./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label06.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label06.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash df2b5c022524eef310b1de6141625f90d464b51feae63f6fbead126ad9876e79 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-23 21:10:28,451 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-23 21:10:28,550 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-23 21:10:28,556 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-23 21:10:28,558 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-23 21:10:28,577 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-23 21:10:28,577 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-23 21:10:28,577 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-23 21:10:28,578 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-23 21:10:28,578 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-23 21:10:28,578 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-23 21:10:28,578 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-23 21:10:28,579 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-23 21:10:28,579 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-23 21:10:28,580 INFO L153 SettingsManager]: * Use SBE=true [2024-10-23 21:10:28,580 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-23 21:10:28,582 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-23 21:10:28,582 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-23 21:10:28,582 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-23 21:10:28,583 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-23 21:10:28,583 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-23 21:10:28,587 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-23 21:10:28,587 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-23 21:10:28,587 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-23 21:10:28,588 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-23 21:10:28,588 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-23 21:10:28,588 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-23 21:10:28,588 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-23 21:10:28,588 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-23 21:10:28,589 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-23 21:10:28,589 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-23 21:10:28,589 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-23 21:10:28,589 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 21:10:28,589 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-23 21:10:28,589 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-23 21:10:28,589 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-23 21:10:28,589 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-23 21:10:28,590 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-23 21:10:28,590 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-23 21:10:28,590 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-23 21:10:28,590 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-23 21:10:28,591 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-23 21:10:28,591 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> df2b5c022524eef310b1de6141625f90d464b51feae63f6fbead126ad9876e79 [2024-10-23 21:10:28,808 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-23 21:10:28,831 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-23 21:10:28,833 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-23 21:10:28,834 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-23 21:10:28,835 INFO L274 PluginConnector]: CDTParser initialized [2024-10-23 21:10:28,835 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label06.c [2024-10-23 21:10:30,184 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-23 21:10:30,575 INFO L384 CDTParser]: Found 1 translation units. [2024-10-23 21:10:30,576 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label06.c [2024-10-23 21:10:30,605 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e8bd0ab8/1440c3fbccf044d79d1a43a65633e616/FLAG5af5cb1d4 [2024-10-23 21:10:30,624 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e8bd0ab8/1440c3fbccf044d79d1a43a65633e616 [2024-10-23 21:10:30,627 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-23 21:10:30,628 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-23 21:10:30,629 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-23 21:10:30,629 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-23 21:10:30,633 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-23 21:10:30,634 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:10:30" (1/1) ... [2024-10-23 21:10:30,635 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56ef9ef1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:10:30, skipping insertion in model container [2024-10-23 21:10:30,635 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:10:30" (1/1) ... [2024-10-23 21:10:30,720 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-23 21:10:30,943 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label06.c[3786,3799] [2024-10-23 21:10:31,662 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 21:10:31,670 INFO L200 MainTranslator]: Completed pre-run [2024-10-23 21:10:31,689 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label06.c[3786,3799] [2024-10-23 21:10:32,029 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 21:10:32,055 INFO L204 MainTranslator]: Completed translation [2024-10-23 21:10:32,055 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:10:32 WrapperNode [2024-10-23 21:10:32,055 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-23 21:10:32,056 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-23 21:10:32,056 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-23 21:10:32,057 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-23 21:10:32,062 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:10:32" (1/1) ... [2024-10-23 21:10:32,110 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:10:32" (1/1) ... [2024-10-23 21:10:32,558 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5587 [2024-10-23 21:10:32,558 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-23 21:10:32,560 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-23 21:10:32,560 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-23 21:10:32,560 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-23 21:10:32,568 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:10:32" (1/1) ... [2024-10-23 21:10:32,569 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:10:32" (1/1) ... [2024-10-23 21:10:32,653 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:10:32" (1/1) ... [2024-10-23 21:10:32,826 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-23 21:10:32,827 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:10:32" (1/1) ... [2024-10-23 21:10:32,827 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:10:32" (1/1) ... [2024-10-23 21:10:32,969 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:10:32" (1/1) ... [2024-10-23 21:10:33,008 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:10:32" (1/1) ... [2024-10-23 21:10:33,034 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:10:32" (1/1) ... [2024-10-23 21:10:33,054 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:10:32" (1/1) ... [2024-10-23 21:10:33,108 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-23 21:10:33,110 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-23 21:10:33,110 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-23 21:10:33,110 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-23 21:10:33,111 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:10:32" (1/1) ... [2024-10-23 21:10:33,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 21:10:33,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:10:33,136 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-23 21:10:33,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-23 21:10:33,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-23 21:10:33,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-23 21:10:33,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-23 21:10:33,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-23 21:10:33,235 INFO L238 CfgBuilder]: Building ICFG [2024-10-23 21:10:33,236 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-23 21:10:37,491 INFO L? ?]: Removed 738 outVars from TransFormulas that were not future-live. [2024-10-23 21:10:37,492 INFO L287 CfgBuilder]: Performing block encoding [2024-10-23 21:10:37,547 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-23 21:10:37,547 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-23 21:10:37,547 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:10:37 BoogieIcfgContainer [2024-10-23 21:10:37,548 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-23 21:10:37,549 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-23 21:10:37,550 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-23 21:10:37,552 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-23 21:10:37,553 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:10:30" (1/3) ... [2024-10-23 21:10:37,553 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b30c2c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:10:37, skipping insertion in model container [2024-10-23 21:10:37,553 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:10:32" (2/3) ... [2024-10-23 21:10:37,554 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b30c2c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:10:37, skipping insertion in model container [2024-10-23 21:10:37,554 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:10:37" (3/3) ... [2024-10-23 21:10:37,555 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label06.c [2024-10-23 21:10:37,569 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-23 21:10:37,570 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-23 21:10:37,662 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-23 21:10:37,667 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;@46f3f62f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-23 21:10:37,667 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-23 21:10:37,673 INFO L276 IsEmpty]: Start isEmpty. Operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:10:37,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-10-23 21:10:37,677 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:10:37,678 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:10:37,678 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:10:37,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:10:37,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1188912401, now seen corresponding path program 1 times [2024-10-23 21:10:37,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:10:37,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423950252] [2024-10-23 21:10:37,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:10:37,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:10:37,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:10:37,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:10:37,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:10:37,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423950252] [2024-10-23 21:10:37,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423950252] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:10:37,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:10:37,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:10:37,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450097870] [2024-10-23 21:10:37,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:10:37,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-23 21:10:37,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:10:37,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-23 21:10:37,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 21:10:37,820 INFO L87 Difference]: Start difference. First operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 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) Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:10:37,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:10:37,906 INFO L93 Difference]: Finished difference Result 2071 states and 3881 transitions. [2024-10-23 21:10:37,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-23 21:10:37,910 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 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) Word has length 24 [2024-10-23 21:10:37,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:10:37,925 INFO L225 Difference]: With dead ends: 2071 [2024-10-23 21:10:37,925 INFO L226 Difference]: Without dead ends: 1034 [2024-10-23 21:10:37,932 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 21:10:37,936 INFO L432 NwaCegarLoop]: 1876 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1876 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-23 21:10:37,937 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1876 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-23 21:10:37,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2024-10-23 21:10:38,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 1034. [2024-10-23 21:10:38,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1034 states, 1033 states have (on average 1.8160696999031947) internal successors, (1876), 1033 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:10:38,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1876 transitions. [2024-10-23 21:10:38,013 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1876 transitions. Word has length 24 [2024-10-23 21:10:38,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:10:38,013 INFO L471 AbstractCegarLoop]: Abstraction has 1034 states and 1876 transitions. [2024-10-23 21:10:38,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:10:38,013 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1876 transitions. [2024-10-23 21:10:38,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-10-23 21:10:38,014 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:10:38,014 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:10:38,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-23 21:10:38,015 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:10:38,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:10:38,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1416385584, now seen corresponding path program 1 times [2024-10-23 21:10:38,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:10:38,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742342978] [2024-10-23 21:10:38,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:10:38,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:10:38,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:10:38,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:10:38,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:10:38,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742342978] [2024-10-23 21:10:38,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742342978] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:10:38,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:10:38,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:10:38,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496455525] [2024-10-23 21:10:38,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:10:38,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:10:38,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:10:38,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:10:38,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:10:38,135 INFO L87 Difference]: Start difference. First operand 1034 states and 1876 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:10:41,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:10:41,626 INFO L93 Difference]: Finished difference Result 2976 states and 5471 transitions. [2024-10-23 21:10:41,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:10:41,627 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 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) Word has length 24 [2024-10-23 21:10:41,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:10:41,633 INFO L225 Difference]: With dead ends: 2976 [2024-10-23 21:10:41,633 INFO L226 Difference]: Without dead ends: 1943 [2024-10-23 21:10:41,634 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:10:41,636 INFO L432 NwaCegarLoop]: 404 mSDtfsCounter, 930 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 3050 mSolverCounterSat, 532 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 930 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 3582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 532 IncrementalHoareTripleChecker+Valid, 3050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-10-23 21:10:41,637 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [930 Valid, 538 Invalid, 3582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [532 Valid, 3050 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-10-23 21:10:41,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1943 states. [2024-10-23 21:10:41,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1943 to 1872. [2024-10-23 21:10:41,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1872 states, 1871 states have (on average 1.7397113842864778) internal successors, (3255), 1871 states have internal predecessors, (3255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:10:41,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1872 states to 1872 states and 3255 transitions. [2024-10-23 21:10:41,670 INFO L78 Accepts]: Start accepts. Automaton has 1872 states and 3255 transitions. Word has length 24 [2024-10-23 21:10:41,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:10:41,670 INFO L471 AbstractCegarLoop]: Abstraction has 1872 states and 3255 transitions. [2024-10-23 21:10:41,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:10:41,671 INFO L276 IsEmpty]: Start isEmpty. Operand 1872 states and 3255 transitions. [2024-10-23 21:10:41,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-10-23 21:10:41,674 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:10:41,674 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:10:41,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-23 21:10:41,675 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:10:41,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:10:41,677 INFO L85 PathProgramCache]: Analyzing trace with hash -780158661, now seen corresponding path program 1 times [2024-10-23 21:10:41,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:10:41,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244110519] [2024-10-23 21:10:41,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:10:41,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:10:41,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:10:41,919 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:10:41,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:10:41,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244110519] [2024-10-23 21:10:41,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244110519] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:10:41,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:10:41,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:10:41,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036654720] [2024-10-23 21:10:41,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:10:41,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:10:41,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:10:41,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:10:41,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:10:41,921 INFO L87 Difference]: Start difference. First operand 1872 states and 3255 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:10:45,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:10:45,139 INFO L93 Difference]: Finished difference Result 5350 states and 9368 transitions. [2024-10-23 21:10:45,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:10:45,140 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 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) Word has length 89 [2024-10-23 21:10:45,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:10:45,150 INFO L225 Difference]: With dead ends: 5350 [2024-10-23 21:10:45,150 INFO L226 Difference]: Without dead ends: 3479 [2024-10-23 21:10:45,152 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:10:45,153 INFO L432 NwaCegarLoop]: 924 mSDtfsCounter, 884 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 2339 mSolverCounterSat, 878 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 1077 SdHoareTripleChecker+Invalid, 3217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 878 IncrementalHoareTripleChecker+Valid, 2339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-10-23 21:10:45,153 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 1077 Invalid, 3217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [878 Valid, 2339 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-10-23 21:10:45,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3479 states. [2024-10-23 21:10:45,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3479 to 3478. [2024-10-23 21:10:45,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3478 states, 3477 states have (on average 1.5188380788035662) internal successors, (5281), 3477 states have internal predecessors, (5281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:10:45,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3478 states to 3478 states and 5281 transitions. [2024-10-23 21:10:45,223 INFO L78 Accepts]: Start accepts. Automaton has 3478 states and 5281 transitions. Word has length 89 [2024-10-23 21:10:45,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:10:45,224 INFO L471 AbstractCegarLoop]: Abstraction has 3478 states and 5281 transitions. [2024-10-23 21:10:45,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:10:45,224 INFO L276 IsEmpty]: Start isEmpty. Operand 3478 states and 5281 transitions. [2024-10-23 21:10:45,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-23 21:10:45,225 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:10:45,226 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:10:45,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-23 21:10:45,226 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:10:45,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:10:45,227 INFO L85 PathProgramCache]: Analyzing trace with hash -2089709408, now seen corresponding path program 1 times [2024-10-23 21:10:45,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:10:45,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337041096] [2024-10-23 21:10:45,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:10:45,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:10:45,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:10:45,317 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:10:45,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:10:45,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337041096] [2024-10-23 21:10:45,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337041096] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:10:45,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:10:45,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:10:45,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745178971] [2024-10-23 21:10:45,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:10:45,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:10:45,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:10:45,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:10:45,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:10:45,319 INFO L87 Difference]: Start difference. First operand 3478 states and 5281 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:10:48,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:10:48,614 INFO L93 Difference]: Finished difference Result 10141 states and 15437 transitions. [2024-10-23 21:10:48,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:10:48,615 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 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) Word has length 91 [2024-10-23 21:10:48,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:10:48,636 INFO L225 Difference]: With dead ends: 10141 [2024-10-23 21:10:48,636 INFO L226 Difference]: Without dead ends: 6664 [2024-10-23 21:10:48,645 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:10:48,646 INFO L432 NwaCegarLoop]: 742 mSDtfsCounter, 976 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2554 mSolverCounterSat, 772 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 875 SdHoareTripleChecker+Invalid, 3326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 772 IncrementalHoareTripleChecker+Valid, 2554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-10-23 21:10:48,648 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [976 Valid, 875 Invalid, 3326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [772 Valid, 2554 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-10-23 21:10:48,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6664 states. [2024-10-23 21:10:48,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6664 to 6656. [2024-10-23 21:10:48,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6656 states, 6655 states have (on average 1.3729526671675432) internal successors, (9137), 6655 states have internal predecessors, (9137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:10:48,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6656 states to 6656 states and 9137 transitions. [2024-10-23 21:10:48,769 INFO L78 Accepts]: Start accepts. Automaton has 6656 states and 9137 transitions. Word has length 91 [2024-10-23 21:10:48,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:10:48,770 INFO L471 AbstractCegarLoop]: Abstraction has 6656 states and 9137 transitions. [2024-10-23 21:10:48,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:10:48,770 INFO L276 IsEmpty]: Start isEmpty. Operand 6656 states and 9137 transitions. [2024-10-23 21:10:48,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-10-23 21:10:48,774 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:10:48,774 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:10:48,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-23 21:10:48,775 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:10:48,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:10:48,775 INFO L85 PathProgramCache]: Analyzing trace with hash 363661455, now seen corresponding path program 1 times [2024-10-23 21:10:48,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:10:48,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133751808] [2024-10-23 21:10:48,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:10:48,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:10:48,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:10:48,927 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:10:48,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:10:48,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133751808] [2024-10-23 21:10:48,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133751808] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:10:48,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:10:48,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:10:48,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383569456] [2024-10-23 21:10:48,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:10:48,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:10:48,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:10:48,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:10:48,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:10:48,930 INFO L87 Difference]: Start difference. First operand 6656 states and 9137 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:10:51,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:10:51,710 INFO L93 Difference]: Finished difference Result 19636 states and 26968 transitions. [2024-10-23 21:10:51,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:10:51,711 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 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) Word has length 97 [2024-10-23 21:10:51,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:10:51,751 INFO L225 Difference]: With dead ends: 19636 [2024-10-23 21:10:51,754 INFO L226 Difference]: Without dead ends: 12981 [2024-10-23 21:10:51,772 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:10:51,773 INFO L432 NwaCegarLoop]: 1010 mSDtfsCounter, 791 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 2486 mSolverCounterSat, 792 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 791 SdHoareTripleChecker+Valid, 1161 SdHoareTripleChecker+Invalid, 3278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 792 IncrementalHoareTripleChecker+Valid, 2486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-10-23 21:10:51,773 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [791 Valid, 1161 Invalid, 3278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [792 Valid, 2486 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-10-23 21:10:51,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12981 states. [2024-10-23 21:10:52,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12981 to 12174. [2024-10-23 21:10:52,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12174 states, 12173 states have (on average 1.2529368274049124) internal successors, (15252), 12173 states have internal predecessors, (15252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:10:52,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12174 states to 12174 states and 15252 transitions. [2024-10-23 21:10:52,068 INFO L78 Accepts]: Start accepts. Automaton has 12174 states and 15252 transitions. Word has length 97 [2024-10-23 21:10:52,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:10:52,068 INFO L471 AbstractCegarLoop]: Abstraction has 12174 states and 15252 transitions. [2024-10-23 21:10:52,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:10:52,069 INFO L276 IsEmpty]: Start isEmpty. Operand 12174 states and 15252 transitions. [2024-10-23 21:10:52,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-10-23 21:10:52,072 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:10:52,073 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:10:52,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-23 21:10:52,073 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:10:52,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:10:52,073 INFO L85 PathProgramCache]: Analyzing trace with hash -566836361, now seen corresponding path program 1 times [2024-10-23 21:10:52,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:10:52,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374550574] [2024-10-23 21:10:52,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:10:52,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:10:52,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:10:52,185 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-23 21:10:52,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:10:52,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374550574] [2024-10-23 21:10:52,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374550574] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:10:52,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:10:52,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:10:52,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558960898] [2024-10-23 21:10:52,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:10:52,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:10:52,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:10:52,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:10:52,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:10:52,191 INFO L87 Difference]: Start difference. First operand 12174 states and 15252 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:10:55,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:10:55,497 INFO L93 Difference]: Finished difference Result 36202 states and 45330 transitions. [2024-10-23 21:10:55,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:10:55,498 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2024-10-23 21:10:55,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:10:55,531 INFO L225 Difference]: With dead ends: 36202 [2024-10-23 21:10:55,532 INFO L226 Difference]: Without dead ends: 24029 [2024-10-23 21:10:55,546 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:10:55,547 INFO L432 NwaCegarLoop]: 532 mSDtfsCounter, 914 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 2920 mSolverCounterSat, 531 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 914 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 3451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 531 IncrementalHoareTripleChecker+Valid, 2920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-10-23 21:10:55,548 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [914 Valid, 697 Invalid, 3451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [531 Valid, 2920 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-10-23 21:10:55,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24029 states. [2024-10-23 21:10:55,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24029 to 24022. [2024-10-23 21:10:55,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24022 states, 24021 states have (on average 1.21810082844178) internal successors, (29260), 24021 states have internal predecessors, (29260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:10:55,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24022 states to 24022 states and 29260 transitions. [2024-10-23 21:10:55,958 INFO L78 Accepts]: Start accepts. Automaton has 24022 states and 29260 transitions. Word has length 113 [2024-10-23 21:10:55,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:10:55,960 INFO L471 AbstractCegarLoop]: Abstraction has 24022 states and 29260 transitions. [2024-10-23 21:10:55,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:10:55,960 INFO L276 IsEmpty]: Start isEmpty. Operand 24022 states and 29260 transitions. [2024-10-23 21:10:55,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-10-23 21:10:55,961 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:10:55,961 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:10:55,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-23 21:10:55,961 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:10:55,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:10:55,962 INFO L85 PathProgramCache]: Analyzing trace with hash -2025474773, now seen corresponding path program 1 times [2024-10-23 21:10:55,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:10:55,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790959947] [2024-10-23 21:10:55,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:10:55,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:10:55,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:10:56,357 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:10:56,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:10:56,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790959947] [2024-10-23 21:10:56,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790959947] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:10:56,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:10:56,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:10:56,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782572938] [2024-10-23 21:10:56,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:10:56,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:10:56,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:10:56,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:10:56,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:10:56,359 INFO L87 Difference]: Start difference. First operand 24022 states and 29260 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:10:59,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:10:59,416 INFO L93 Difference]: Finished difference Result 42533 states and 52580 transitions. [2024-10-23 21:10:59,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:10:59,416 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 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) Word has length 140 [2024-10-23 21:10:59,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:10:59,443 INFO L225 Difference]: With dead ends: 42533 [2024-10-23 21:10:59,444 INFO L226 Difference]: Without dead ends: 24031 [2024-10-23 21:10:59,457 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:10:59,458 INFO L432 NwaCegarLoop]: 1025 mSDtfsCounter, 730 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 2714 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 1209 SdHoareTripleChecker+Invalid, 2718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-10-23 21:10:59,459 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 1209 Invalid, 2718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2714 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-10-23 21:10:59,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24031 states. [2024-10-23 21:10:59,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24031 to 24022. [2024-10-23 21:10:59,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24022 states, 24021 states have (on average 1.2166437700345532) internal successors, (29225), 24021 states have internal predecessors, (29225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:10:59,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24022 states to 24022 states and 29225 transitions. [2024-10-23 21:10:59,758 INFO L78 Accepts]: Start accepts. Automaton has 24022 states and 29225 transitions. Word has length 140 [2024-10-23 21:10:59,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:10:59,759 INFO L471 AbstractCegarLoop]: Abstraction has 24022 states and 29225 transitions. [2024-10-23 21:10:59,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:10:59,759 INFO L276 IsEmpty]: Start isEmpty. Operand 24022 states and 29225 transitions. [2024-10-23 21:10:59,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2024-10-23 21:10:59,761 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:10:59,761 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:10:59,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-23 21:10:59,762 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:10:59,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:10:59,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1055785391, now seen corresponding path program 1 times [2024-10-23 21:10:59,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:10:59,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910845214] [2024-10-23 21:10:59,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:10:59,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:10:59,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:10:59,877 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:10:59,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:10:59,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910845214] [2024-10-23 21:10:59,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910845214] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:10:59,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:10:59,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:10:59,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095372079] [2024-10-23 21:10:59,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:10:59,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:10:59,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:10:59,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:10:59,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:10:59,880 INFO L87 Difference]: Start difference. First operand 24022 states and 29225 transitions. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:03,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:11:03,097 INFO L93 Difference]: Finished difference Result 67708 states and 83084 transitions. [2024-10-23 21:11:03,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:11:03,098 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 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) Word has length 238 [2024-10-23 21:11:03,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:11:03,150 INFO L225 Difference]: With dead ends: 67708 [2024-10-23 21:11:03,151 INFO L226 Difference]: Without dead ends: 43687 [2024-10-23 21:11:03,304 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:11:03,305 INFO L432 NwaCegarLoop]: 1847 mSDtfsCounter, 841 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 2480 mSolverCounterSat, 807 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 1983 SdHoareTripleChecker+Invalid, 3287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 807 IncrementalHoareTripleChecker+Valid, 2480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-10-23 21:11:03,305 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 1983 Invalid, 3287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [807 Valid, 2480 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-10-23 21:11:03,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43687 states. [2024-10-23 21:11:03,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43687 to 42894. [2024-10-23 21:11:03,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42894 states, 42893 states have (on average 1.1763691045158884) internal successors, (50458), 42893 states have internal predecessors, (50458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:03,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42894 states to 42894 states and 50458 transitions. [2024-10-23 21:11:03,616 INFO L78 Accepts]: Start accepts. Automaton has 42894 states and 50458 transitions. Word has length 238 [2024-10-23 21:11:03,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:11:03,616 INFO L471 AbstractCegarLoop]: Abstraction has 42894 states and 50458 transitions. [2024-10-23 21:11:03,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:03,616 INFO L276 IsEmpty]: Start isEmpty. Operand 42894 states and 50458 transitions. [2024-10-23 21:11:03,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2024-10-23 21:11:03,623 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:11:03,623 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:11:03,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-23 21:11:03,623 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:11:03,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:11:03,624 INFO L85 PathProgramCache]: Analyzing trace with hash -294493016, now seen corresponding path program 1 times [2024-10-23 21:11:03,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:11:03,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937653897] [2024-10-23 21:11:03,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:11:03,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:11:03,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:11:04,387 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-10-23 21:11:04,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:11:04,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937653897] [2024-10-23 21:11:04,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937653897] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:11:04,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:11:04,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:11:04,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978773267] [2024-10-23 21:11:04,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:11:04,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:11:04,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:11:04,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:11:04,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:11:04,393 INFO L87 Difference]: Start difference. First operand 42894 states and 50458 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:07,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:11:07,449 INFO L93 Difference]: Finished difference Result 85000 states and 100118 transitions. [2024-10-23 21:11:07,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:11:07,453 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 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) Word has length 253 [2024-10-23 21:11:07,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:11:07,496 INFO L225 Difference]: With dead ends: 85000 [2024-10-23 21:11:07,496 INFO L226 Difference]: Without dead ends: 42894 [2024-10-23 21:11:07,528 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:11:07,528 INFO L432 NwaCegarLoop]: 1064 mSDtfsCounter, 700 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2504 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 1193 SdHoareTripleChecker+Invalid, 2508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-10-23 21:11:07,528 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 1193 Invalid, 2508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2504 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-10-23 21:11:07,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42894 states. [2024-10-23 21:11:07,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42894 to 42894. [2024-10-23 21:11:08,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42894 states, 42893 states have (on average 1.1762525353787332) internal successors, (50453), 42893 states have internal predecessors, (50453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:08,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42894 states to 42894 states and 50453 transitions. [2024-10-23 21:11:08,060 INFO L78 Accepts]: Start accepts. Automaton has 42894 states and 50453 transitions. Word has length 253 [2024-10-23 21:11:08,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:11:08,060 INFO L471 AbstractCegarLoop]: Abstraction has 42894 states and 50453 transitions. [2024-10-23 21:11:08,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:08,060 INFO L276 IsEmpty]: Start isEmpty. Operand 42894 states and 50453 transitions. [2024-10-23 21:11:08,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2024-10-23 21:11:08,063 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:11:08,063 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:11:08,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-23 21:11:08,064 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:11:08,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:11:08,064 INFO L85 PathProgramCache]: Analyzing trace with hash 838600543, now seen corresponding path program 1 times [2024-10-23 21:11:08,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:11:08,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671160409] [2024-10-23 21:11:08,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:11:08,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:11:08,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:11:08,321 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 250 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-10-23 21:11:08,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:11:08,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671160409] [2024-10-23 21:11:08,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671160409] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:11:08,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:11:08,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:11:08,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833502693] [2024-10-23 21:11:08,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:11:08,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:11:08,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:11:08,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:11:08,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:11:08,323 INFO L87 Difference]: Start difference. First operand 42894 states and 50453 transitions. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:12,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:11:12,102 INFO L93 Difference]: Finished difference Result 105472 states and 126162 transitions. [2024-10-23 21:11:12,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:11:12,103 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 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) Word has length 260 [2024-10-23 21:11:12,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:11:12,167 INFO L225 Difference]: With dead ends: 105472 [2024-10-23 21:11:12,167 INFO L226 Difference]: Without dead ends: 63366 [2024-10-23 21:11:12,177 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:11:12,177 INFO L432 NwaCegarLoop]: 811 mSDtfsCounter, 882 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2387 mSolverCounterSat, 900 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 3287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 900 IncrementalHoareTripleChecker+Valid, 2387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-10-23 21:11:12,178 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [882 Valid, 928 Invalid, 3287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [900 Valid, 2387 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-10-23 21:11:12,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63366 states. [2024-10-23 21:11:12,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63366 to 60995. [2024-10-23 21:11:12,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60995 states, 60994 states have (on average 1.165950749254025) internal successors, (71116), 60994 states have internal predecessors, (71116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:13,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60995 states to 60995 states and 71116 transitions. [2024-10-23 21:11:13,037 INFO L78 Accepts]: Start accepts. Automaton has 60995 states and 71116 transitions. Word has length 260 [2024-10-23 21:11:13,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:11:13,037 INFO L471 AbstractCegarLoop]: Abstraction has 60995 states and 71116 transitions. [2024-10-23 21:11:13,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:13,038 INFO L276 IsEmpty]: Start isEmpty. Operand 60995 states and 71116 transitions. [2024-10-23 21:11:13,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2024-10-23 21:11:13,044 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:11:13,044 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:11:13,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-23 21:11:13,045 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:11:13,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:11:13,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1179560973, now seen corresponding path program 1 times [2024-10-23 21:11:13,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:11:13,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670616836] [2024-10-23 21:11:13,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:11:13,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:11:13,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:11:14,088 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 45 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:11:14,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:11:14,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670616836] [2024-10-23 21:11:14,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670616836] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:11:14,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571110321] [2024-10-23 21:11:14,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:11:14,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:11:14,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:11:14,093 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 21:11:14,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-23 21:11:14,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:11:14,204 INFO L255 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 21:11:14,213 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:11:14,274 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-10-23 21:11:14,274 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:11:14,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571110321] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:11:14,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:11:14,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2024-10-23 21:11:14,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897680974] [2024-10-23 21:11:14,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:11:14,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:11:14,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:11:14,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:11:14,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-23 21:11:14,276 INFO L87 Difference]: Start difference. First operand 60995 states and 71116 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:17,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:11:17,272 INFO L93 Difference]: Finished difference Result 121200 states and 141438 transitions. [2024-10-23 21:11:17,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:11:17,272 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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) Word has length 265 [2024-10-23 21:11:17,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:11:17,334 INFO L225 Difference]: With dead ends: 121200 [2024-10-23 21:11:17,334 INFO L226 Difference]: Without dead ends: 60993 [2024-10-23 21:11:17,359 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-23 21:11:17,360 INFO L432 NwaCegarLoop]: 1356 mSDtfsCounter, 1182 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 2470 mSolverCounterSat, 446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1182 SdHoareTripleChecker+Valid, 1436 SdHoareTripleChecker+Invalid, 2916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 446 IncrementalHoareTripleChecker+Valid, 2470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-10-23 21:11:17,360 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1182 Valid, 1436 Invalid, 2916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [446 Valid, 2470 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-10-23 21:11:17,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60993 states. [2024-10-23 21:11:17,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60993 to 60992. [2024-10-23 21:11:18,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60992 states, 60991 states have (on average 1.1283959928514042) internal successors, (68822), 60991 states have internal predecessors, (68822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:18,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60992 states to 60992 states and 68822 transitions. [2024-10-23 21:11:18,125 INFO L78 Accepts]: Start accepts. Automaton has 60992 states and 68822 transitions. Word has length 265 [2024-10-23 21:11:18,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:11:18,126 INFO L471 AbstractCegarLoop]: Abstraction has 60992 states and 68822 transitions. [2024-10-23 21:11:18,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:18,126 INFO L276 IsEmpty]: Start isEmpty. Operand 60992 states and 68822 transitions. [2024-10-23 21:11:18,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2024-10-23 21:11:18,130 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:11:18,131 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:11:18,145 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-23 21:11:18,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-23 21:11:18,335 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:11:18,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:11:18,335 INFO L85 PathProgramCache]: Analyzing trace with hash -388182378, now seen corresponding path program 1 times [2024-10-23 21:11:18,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:11:18,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309280182] [2024-10-23 21:11:18,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:11:18,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:11:18,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:11:19,587 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 23 proven. 47 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2024-10-23 21:11:19,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:11:19,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309280182] [2024-10-23 21:11:19,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309280182] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:11:19,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337514214] [2024-10-23 21:11:19,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:11:19,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:11:19,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:11:19,593 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 21:11:19,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-23 21:11:19,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:11:19,704 INFO L255 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 21:11:19,709 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:11:19,748 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-10-23 21:11:19,749 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:11:19,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337514214] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:11:19,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:11:19,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-10-23 21:11:19,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603855783] [2024-10-23 21:11:19,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:11:19,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:11:19,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:11:19,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:11:19,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-23 21:11:19,751 INFO L87 Difference]: Start difference. First operand 60992 states and 68822 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:22,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:11:22,427 INFO L93 Difference]: Finished difference Result 121187 states and 136843 transitions. [2024-10-23 21:11:22,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:11:22,428 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 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) Word has length 315 [2024-10-23 21:11:22,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:11:22,504 INFO L225 Difference]: With dead ends: 121187 [2024-10-23 21:11:22,504 INFO L226 Difference]: Without dead ends: 60983 [2024-10-23 21:11:22,535 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-23 21:11:22,536 INFO L432 NwaCegarLoop]: 687 mSDtfsCounter, 1114 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 2394 mSolverCounterSat, 528 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1114 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 2922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 528 IncrementalHoareTripleChecker+Valid, 2394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-10-23 21:11:22,536 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1114 Valid, 819 Invalid, 2922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [528 Valid, 2394 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-10-23 21:11:22,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60983 states. [2024-10-23 21:11:23,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60983 to 60982. [2024-10-23 21:11:23,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60982 states, 60981 states have (on average 1.0927174037815057) internal successors, (66635), 60981 states have internal predecessors, (66635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:23,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60982 states to 60982 states and 66635 transitions. [2024-10-23 21:11:23,389 INFO L78 Accepts]: Start accepts. Automaton has 60982 states and 66635 transitions. Word has length 315 [2024-10-23 21:11:23,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:11:23,394 INFO L471 AbstractCegarLoop]: Abstraction has 60982 states and 66635 transitions. [2024-10-23 21:11:23,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:23,395 INFO L276 IsEmpty]: Start isEmpty. Operand 60982 states and 66635 transitions. [2024-10-23 21:11:23,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2024-10-23 21:11:23,405 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:11:23,408 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:11:23,434 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-23 21:11:23,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-23 21:11:23,609 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:11:23,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:11:23,610 INFO L85 PathProgramCache]: Analyzing trace with hash -149077708, now seen corresponding path program 1 times [2024-10-23 21:11:23,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:11:23,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520267155] [2024-10-23 21:11:23,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:11:23,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:11:23,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:11:23,959 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 445 trivial. 0 not checked. [2024-10-23 21:11:23,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:11:23,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520267155] [2024-10-23 21:11:23,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520267155] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:11:23,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:11:23,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:11:23,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048501463] [2024-10-23 21:11:23,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:11:23,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:11:23,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:11:23,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:11:23,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:11:23,962 INFO L87 Difference]: Start difference. First operand 60982 states and 66635 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:27,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:11:27,811 INFO L93 Difference]: Finished difference Result 151202 states and 165613 transitions. [2024-10-23 21:11:27,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:11:27,812 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 353 [2024-10-23 21:11:27,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:11:27,907 INFO L225 Difference]: With dead ends: 151202 [2024-10-23 21:11:27,908 INFO L226 Difference]: Without dead ends: 91008 [2024-10-23 21:11:27,923 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:11:27,924 INFO L432 NwaCegarLoop]: 456 mSDtfsCounter, 970 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 3089 mSolverCounterSat, 635 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 970 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 3724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 635 IncrementalHoareTripleChecker+Valid, 3089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-10-23 21:11:27,924 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [970 Valid, 558 Invalid, 3724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [635 Valid, 3089 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-10-23 21:11:27,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91008 states. [2024-10-23 21:11:28,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91008 to 87765. [2024-10-23 21:11:28,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87765 states, 87764 states have (on average 1.09688482749191) internal successors, (96267), 87764 states have internal predecessors, (96267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:28,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87765 states to 87765 states and 96267 transitions. [2024-10-23 21:11:28,741 INFO L78 Accepts]: Start accepts. Automaton has 87765 states and 96267 transitions. Word has length 353 [2024-10-23 21:11:28,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:11:28,742 INFO L471 AbstractCegarLoop]: Abstraction has 87765 states and 96267 transitions. [2024-10-23 21:11:28,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:28,742 INFO L276 IsEmpty]: Start isEmpty. Operand 87765 states and 96267 transitions. [2024-10-23 21:11:28,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2024-10-23 21:11:28,749 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:11:28,750 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:11:28,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-23 21:11:28,750 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:11:28,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:11:28,750 INFO L85 PathProgramCache]: Analyzing trace with hash 589637002, now seen corresponding path program 1 times [2024-10-23 21:11:28,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:11:28,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137608381] [2024-10-23 21:11:28,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:11:28,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:11:28,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:11:29,141 INFO L134 CoverageAnalysis]: Checked inductivity of 838 backedges. 405 proven. 0 refuted. 0 times theorem prover too weak. 433 trivial. 0 not checked. [2024-10-23 21:11:29,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:11:29,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137608381] [2024-10-23 21:11:29,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137608381] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:11:29,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:11:29,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:11:29,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815143307] [2024-10-23 21:11:29,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:11:29,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:11:29,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:11:29,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:11:29,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:11:29,148 INFO L87 Difference]: Start difference. First operand 87765 states and 96267 transitions. Second operand has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:32,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:11:32,829 INFO L93 Difference]: Finished difference Result 203086 states and 224427 transitions. [2024-10-23 21:11:32,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:11:32,830 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 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) Word has length 427 [2024-10-23 21:11:32,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:11:32,967 INFO L225 Difference]: With dead ends: 203086 [2024-10-23 21:11:32,968 INFO L226 Difference]: Without dead ends: 116109 [2024-10-23 21:11:33,004 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:11:33,004 INFO L432 NwaCegarLoop]: 680 mSDtfsCounter, 952 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 2384 mSolverCounterSat, 986 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 952 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 3370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 986 IncrementalHoareTripleChecker+Valid, 2384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-10-23 21:11:33,005 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [952 Valid, 760 Invalid, 3370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [986 Valid, 2384 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-10-23 21:11:33,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116109 states. [2024-10-23 21:11:34,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116109 to 114520. [2024-10-23 21:11:34,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114520 states, 114519 states have (on average 1.09937215658537) internal successors, (125899), 114519 states have internal predecessors, (125899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:34,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114520 states to 114520 states and 125899 transitions. [2024-10-23 21:11:34,576 INFO L78 Accepts]: Start accepts. Automaton has 114520 states and 125899 transitions. Word has length 427 [2024-10-23 21:11:34,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:11:34,577 INFO L471 AbstractCegarLoop]: Abstraction has 114520 states and 125899 transitions. [2024-10-23 21:11:34,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:34,577 INFO L276 IsEmpty]: Start isEmpty. Operand 114520 states and 125899 transitions. [2024-10-23 21:11:34,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2024-10-23 21:11:34,601 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:11:34,601 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:11:34,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-23 21:11:34,602 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:11:34,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:11:34,602 INFO L85 PathProgramCache]: Analyzing trace with hash -626182996, now seen corresponding path program 1 times [2024-10-23 21:11:34,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:11:34,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383585661] [2024-10-23 21:11:34,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:11:34,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:11:34,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:11:35,987 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 286 proven. 110 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-10-23 21:11:35,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:11:35,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383585661] [2024-10-23 21:11:35,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383585661] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:11:35,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033002406] [2024-10-23 21:11:35,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:11:35,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:11:35,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:11:35,989 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 21:11:35,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-23 21:11:36,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:11:36,152 INFO L255 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 21:11:36,158 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:11:36,216 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2024-10-23 21:11:36,217 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:11:36,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033002406] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:11:36,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:11:36,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-10-23 21:11:36,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769607832] [2024-10-23 21:11:36,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:11:36,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:11:36,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:11:36,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:11:36,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-23 21:11:36,219 INFO L87 Difference]: Start difference. First operand 114520 states and 125899 transitions. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:39,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:11:39,327 INFO L93 Difference]: Finished difference Result 229829 states and 252597 transitions. [2024-10-23 21:11:39,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:11:39,328 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 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) Word has length 440 [2024-10-23 21:11:39,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:11:39,473 INFO L225 Difference]: With dead ends: 229829 [2024-10-23 21:11:39,473 INFO L226 Difference]: Without dead ends: 116097 [2024-10-23 21:11:39,520 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 439 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-23 21:11:39,520 INFO L432 NwaCegarLoop]: 1411 mSDtfsCounter, 1013 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 2493 mSolverCounterSat, 587 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1013 SdHoareTripleChecker+Valid, 1498 SdHoareTripleChecker+Invalid, 3080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 587 IncrementalHoareTripleChecker+Valid, 2493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-10-23 21:11:39,521 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1013 Valid, 1498 Invalid, 3080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [587 Valid, 2493 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-10-23 21:11:39,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116097 states. [2024-10-23 21:11:40,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116097 to 114511. [2024-10-23 21:11:40,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114511 states, 114510 states have (on average 1.0736616889354642) internal successors, (122945), 114510 states have internal predecessors, (122945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:40,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114511 states to 114511 states and 122945 transitions. [2024-10-23 21:11:40,633 INFO L78 Accepts]: Start accepts. Automaton has 114511 states and 122945 transitions. Word has length 440 [2024-10-23 21:11:40,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:11:40,633 INFO L471 AbstractCegarLoop]: Abstraction has 114511 states and 122945 transitions. [2024-10-23 21:11:40,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:40,634 INFO L276 IsEmpty]: Start isEmpty. Operand 114511 states and 122945 transitions. [2024-10-23 21:11:40,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2024-10-23 21:11:40,661 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:11:40,661 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:11:40,676 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-23 21:11:40,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:11:40,862 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:11:40,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:11:40,866 INFO L85 PathProgramCache]: Analyzing trace with hash -2085442127, now seen corresponding path program 1 times [2024-10-23 21:11:40,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:11:40,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785972618] [2024-10-23 21:11:40,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:11:40,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:11:40,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:11:42,645 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 283 proven. 113 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-10-23 21:11:42,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:11:42,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785972618] [2024-10-23 21:11:42,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785972618] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:11:42,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199362947] [2024-10-23 21:11:42,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:11:42,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:11:42,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:11:42,649 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 21:11:42,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-23 21:11:42,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:11:42,789 INFO L255 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-23 21:11:42,795 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:11:43,362 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 283 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-10-23 21:11:43,362 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:11:43,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199362947] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:11:43,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:11:43,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2024-10-23 21:11:43,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193303167] [2024-10-23 21:11:43,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:11:43,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:11:43,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:11:43,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:11:43,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-10-23 21:11:43,364 INFO L87 Difference]: Start difference. First operand 114511 states and 122945 transitions. Second operand has 3 states, 3 states have (on average 127.0) internal successors, (381), 2 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:46,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:11:46,211 INFO L93 Difference]: Finished difference Result 219580 states and 236215 transitions. [2024-10-23 21:11:46,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:11:46,212 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 2 states have internal predecessors, (381), 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) Word has length 515 [2024-10-23 21:11:46,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:11:46,336 INFO L225 Difference]: With dead ends: 219580 [2024-10-23 21:11:46,336 INFO L226 Difference]: Without dead ends: 117665 [2024-10-23 21:11:46,357 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 521 GetRequests, 514 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-10-23 21:11:46,358 INFO L432 NwaCegarLoop]: 1017 mSDtfsCounter, 683 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 2449 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 683 SdHoareTripleChecker+Valid, 1151 SdHoareTripleChecker+Invalid, 2562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 2449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-10-23 21:11:46,359 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [683 Valid, 1151 Invalid, 2562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 2449 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-10-23 21:11:46,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117665 states. [2024-10-23 21:11:47,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117665 to 115297. [2024-10-23 21:11:47,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115297 states, 115296 states have (on average 1.0675912434082708) internal successors, (123089), 115296 states have internal predecessors, (123089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:47,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115297 states to 115297 states and 123089 transitions. [2024-10-23 21:11:47,590 INFO L78 Accepts]: Start accepts. Automaton has 115297 states and 123089 transitions. Word has length 515 [2024-10-23 21:11:47,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:11:47,590 INFO L471 AbstractCegarLoop]: Abstraction has 115297 states and 123089 transitions. [2024-10-23 21:11:47,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 2 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:47,591 INFO L276 IsEmpty]: Start isEmpty. Operand 115297 states and 123089 transitions. [2024-10-23 21:11:47,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 567 [2024-10-23 21:11:47,606 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:11:47,606 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:11:47,620 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-23 21:11:47,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-23 21:11:47,811 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:11:47,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:11:47,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1534047083, now seen corresponding path program 1 times [2024-10-23 21:11:47,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:11:47,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120308029] [2024-10-23 21:11:47,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:11:47,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:11:47,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:11:48,568 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 500 proven. 0 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2024-10-23 21:11:48,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:11:48,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120308029] [2024-10-23 21:11:48,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120308029] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:11:48,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:11:48,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:11:48,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756864008] [2024-10-23 21:11:48,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:11:48,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:11:48,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:11:48,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:11:48,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:11:48,572 INFO L87 Difference]: Start difference. First operand 115297 states and 123089 transitions. Second operand has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 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) [2024-10-23 21:11:51,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:11:51,872 INFO L93 Difference]: Finished difference Result 257368 states and 275827 transitions. [2024-10-23 21:11:51,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:11:51,873 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 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) Word has length 566 [2024-10-23 21:11:51,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:11:52,021 INFO L225 Difference]: With dead ends: 257368 [2024-10-23 21:11:52,021 INFO L226 Difference]: Without dead ends: 142072 [2024-10-23 21:11:52,071 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:11:52,071 INFO L432 NwaCegarLoop]: 1757 mSDtfsCounter, 695 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 2504 mSolverCounterSat, 436 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 1901 SdHoareTripleChecker+Invalid, 2940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 436 IncrementalHoareTripleChecker+Valid, 2504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-10-23 21:11:52,072 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [695 Valid, 1901 Invalid, 2940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [436 Valid, 2504 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-10-23 21:11:52,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142072 states. [2024-10-23 21:11:53,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142072 to 139694. [2024-10-23 21:11:53,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139694 states, 139693 states have (on average 1.060590008089167) internal successors, (148157), 139693 states have internal predecessors, (148157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:53,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139694 states to 139694 states and 148157 transitions. [2024-10-23 21:11:53,984 INFO L78 Accepts]: Start accepts. Automaton has 139694 states and 148157 transitions. Word has length 566 [2024-10-23 21:11:53,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:11:53,984 INFO L471 AbstractCegarLoop]: Abstraction has 139694 states and 148157 transitions. [2024-10-23 21:11:53,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 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) [2024-10-23 21:11:53,985 INFO L276 IsEmpty]: Start isEmpty. Operand 139694 states and 148157 transitions. [2024-10-23 21:11:54,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 567 [2024-10-23 21:11:54,002 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:11:54,002 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:11:54,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-23 21:11:54,003 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:11:54,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:11:54,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1596086697, now seen corresponding path program 1 times [2024-10-23 21:11:54,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:11:54,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519755520] [2024-10-23 21:11:54,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:11:54,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:11:54,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:11:54,303 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 500 proven. 0 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2024-10-23 21:11:54,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:11:54,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519755520] [2024-10-23 21:11:54,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519755520] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:11:54,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:11:54,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:11:54,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196557447] [2024-10-23 21:11:54,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:11:54,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:11:54,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:11:54,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:11:54,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:11:54,305 INFO L87 Difference]: Start difference. First operand 139694 states and 148157 transitions. Second operand has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 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)