), 5 states have internal predecessors, (236), 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) [2024-11-10 22:30:35,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:30:35,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 104 [2024-11-10 22:30:35,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand