./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label06.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 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/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_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 ce3fb29712e91707982cc1d90cd5fa002213aad836fd0a7fc53e12556da2c4fe --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-19 23:47:56,044 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 23:47:56,109 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 23:47:56,115 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 23:47:56,117 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 23:47:56,144 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 23:47:56,145 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 23:47:56,145 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 23:47:56,146 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 23:47:56,147 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 23:47:56,148 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 23:47:56,148 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 23:47:56,149 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 23:47:56,152 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 23:47:56,152 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 23:47:56,152 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 23:47:56,153 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 23:47:56,153 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 23:47:56,153 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 23:47:56,153 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 23:47:56,154 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 23:47:56,154 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 23:47:56,154 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 23:47:56,154 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 23:47:56,154 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 23:47:56,155 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 23:47:56,165 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 23:47:56,165 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 23:47:56,166 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 23:47:56,167 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 23:47:56,167 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 23:47:56,167 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 23:47:56,167 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 23:47:56,167 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 23:47:56,168 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 23:47:56,168 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 23:47:56,168 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 23:47:56,168 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 23:47:56,169 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 23:47:56,169 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 23:47:56,169 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 23:47:56,169 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 23:47:56,170 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce3fb29712e91707982cc1d90cd5fa002213aad836fd0a7fc53e12556da2c4fe [2024-11-19 23:47:56,409 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 23:47:56,433 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 23:47:56,437 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 23:47:56,438 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 23:47:56,439 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 23:47:56,440 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label06.c [2024-11-19 23:47:57,884 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 23:47:58,331 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 23:47:58,331 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label06.c [2024-11-19 23:47:58,366 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65270bd80/40d868938abd4e829117602b697fb3c7/FLAG6a2cb7d6c [2024-11-19 23:47:58,383 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65270bd80/40d868938abd4e829117602b697fb3c7 [2024-11-19 23:47:58,386 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 23:47:58,388 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 23:47:58,391 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 23:47:58,391 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 23:47:58,397 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 23:47:58,397 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 11:47:58" (1/1) ... [2024-11-19 23:47:58,398 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a26687 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:47:58, skipping insertion in model container [2024-11-19 23:47:58,399 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 11:47:58" (1/1) ... [2024-11-19 23:47:58,503 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 23:47:58,865 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label06.c[6450,6463] [2024-11-19 23:47:58,907 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label06.c[9267,9280] [2024-11-19 23:47:59,582 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 23:47:59,596 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 23:47:59,622 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label06.c[6450,6463] [2024-11-19 23:47:59,629 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label06.c[9267,9280] [2024-11-19 23:48:00,014 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 23:48:00,041 INFO L204 MainTranslator]: Completed translation [2024-11-19 23:48:00,042 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:48:00 WrapperNode [2024-11-19 23:48:00,042 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 23:48:00,043 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 23:48:00,043 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 23:48:00,043 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 23:48:00,050 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:48:00" (1/1) ... [2024-11-19 23:48:00,100 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:48:00" (1/1) ... [2024-11-19 23:48:00,420 INFO L138 Inliner]: procedures = 35, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 4983 [2024-11-19 23:48:00,421 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 23:48:00,422 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 23:48:00,422 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 23:48:00,422 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 23:48:00,433 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:48:00" (1/1) ... [2024-11-19 23:48:00,433 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:48:00" (1/1) ... [2024-11-19 23:48:00,480 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:48:00" (1/1) ... [2024-11-19 23:48:00,652 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-19 23:48:00,652 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:48:00" (1/1) ... [2024-11-19 23:48:00,653 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:48:00" (1/1) ... [2024-11-19 23:48:00,822 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:48:00" (1/1) ... [2024-11-19 23:48:00,842 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:48:00" (1/1) ... [2024-11-19 23:48:00,895 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:48:00" (1/1) ... [2024-11-19 23:48:00,926 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:48:00" (1/1) ... [2024-11-19 23:48:00,985 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 23:48:00,986 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 23:48:00,986 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 23:48:00,986 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 23:48:00,987 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:48:00" (1/1) ... [2024-11-19 23:48:00,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 23:48:01,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 23:48:01,022 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 23:48:01,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 23:48:01,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 23:48:01,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 23:48:01,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 23:48:01,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 23:48:01,176 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 23:48:01,179 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 23:48:05,218 INFO L? ?]: Removed 734 outVars from TransFormulas that were not future-live. [2024-11-19 23:48:05,218 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 23:48:05,258 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 23:48:05,258 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-19 23:48:05,259 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:48:05 BoogieIcfgContainer [2024-11-19 23:48:05,259 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 23:48:05,260 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 23:48:05,261 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 23:48:05,264 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 23:48:05,264 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 11:47:58" (1/3) ... [2024-11-19 23:48:05,264 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@94f3a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 11:48:05, skipping insertion in model container [2024-11-19 23:48:05,265 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:48:00" (2/3) ... [2024-11-19 23:48:05,265 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@94f3a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 11:48:05, skipping insertion in model container [2024-11-19 23:48:05,265 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:48:05" (3/3) ... [2024-11-19 23:48:05,266 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label06.c [2024-11-19 23:48:05,285 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 23:48:05,285 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-19 23:48:05,372 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 23:48:05,377 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;@6fe0b67d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 23:48:05,377 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-19 23:48:05,385 INFO L276 IsEmpty]: Start isEmpty. Operand has 874 states, 871 states have (on average 1.9058553386911596) internal successors, (1660), 873 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:48:05,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-19 23:48:05,393 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:48:05,393 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] [2024-11-19 23:48:05,394 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:48:05,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:48:05,398 INFO L85 PathProgramCache]: Analyzing trace with hash -934405548, now seen corresponding path program 1 times [2024-11-19 23:48:05,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:48:05,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283651873] [2024-11-19 23:48:05,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:48:05,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:48:05,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:48:05,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:48:05,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:48:05,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283651873] [2024-11-19 23:48:05,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283651873] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:48:05,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 23:48:05,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 23:48:05,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753131025] [2024-11-19 23:48:05,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:48:05,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 23:48:05,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:48:05,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 23:48:05,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 23:48:05,623 INFO L87 Difference]: Start difference. First operand has 874 states, 871 states have (on average 1.9058553386911596) internal successors, (1660), 873 states have internal predecessors, (1660), 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 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:48:05,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:48:05,713 INFO L93 Difference]: Finished difference Result 1724 states and 3278 transitions. [2024-11-19 23:48:05,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 23:48:05,715 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 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 20 [2024-11-19 23:48:05,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:48:05,741 INFO L225 Difference]: With dead ends: 1724 [2024-11-19 23:48:05,741 INFO L226 Difference]: Without dead ends: 808 [2024-11-19 23:48:05,750 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 [2024-11-19 23:48:05,753 INFO L432 NwaCegarLoop]: 1591 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1591 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 23:48:05,754 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1591 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 23:48:05,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2024-11-19 23:48:05,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 808. [2024-11-19 23:48:05,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 806 states have (on average 1.8945409429280398) internal successors, (1527), 807 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:48:05,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1527 transitions. [2024-11-19 23:48:05,837 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1527 transitions. Word has length 20 [2024-11-19 23:48:05,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:48:05,837 INFO L471 AbstractCegarLoop]: Abstraction has 808 states and 1527 transitions. [2024-11-19 23:48:05,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:48:05,838 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1527 transitions. [2024-11-19 23:48:05,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-19 23:48:05,839 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:48:05,839 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] [2024-11-19 23:48:05,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 23:48:05,840 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:48:05,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:48:05,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1945522798, now seen corresponding path program 1 times [2024-11-19 23:48:05,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:48:05,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154709671] [2024-11-19 23:48:05,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:48:05,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:48:05,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:48:06,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:48:06,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:48:06,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154709671] [2024-11-19 23:48:06,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154709671] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:48:06,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 23:48:06,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 23:48:06,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686633303] [2024-11-19 23:48:06,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:48:06,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 23:48:06,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:48:06,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 23:48:06,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 23:48:06,094 INFO L87 Difference]: Start difference. First operand 808 states and 1527 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:48:06,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:48:06,195 INFO L93 Difference]: Finished difference Result 844 states and 1581 transitions. [2024-11-19 23:48:06,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 23:48:06,199 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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 20 [2024-11-19 23:48:06,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:48:06,207 INFO L225 Difference]: With dead ends: 844 [2024-11-19 23:48:06,208 INFO L226 Difference]: Without dead ends: 808 [2024-11-19 23:48:06,209 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 23:48:06,210 INFO L432 NwaCegarLoop]: 1525 mSDtfsCounter, 0 mSDsluCounter, 4554 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6079 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 23:48:06,213 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6079 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 23:48:06,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2024-11-19 23:48:06,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 808. [2024-11-19 23:48:06,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 806 states have (on average 1.8746898263027296) internal successors, (1511), 807 states have internal predecessors, (1511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:48:06,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1511 transitions. [2024-11-19 23:48:06,245 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1511 transitions. Word has length 20 [2024-11-19 23:48:06,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:48:06,246 INFO L471 AbstractCegarLoop]: Abstraction has 808 states and 1511 transitions. [2024-11-19 23:48:06,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:48:06,246 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1511 transitions. [2024-11-19 23:48:06,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-19 23:48:06,248 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:48:06,248 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] [2024-11-19 23:48:06,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 23:48:06,249 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:48:06,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:48:06,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1765575147, now seen corresponding path program 1 times [2024-11-19 23:48:06,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:48:06,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829010105] [2024-11-19 23:48:06,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:48:06,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:48:06,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:48:06,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:48:06,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:48:06,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829010105] [2024-11-19 23:48:06,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829010105] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:48:06,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 23:48:06,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 23:48:06,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778034485] [2024-11-19 23:48:06,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:48:06,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 23:48:06,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:48:06,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 23:48:06,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 23:48:06,357 INFO L87 Difference]: Start difference. First operand 808 states and 1511 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) [2024-11-19 23:48:09,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:48:09,427 INFO L93 Difference]: Finished difference Result 2312 states and 4384 transitions. [2024-11-19 23:48:09,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 23:48:09,428 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 [2024-11-19 23:48:09,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:48:09,434 INFO L225 Difference]: With dead ends: 2312 [2024-11-19 23:48:09,438 INFO L226 Difference]: Without dead ends: 1559 [2024-11-19 23:48:09,440 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 [2024-11-19 23:48:09,441 INFO L432 NwaCegarLoop]: 180 mSDtfsCounter, 917 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2377 mSolverCounterSat, 711 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 917 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 3088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 711 IncrementalHoareTripleChecker+Valid, 2377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-19 23:48:09,441 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [917 Valid, 187 Invalid, 3088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [711 Valid, 2377 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-19 23:48:09,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1559 states. [2024-11-19 23:48:09,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1559 to 1559. [2024-11-19 23:48:09,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1559 states, 1557 states have (on average 1.8304431599229287) internal successors, (2850), 1558 states have internal predecessors, (2850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:48:09,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1559 states to 1559 states and 2850 transitions. [2024-11-19 23:48:09,477 INFO L78 Accepts]: Start accepts. Automaton has 1559 states and 2850 transitions. Word has length 24 [2024-11-19 23:48:09,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:48:09,479 INFO L471 AbstractCegarLoop]: Abstraction has 1559 states and 2850 transitions. [2024-11-19 23:48:09,479 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) [2024-11-19 23:48:09,479 INFO L276 IsEmpty]: Start isEmpty. Operand 1559 states and 2850 transitions. [2024-11-19 23:48:09,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-19 23:48:09,482 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:48:09,482 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 23:48:09,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 23:48:09,483 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:48:09,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:48:09,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1226597962, now seen corresponding path program 1 times [2024-11-19 23:48:09,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:48:09,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954557296] [2024-11-19 23:48:09,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:48:09,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:48:09,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:48:09,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:48:09,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:48:09,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954557296] [2024-11-19 23:48:09,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954557296] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:48:09,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 23:48:09,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 23:48:09,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802465583] [2024-11-19 23:48:09,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:48:09,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 23:48:09,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:48:09,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 23:48:09,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 23:48:09,641 INFO L87 Difference]: Start difference. First operand 1559 states and 2850 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:48:09,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:48:09,777 INFO L93 Difference]: Finished difference Result 1751 states and 3150 transitions. [2024-11-19 23:48:09,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 23:48:09,778 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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 35 [2024-11-19 23:48:09,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:48:09,786 INFO L225 Difference]: With dead ends: 1751 [2024-11-19 23:48:09,786 INFO L226 Difference]: Without dead ends: 1719 [2024-11-19 23:48:09,789 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-19 23:48:09,791 INFO L432 NwaCegarLoop]: 1505 mSDtfsCounter, 4682 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4682 SdHoareTripleChecker+Valid, 1758 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 23:48:09,792 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4682 Valid, 1758 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 23:48:09,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1719 states. [2024-11-19 23:48:09,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1719 to 1589. [2024-11-19 23:48:09,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1589 states, 1587 states have (on average 1.8254568367989918) internal successors, (2897), 1588 states have internal predecessors, (2897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:48:09,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1589 states to 1589 states and 2897 transitions. [2024-11-19 23:48:09,835 INFO L78 Accepts]: Start accepts. Automaton has 1589 states and 2897 transitions. Word has length 35 [2024-11-19 23:48:09,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:48:09,836 INFO L471 AbstractCegarLoop]: Abstraction has 1589 states and 2897 transitions. [2024-11-19 23:48:09,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:48:09,836 INFO L276 IsEmpty]: Start isEmpty. Operand 1589 states and 2897 transitions. [2024-11-19 23:48:09,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-19 23:48:09,839 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:48:09,840 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 23:48:09,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 23:48:09,840 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:48:09,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:48:09,841 INFO L85 PathProgramCache]: Analyzing trace with hash 523901274, now seen corresponding path program 1 times [2024-11-19 23:48:09,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:48:09,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702911494] [2024-11-19 23:48:09,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:48:09,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:48:09,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:48:09,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:48:09,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:48:09,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702911494] [2024-11-19 23:48:09,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702911494] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:48:09,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 23:48:09,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 23:48:09,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853677967] [2024-11-19 23:48:09,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:48:09,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 23:48:09,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:48:09,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 23:48:09,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 23:48:09,949 INFO L87 Difference]: Start difference. First operand 1589 states and 2897 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:48:09,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:48:09,996 INFO L93 Difference]: Finished difference Result 1702 states and 3072 transitions. [2024-11-19 23:48:09,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 23:48:09,996 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 37 [2024-11-19 23:48:09,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:48:10,003 INFO L225 Difference]: With dead ends: 1702 [2024-11-19 23:48:10,003 INFO L226 Difference]: Without dead ends: 1640 [2024-11-19 23:48:10,004 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 [2024-11-19 23:48:10,005 INFO L432 NwaCegarLoop]: 1507 mSDtfsCounter, 1468 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1468 SdHoareTripleChecker+Valid, 1550 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 23:48:10,006 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1468 Valid, 1550 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 23:48:10,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1640 states. [2024-11-19 23:48:10,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1640 to 1636. [2024-11-19 23:48:10,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1636 states, 1634 states have (on average 1.8157894736842106) internal successors, (2967), 1635 states have internal predecessors, (2967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:48:10,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1636 states to 1636 states and 2967 transitions. [2024-11-19 23:48:10,050 INFO L78 Accepts]: Start accepts. Automaton has 1636 states and 2967 transitions. Word has length 37 [2024-11-19 23:48:10,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:48:10,050 INFO L471 AbstractCegarLoop]: Abstraction has 1636 states and 2967 transitions. [2024-11-19 23:48:10,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:48:10,051 INFO L276 IsEmpty]: Start isEmpty. Operand 1636 states and 2967 transitions. [2024-11-19 23:48:10,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-19 23:48:10,055 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:48:10,055 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 23:48:10,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 23:48:10,056 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:48:10,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:48:10,057 INFO L85 PathProgramCache]: Analyzing trace with hash 590394786, now seen corresponding path program 1 times [2024-11-19 23:48:10,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:48:10,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655089904] [2024-11-19 23:48:10,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:48:10,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:48:10,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:48:10,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:48:10,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:48:10,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655089904] [2024-11-19 23:48:10,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655089904] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:48:10,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 23:48:10,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 23:48:10,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236531909] [2024-11-19 23:48:10,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:48:10,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 23:48:10,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:48:10,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 23:48:10,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 23:48:10,250 INFO L87 Difference]: Start difference. First operand 1636 states and 2967 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:48:10,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:48:10,337 INFO L93 Difference]: Finished difference Result 1747 states and 3135 transitions. [2024-11-19 23:48:10,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 23:48:10,340 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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 37 [2024-11-19 23:48:10,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:48:10,347 INFO L225 Difference]: With dead ends: 1747 [2024-11-19 23:48:10,348 INFO L226 Difference]: Without dead ends: 1638 [2024-11-19 23:48:10,349 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-19 23:48:10,350 INFO L432 NwaCegarLoop]: 1506 mSDtfsCounter, 2952 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2952 SdHoareTripleChecker+Valid, 1601 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 23:48:10,351 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2952 Valid, 1601 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 23:48:10,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1638 states. [2024-11-19 23:48:10,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1638 to 1636. [2024-11-19 23:48:10,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1636 states, 1634 states have (on average 1.8145654834761322) internal successors, (2965), 1635 states have internal predecessors, (2965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:48:10,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1636 states to 1636 states and 2965 transitions. [2024-11-19 23:48:10,401 INFO L78 Accepts]: Start accepts. Automaton has 1636 states and 2965 transitions. Word has length 37 [2024-11-19 23:48:10,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:48:10,402 INFO L471 AbstractCegarLoop]: Abstraction has 1636 states and 2965 transitions. [2024-11-19 23:48:10,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:48:10,403 INFO L276 IsEmpty]: Start isEmpty. Operand 1636 states and 2965 transitions. [2024-11-19 23:48:10,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-19 23:48:10,405 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:48:10,405 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 23:48:10,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 23:48:10,406 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:48:10,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:48:10,408 INFO L85 PathProgramCache]: Analyzing trace with hash 707645968, now seen corresponding path program 1 times [2024-11-19 23:48:10,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:48:10,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058496585] [2024-11-19 23:48:10,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:48:10,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:48:10,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:48:10,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:48:10,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:48:10,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058496585] [2024-11-19 23:48:10,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058496585] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:48:10,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 23:48:10,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 23:48:10,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066958744] [2024-11-19 23:48:10,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:48:10,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 23:48:10,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:48:10,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 23:48:10,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-19 23:48:10,630 INFO L87 Difference]: Start difference. First operand 1636 states and 2965 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:48:10,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:48:10,710 INFO L93 Difference]: Finished difference Result 1644 states and 2974 transitions. [2024-11-19 23:48:10,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 23:48:10,710 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 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 38 [2024-11-19 23:48:10,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:48:10,717 INFO L225 Difference]: With dead ends: 1644 [2024-11-19 23:48:10,717 INFO L226 Difference]: Without dead ends: 1642 [2024-11-19 23:48:10,718 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-19 23:48:10,718 INFO L432 NwaCegarLoop]: 1505 mSDtfsCounter, 0 mSDsluCounter, 9017 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10522 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 23:48:10,719 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10522 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 23:48:10,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1642 states. [2024-11-19 23:48:10,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1642 to 1642. [2024-11-19 23:48:10,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1642 states, 1640 states have (on average 1.8109756097560976) internal successors, (2970), 1641 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:48:10,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1642 states to 1642 states and 2970 transitions. [2024-11-19 23:48:10,748 INFO L78 Accepts]: Start accepts. Automaton has 1642 states and 2970 transitions. Word has length 38 [2024-11-19 23:48:10,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:48:10,748 INFO L471 AbstractCegarLoop]: Abstraction has 1642 states and 2970 transitions. [2024-11-19 23:48:10,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:48:10,749 INFO L276 IsEmpty]: Start isEmpty. Operand 1642 states and 2970 transitions. [2024-11-19 23:48:10,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-19 23:48:10,749 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:48:10,749 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 23:48:10,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 23:48:10,750 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:48:10,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:48:10,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1903217474, now seen corresponding path program 1 times [2024-11-19 23:48:10,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:48:10,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958703048] [2024-11-19 23:48:10,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:48:10,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:48:10,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:48:10,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:48:10,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:48:10,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958703048] [2024-11-19 23:48:10,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958703048] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:48:10,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 23:48:10,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 23:48:10,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929508699] [2024-11-19 23:48:10,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:48:10,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 23:48:10,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:48:10,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 23:48:10,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 23:48:10,801 INFO L87 Difference]: Start difference. First operand 1642 states and 2970 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:48:10,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:48:10,831 INFO L93 Difference]: Finished difference Result 1856 states and 3282 transitions. [2024-11-19 23:48:10,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 23:48:10,831 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 39 [2024-11-19 23:48:10,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:48:10,838 INFO L225 Difference]: With dead ends: 1856 [2024-11-19 23:48:10,838 INFO L226 Difference]: Without dead ends: 1741 [2024-11-19 23:48:10,839 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 [2024-11-19 23:48:10,839 INFO L432 NwaCegarLoop]: 1528 mSDtfsCounter, 1475 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1475 SdHoareTripleChecker+Valid, 1587 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 23:48:10,840 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1475 Valid, 1587 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 23:48:10,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1741 states. [2024-11-19 23:48:10,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1741 to 1739. [2024-11-19 23:48:10,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1739 states, 1737 states have (on average 1.7887161773172136) internal successors, (3107), 1738 states have internal predecessors, (3107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:48:10,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1739 states to 1739 states and 3107 transitions. [2024-11-19 23:48:10,877 INFO L78 Accepts]: Start accepts. Automaton has 1739 states and 3107 transitions. Word has length 39 [2024-11-19 23:48:10,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:48:10,877 INFO L471 AbstractCegarLoop]: Abstraction has 1739 states and 3107 transitions. [2024-11-19 23:48:10,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:48:10,878 INFO L276 IsEmpty]: Start isEmpty. Operand 1739 states and 3107 transitions. [2024-11-19 23:48:10,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-19 23:48:10,878 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:48:10,878 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 23:48:10,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 23:48:10,879 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:48:10,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:48:10,880 INFO L85 PathProgramCache]: Analyzing trace with hash 122284610, now seen corresponding path program 1 times [2024-11-19 23:48:10,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:48:10,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042292753] [2024-11-19 23:48:10,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:48:10,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:48:10,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:48:10,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:48:10,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:48:10,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042292753] [2024-11-19 23:48:10,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042292753] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:48:10,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 23:48:10,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 23:48:10,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554299662] [2024-11-19 23:48:10,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:48:10,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 23:48:10,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:48:10,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 23:48:10,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 23:48:10,931 INFO L87 Difference]: Start difference. First operand 1739 states and 3107 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:48:10,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:48:10,966 INFO L93 Difference]: Finished difference Result 2131 states and 3665 transitions. [2024-11-19 23:48:10,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 23:48:10,967 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 39 [2024-11-19 23:48:10,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:48:10,975 INFO L225 Difference]: With dead ends: 2131 [2024-11-19 23:48:10,976 INFO L226 Difference]: Without dead ends: 1919 [2024-11-19 23:48:10,977 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 [2024-11-19 23:48:10,977 INFO L432 NwaCegarLoop]: 1538 mSDtfsCounter, 1477 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1477 SdHoareTripleChecker+Valid, 1593 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 23:48:10,978 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1477 Valid, 1593 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 23:48:10,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1919 states. [2024-11-19 23:48:11,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1919 to 1917. [2024-11-19 23:48:11,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1917 states, 1915 states have (on average 1.7488250652741515) internal successors, (3349), 1916 states have internal predecessors, (3349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:48:11,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1917 states to 1917 states and 3349 transitions. [2024-11-19 23:48:11,023 INFO L78 Accepts]: Start accepts. Automaton has 1917 states and 3349 transitions. Word has length 39 [2024-11-19 23:48:11,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:48:11,024 INFO L471 AbstractCegarLoop]: Abstraction has 1917 states and 3349 transitions. [2024-11-19 23:48:11,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:48:11,024 INFO L276 IsEmpty]: Start isEmpty. Operand 1917 states and 3349 transitions. [2024-11-19 23:48:11,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-19 23:48:11,025 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:48:11,025 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 23:48:11,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 23:48:11,025 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:48:11,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:48:11,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1688735299, now seen corresponding path program 1 times [2024-11-19 23:48:11,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:48:11,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543244751] [2024-11-19 23:48:11,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:48:11,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:48:11,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:48:11,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:48:11,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:48:11,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543244751] [2024-11-19 23:48:11,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543244751] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:48:11,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 23:48:11,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 23:48:11,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916884394] [2024-11-19 23:48:11,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:48:11,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 23:48:11,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:48:11,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 23:48:11,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 23:48:11,084 INFO L87 Difference]: Start difference. First operand 1917 states and 3349 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:48:11,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:48:11,117 INFO L93 Difference]: Finished difference Result 2340 states and 3955 transitions. [2024-11-19 23:48:11,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 23:48:11,118 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 41 [2024-11-19 23:48:11,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:48:11,126 INFO L225 Difference]: With dead ends: 2340 [2024-11-19 23:48:11,126 INFO L226 Difference]: Without dead ends: 2105 [2024-11-19 23:48:11,127 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 [2024-11-19 23:48:11,128 INFO L432 NwaCegarLoop]: 1543 mSDtfsCounter, 1476 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1476 SdHoareTripleChecker+Valid, 1594 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 23:48:11,129 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1476 Valid, 1594 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 23:48:11,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2105 states. [2024-11-19 23:48:11,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2105 to 2103. [2024-11-19 23:48:11,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2103 states, 2101 states have (on average 1.714897667777249) internal successors, (3603), 2102 states have internal predecessors, (3603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:48:11,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2103 states to 2103 states and 3603 transitions. [2024-11-19 23:48:11,231 INFO L78 Accepts]: Start accepts. Automaton has 2103 states and 3603 transitions. Word has length 41 [2024-11-19 23:48:11,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:48:11,231 INFO L471 AbstractCegarLoop]: Abstraction has 2103 states and 3603 transitions. [2024-11-19 23:48:11,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:48:11,231 INFO L276 IsEmpty]: Start isEmpty. Operand 2103 states and 3603 transitions. [2024-11-19 23:48:11,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-19 23:48:11,232 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:48:11,232 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 23:48:11,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 23:48:11,233 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:48:11,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:48:11,233 INFO L85 PathProgramCache]: Analyzing trace with hash 923003988, now seen corresponding path program 1 times [2024-11-19 23:48:11,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:48:11,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939021637] [2024-11-19 23:48:11,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:48:11,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:48:11,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:48:11,339 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 23:48:11,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:48:11,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939021637] [2024-11-19 23:48:11,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939021637] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:48:11,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 23:48:11,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 23:48:11,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457201257] [2024-11-19 23:48:11,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:48:11,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 23:48:11,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:48:11,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 23:48:11,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 23:48:11,343 INFO L87 Difference]: Start difference. First operand 2103 states and 3603 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:48:11,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:48:11,445 INFO L93 Difference]: Finished difference Result 3959 states and 6183 transitions. [2024-11-19 23:48:11,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 23:48:11,446 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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 54 [2024-11-19 23:48:11,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:48:11,458 INFO L225 Difference]: With dead ends: 3959 [2024-11-19 23:48:11,458 INFO L226 Difference]: Without dead ends: 3385 [2024-11-19 23:48:11,459 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-19 23:48:11,460 INFO L432 NwaCegarLoop]: 1551 mSDtfsCounter, 3061 mSDsluCounter, 1596 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3061 SdHoareTripleChecker+Valid, 3147 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 23:48:11,460 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3061 Valid, 3147 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 23:48:11,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3385 states. [2024-11-19 23:48:11,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3385 to 2675. [2024-11-19 23:48:11,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2675 states, 2673 states have (on average 1.6427235316124205) internal successors, (4391), 2674 states have internal predecessors, (4391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:48:11,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2675 states to 2675 states and 4391 transitions. [2024-11-19 23:48:11,525 INFO L78 Accepts]: Start accepts. Automaton has 2675 states and 4391 transitions. Word has length 54 [2024-11-19 23:48:11,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:48:11,525 INFO L471 AbstractCegarLoop]: Abstraction has 2675 states and 4391 transitions. [2024-11-19 23:48:11,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:48:11,526 INFO L276 IsEmpty]: Start isEmpty. Operand 2675 states and 4391 transitions. [2024-11-19 23:48:11,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-19 23:48:11,527 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:48:11,527 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 23:48:11,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 23:48:11,527 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:48:11,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:48:11,528 INFO L85 PathProgramCache]: Analyzing trace with hash -857928876, now seen corresponding path program 1 times [2024-11-19 23:48:11,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:48:11,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135759554] [2024-11-19 23:48:11,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:48:11,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:48:11,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:48:11,640 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 23:48:11,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:48:11,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135759554] [2024-11-19 23:48:11,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135759554] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:48:11,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 23:48:11,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 23:48:11,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968618564] [2024-11-19 23:48:11,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:48:11,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 23:48:11,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:48:11,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 23:48:11,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 23:48:11,642 INFO L87 Difference]: Start difference. First operand 2675 states and 4391 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:48:11,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:48:11,753 INFO L93 Difference]: Finished difference Result 4531 states and 6971 transitions. [2024-11-19 23:48:11,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 23:48:11,754 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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 54 [2024-11-19 23:48:11,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:48:11,768 INFO L225 Difference]: With dead ends: 4531 [2024-11-19 23:48:11,768 INFO L226 Difference]: Without dead ends: 3957 [2024-11-19 23:48:11,770 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-19 23:48:11,771 INFO L432 NwaCegarLoop]: 1552 mSDtfsCounter, 3049 mSDsluCounter, 1618 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3049 SdHoareTripleChecker+Valid, 3170 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 23:48:11,771 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3049 Valid, 3170 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 23:48:11,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3957 states. [2024-11-19 23:48:11,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3957 to 3535. [2024-11-19 23:48:11,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3535 states, 3533 states have (on average 1.5745825077837532) internal successors, (5563), 3534 states have internal predecessors, (5563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:48:11,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3535 states to 3535 states and 5563 transitions. [2024-11-19 23:48:11,853 INFO L78 Accepts]: Start accepts. Automaton has 3535 states and 5563 transitions. Word has length 54 [2024-11-19 23:48:11,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:48:11,853 INFO L471 AbstractCegarLoop]: Abstraction has 3535 states and 5563 transitions. [2024-11-19 23:48:11,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:48:11,854 INFO L276 IsEmpty]: Start isEmpty. Operand 3535 states and 5563 transitions. [2024-11-19 23:48:11,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-19 23:48:11,854 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:48:11,855 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-19 23:48:11,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 23:48:11,855 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:48:11,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:48:11,855 INFO L85 PathProgramCache]: Analyzing trace with hash 894361900, now seen corresponding path program 1 times [2024-11-19 23:48:11,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:48:11,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244226537] [2024-11-19 23:48:11,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:48:11,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:48:11,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:48:11,936 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:48:11,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:48:11,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244226537] [2024-11-19 23:48:11,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244226537] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:48:11,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 23:48:11,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 23:48:11,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623264867] [2024-11-19 23:48:11,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:48:11,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 23:48:11,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:48:11,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 23:48:11,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 23:48:11,939 INFO L87 Difference]: Start difference. First operand 3535 states and 5563 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:48:11,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:48:11,993 INFO L93 Difference]: Finished difference Result 5011 states and 7626 transitions. [2024-11-19 23:48:11,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 23:48:11,994 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 56 [2024-11-19 23:48:11,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:48:12,001 INFO L225 Difference]: With dead ends: 5011 [2024-11-19 23:48:12,001 INFO L226 Difference]: Without dead ends: 3005 [2024-11-19 23:48:12,003 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 [2024-11-19 23:48:12,004 INFO L432 NwaCegarLoop]: 1535 mSDtfsCounter, 34 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 3031 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 23:48:12,004 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 3031 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 23:48:12,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3005 states. [2024-11-19 23:48:12,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3005 to 3003. [2024-11-19 23:48:12,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3003 states, 3001 states have (on average 1.611129623458847) internal successors, (4835), 3002 states have internal predecessors, (4835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:48:12,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3003 states to 3003 states and 4835 transitions. [2024-11-19 23:48:12,083 INFO L78 Accepts]: Start accepts. Automaton has 3003 states and 4835 transitions. Word has length 56 [2024-11-19 23:48:12,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:48:12,083 INFO L471 AbstractCegarLoop]: Abstraction has 3003 states and 4835 transitions. [2024-11-19 23:48:12,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:48:12,084 INFO L276 IsEmpty]: Start isEmpty. Operand 3003 states and 4835 transitions. [2024-11-19 23:48:12,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-19 23:48:12,085 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:48:12,085 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 23:48:12,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 23:48:12,086 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:48:12,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:48:12,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1218909775, now seen corresponding path program 1 times [2024-11-19 23:48:12,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:48:12,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298412366] [2024-11-19 23:48:12,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:48:12,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:48:12,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:48:12,183 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 23:48:12,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:48:12,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298412366] [2024-11-19 23:48:12,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298412366] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:48:12,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 23:48:12,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 23:48:12,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519311871] [2024-11-19 23:48:12,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:48:12,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 23:48:12,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:48:12,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 23:48:12,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 23:48:12,185 INFO L87 Difference]: Start difference. First operand 3003 states and 4835 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:48:12,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:48:12,297 INFO L93 Difference]: Finished difference Result 4259 states and 6591 transitions. [2024-11-19 23:48:12,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 23:48:12,300 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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 56 [2024-11-19 23:48:12,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:48:12,307 INFO L225 Difference]: With dead ends: 4259 [2024-11-19 23:48:12,308 INFO L226 Difference]: Without dead ends: 3841 [2024-11-19 23:48:12,309 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-19 23:48:12,312 INFO L432 NwaCegarLoop]: 1549 mSDtfsCounter, 3049 mSDsluCounter, 1606 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3049 SdHoareTripleChecker+Valid, 3155 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 23:48:12,313 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3049 Valid, 3155 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 23:48:12,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3841 states. [2024-11-19 23:48:12,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3841 to 3419. [2024-11-19 23:48:12,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3419 states, 3417 states have (on average 1.5835528241147205) internal successors, (5411), 3418 states have internal predecessors, (5411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:48:12,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3419 states to 3419 states and 5411 transitions. [2024-11-19 23:48:12,426 INFO L78 Accepts]: Start accepts. Automaton has 3419 states and 5411 transitions. Word has length 56 [2024-11-19 23:48:12,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:48:12,426 INFO L471 AbstractCegarLoop]: Abstraction has 3419 states and 5411 transitions. [2024-11-19 23:48:12,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:48:12,427 INFO L276 IsEmpty]: Start isEmpty. Operand 3419 states and 5411 transitions. [2024-11-19 23:48:12,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-19 23:48:12,427 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:48:12,427 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-19 23:48:12,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 23:48:12,428 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:48:12,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:48:12,428 INFO L85 PathProgramCache]: Analyzing trace with hash -877348108, now seen corresponding path program 1 times [2024-11-19 23:48:12,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:48:12,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555717924] [2024-11-19 23:48:12,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:48:12,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:48:12,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:48:12,506 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:48:12,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:48:12,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555717924] [2024-11-19 23:48:12,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555717924] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:48:12,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 23:48:12,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 23:48:12,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551680554] [2024-11-19 23:48:12,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:48:12,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 23:48:12,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:48:12,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 23:48:12,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 23:48:12,508 INFO L87 Difference]: Start difference. First operand 3419 states and 5411 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:48:12,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:48:12,548 INFO L93 Difference]: Finished difference Result 4359 states and 6709 transitions. [2024-11-19 23:48:12,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 23:48:12,549 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-19 23:48:12,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:48:12,553 INFO L225 Difference]: With dead ends: 4359 [2024-11-19 23:48:12,554 INFO L226 Difference]: Without dead ends: 2485 [2024-11-19 23:48:12,556 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 [2024-11-19 23:48:12,556 INFO L432 NwaCegarLoop]: 1528 mSDtfsCounter, 29 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3016 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 23:48:12,557 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3016 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 23:48:12,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2485 states. [2024-11-19 23:48:12,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2485 to 2483. [2024-11-19 23:48:12,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2483 states, 2481 states have (on average 1.6513502619911327) internal successors, (4097), 2482 states have internal predecessors, (4097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:48:12,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2483 states to 2483 states and 4097 transitions. [2024-11-19 23:48:12,601 INFO L78 Accepts]: Start accepts. Automaton has 2483 states and 4097 transitions. Word has length 57 [2024-11-19 23:48:12,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:48:12,601 INFO L471 AbstractCegarLoop]: Abstraction has 2483 states and 4097 transitions. [2024-11-19 23:48:12,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:48:12,601 INFO L276 IsEmpty]: Start isEmpty. Operand 2483 states and 4097 transitions. [2024-11-19 23:48:12,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-19 23:48:12,602 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:48:12,602 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 23:48:12,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-19 23:48:12,602 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:48:12,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:48:12,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1226511174, now seen corresponding path program 1 times [2024-11-19 23:48:12,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:48:12,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992215622] [2024-11-19 23:48:12,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:48:12,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:48:12,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:48:12,677 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:48:12,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:48:12,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992215622] [2024-11-19 23:48:12,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992215622] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:48:12,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 23:48:12,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 23:48:12,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152542029] [2024-11-19 23:48:12,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:48:12,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 23:48:12,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:48:12,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 23:48:12,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 23:48:12,680 INFO L87 Difference]: Start difference. First operand 2483 states and 4097 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:48:12,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:48:12,724 INFO L93 Difference]: Finished difference Result 2955 states and 4738 transitions. [2024-11-19 23:48:12,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 23:48:12,724 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 59 [2024-11-19 23:48:12,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:48:12,728 INFO L225 Difference]: With dead ends: 2955 [2024-11-19 23:48:12,728 INFO L226 Difference]: Without dead ends: 2017 [2024-11-19 23:48:12,730 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 [2024-11-19 23:48:12,730 INFO L432 NwaCegarLoop]: 1521 mSDtfsCounter, 26 mSDsluCounter, 1480 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 3001 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 23:48:12,730 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 3001 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 23:48:12,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2017 states. [2024-11-19 23:48:12,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2017 to 2015. [2024-11-19 23:48:12,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2015 states, 2013 states have (on average 1.7133631395926479) internal successors, (3449), 2014 states have internal predecessors, (3449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:48:12,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2015 states to 2015 states and 3449 transitions. [2024-11-19 23:48:12,768 INFO L78 Accepts]: Start accepts. Automaton has 2015 states and 3449 transitions. Word has length 59 [2024-11-19 23:48:12,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:48:12,768 INFO L471 AbstractCegarLoop]: Abstraction has 2015 states and 3449 transitions. [2024-11-19 23:48:12,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:48:12,768 INFO L276 IsEmpty]: Start isEmpty. Operand 2015 states and 3449 transitions. [2024-11-19 23:48:12,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-19 23:48:12,769 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:48:12,769 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-19 23:48:12,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-19 23:48:12,769 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:48:12,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:48:12,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1826022888, now seen corresponding path program 1 times [2024-11-19 23:48:12,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:48:12,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661081927] [2024-11-19 23:48:12,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:48:12,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:48:12,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:48:14,047 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:48:14,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:48:14,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661081927] [2024-11-19 23:48:14,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661081927] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 23:48:14,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764785033] [2024-11-19 23:48:14,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:48:14,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 23:48:14,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 23:48:14,050 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 23:48:14,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 23:48:14,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:48:14,158 INFO L255 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-19 23:48:14,164 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 23:48:14,387 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 23:48:14,387 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 23:48:14,551 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 23:48:14,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764785033] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 23:48:14,551 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 23:48:14,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 4] total 19 [2024-11-19 23:48:14,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746277409] [2024-11-19 23:48:14,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 23:48:14,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-19 23:48:14,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:48:14,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-19 23:48:14,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2024-11-19 23:48:14,553 INFO L87 Difference]: Start difference. First operand 2015 states and 3449 transitions. Second operand has 19 states, 19 states have (on average 8.736842105263158) internal successors, (166), 19 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:48:16,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:48:16,631 INFO L93 Difference]: Finished difference Result 4416 states and 6623 transitions. [2024-11-19 23:48:16,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-19 23:48:16,632 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 8.736842105263158) internal successors, (166), 19 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-11-19 23:48:16,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:48:16,639 INFO L225 Difference]: With dead ends: 4416 [2024-11-19 23:48:16,639 INFO L226 Difference]: Without dead ends: 3946 [2024-11-19 23:48:16,642 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 788 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=545, Invalid=2535, Unknown=0, NotChecked=0, Total=3080 [2024-11-19 23:48:16,642 INFO L432 NwaCegarLoop]: 1499 mSDtfsCounter, 17260 mSDsluCounter, 7676 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17260 SdHoareTripleChecker+Valid, 9175 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 23:48:16,643 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17260 Valid, 9175 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 23:48:16,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3946 states. [2024-11-19 23:48:16,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3946 to 3912. [2024-11-19 23:48:16,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3912 states, 3910 states have (on average 1.481841432225064) internal successors, (5794), 3911 states have internal predecessors, (5794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:48:16,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3912 states to 3912 states and 5794 transitions. [2024-11-19 23:48:16,778 INFO L78 Accepts]: Start accepts. Automaton has 3912 states and 5794 transitions. Word has length 61 [2024-11-19 23:48:16,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:48:16,778 INFO L471 AbstractCegarLoop]: Abstraction has 3912 states and 5794 transitions. [2024-11-19 23:48:16,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 8.736842105263158) internal successors, (166), 19 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:48:16,779 INFO L276 IsEmpty]: Start isEmpty. Operand 3912 states and 5794 transitions. [2024-11-19 23:48:16,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-19 23:48:16,780 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:48:16,780 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 23:48:16,790 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 23:48:16,980 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,SelfDestructingSolverStorable16 [2024-11-19 23:48:16,981 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:48:16,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:48:16,981 INFO L85 PathProgramCache]: Analyzing trace with hash 459765187, now seen corresponding path program 1 times [2024-11-19 23:48:16,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:48:16,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180021014] [2024-11-19 23:48:16,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:48:16,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:48:17,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:48:18,908 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:48:18,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:48:18,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180021014] [2024-11-19 23:48:18,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180021014] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 23:48:18,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442623717] [2024-11-19 23:48:18,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:48:18,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 23:48:18,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 23:48:18,912 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 23:48:18,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 23:48:19,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:48:19,010 INFO L255 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-19 23:48:19,012 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 23:48:19,403 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:48:19,404 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 23:48:20,091 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:48:20,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442623717] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 23:48:20,091 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 23:48:20,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 25 [2024-11-19 23:48:20,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907421942] [2024-11-19 23:48:20,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 23:48:20,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-19 23:48:20,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:48:20,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-19 23:48:20,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650 [2024-11-19 23:48:20,094 INFO L87 Difference]: Start difference. First operand 3912 states and 5794 transitions. Second operand has 26 states, 26 states have (on average 5.769230769230769) internal successors, (150), 25 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:48:20,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:48:20,647 INFO L93 Difference]: Finished difference Result 8181 states and 11209 transitions. [2024-11-19 23:48:20,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-19 23:48:20,648 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.769230769230769) internal successors, (150), 25 states have internal predecessors, (150), 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 62 [2024-11-19 23:48:20,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:48:20,658 INFO L225 Difference]: With dead ends: 8181 [2024-11-19 23:48:20,659 INFO L226 Difference]: Without dead ends: 6222 [2024-11-19 23:48:20,663 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=287, Invalid=1045, Unknown=0, NotChecked=0, Total=1332 [2024-11-19 23:48:20,664 INFO L432 NwaCegarLoop]: 1495 mSDtfsCounter, 10631 mSDsluCounter, 3253 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10631 SdHoareTripleChecker+Valid, 4748 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 23:48:20,664 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10631 Valid, 4748 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 23:48:20,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6222 states. [2024-11-19 23:48:20,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6222 to 6156. [2024-11-19 23:48:20,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6156 states, 6154 states have (on average 1.3865778355541112) internal successors, (8533), 6155 states have internal predecessors, (8533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:48:20,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6156 states to 6156 states and 8533 transitions. [2024-11-19 23:48:20,817 INFO L78 Accepts]: Start accepts. Automaton has 6156 states and 8533 transitions. Word has length 62 [2024-11-19 23:48:20,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:48:20,818 INFO L471 AbstractCegarLoop]: Abstraction has 6156 states and 8533 transitions. [2024-11-19 23:48:20,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.769230769230769) internal successors, (150), 25 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:48:20,818 INFO L276 IsEmpty]: Start isEmpty. Operand 6156 states and 8533 transitions. [2024-11-19 23:48:20,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-19 23:48:20,819 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:48:20,819 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-19 23:48:20,827 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 23:48:21,019 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,SelfDestructingSolverStorable17 [2024-11-19 23:48:21,020 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:48:21,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:48:21,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1147902773, now seen corresponding path program 1 times [2024-11-19 23:48:21,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:48:21,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266246981] [2024-11-19 23:48:21,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:48:21,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:48:21,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:48:21,333 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:48:21,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:48:21,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266246981] [2024-11-19 23:48:21,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266246981] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 23:48:21,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672669780] [2024-11-19 23:48:21,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:48:21,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 23:48:21,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 23:48:21,337 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 23:48:21,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 23:48:21,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:48:21,438 INFO L255 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-19 23:48:21,440 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 23:48:22,105 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:48:22,105 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 23:48:22,957 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:48:22,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672669780] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 23:48:22,957 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 23:48:22,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 32 [2024-11-19 23:48:22,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258897425] [2024-11-19 23:48:22,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 23:48:22,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-19 23:48:22,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:48:22,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-19 23:48:22,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=887, Unknown=0, NotChecked=0, Total=992 [2024-11-19 23:48:22,959 INFO L87 Difference]: Start difference. First operand 6156 states and 8533 transitions. Second operand has 32 states, 32 states have (on average 4.9375) internal successors, (158), 32 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:48:25,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:48:25,996 INFO L93 Difference]: Finished difference Result 16403 states and 21329 transitions. [2024-11-19 23:48:25,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-19 23:48:25,997 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.9375) internal successors, (158), 32 states have internal predecessors, (158), 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 62 [2024-11-19 23:48:25,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:48:26,022 INFO L225 Difference]: With dead ends: 16403 [2024-11-19 23:48:26,022 INFO L226 Difference]: Without dead ends: 12305 [2024-11-19 23:48:26,033 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1630 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1214, Invalid=5592, Unknown=0, NotChecked=0, Total=6806 [2024-11-19 23:48:26,033 INFO L432 NwaCegarLoop]: 1508 mSDtfsCounter, 14006 mSDsluCounter, 15506 mSDsCounter, 0 mSdLazyCounter, 946 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14006 SdHoareTripleChecker+Valid, 17014 SdHoareTripleChecker+Invalid, 994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 23:48:26,034 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14006 Valid, 17014 Invalid, 994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 946 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 23:48:26,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12305 states. [2024-11-19 23:48:26,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12305 to 8355. [2024-11-19 23:48:26,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8355 states, 8353 states have (on average 1.338680713516102) internal successors, (11182), 8354 states have internal predecessors, (11182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:48:26,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8355 states to 8355 states and 11182 transitions. [2024-11-19 23:48:26,299 INFO L78 Accepts]: Start accepts. Automaton has 8355 states and 11182 transitions. Word has length 62 [2024-11-19 23:48:26,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:48:26,299 INFO L471 AbstractCegarLoop]: Abstraction has 8355 states and 11182 transitions. [2024-11-19 23:48:26,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.9375) internal successors, (158), 32 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:48:26,299 INFO L276 IsEmpty]: Start isEmpty. Operand 8355 states and 11182 transitions. [2024-11-19 23:48:26,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-19 23:48:26,300 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:48:26,300 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 23:48:26,313 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 23:48:26,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 23:48:26,505 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:48:26,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:48:26,505 INFO L85 PathProgramCache]: Analyzing trace with hash 807603108, now seen corresponding path program 1 times [2024-11-19 23:48:26,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:48:26,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779268733] [2024-11-19 23:48:26,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:48:26,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:48:26,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:48:26,835 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:48:26,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:48:26,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779268733] [2024-11-19 23:48:26,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779268733] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 23:48:26,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320656307] [2024-11-19 23:48:26,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:48:26,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 23:48:26,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 23:48:26,838 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 23:48:26,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 23:48:26,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:48:26,936 INFO L255 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-19 23:48:26,939 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 23:48:28,119 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:48:28,119 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 23:48:28,836 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:48:28,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320656307] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 23:48:28,836 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 23:48:28,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 26 [2024-11-19 23:48:28,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253111823] [2024-11-19 23:48:28,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 23:48:28,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-19 23:48:28,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:48:28,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-19 23:48:28,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=590, Unknown=0, NotChecked=0, Total=702 [2024-11-19 23:48:28,838 INFO L87 Difference]: Start difference. First operand 8355 states and 11182 transitions. Second operand has 27 states, 27 states have (on average 6.111111111111111) internal successors, (165), 26 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) [2024-11-19 23:48:30,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:48:30,199 INFO L93 Difference]: Finished difference Result 17081 states and 22024 transitions. [2024-11-19 23:48:30,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-19 23:48:30,200 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 6.111111111111111) internal successors, (165), 26 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 63 [2024-11-19 23:48:30,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:48:30,215 INFO L225 Difference]: With dead ends: 17081 [2024-11-19 23:48:30,216 INFO L226 Difference]: Without dead ends: 11437 [2024-11-19 23:48:30,226 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 549 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=637, Invalid=2015, Unknown=0, NotChecked=0, Total=2652 [2024-11-19 23:48:30,227 INFO L432 NwaCegarLoop]: 1514 mSDtfsCounter, 23058 mSDsluCounter, 6516 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23058 SdHoareTripleChecker+Valid, 8030 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 23:48:30,227 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23058 Valid, 8030 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 23:48:30,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11437 states. [2024-11-19 23:48:30,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11437 to 10831. [2024-11-19 23:48:30,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10831 states, 10829 states have (on average 1.3042755563763968) internal successors, (14124), 10830 states have internal predecessors, (14124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:48:30,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10831 states to 10831 states and 14124 transitions. [2024-11-19 23:48:30,569 INFO L78 Accepts]: Start accepts. Automaton has 10831 states and 14124 transitions. Word has length 63 [2024-11-19 23:48:30,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:48:30,569 INFO L471 AbstractCegarLoop]: Abstraction has 10831 states and 14124 transitions. [2024-11-19 23:48:30,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 6.111111111111111) internal successors, (165), 26 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) [2024-11-19 23:48:30,570 INFO L276 IsEmpty]: Start isEmpty. Operand 10831 states and 14124 transitions. [2024-11-19 23:48:30,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-19 23:48:30,571 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:48:30,571 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-19 23:48:30,579 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 23:48:30,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 23:48:30,775 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:48:30,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:48:30,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1786741782, now seen corresponding path program 1 times [2024-11-19 23:48:30,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:48:30,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413226280] [2024-11-19 23:48:30,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:48:30,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:48:30,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:48:32,154 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:48:32,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:48:32,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413226280] [2024-11-19 23:48:32,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413226280] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 23:48:32,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004998761] [2024-11-19 23:48:32,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:48:32,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 23:48:32,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 23:48:32,157 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 23:48:32,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 23:48:32,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:48:32,299 INFO L255 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-19 23:48:32,301 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 23:48:34,939 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:48:34,939 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 23:48:36,363 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:48:36,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004998761] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 23:48:36,364 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 23:48:36,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18, 15] total 51 [2024-11-19 23:48:36,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847316438] [2024-11-19 23:48:36,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 23:48:36,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-19 23:48:36,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:48:36,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-19 23:48:36,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=2308, Unknown=0, NotChecked=0, Total=2550 [2024-11-19 23:48:36,367 INFO L87 Difference]: Start difference. First operand 10831 states and 14124 transitions. Second operand has 51 states, 51 states have (on average 3.411764705882353) internal successors, (174), 51 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:48:54,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:48:54,869 INFO L93 Difference]: Finished difference Result 21138 states and 26707 transitions. [2024-11-19 23:48:54,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2024-11-19 23:48:54,870 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 3.411764705882353) internal successors, (174), 51 states have internal predecessors, (174), 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 63 [2024-11-19 23:48:54,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:48:54,896 INFO L225 Difference]: With dead ends: 21138 [2024-11-19 23:48:54,896 INFO L226 Difference]: Without dead ends: 17394 [2024-11-19 23:48:54,911 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6022 ImplicationChecksByTransitivity, 18.0s TimeCoverageRelationStatistics Valid=4194, Invalid=16398, Unknown=0, NotChecked=0, Total=20592 [2024-11-19 23:48:54,912 INFO L432 NwaCegarLoop]: 1542 mSDtfsCounter, 26465 mSDsluCounter, 16423 mSDsCounter, 0 mSdLazyCounter, 2222 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26465 SdHoareTripleChecker+Valid, 17965 SdHoareTripleChecker+Invalid, 2360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 2222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-19 23:48:54,912 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26465 Valid, 17965 Invalid, 2360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 2222 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-19 23:48:54,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17394 states. [2024-11-19 23:48:55,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17394 to 13947. [2024-11-19 23:48:55,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13947 states, 13945 states have (on average 1.289709573323772) internal successors, (17985), 13946 states have internal predecessors, (17985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:48:55,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13947 states to 13947 states and 17985 transitions. [2024-11-19 23:48:55,593 INFO L78 Accepts]: Start accepts. Automaton has 13947 states and 17985 transitions. Word has length 63 [2024-11-19 23:48:55,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:48:55,594 INFO L471 AbstractCegarLoop]: Abstraction has 13947 states and 17985 transitions. [2024-11-19 23:48:55,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 3.411764705882353) internal successors, (174), 51 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:48:55,594 INFO L276 IsEmpty]: Start isEmpty. Operand 13947 states and 17985 transitions. [2024-11-19 23:48:55,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-19 23:48:55,595 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:48:55,595 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-19 23:48:55,604 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-19 23:48:55,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 23:48:55,796 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:48:55,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:48:55,797 INFO L85 PathProgramCache]: Analyzing trace with hash 532152701, now seen corresponding path program 1 times [2024-11-19 23:48:55,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:48:55,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480950315] [2024-11-19 23:48:55,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:48:55,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:48:55,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:48:56,698 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:48:56,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:48:56,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480950315] [2024-11-19 23:48:56,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480950315] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 23:48:56,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797092445] [2024-11-19 23:48:56,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:48:56,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 23:48:56,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 23:48:56,702 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 23:48:56,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 23:48:56,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:48:56,803 INFO L255 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-19 23:48:56,805 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 23:48:57,787 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:48:57,788 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 23:48:58,337 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:48:58,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797092445] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 23:48:58,337 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 23:48:58,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 12] total 34 [2024-11-19 23:48:58,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067902760] [2024-11-19 23:48:58,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 23:48:58,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-19 23:48:58,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:48:58,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-19 23:48:58,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=985, Unknown=0, NotChecked=0, Total=1122 [2024-11-19 23:48:58,339 INFO L87 Difference]: Start difference. First operand 13947 states and 17985 transitions. Second operand has 34 states, 34 states have (on average 5.0) internal successors, (170), 34 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:49:00,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:49:00,743 INFO L93 Difference]: Finished difference Result 18807 states and 23911 transitions. [2024-11-19 23:49:00,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-19 23:49:00,743 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.0) internal successors, (170), 34 states have internal predecessors, (170), 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 64 [2024-11-19 23:49:00,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:49:00,756 INFO L225 Difference]: With dead ends: 18807 [2024-11-19 23:49:00,756 INFO L226 Difference]: Without dead ends: 13060 [2024-11-19 23:49:00,763 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 694 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=822, Invalid=2960, Unknown=0, NotChecked=0, Total=3782 [2024-11-19 23:49:00,763 INFO L432 NwaCegarLoop]: 1517 mSDtfsCounter, 14417 mSDsluCounter, 15499 mSDsCounter, 0 mSdLazyCounter, 992 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14417 SdHoareTripleChecker+Valid, 17016 SdHoareTripleChecker+Invalid, 1025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 23:49:00,764 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14417 Valid, 17016 Invalid, 1025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 992 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 23:49:00,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13060 states. [2024-11-19 23:49:01,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13060 to 10942. [2024-11-19 23:49:01,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10942 states, 10940 states have (on average 1.3036563071297989) internal successors, (14262), 10941 states have internal predecessors, (14262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:49:01,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10942 states to 10942 states and 14262 transitions. [2024-11-19 23:49:01,253 INFO L78 Accepts]: Start accepts. Automaton has 10942 states and 14262 transitions. Word has length 64 [2024-11-19 23:49:01,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:49:01,253 INFO L471 AbstractCegarLoop]: Abstraction has 10942 states and 14262 transitions. [2024-11-19 23:49:01,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.0) internal successors, (170), 34 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:49:01,253 INFO L276 IsEmpty]: Start isEmpty. Operand 10942 states and 14262 transitions. [2024-11-19 23:49:01,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-19 23:49:01,254 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:49:01,254 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 23:49:01,263 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-19 23:49:01,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 23:49:01,459 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:49:01,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:49:01,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1624666796, now seen corresponding path program 1 times [2024-11-19 23:49:01,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:49:01,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140358743] [2024-11-19 23:49:01,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:49:01,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:49:01,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:49:03,046 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:49:03,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:49:03,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140358743] [2024-11-19 23:49:03,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140358743] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 23:49:03,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503715200] [2024-11-19 23:49:03,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:49:03,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 23:49:03,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 23:49:03,049 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 23:49:03,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 23:49:03,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:49:03,138 INFO L255 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-19 23:49:03,140 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 23:49:03,641 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:49:03,641 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 23:49:04,670 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:49:04,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503715200] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 23:49:04,670 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 23:49:04,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 12, 12] total 42 [2024-11-19 23:49:04,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608065225] [2024-11-19 23:49:04,670 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 23:49:04,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-19 23:49:04,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:49:04,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-19 23:49:04,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1593, Unknown=0, NotChecked=0, Total=1722 [2024-11-19 23:49:04,672 INFO L87 Difference]: Start difference. First operand 10942 states and 14262 transitions. Second operand has 42 states, 42 states have (on average 3.880952380952381) internal successors, (163), 42 states have internal predecessors, (163), 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)