./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label02.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label02.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 6325d9fccdba44ffb7ef0e133bfabfb6d285a7f8e20c4133b9b681e02437a24c --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-08 16:54:10,245 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 16:54:10,303 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 16:54:10,306 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 16:54:10,307 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 16:54:10,333 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 16:54:10,334 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 16:54:10,334 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 16:54:10,334 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 16:54:10,336 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 16:54:10,336 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 16:54:10,336 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 16:54:10,337 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 16:54:10,339 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 16:54:10,339 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 16:54:10,340 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 16:54:10,340 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 16:54:10,340 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 16:54:10,340 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 16:54:10,340 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 16:54:10,340 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 16:54:10,341 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 16:54:10,341 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 16:54:10,341 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 16:54:10,341 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 16:54:10,342 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 16:54:10,342 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 16:54:10,342 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 16:54:10,343 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 16:54:10,343 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 16:54:10,343 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 16:54:10,344 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 16:54:10,344 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:54:10,344 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 16:54:10,345 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 16:54:10,345 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 16:54:10,345 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 16:54:10,345 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 16:54:10,347 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 16:54:10,347 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 16:54:10,347 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 16:54:10,347 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 16:54:10,347 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6325d9fccdba44ffb7ef0e133bfabfb6d285a7f8e20c4133b9b681e02437a24c [2024-11-08 16:54:10,527 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 16:54:10,544 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 16:54:10,546 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 16:54:10,547 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 16:54:10,548 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 16:54:10,549 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label02.c [2024-11-08 16:54:11,937 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 16:54:12,569 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 16:54:12,570 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label02.c [2024-11-08 16:54:12,606 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8741c0b0/e4621795e1764d3098b0f2b1f3ab09d7/FLAG4d781716a [2024-11-08 16:54:13,039 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8741c0b0/e4621795e1764d3098b0f2b1f3ab09d7 [2024-11-08 16:54:13,042 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 16:54:13,043 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 16:54:13,047 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 16:54:13,047 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 16:54:13,052 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 16:54:13,053 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:54:13" (1/1) ... [2024-11-08 16:54:13,055 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@682d16ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:54:13, skipping insertion in model container [2024-11-08 16:54:13,056 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:54:13" (1/1) ... [2024-11-08 16:54:13,251 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 16:54:13,459 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.3.1.ufo.UNBOUNDED.pals+Problem12_label02.c[6487,6500] [2024-11-08 16:54:13,497 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.3.1.ufo.UNBOUNDED.pals+Problem12_label02.c[13777,13790] [2024-11-08 16:54:14,038 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:54:14,048 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 16:54:14,081 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.3.1.ufo.UNBOUNDED.pals+Problem12_label02.c[6487,6500] [2024-11-08 16:54:14,092 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.3.1.ufo.UNBOUNDED.pals+Problem12_label02.c[13777,13790] [2024-11-08 16:54:14,408 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:54:14,433 INFO L204 MainTranslator]: Completed translation [2024-11-08 16:54:14,434 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:54:14 WrapperNode [2024-11-08 16:54:14,434 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 16:54:14,435 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 16:54:14,435 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 16:54:14,436 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 16:54:14,441 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:54:14" (1/1) ... [2024-11-08 16:54:14,486 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:54:14" (1/1) ... [2024-11-08 16:54:14,832 INFO L138 Inliner]: procedures = 35, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 4984 [2024-11-08 16:54:14,833 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 16:54:14,834 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 16:54:14,834 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 16:54:14,834 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 16:54:14,843 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:54:14" (1/1) ... [2024-11-08 16:54:14,843 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:54:14" (1/1) ... [2024-11-08 16:54:14,888 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:54:14" (1/1) ... [2024-11-08 16:54:14,989 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]. [2024-11-08 16:54:14,990 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:54:14" (1/1) ... [2024-11-08 16:54:14,990 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:54:14" (1/1) ... [2024-11-08 16:54:15,126 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:54:14" (1/1) ... [2024-11-08 16:54:15,152 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:54:14" (1/1) ... [2024-11-08 16:54:15,170 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:54:14" (1/1) ... [2024-11-08 16:54:15,188 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:54:14" (1/1) ... [2024-11-08 16:54:15,234 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 16:54:15,235 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 16:54:15,236 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 16:54:15,236 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 16:54:15,237 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:54:14" (1/1) ... [2024-11-08 16:54:15,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:54:15,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 16:54:15,272 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) [2024-11-08 16:54:15,278 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 [2024-11-08 16:54:15,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 16:54:15,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 16:54:15,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 16:54:15,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 16:54:15,444 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 16:54:15,446 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 16:54:18,686 INFO L? ?]: Removed 734 outVars from TransFormulas that were not future-live. [2024-11-08 16:54:18,686 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 16:54:18,723 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 16:54:18,726 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-08 16:54:18,727 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:54:18 BoogieIcfgContainer [2024-11-08 16:54:18,727 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 16:54:18,729 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 16:54:18,729 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 16:54:18,732 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 16:54:18,732 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 04:54:13" (1/3) ... [2024-11-08 16:54:18,733 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75326719 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:54:18, skipping insertion in model container [2024-11-08 16:54:18,733 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:54:14" (2/3) ... [2024-11-08 16:54:18,733 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75326719 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:54:18, skipping insertion in model container [2024-11-08 16:54:18,733 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:54:18" (3/3) ... [2024-11-08 16:54:18,734 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label02.c [2024-11-08 16:54:18,751 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 16:54:18,751 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-08 16:54:18,831 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 16:54:18,843 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;@4df59894, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 16:54:18,847 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-08 16:54:18,859 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) [2024-11-08 16:54:18,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-08 16:54:18,866 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:54:18,867 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] [2024-11-08 16:54:18,867 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:54:18,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:54:18,872 INFO L85 PathProgramCache]: Analyzing trace with hash -934405548, now seen corresponding path program 1 times [2024-11-08 16:54:18,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:54:18,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013064236] [2024-11-08 16:54:18,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:54:18,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:54:19,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:54:19,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:54:19,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:54:19,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013064236] [2024-11-08 16:54:19,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013064236] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:54:19,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:54:19,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 16:54:19,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591115602] [2024-11-08 16:54:19,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:54:19,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 16:54:19,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:54:19,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 16:54:19,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 16:54:19,181 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) [2024-11-08 16:54:19,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:54:19,265 INFO L93 Difference]: Finished difference Result 1724 states and 3278 transitions. [2024-11-08 16:54:19,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 16:54:19,268 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 [2024-11-08 16:54:19,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:54:19,281 INFO L225 Difference]: With dead ends: 1724 [2024-11-08 16:54:19,281 INFO L226 Difference]: Without dead ends: 808 [2024-11-08 16:54:19,291 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 [2024-11-08 16:54:19,293 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 [2024-11-08 16:54:19,294 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] [2024-11-08 16:54:19,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2024-11-08 16:54:19,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 808. [2024-11-08 16:54:19,355 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) [2024-11-08 16:54:19,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1527 transitions. [2024-11-08 16:54:19,359 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1527 transitions. Word has length 20 [2024-11-08 16:54:19,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:54:19,359 INFO L471 AbstractCegarLoop]: Abstraction has 808 states and 1527 transitions. [2024-11-08 16:54:19,359 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) [2024-11-08 16:54:19,359 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1527 transitions. [2024-11-08 16:54:19,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-08 16:54:19,360 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:54:19,360 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] [2024-11-08 16:54:19,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 16:54:19,361 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:54:19,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:54:19,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1945522798, now seen corresponding path program 1 times [2024-11-08 16:54:19,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:54:19,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613366964] [2024-11-08 16:54:19,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:54:19,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:54:19,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:54:19,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:54:19,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:54:19,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613366964] [2024-11-08 16:54:19,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613366964] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:54:19,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:54:19,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 16:54:19,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193957074] [2024-11-08 16:54:19,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:54:19,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:54:19,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:54:19,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:54:19,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:54:19,531 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) [2024-11-08 16:54:19,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:54:19,594 INFO L93 Difference]: Finished difference Result 844 states and 1581 transitions. [2024-11-08 16:54:19,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:54:19,595 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 [2024-11-08 16:54:19,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:54:19,598 INFO L225 Difference]: With dead ends: 844 [2024-11-08 16:54:19,599 INFO L226 Difference]: Without dead ends: 808 [2024-11-08 16:54:19,599 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 [2024-11-08 16:54:19,600 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, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:54:19,601 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6079 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:54:19,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2024-11-08 16:54:19,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 808. [2024-11-08 16:54:19,619 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) [2024-11-08 16:54:19,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1511 transitions. [2024-11-08 16:54:19,621 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1511 transitions. Word has length 20 [2024-11-08 16:54:19,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:54:19,621 INFO L471 AbstractCegarLoop]: Abstraction has 808 states and 1511 transitions. [2024-11-08 16:54:19,621 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) [2024-11-08 16:54:19,621 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1511 transitions. [2024-11-08 16:54:19,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-08 16:54:19,622 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:54:19,622 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] [2024-11-08 16:54:19,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 16:54:19,623 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:54:19,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:54:19,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1226597962, now seen corresponding path program 1 times [2024-11-08 16:54:19,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:54:19,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406610915] [2024-11-08 16:54:19,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:54:19,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:54:19,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:54:19,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:54:19,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:54:19,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406610915] [2024-11-08 16:54:19,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406610915] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:54:19,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:54:19,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 16:54:19,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816375620] [2024-11-08 16:54:19,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:54:19,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:54:19,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:54:19,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:54:19,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:54:19,728 INFO L87 Difference]: Start difference. First operand 808 states and 1511 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) [2024-11-08 16:54:19,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:54:19,815 INFO L93 Difference]: Finished difference Result 1000 states and 1811 transitions. [2024-11-08 16:54:19,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 16:54:19,816 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 [2024-11-08 16:54:19,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:54:19,819 INFO L225 Difference]: With dead ends: 1000 [2024-11-08 16:54:19,820 INFO L226 Difference]: Without dead ends: 968 [2024-11-08 16:54:19,820 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 [2024-11-08 16:54:19,821 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, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:54:19,821 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4682 Valid, 1758 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:54:19,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2024-11-08 16:54:19,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 838. [2024-11-08 16:54:19,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 836 states have (on average 1.8636363636363635) internal successors, (1558), 837 states have internal predecessors, (1558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:54:19,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1558 transitions. [2024-11-08 16:54:19,836 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1558 transitions. Word has length 35 [2024-11-08 16:54:19,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:54:19,837 INFO L471 AbstractCegarLoop]: Abstraction has 838 states and 1558 transitions. [2024-11-08 16:54:19,837 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) [2024-11-08 16:54:19,837 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1558 transitions. [2024-11-08 16:54:19,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-08 16:54:19,838 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:54:19,838 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] [2024-11-08 16:54:19,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 16:54:19,838 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:54:19,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:54:19,839 INFO L85 PathProgramCache]: Analyzing trace with hash 523901274, now seen corresponding path program 1 times [2024-11-08 16:54:19,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:54:19,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584158058] [2024-11-08 16:54:19,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:54:19,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:54:19,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:54:19,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:54:19,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:54:19,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584158058] [2024-11-08 16:54:19,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584158058] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:54:19,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:54:19,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:54:19,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631581455] [2024-11-08 16:54:19,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:54:19,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:54:19,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:54:19,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:54:19,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:54:19,891 INFO L87 Difference]: Start difference. First operand 838 states and 1558 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) [2024-11-08 16:54:19,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:54:19,916 INFO L93 Difference]: Finished difference Result 951 states and 1733 transitions. [2024-11-08 16:54:19,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:54:19,916 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 [2024-11-08 16:54:19,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:54:19,919 INFO L225 Difference]: With dead ends: 951 [2024-11-08 16:54:19,919 INFO L226 Difference]: Without dead ends: 889 [2024-11-08 16:54:19,919 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 [2024-11-08 16:54:19,920 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 [2024-11-08 16:54:19,921 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] [2024-11-08 16:54:19,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2024-11-08 16:54:19,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 885. [2024-11-08 16:54:19,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 883 states have (on average 1.8437146092865233) internal successors, (1628), 884 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:54:19,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1628 transitions. [2024-11-08 16:54:19,934 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1628 transitions. Word has length 37 [2024-11-08 16:54:19,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:54:19,935 INFO L471 AbstractCegarLoop]: Abstraction has 885 states and 1628 transitions. [2024-11-08 16:54:19,935 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) [2024-11-08 16:54:19,935 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1628 transitions. [2024-11-08 16:54:19,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-08 16:54:19,936 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:54:19,936 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] [2024-11-08 16:54:19,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 16:54:19,937 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:54:19,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:54:19,937 INFO L85 PathProgramCache]: Analyzing trace with hash 590394786, now seen corresponding path program 1 times [2024-11-08 16:54:19,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:54:19,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246227720] [2024-11-08 16:54:19,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:54:19,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:54:19,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:54:20,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:54:20,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:54:20,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246227720] [2024-11-08 16:54:20,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246227720] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:54:20,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:54:20,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 16:54:20,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048885466] [2024-11-08 16:54:20,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:54:20,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:54:20,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:54:20,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:54:20,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:54:20,065 INFO L87 Difference]: Start difference. First operand 885 states and 1628 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) [2024-11-08 16:54:20,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:54:20,125 INFO L93 Difference]: Finished difference Result 996 states and 1796 transitions. [2024-11-08 16:54:20,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:54:20,125 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 [2024-11-08 16:54:20,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:54:20,129 INFO L225 Difference]: With dead ends: 996 [2024-11-08 16:54:20,129 INFO L226 Difference]: Without dead ends: 887 [2024-11-08 16:54:20,129 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-08 16:54:20,131 INFO L432 NwaCegarLoop]: 1506 mSDtfsCounter, 2952 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2952 SdHoareTripleChecker+Valid, 1598 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:54:20,131 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2952 Valid, 1598 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:54:20,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2024-11-08 16:54:20,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 885. [2024-11-08 16:54:20,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 883 states have (on average 1.8414496036240091) internal successors, (1626), 884 states have internal predecessors, (1626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:54:20,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1626 transitions. [2024-11-08 16:54:20,150 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1626 transitions. Word has length 37 [2024-11-08 16:54:20,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:54:20,152 INFO L471 AbstractCegarLoop]: Abstraction has 885 states and 1626 transitions. [2024-11-08 16:54:20,152 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) [2024-11-08 16:54:20,153 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1626 transitions. [2024-11-08 16:54:20,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-08 16:54:20,156 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:54:20,157 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] [2024-11-08 16:54:20,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 16:54:20,157 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:54:20,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:54:20,158 INFO L85 PathProgramCache]: Analyzing trace with hash 707645968, now seen corresponding path program 1 times [2024-11-08 16:54:20,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:54:20,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441298357] [2024-11-08 16:54:20,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:54:20,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:54:20,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:54:20,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:54:20,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:54:20,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441298357] [2024-11-08 16:54:20,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441298357] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:54:20,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:54:20,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-08 16:54:20,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333202657] [2024-11-08 16:54:20,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:54:20,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 16:54:20,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:54:20,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 16:54:20,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-08 16:54:20,360 INFO L87 Difference]: Start difference. First operand 885 states and 1626 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) [2024-11-08 16:54:20,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:54:20,436 INFO L93 Difference]: Finished difference Result 893 states and 1635 transitions. [2024-11-08 16:54:20,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 16:54:20,439 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 [2024-11-08 16:54:20,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:54:20,442 INFO L225 Difference]: With dead ends: 893 [2024-11-08 16:54:20,442 INFO L226 Difference]: Without dead ends: 891 [2024-11-08 16:54:20,444 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 [2024-11-08 16:54:20,444 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 [2024-11-08 16:54:20,445 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] [2024-11-08 16:54:20,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2024-11-08 16:54:20,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 891. [2024-11-08 16:54:20,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 891 states, 889 states have (on average 1.8346456692913387) internal successors, (1631), 890 states have internal predecessors, (1631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:54:20,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1631 transitions. [2024-11-08 16:54:20,467 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1631 transitions. Word has length 38 [2024-11-08 16:54:20,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:54:20,467 INFO L471 AbstractCegarLoop]: Abstraction has 891 states and 1631 transitions. [2024-11-08 16:54:20,467 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) [2024-11-08 16:54:20,467 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1631 transitions. [2024-11-08 16:54:20,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-08 16:54:20,469 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:54:20,469 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] [2024-11-08 16:54:20,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 16:54:20,470 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:54:20,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:54:20,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1903217474, now seen corresponding path program 1 times [2024-11-08 16:54:20,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:54:20,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304262668] [2024-11-08 16:54:20,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:54:20,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:54:20,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:54:20,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:54:20,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:54:20,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304262668] [2024-11-08 16:54:20,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304262668] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:54:20,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:54:20,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:54:20,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000637915] [2024-11-08 16:54:20,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:54:20,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:54:20,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:54:20,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:54:20,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:54:20,525 INFO L87 Difference]: Start difference. First operand 891 states and 1631 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) [2024-11-08 16:54:20,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:54:20,546 INFO L93 Difference]: Finished difference Result 1105 states and 1943 transitions. [2024-11-08 16:54:20,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:54:20,547 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 [2024-11-08 16:54:20,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:54:20,550 INFO L225 Difference]: With dead ends: 1105 [2024-11-08 16:54:20,550 INFO L226 Difference]: Without dead ends: 990 [2024-11-08 16:54:20,551 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 [2024-11-08 16:54:20,553 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 [2024-11-08 16:54:20,553 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] [2024-11-08 16:54:20,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2024-11-08 16:54:20,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 988. [2024-11-08 16:54:20,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 988 states, 986 states have (on average 1.793103448275862) internal successors, (1768), 987 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:54:20,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 1768 transitions. [2024-11-08 16:54:20,571 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 1768 transitions. Word has length 39 [2024-11-08 16:54:20,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:54:20,573 INFO L471 AbstractCegarLoop]: Abstraction has 988 states and 1768 transitions. [2024-11-08 16:54:20,573 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) [2024-11-08 16:54:20,573 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 1768 transitions. [2024-11-08 16:54:20,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-08 16:54:20,573 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:54:20,574 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] [2024-11-08 16:54:20,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 16:54:20,574 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:54:20,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:54:20,574 INFO L85 PathProgramCache]: Analyzing trace with hash 122284610, now seen corresponding path program 1 times [2024-11-08 16:54:20,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:54:20,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243540935] [2024-11-08 16:54:20,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:54:20,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:54:20,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:54:20,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:54:20,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:54:20,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243540935] [2024-11-08 16:54:20,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243540935] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:54:20,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:54:20,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:54:20,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860582464] [2024-11-08 16:54:20,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:54:20,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:54:20,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:54:20,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:54:20,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:54:20,617 INFO L87 Difference]: Start difference. First operand 988 states and 1768 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) [2024-11-08 16:54:20,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:54:20,647 INFO L93 Difference]: Finished difference Result 1380 states and 2326 transitions. [2024-11-08 16:54:20,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:54:20,647 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 [2024-11-08 16:54:20,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:54:20,651 INFO L225 Difference]: With dead ends: 1380 [2024-11-08 16:54:20,651 INFO L226 Difference]: Without dead ends: 1168 [2024-11-08 16:54:20,652 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 [2024-11-08 16:54:20,653 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 [2024-11-08 16:54:20,655 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] [2024-11-08 16:54:20,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2024-11-08 16:54:20,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1166. [2024-11-08 16:54:20,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1166 states, 1164 states have (on average 1.7268041237113403) internal successors, (2010), 1165 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:54:20,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 2010 transitions. [2024-11-08 16:54:20,677 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 2010 transitions. Word has length 39 [2024-11-08 16:54:20,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:54:20,677 INFO L471 AbstractCegarLoop]: Abstraction has 1166 states and 2010 transitions. [2024-11-08 16:54:20,677 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) [2024-11-08 16:54:20,678 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 2010 transitions. [2024-11-08 16:54:20,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-08 16:54:20,678 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:54:20,678 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:54:20,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 16:54:20,678 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:54:20,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:54:20,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1688735299, now seen corresponding path program 1 times [2024-11-08 16:54:20,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:54:20,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839122518] [2024-11-08 16:54:20,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:54:20,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:54:20,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:54:20,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:54:20,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:54:20,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839122518] [2024-11-08 16:54:20,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839122518] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:54:20,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:54:20,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:54:20,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411680353] [2024-11-08 16:54:20,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:54:20,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:54:20,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:54:20,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:54:20,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:54:20,792 INFO L87 Difference]: Start difference. First operand 1166 states and 2010 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) [2024-11-08 16:54:20,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:54:20,820 INFO L93 Difference]: Finished difference Result 1589 states and 2616 transitions. [2024-11-08 16:54:20,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:54:20,820 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 [2024-11-08 16:54:20,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:54:20,825 INFO L225 Difference]: With dead ends: 1589 [2024-11-08 16:54:20,825 INFO L226 Difference]: Without dead ends: 1354 [2024-11-08 16:54:20,826 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 [2024-11-08 16:54:20,827 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 [2024-11-08 16:54:20,827 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] [2024-11-08 16:54:20,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2024-11-08 16:54:20,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1352. [2024-11-08 16:54:20,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1350 states have (on average 1.677037037037037) internal successors, (2264), 1351 states have internal predecessors, (2264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:54:20,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 2264 transitions. [2024-11-08 16:54:20,857 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 2264 transitions. Word has length 41 [2024-11-08 16:54:20,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:54:20,857 INFO L471 AbstractCegarLoop]: Abstraction has 1352 states and 2264 transitions. [2024-11-08 16:54:20,858 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) [2024-11-08 16:54:20,858 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 2264 transitions. [2024-11-08 16:54:20,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-08 16:54:20,858 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:54:20,859 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] [2024-11-08 16:54:20,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-08 16:54:20,859 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:54:20,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:54:20,859 INFO L85 PathProgramCache]: Analyzing trace with hash 923003988, now seen corresponding path program 1 times [2024-11-08 16:54:20,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:54:20,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267910050] [2024-11-08 16:54:20,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:54:20,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:54:20,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:54:20,944 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 16:54:20,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:54:20,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267910050] [2024-11-08 16:54:20,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267910050] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:54:20,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:54:20,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 16:54:20,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850531887] [2024-11-08 16:54:20,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:54:20,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:54:20,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:54:20,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:54:20,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:54:20,947 INFO L87 Difference]: Start difference. First operand 1352 states and 2264 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) [2024-11-08 16:54:21,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:54:21,043 INFO L93 Difference]: Finished difference Result 3208 states and 4844 transitions. [2024-11-08 16:54:21,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:54:21,044 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 [2024-11-08 16:54:21,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:54:21,053 INFO L225 Difference]: With dead ends: 3208 [2024-11-08 16:54:21,053 INFO L226 Difference]: Without dead ends: 2634 [2024-11-08 16:54:21,055 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 [2024-11-08 16:54:21,055 INFO L432 NwaCegarLoop]: 1551 mSDtfsCounter, 3057 mSDsluCounter, 1604 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3057 SdHoareTripleChecker+Valid, 3155 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:54:21,056 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3057 Valid, 3155 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:54:21,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2634 states. [2024-11-08 16:54:21,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2634 to 1924. [2024-11-08 16:54:21,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1924 states, 1922 states have (on average 1.5879292403746097) internal successors, (3052), 1923 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:54:21,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1924 states to 1924 states and 3052 transitions. [2024-11-08 16:54:21,107 INFO L78 Accepts]: Start accepts. Automaton has 1924 states and 3052 transitions. Word has length 54 [2024-11-08 16:54:21,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:54:21,108 INFO L471 AbstractCegarLoop]: Abstraction has 1924 states and 3052 transitions. [2024-11-08 16:54:21,108 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) [2024-11-08 16:54:21,108 INFO L276 IsEmpty]: Start isEmpty. Operand 1924 states and 3052 transitions. [2024-11-08 16:54:21,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-08 16:54:21,109 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:54:21,109 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] [2024-11-08 16:54:21,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-08 16:54:21,110 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:54:21,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:54:21,110 INFO L85 PathProgramCache]: Analyzing trace with hash -857928876, now seen corresponding path program 1 times [2024-11-08 16:54:21,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:54:21,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679060145] [2024-11-08 16:54:21,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:54:21,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:54:21,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:54:21,231 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 16:54:21,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:54:21,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679060145] [2024-11-08 16:54:21,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679060145] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:54:21,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:54:21,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 16:54:21,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35743596] [2024-11-08 16:54:21,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:54:21,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:54:21,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:54:21,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:54:21,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:54:21,237 INFO L87 Difference]: Start difference. First operand 1924 states and 3052 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) [2024-11-08 16:54:21,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:54:21,432 INFO L93 Difference]: Finished difference Result 3780 states and 5632 transitions. [2024-11-08 16:54:21,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:54:21,433 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 [2024-11-08 16:54:21,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:54:21,451 INFO L225 Difference]: With dead ends: 3780 [2024-11-08 16:54:21,455 INFO L226 Difference]: Without dead ends: 3206 [2024-11-08 16:54:21,458 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 [2024-11-08 16:54:21,462 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, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:54:21,462 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3049 Valid, 3170 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:54:21,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3206 states. [2024-11-08 16:54:21,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3206 to 2784. [2024-11-08 16:54:21,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2784 states, 2782 states have (on average 1.518332135154565) internal successors, (4224), 2783 states have internal predecessors, (4224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:54:21,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2784 states to 2784 states and 4224 transitions. [2024-11-08 16:54:21,625 INFO L78 Accepts]: Start accepts. Automaton has 2784 states and 4224 transitions. Word has length 54 [2024-11-08 16:54:21,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:54:21,626 INFO L471 AbstractCegarLoop]: Abstraction has 2784 states and 4224 transitions. [2024-11-08 16:54:21,626 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) [2024-11-08 16:54:21,626 INFO L276 IsEmpty]: Start isEmpty. Operand 2784 states and 4224 transitions. [2024-11-08 16:54:21,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-08 16:54:21,631 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:54:21,631 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] [2024-11-08 16:54:21,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-08 16:54:21,632 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:54:21,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:54:21,632 INFO L85 PathProgramCache]: Analyzing trace with hash 894361900, now seen corresponding path program 1 times [2024-11-08 16:54:21,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:54:21,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626485353] [2024-11-08 16:54:21,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:54:21,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:54:21,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:54:21,748 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:54:21,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:54:21,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626485353] [2024-11-08 16:54:21,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626485353] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:54:21,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:54:21,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:54:21,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045728903] [2024-11-08 16:54:21,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:54:21,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:54:21,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:54:21,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:54:21,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:54:21,751 INFO L87 Difference]: Start difference. First operand 2784 states and 4224 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) [2024-11-08 16:54:21,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:54:21,798 INFO L93 Difference]: Finished difference Result 4260 states and 6287 transitions. [2024-11-08 16:54:21,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:54:21,798 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 [2024-11-08 16:54:21,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:54:21,806 INFO L225 Difference]: With dead ends: 4260 [2024-11-08 16:54:21,806 INFO L226 Difference]: Without dead ends: 2254 [2024-11-08 16:54:21,809 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 [2024-11-08 16:54:21,810 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 [2024-11-08 16:54:21,810 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] [2024-11-08 16:54:21,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2254 states. [2024-11-08 16:54:21,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2254 to 2252. [2024-11-08 16:54:21,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2252 states, 2250 states have (on average 1.5537777777777777) internal successors, (3496), 2251 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:54:21,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2252 states to 2252 states and 3496 transitions. [2024-11-08 16:54:21,865 INFO L78 Accepts]: Start accepts. Automaton has 2252 states and 3496 transitions. Word has length 56 [2024-11-08 16:54:21,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:54:21,865 INFO L471 AbstractCegarLoop]: Abstraction has 2252 states and 3496 transitions. [2024-11-08 16:54:21,866 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) [2024-11-08 16:54:21,866 INFO L276 IsEmpty]: Start isEmpty. Operand 2252 states and 3496 transitions. [2024-11-08 16:54:21,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-08 16:54:21,866 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:54:21,867 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] [2024-11-08 16:54:21,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-08 16:54:21,867 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:54:21,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:54:21,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1218909775, now seen corresponding path program 1 times [2024-11-08 16:54:21,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:54:21,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040510840] [2024-11-08 16:54:21,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:54:21,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:54:21,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:54:21,969 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 16:54:21,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:54:21,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040510840] [2024-11-08 16:54:21,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040510840] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:54:21,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:54:21,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 16:54:21,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322077684] [2024-11-08 16:54:21,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:54:21,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:54:21,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:54:21,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:54:21,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:54:21,971 INFO L87 Difference]: Start difference. First operand 2252 states and 3496 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) [2024-11-08 16:54:22,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:54:22,065 INFO L93 Difference]: Finished difference Result 3508 states and 5252 transitions. [2024-11-08 16:54:22,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:54:22,065 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 [2024-11-08 16:54:22,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:54:22,074 INFO L225 Difference]: With dead ends: 3508 [2024-11-08 16:54:22,074 INFO L226 Difference]: Without dead ends: 3090 [2024-11-08 16:54:22,076 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 [2024-11-08 16:54:22,078 INFO L432 NwaCegarLoop]: 1549 mSDtfsCounter, 3051 mSDsluCounter, 1598 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3051 SdHoareTripleChecker+Valid, 3147 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:54:22,078 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3051 Valid, 3147 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:54:22,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3090 states. [2024-11-08 16:54:22,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3090 to 2668. [2024-11-08 16:54:22,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2668 states, 2666 states have (on average 1.5273818454613652) internal successors, (4072), 2667 states have internal predecessors, (4072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:54:22,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2668 states to 2668 states and 4072 transitions. [2024-11-08 16:54:22,153 INFO L78 Accepts]: Start accepts. Automaton has 2668 states and 4072 transitions. Word has length 56 [2024-11-08 16:54:22,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:54:22,154 INFO L471 AbstractCegarLoop]: Abstraction has 2668 states and 4072 transitions. [2024-11-08 16:54:22,154 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) [2024-11-08 16:54:22,154 INFO L276 IsEmpty]: Start isEmpty. Operand 2668 states and 4072 transitions. [2024-11-08 16:54:22,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-08 16:54:22,155 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:54:22,156 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] [2024-11-08 16:54:22,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-08 16:54:22,156 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:54:22,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:54:22,157 INFO L85 PathProgramCache]: Analyzing trace with hash -877348108, now seen corresponding path program 1 times [2024-11-08 16:54:22,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:54:22,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338799513] [2024-11-08 16:54:22,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:54:22,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:54:22,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:54:22,237 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:54:22,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:54:22,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338799513] [2024-11-08 16:54:22,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338799513] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:54:22,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:54:22,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:54:22,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465212719] [2024-11-08 16:54:22,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:54:22,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:54:22,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:54:22,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:54:22,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:54:22,239 INFO L87 Difference]: Start difference. First operand 2668 states and 4072 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) [2024-11-08 16:54:22,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:54:22,267 INFO L93 Difference]: Finished difference Result 3608 states and 5370 transitions. [2024-11-08 16:54:22,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:54:22,268 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 [2024-11-08 16:54:22,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:54:22,273 INFO L225 Difference]: With dead ends: 3608 [2024-11-08 16:54:22,273 INFO L226 Difference]: Without dead ends: 1734 [2024-11-08 16:54:22,275 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 [2024-11-08 16:54:22,275 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 [2024-11-08 16:54:22,276 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] [2024-11-08 16:54:22,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1734 states. [2024-11-08 16:54:22,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1734 to 1732. [2024-11-08 16:54:22,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1732 states, 1730 states have (on average 1.5942196531791908) internal successors, (2758), 1731 states have internal predecessors, (2758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:54:22,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1732 states to 1732 states and 2758 transitions. [2024-11-08 16:54:22,371 INFO L78 Accepts]: Start accepts. Automaton has 1732 states and 2758 transitions. Word has length 57 [2024-11-08 16:54:22,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:54:22,372 INFO L471 AbstractCegarLoop]: Abstraction has 1732 states and 2758 transitions. [2024-11-08 16:54:22,372 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) [2024-11-08 16:54:22,372 INFO L276 IsEmpty]: Start isEmpty. Operand 1732 states and 2758 transitions. [2024-11-08 16:54:22,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-08 16:54:22,377 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:54:22,377 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] [2024-11-08 16:54:22,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-08 16:54:22,377 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:54:22,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:54:22,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1226511174, now seen corresponding path program 1 times [2024-11-08 16:54:22,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:54:22,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206236075] [2024-11-08 16:54:22,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:54:22,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:54:22,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:54:22,465 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:54:22,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:54:22,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206236075] [2024-11-08 16:54:22,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206236075] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:54:22,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:54:22,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:54:22,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521287383] [2024-11-08 16:54:22,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:54:22,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:54:22,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:54:22,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:54:22,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:54:22,467 INFO L87 Difference]: Start difference. First operand 1732 states and 2758 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) [2024-11-08 16:54:22,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:54:22,489 INFO L93 Difference]: Finished difference Result 2204 states and 3399 transitions. [2024-11-08 16:54:22,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:54:22,490 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 [2024-11-08 16:54:22,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:54:22,497 INFO L225 Difference]: With dead ends: 2204 [2024-11-08 16:54:22,497 INFO L226 Difference]: Without dead ends: 1266 [2024-11-08 16:54:22,498 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 [2024-11-08 16:54:22,502 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 [2024-11-08 16:54:22,502 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] [2024-11-08 16:54:22,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1266 states. [2024-11-08 16:54:22,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1266 to 1264. [2024-11-08 16:54:22,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1264 states, 1262 states have (on average 1.6719492868462758) internal successors, (2110), 1263 states have internal predecessors, (2110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:54:22,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1264 states to 1264 states and 2110 transitions. [2024-11-08 16:54:22,527 INFO L78 Accepts]: Start accepts. Automaton has 1264 states and 2110 transitions. Word has length 59 [2024-11-08 16:54:22,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:54:22,528 INFO L471 AbstractCegarLoop]: Abstraction has 1264 states and 2110 transitions. [2024-11-08 16:54:22,528 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) [2024-11-08 16:54:22,528 INFO L276 IsEmpty]: Start isEmpty. Operand 1264 states and 2110 transitions. [2024-11-08 16:54:22,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-08 16:54:22,528 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:54:22,529 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] [2024-11-08 16:54:22,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-08 16:54:22,530 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:54:22,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:54:22,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1826022888, now seen corresponding path program 1 times [2024-11-08 16:54:22,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:54:22,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873721735] [2024-11-08 16:54:22,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:54:22,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:54:22,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:54:23,543 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:54:23,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:54:23,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873721735] [2024-11-08 16:54:23,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873721735] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:54:23,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009627599] [2024-11-08 16:54:23,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:54:23,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:54:23,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 16:54:23,547 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) [2024-11-08 16:54:23,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 16:54:23,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:54:23,639 INFO L255 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-08 16:54:23,643 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:54:23,885 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 16:54:23,885 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:54:24,017 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 16:54:24,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009627599] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:54:24,018 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:54:24,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 4] total 19 [2024-11-08 16:54:24,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66978473] [2024-11-08 16:54:24,018 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:54:24,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-08 16:54:24,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:54:24,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-08 16:54:24,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2024-11-08 16:54:24,020 INFO L87 Difference]: Start difference. First operand 1264 states and 2110 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) [2024-11-08 16:54:25,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:54:25,539 INFO L93 Difference]: Finished difference Result 3665 states and 5284 transitions. [2024-11-08 16:54:25,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-08 16:54:25,539 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 [2024-11-08 16:54:25,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:54:25,545 INFO L225 Difference]: With dead ends: 3665 [2024-11-08 16:54:25,545 INFO L226 Difference]: Without dead ends: 3195 [2024-11-08 16:54:25,547 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 788 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=545, Invalid=2535, Unknown=0, NotChecked=0, Total=3080 [2024-11-08 16:54:25,548 INFO L432 NwaCegarLoop]: 1499 mSDtfsCounter, 14347 mSDsluCounter, 7682 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14347 SdHoareTripleChecker+Valid, 9181 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 16:54:25,548 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14347 Valid, 9181 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 682 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 16:54:25,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3195 states. [2024-11-08 16:54:25,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3195 to 3161. [2024-11-08 16:54:25,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3161 states, 3159 states have (on average 1.4102564102564104) internal successors, (4455), 3160 states have internal predecessors, (4455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:54:25,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3161 states to 3161 states and 4455 transitions. [2024-11-08 16:54:25,598 INFO L78 Accepts]: Start accepts. Automaton has 3161 states and 4455 transitions. Word has length 61 [2024-11-08 16:54:25,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:54:25,598 INFO L471 AbstractCegarLoop]: Abstraction has 3161 states and 4455 transitions. [2024-11-08 16:54:25,598 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) [2024-11-08 16:54:25,598 INFO L276 IsEmpty]: Start isEmpty. Operand 3161 states and 4455 transitions. [2024-11-08 16:54:25,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-08 16:54:25,599 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:54:25,599 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] [2024-11-08 16:54:25,615 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 16:54:25,803 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,SelfDestructingSolverStorable15 [2024-11-08 16:54:25,804 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:54:25,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:54:25,805 INFO L85 PathProgramCache]: Analyzing trace with hash 459765187, now seen corresponding path program 1 times [2024-11-08 16:54:25,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:54:25,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758742688] [2024-11-08 16:54:25,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:54:25,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:54:25,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:54:27,176 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:54:27,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:54:27,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758742688] [2024-11-08 16:54:27,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758742688] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:54:27,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936346535] [2024-11-08 16:54:27,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:54:27,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:54:27,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 16:54:27,178 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) [2024-11-08 16:54:27,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 16:54:27,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:54:27,362 INFO L255 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-08 16:54:27,364 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:54:27,743 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:54:27,744 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:54:28,377 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:54:28,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936346535] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:54:28,378 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:54:28,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 25 [2024-11-08 16:54:28,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094813966] [2024-11-08 16:54:28,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:54:28,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-08 16:54:28,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:54:28,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-08 16:54:28,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650 [2024-11-08 16:54:28,379 INFO L87 Difference]: Start difference. First operand 3161 states and 4455 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) [2024-11-08 16:54:28,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:54:28,941 INFO L93 Difference]: Finished difference Result 7268 states and 9645 transitions. [2024-11-08 16:54:28,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 16:54:28,941 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 [2024-11-08 16:54:28,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:54:28,953 INFO L225 Difference]: With dead ends: 7268 [2024-11-08 16:54:28,954 INFO L226 Difference]: Without dead ends: 5309 [2024-11-08 16:54:28,957 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=287, Invalid=1045, Unknown=0, NotChecked=0, Total=1332 [2024-11-08 16:54:28,957 INFO L432 NwaCegarLoop]: 1495 mSDtfsCounter, 15169 mSDsluCounter, 3263 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15169 SdHoareTripleChecker+Valid, 4758 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 16:54:28,958 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15169 Valid, 4758 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 16:54:28,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5309 states. [2024-11-08 16:54:29,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5309 to 5243. [2024-11-08 16:54:29,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5243 states, 5241 states have (on average 1.3325701202060676) internal successors, (6984), 5242 states have internal predecessors, (6984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:54:29,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5243 states to 5243 states and 6984 transitions. [2024-11-08 16:54:29,112 INFO L78 Accepts]: Start accepts. Automaton has 5243 states and 6984 transitions. Word has length 62 [2024-11-08 16:54:29,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:54:29,113 INFO L471 AbstractCegarLoop]: Abstraction has 5243 states and 6984 transitions. [2024-11-08 16:54:29,113 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) [2024-11-08 16:54:29,113 INFO L276 IsEmpty]: Start isEmpty. Operand 5243 states and 6984 transitions. [2024-11-08 16:54:29,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-08 16:54:29,114 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:54:29,114 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] [2024-11-08 16:54:29,129 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 16:54:29,317 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,SelfDestructingSolverStorable16 [2024-11-08 16:54:29,318 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:54:29,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:54:29,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1147902773, now seen corresponding path program 1 times [2024-11-08 16:54:29,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:54:29,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944971181] [2024-11-08 16:54:29,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:54:29,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:54:29,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:54:29,716 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:54:29,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:54:29,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944971181] [2024-11-08 16:54:29,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944971181] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:54:29,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355083409] [2024-11-08 16:54:29,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:54:29,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:54:29,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 16:54:29,719 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) [2024-11-08 16:54:29,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 16:54:29,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:54:29,813 INFO L255 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-08 16:54:29,815 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:54:30,531 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:54:30,532 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:54:31,215 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:54:31,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355083409] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:54:31,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:54:31,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 32 [2024-11-08 16:54:31,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426743713] [2024-11-08 16:54:31,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:54:31,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-08 16:54:31,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:54:31,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-08 16:54:31,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=887, Unknown=0, NotChecked=0, Total=992 [2024-11-08 16:54:31,217 INFO L87 Difference]: Start difference. First operand 5243 states and 6984 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) [2024-11-08 16:54:33,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:54:33,909 INFO L93 Difference]: Finished difference Result 13264 states and 17044 transitions. [2024-11-08 16:54:33,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-08 16:54:33,910 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 [2024-11-08 16:54:33,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:54:33,924 INFO L225 Difference]: With dead ends: 13264 [2024-11-08 16:54:33,925 INFO L226 Difference]: Without dead ends: 9304 [2024-11-08 16:54:33,933 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1630 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1214, Invalid=5592, Unknown=0, NotChecked=0, Total=6806 [2024-11-08 16:54:33,933 INFO L432 NwaCegarLoop]: 1508 mSDtfsCounter, 13920 mSDsluCounter, 14047 mSDsCounter, 0 mSdLazyCounter, 930 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13920 SdHoareTripleChecker+Valid, 15555 SdHoareTripleChecker+Invalid, 974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 16:54:33,934 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13920 Valid, 15555 Invalid, 974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 930 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 16:54:33,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9304 states. [2024-11-08 16:54:34,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9304 to 5902. [2024-11-08 16:54:34,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5902 states, 5900 states have (on average 1.3220338983050848) internal successors, (7800), 5901 states have internal predecessors, (7800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:54:34,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5902 states to 5902 states and 7800 transitions. [2024-11-08 16:54:34,081 INFO L78 Accepts]: Start accepts. Automaton has 5902 states and 7800 transitions. Word has length 62 [2024-11-08 16:54:34,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:54:34,081 INFO L471 AbstractCegarLoop]: Abstraction has 5902 states and 7800 transitions. [2024-11-08 16:54:34,081 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) [2024-11-08 16:54:34,082 INFO L276 IsEmpty]: Start isEmpty. Operand 5902 states and 7800 transitions. [2024-11-08 16:54:34,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-08 16:54:34,083 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:54:34,083 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] [2024-11-08 16:54:34,095 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 16:54:34,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-08 16:54:34,287 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:54:34,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:54:34,287 INFO L85 PathProgramCache]: Analyzing trace with hash 807603108, now seen corresponding path program 1 times [2024-11-08 16:54:34,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:54:34,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389757658] [2024-11-08 16:54:34,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:54:34,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:54:34,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:54:34,598 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:54:34,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:54:34,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389757658] [2024-11-08 16:54:34,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389757658] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:54:34,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133707602] [2024-11-08 16:54:34,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:54:34,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:54:34,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 16:54:34,603 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) [2024-11-08 16:54:34,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 16:54:34,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:54:34,687 INFO L255 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-08 16:54:34,689 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:54:35,641 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:54:35,642 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:54:36,354 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:54:36,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133707602] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:54:36,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:54:36,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 26 [2024-11-08 16:54:36,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780227955] [2024-11-08 16:54:36,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:54:36,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-08 16:54:36,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:54:36,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-08 16:54:36,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=590, Unknown=0, NotChecked=0, Total=702 [2024-11-08 16:54:36,356 INFO L87 Difference]: Start difference. First operand 5902 states and 7800 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) [2024-11-08 16:54:37,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:54:37,724 INFO L93 Difference]: Finished difference Result 12552 states and 16103 transitions. [2024-11-08 16:54:37,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-08 16:54:37,725 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 [2024-11-08 16:54:37,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:54:37,737 INFO L225 Difference]: With dead ends: 12552 [2024-11-08 16:54:37,737 INFO L226 Difference]: Without dead ends: 8238 [2024-11-08 16:54:37,742 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 549 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=637, Invalid=2015, Unknown=0, NotChecked=0, Total=2652 [2024-11-08 16:54:37,743 INFO L432 NwaCegarLoop]: 1514 mSDtfsCounter, 21567 mSDsluCounter, 7866 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21567 SdHoareTripleChecker+Valid, 9380 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 16:54:37,743 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21567 Valid, 9380 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 16:54:37,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8238 states. [2024-11-08 16:54:37,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8238 to 7814. [2024-11-08 16:54:37,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7814 states, 7812 states have (on average 1.290962621607783) internal successors, (10085), 7813 states have internal predecessors, (10085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:54:37,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7814 states to 7814 states and 10085 transitions. [2024-11-08 16:54:37,934 INFO L78 Accepts]: Start accepts. Automaton has 7814 states and 10085 transitions. Word has length 63 [2024-11-08 16:54:37,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:54:37,934 INFO L471 AbstractCegarLoop]: Abstraction has 7814 states and 10085 transitions. [2024-11-08 16:54:37,934 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) [2024-11-08 16:54:37,935 INFO L276 IsEmpty]: Start isEmpty. Operand 7814 states and 10085 transitions. [2024-11-08 16:54:37,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-08 16:54:37,936 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:54:37,936 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] [2024-11-08 16:54:37,953 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 16:54:38,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:54:38,138 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:54:38,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:54:38,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1786741782, now seen corresponding path program 1 times [2024-11-08 16:54:38,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:54:38,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241755336] [2024-11-08 16:54:38,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:54:38,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:54:38,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:54:39,336 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:54:39,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:54:39,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241755336] [2024-11-08 16:54:39,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241755336] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:54:39,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349327154] [2024-11-08 16:54:39,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:54:39,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:54:39,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 16:54:39,338 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) [2024-11-08 16:54:39,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 16:54:39,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:54:39,452 INFO L255 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-08 16:54:39,454 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:54:42,065 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:54:42,065 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:54:43,596 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:54:43,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349327154] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:54:43,597 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:54:43,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18, 15] total 51 [2024-11-08 16:54:43,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043701320] [2024-11-08 16:54:43,597 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:54:43,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-08 16:54:43,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:54:43,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-08 16:54:43,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=2308, Unknown=0, NotChecked=0, Total=2550 [2024-11-08 16:54:43,599 INFO L87 Difference]: Start difference. First operand 7814 states and 10085 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) [2024-11-08 16:55:01,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:55:01,224 INFO L93 Difference]: Finished difference Result 14540 states and 18342 transitions. [2024-11-08 16:55:01,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-11-08 16:55:01,225 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 [2024-11-08 16:55:01,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:55:01,239 INFO L225 Difference]: With dead ends: 14540 [2024-11-08 16:55:01,240 INFO L226 Difference]: Without dead ends: 11701 [2024-11-08 16:55:01,247 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5729 ImplicationChecksByTransitivity, 17.0s TimeCoverageRelationStatistics Valid=4031, Invalid=15991, Unknown=0, NotChecked=0, Total=20022 [2024-11-08 16:55:01,247 INFO L432 NwaCegarLoop]: 1536 mSDtfsCounter, 31060 mSDsluCounter, 23922 mSDsCounter, 0 mSdLazyCounter, 2480 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31060 SdHoareTripleChecker+Valid, 25458 SdHoareTripleChecker+Invalid, 2601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 2480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-08 16:55:01,248 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31060 Valid, 25458 Invalid, 2601 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [121 Valid, 2480 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-08 16:55:01,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11701 states. [2024-11-08 16:55:01,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11701 to 9885. [2024-11-08 16:55:01,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9885 states, 9883 states have (on average 1.2800768997268035) internal successors, (12651), 9884 states have internal predecessors, (12651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:01,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9885 states to 9885 states and 12651 transitions. [2024-11-08 16:55:01,564 INFO L78 Accepts]: Start accepts. Automaton has 9885 states and 12651 transitions. Word has length 63 [2024-11-08 16:55:01,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:55:01,564 INFO L471 AbstractCegarLoop]: Abstraction has 9885 states and 12651 transitions. [2024-11-08 16:55:01,564 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) [2024-11-08 16:55:01,564 INFO L276 IsEmpty]: Start isEmpty. Operand 9885 states and 12651 transitions. [2024-11-08 16:55:01,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-08 16:55:01,565 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:55:01,565 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:55:01,584 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 16:55:01,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:55:01,770 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:55:01,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:55:01,770 INFO L85 PathProgramCache]: Analyzing trace with hash 606047555, now seen corresponding path program 1 times [2024-11-08 16:55:01,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:55:01,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661477799] [2024-11-08 16:55:01,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:01,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:55:01,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:01,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:01,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:55:01,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661477799] [2024-11-08 16:55:01,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661477799] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:55:01,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:55:01,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 16:55:01,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788670030] [2024-11-08 16:55:01,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:55:01,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:55:01,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:55:01,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:55:01,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:55:01,812 INFO L87 Difference]: Start difference. First operand 9885 states and 12651 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:04,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:55:04,849 INFO L93 Difference]: Finished difference Result 11389 states and 15524 transitions. [2024-11-08 16:55:04,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:55:04,849 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-11-08 16:55:04,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:55:04,859 INFO L225 Difference]: With dead ends: 11389 [2024-11-08 16:55:04,859 INFO L226 Difference]: Without dead ends: 10636 [2024-11-08 16:55:04,861 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 [2024-11-08 16:55:04,863 INFO L432 NwaCegarLoop]: 540 mSDtfsCounter, 810 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2261 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 810 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-08 16:55:04,863 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [810 Valid, 547 Invalid, 2913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2261 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-08 16:55:04,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10636 states. [2024-11-08 16:55:05,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10636 to 10636. [2024-11-08 16:55:05,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10636 states, 10634 states have (on average 1.2817378220801203) internal successors, (13630), 10635 states have internal predecessors, (13630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:05,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10636 states to 10636 states and 13630 transitions. [2024-11-08 16:55:05,182 INFO L78 Accepts]: Start accepts. Automaton has 10636 states and 13630 transitions. Word has length 63 [2024-11-08 16:55:05,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:55:05,182 INFO L471 AbstractCegarLoop]: Abstraction has 10636 states and 13630 transitions. [2024-11-08 16:55:05,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:05,182 INFO L276 IsEmpty]: Start isEmpty. Operand 10636 states and 13630 transitions. [2024-11-08 16:55:05,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-08 16:55:05,183 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:55:05,183 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] [2024-11-08 16:55:05,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-08 16:55:05,183 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:55:05,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:55:05,183 INFO L85 PathProgramCache]: Analyzing trace with hash 532152701, now seen corresponding path program 1 times [2024-11-08 16:55:05,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:55:05,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33265045] [2024-11-08 16:55:05,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:05,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:55:05,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:05,936 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:05,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:55:05,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33265045] [2024-11-08 16:55:05,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33265045] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:55:05,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627453708] [2024-11-08 16:55:05,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:05,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:55:05,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 16:55:05,938 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) [2024-11-08 16:55:05,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 16:55:06,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:06,024 INFO L255 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-08 16:55:06,027 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:55:06,916 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:06,916 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:55:07,408 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:07,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627453708] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:55:07,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:55:07,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 12] total 34 [2024-11-08 16:55:07,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246601499] [2024-11-08 16:55:07,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:55:07,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-08 16:55:07,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:55:07,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-08 16:55:07,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=985, Unknown=0, NotChecked=0, Total=1122 [2024-11-08 16:55:07,410 INFO L87 Difference]: Start difference. First operand 10636 states and 13630 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) [2024-11-08 16:55:09,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:55:09,554 INFO L93 Difference]: Finished difference Result 14134 states and 17907 transitions. [2024-11-08 16:55:09,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-08 16:55:09,555 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 [2024-11-08 16:55:09,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:55:09,565 INFO L225 Difference]: With dead ends: 14134 [2024-11-08 16:55:09,566 INFO L226 Difference]: Without dead ends: 10323 [2024-11-08 16:55:09,571 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 693 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=822, Invalid=2960, Unknown=0, NotChecked=0, Total=3782 [2024-11-08 16:55:09,572 INFO L432 NwaCegarLoop]: 1517 mSDtfsCounter, 18874 mSDsluCounter, 15365 mSDsCounter, 0 mSdLazyCounter, 897 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18874 SdHoareTripleChecker+Valid, 16882 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 16:55:09,572 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18874 Valid, 16882 Invalid, 930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 897 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 16:55:09,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10323 states. [2024-11-08 16:55:09,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10323 to 8705. [2024-11-08 16:55:09,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8705 states, 8703 states have (on average 1.2885211995863495) internal successors, (11214), 8704 states have internal predecessors, (11214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:09,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8705 states to 8705 states and 11214 transitions. [2024-11-08 16:55:09,846 INFO L78 Accepts]: Start accepts. Automaton has 8705 states and 11214 transitions. Word has length 64 [2024-11-08 16:55:09,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:55:09,846 INFO L471 AbstractCegarLoop]: Abstraction has 8705 states and 11214 transitions. [2024-11-08 16:55:09,847 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) [2024-11-08 16:55:09,847 INFO L276 IsEmpty]: Start isEmpty. Operand 8705 states and 11214 transitions. [2024-11-08 16:55:09,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-08 16:55:09,847 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:55:09,847 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] [2024-11-08 16:55:09,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-08 16:55:10,050 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 [2024-11-08 16:55:10,051 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:55:10,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:55:10,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1624666796, now seen corresponding path program 1 times [2024-11-08 16:55:10,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:55:10,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621796409] [2024-11-08 16:55:10,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:10,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:55:10,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:11,581 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:11,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:55:11,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621796409] [2024-11-08 16:55:11,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621796409] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:55:11,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644586887] [2024-11-08 16:55:11,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:11,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:55:11,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 16:55:11,583 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) [2024-11-08 16:55:11,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 16:55:11,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:11,670 INFO L255 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-08 16:55:11,673 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:55:12,256 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:12,256 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:55:13,293 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:13,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644586887] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:55:13,293 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:55:13,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 12, 12] total 42 [2024-11-08 16:55:13,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344404310] [2024-11-08 16:55:13,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:55:13,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-08 16:55:13,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:55:13,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-08 16:55:13,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1593, Unknown=0, NotChecked=0, Total=1722 [2024-11-08 16:55:13,296 INFO L87 Difference]: Start difference. First operand 8705 states and 11214 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) [2024-11-08 16:55:21,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:55:21,719 INFO L93 Difference]: Finished difference Result 22615 states and 28264 transitions. [2024-11-08 16:55:21,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2024-11-08 16:55:21,720 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 65 [2024-11-08 16:55:21,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:55:21,740 INFO L225 Difference]: With dead ends: 22615 [2024-11-08 16:55:21,740 INFO L226 Difference]: Without dead ends: 18184 [2024-11-08 16:55:21,750 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2605 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=2435, Invalid=9121, Unknown=0, NotChecked=0, Total=11556 [2024-11-08 16:55:21,751 INFO L432 NwaCegarLoop]: 1583 mSDtfsCounter, 15627 mSDsluCounter, 29091 mSDsCounter, 0 mSdLazyCounter, 2819 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15627 SdHoareTripleChecker+Valid, 30674 SdHoareTripleChecker+Invalid, 2900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 2819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-08 16:55:21,751 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15627 Valid, 30674 Invalid, 2900 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [81 Valid, 2819 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-08 16:55:21,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18184 states. [2024-11-08 16:55:22,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18184 to 5862. [2024-11-08 16:55:22,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5862 states, 5860 states have (on average 1.3247440273037543) internal successors, (7763), 5861 states have internal predecessors, (7763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:22,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5862 states to 5862 states and 7763 transitions. [2024-11-08 16:55:22,101 INFO L78 Accepts]: Start accepts. Automaton has 5862 states and 7763 transitions. Word has length 65 [2024-11-08 16:55:22,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:55:22,101 INFO L471 AbstractCegarLoop]: Abstraction has 5862 states and 7763 transitions. [2024-11-08 16:55:22,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2024-11-08 16:55:22,101 INFO L276 IsEmpty]: Start isEmpty. Operand 5862 states and 7763 transitions. [2024-11-08 16:55:22,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-08 16:55:22,102 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:55:22,102 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:55:22,116 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-08 16:55:22,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:55:22,303 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:55:22,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:55:22,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1065912349, now seen corresponding path program 1 times [2024-11-08 16:55:22,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:55:22,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984763161] [2024-11-08 16:55:22,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:22,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:55:22,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:23,017 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 31 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:23,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:55:23,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984763161] [2024-11-08 16:55:23,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984763161] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:55:23,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917816706] [2024-11-08 16:55:23,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:23,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:55:23,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 16:55:23,023 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:55:23,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 16:55:23,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:23,131 INFO L255 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-08 16:55:23,133 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:55:23,611 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 33 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:23,612 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:55:24,770 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 31 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:24,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917816706] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:55:24,770 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:55:24,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 26 [2024-11-08 16:55:24,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929581098] [2024-11-08 16:55:24,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:55:24,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-08 16:55:24,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:55:24,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-08 16:55:24,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=595, Unknown=0, NotChecked=0, Total=702 [2024-11-08 16:55:24,772 INFO L87 Difference]: Start difference. First operand 5862 states and 7763 transitions. Second operand has 27 states, 27 states have (on average 8.333333333333334) internal successors, (225), 26 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:25,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:55:25,761 INFO L93 Difference]: Finished difference Result 15432 states and 19691 transitions. [2024-11-08 16:55:25,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-08 16:55:25,762 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 8.333333333333334) internal successors, (225), 26 states have internal predecessors, (225), 0 states have call successors, (0), 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 103 [2024-11-08 16:55:25,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:55:25,772 INFO L225 Difference]: With dead ends: 15432 [2024-11-08 16:55:25,772 INFO L226 Difference]: Without dead ends: 11433 [2024-11-08 16:55:25,777 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 191 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=381, Invalid=1341, Unknown=0, NotChecked=0, Total=1722 [2024-11-08 16:55:25,778 INFO L432 NwaCegarLoop]: 1516 mSDtfsCounter, 14891 mSDsluCounter, 12086 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14891 SdHoareTripleChecker+Valid, 13602 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 16:55:25,778 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14891 Valid, 13602 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 16:55:25,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11433 states. [2024-11-08 16:55:26,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11433 to 10613. [2024-11-08 16:55:26,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10613 states, 10611 states have (on average 1.2713222127980397) internal successors, (13490), 10612 states have internal predecessors, (13490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:26,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10613 states to 10613 states and 13490 transitions. [2024-11-08 16:55:26,223 INFO L78 Accepts]: Start accepts. Automaton has 10613 states and 13490 transitions. Word has length 103 [2024-11-08 16:55:26,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:55:26,223 INFO L471 AbstractCegarLoop]: Abstraction has 10613 states and 13490 transitions. [2024-11-08 16:55:26,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 8.333333333333334) internal successors, (225), 26 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:26,223 INFO L276 IsEmpty]: Start isEmpty. Operand 10613 states and 13490 transitions. [2024-11-08 16:55:26,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-08 16:55:26,225 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:55:26,225 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:55:26,239 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-08 16:55:26,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-08 16:55:26,430 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:55:26,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:55:26,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1754049935, now seen corresponding path program 1 times [2024-11-08 16:55:26,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:55:26,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629313432] [2024-11-08 16:55:26,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:26,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:55:26,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:27,019 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 34 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:27,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:55:27,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629313432] [2024-11-08 16:55:27,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629313432] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:55:27,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030067727] [2024-11-08 16:55:27,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:27,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:55:27,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 16:55:27,021 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:55:27,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 16:55:27,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:27,121 INFO L255 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-08 16:55:27,122 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:55:27,763 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 38 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:27,763 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:55:28,719 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 34 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:28,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030067727] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:55:28,719 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:55:28,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 26 [2024-11-08 16:55:28,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078414526] [2024-11-08 16:55:28,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:55:28,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-08 16:55:28,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:55:28,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-08 16:55:28,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=602, Unknown=0, NotChecked=0, Total=702 [2024-11-08 16:55:28,721 INFO L87 Difference]: Start difference. First operand 10613 states and 13490 transitions. Second operand has 27 states, 27 states have (on average 8.037037037037036) internal successors, (217), 26 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:29,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:55:29,730 INFO L93 Difference]: Finished difference Result 15323 states and 19254 transitions. [2024-11-08 16:55:29,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-08 16:55:29,731 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 8.037037037037036) internal successors, (217), 26 states have internal predecessors, (217), 0 states have call successors, (0), 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 103 [2024-11-08 16:55:29,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:55:29,742 INFO L225 Difference]: With dead ends: 15323 [2024-11-08 16:55:29,742 INFO L226 Difference]: Without dead ends: 9611 [2024-11-08 16:55:29,748 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=347, Invalid=1293, Unknown=0, NotChecked=0, Total=1640 [2024-11-08 16:55:29,749 INFO L432 NwaCegarLoop]: 1515 mSDtfsCounter, 14806 mSDsluCounter, 10655 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14806 SdHoareTripleChecker+Valid, 12170 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 16:55:29,749 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14806 Valid, 12170 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 16:55:29,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9611 states. [2024-11-08 16:55:30,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9611 to 9519. [2024-11-08 16:55:30,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9519 states, 9517 states have (on average 1.2688872543868865) internal successors, (12076), 9518 states have internal predecessors, (12076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:30,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9519 states to 9519 states and 12076 transitions. [2024-11-08 16:55:30,260 INFO L78 Accepts]: Start accepts. Automaton has 9519 states and 12076 transitions. Word has length 103 [2024-11-08 16:55:30,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:55:30,261 INFO L471 AbstractCegarLoop]: Abstraction has 9519 states and 12076 transitions. [2024-11-08 16:55:30,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 8.037037037037036) internal successors, (217), 26 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:30,261 INFO L276 IsEmpty]: Start isEmpty. Operand 9519 states and 12076 transitions. [2024-11-08 16:55:30,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-08 16:55:30,263 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:55:30,263 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:55:30,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-08 16:55:30,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-08 16:55:30,465 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:55:30,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:55:30,465 INFO L85 PathProgramCache]: Analyzing trace with hash 856710688, now seen corresponding path program 1 times [2024-11-08 16:55:30,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:55:30,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504074327] [2024-11-08 16:55:30,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:30,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:55:30,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:31,320 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 57 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-08 16:55:31,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:55:31,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504074327] [2024-11-08 16:55:31,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504074327] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:55:31,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210304755] [2024-11-08 16:55:31,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:31,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:55:31,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 16:55:31,322 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:55:31,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 16:55:31,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:31,430 INFO L255 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-08 16:55:31,432 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:55:32,687 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 25 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:32,688 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:55:35,581 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 25 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:35,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [210304755] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:55:35,582 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:55:35,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 52 [2024-11-08 16:55:35,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391959200] [2024-11-08 16:55:35,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:55:35,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-08 16:55:35,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:55:35,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-08 16:55:35,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=2423, Unknown=0, NotChecked=0, Total=2652 [2024-11-08 16:55:35,583 INFO L87 Difference]: Start difference. First operand 9519 states and 12076 transitions. Second operand has 52 states, 52 states have (on average 5.173076923076923) internal successors, (269), 52 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)