./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.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 dd1724e619d2e8fc18a4dc8aa6c726656a51fc7e14f993d511c4c773ed4748f3 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 20:03:14,818 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 20:03:14,866 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 20:03:14,869 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 20:03:14,870 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 20:03:14,887 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 20:03:14,887 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 20:03:14,887 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 20:03:14,888 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 20:03:14,890 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 20:03:14,891 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 20:03:14,891 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 20:03:14,891 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 20:03:14,891 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 20:03:14,892 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 20:03:14,892 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 20:03:14,892 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 20:03:14,892 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 20:03:14,892 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 20:03:14,892 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 20:03:14,892 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 20:03:14,894 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 20:03:14,894 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 20:03:14,894 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 20:03:14,894 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 20:03:14,895 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 20:03:14,895 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 20:03:14,895 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 20:03:14,895 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 20:03:14,895 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 20:03:14,895 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 20:03:14,895 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 20:03:14,896 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 20:03:14,896 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 20:03:14,896 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 20:03:14,896 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 20:03:14,896 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 20:03:14,896 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 20:03:14,896 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 20:03:14,896 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 20:03:14,897 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 20:03:14,898 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 20:03:14,898 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dd1724e619d2e8fc18a4dc8aa6c726656a51fc7e14f993d511c4c773ed4748f3 [2024-10-12 20:03:15,122 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 20:03:15,143 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 20:03:15,145 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 20:03:15,146 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 20:03:15,146 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 20:03:15,147 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c [2024-10-12 20:03:16,290 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 20:03:16,513 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 20:03:16,514 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c [2024-10-12 20:03:16,525 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/622d3df7d/959ff657f76d43319eb0ef61225d5963/FLAGad9f3ca99 [2024-10-12 20:03:16,535 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/622d3df7d/959ff657f76d43319eb0ef61225d5963 [2024-10-12 20:03:16,537 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 20:03:16,538 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 20:03:16,539 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 20:03:16,539 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 20:03:16,543 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 20:03:16,543 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:03:16" (1/1) ... [2024-10-12 20:03:16,544 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c778858 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:03:16, skipping insertion in model container [2024-10-12 20:03:16,544 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:03:16" (1/1) ... [2024-10-12 20:03:16,569 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 20:03:16,775 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c[17005,17018] [2024-10-12 20:03:16,779 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 20:03:16,789 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 20:03:16,853 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c[17005,17018] [2024-10-12 20:03:16,853 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 20:03:16,872 INFO L204 MainTranslator]: Completed translation [2024-10-12 20:03:16,873 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:03:16 WrapperNode [2024-10-12 20:03:16,873 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 20:03:16,874 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 20:03:16,874 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 20:03:16,874 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 20:03:16,879 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:03:16" (1/1) ... [2024-10-12 20:03:16,887 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:03:16" (1/1) ... [2024-10-12 20:03:16,914 INFO L138 Inliner]: procedures = 26, calls = 17, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 454 [2024-10-12 20:03:16,914 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 20:03:16,915 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 20:03:16,915 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 20:03:16,915 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 20:03:16,924 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:03:16" (1/1) ... [2024-10-12 20:03:16,924 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:03:16" (1/1) ... [2024-10-12 20:03:16,931 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:03:16" (1/1) ... [2024-10-12 20:03:16,949 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-12 20:03:16,949 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:03:16" (1/1) ... [2024-10-12 20:03:16,949 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:03:16" (1/1) ... [2024-10-12 20:03:16,961 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:03:16" (1/1) ... [2024-10-12 20:03:16,972 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:03:16" (1/1) ... [2024-10-12 20:03:16,976 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:03:16" (1/1) ... [2024-10-12 20:03:16,978 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:03:16" (1/1) ... [2024-10-12 20:03:16,980 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 20:03:16,981 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 20:03:16,981 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 20:03:16,981 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 20:03:16,982 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:03:16" (1/1) ... [2024-10-12 20:03:16,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 20:03:16,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 20:03:17,012 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-12 20:03:17,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-12 20:03:17,051 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 20:03:17,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 20:03:17,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 20:03:17,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 20:03:17,137 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 20:03:17,139 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 20:03:17,553 INFO L? ?]: Removed 51 outVars from TransFormulas that were not future-live. [2024-10-12 20:03:17,554 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 20:03:17,595 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 20:03:17,595 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-12 20:03:17,597 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:03:17 BoogieIcfgContainer [2024-10-12 20:03:17,597 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 20:03:17,598 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 20:03:17,599 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 20:03:17,601 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 20:03:17,601 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 08:03:16" (1/3) ... [2024-10-12 20:03:17,602 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@166e8f98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:03:17, skipping insertion in model container [2024-10-12 20:03:17,602 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:03:16" (2/3) ... [2024-10-12 20:03:17,603 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@166e8f98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:03:17, skipping insertion in model container [2024-10-12 20:03:17,604 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:03:17" (3/3) ... [2024-10-12 20:03:17,605 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c [2024-10-12 20:03:17,617 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 20:03:17,617 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-12 20:03:17,665 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 20:03:17,670 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;@5298bfad, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 20:03:17,671 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-12 20:03:17,675 INFO L276 IsEmpty]: Start isEmpty. Operand has 118 states, 116 states have (on average 1.793103448275862) internal successors, (208), 117 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:03:17,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-12 20:03:17,682 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:03:17,682 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] [2024-10-12 20:03:17,682 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:03:17,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:03:17,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1104781184, now seen corresponding path program 1 times [2024-10-12 20:03:17,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:03:17,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072718307] [2024-10-12 20:03:17,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:03:17,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:03:17,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:03:18,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:03:18,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:03:18,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072718307] [2024-10-12 20:03:18,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072718307] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:03:18,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:03:18,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 20:03:18,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481844662] [2024-10-12 20:03:18,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:03:18,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 20:03:18,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:03:18,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 20:03:18,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 20:03:18,040 INFO L87 Difference]: Start difference. First operand has 118 states, 116 states have (on average 1.793103448275862) internal successors, (208), 117 states have internal predecessors, (208), 0 states have call successors, (0), 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 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:03:18,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:03:18,142 INFO L93 Difference]: Finished difference Result 192 states and 332 transitions. [2024-10-12 20:03:18,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 20:03:18,144 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2024-10-12 20:03:18,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:03:18,152 INFO L225 Difference]: With dead ends: 192 [2024-10-12 20:03:18,153 INFO L226 Difference]: Without dead ends: 116 [2024-10-12 20:03:18,156 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 20:03:18,159 INFO L432 NwaCegarLoop]: 200 mSDtfsCounter, 0 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 20:03:18,160 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 556 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 20:03:18,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-10-12 20:03:18,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2024-10-12 20:03:18,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.4086956521739131) internal successors, (162), 115 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:03:18,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 162 transitions. [2024-10-12 20:03:18,188 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 162 transitions. Word has length 34 [2024-10-12 20:03:18,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:03:18,190 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 162 transitions. [2024-10-12 20:03:18,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:03:18,191 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 162 transitions. [2024-10-12 20:03:18,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-10-12 20:03:18,192 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:03:18,193 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:03:18,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 20:03:18,193 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:03:18,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:03:18,194 INFO L85 PathProgramCache]: Analyzing trace with hash 793023434, now seen corresponding path program 1 times [2024-10-12 20:03:18,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:03:18,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344644592] [2024-10-12 20:03:18,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:03:18,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:03:18,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:03:18,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:03:18,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:03:18,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344644592] [2024-10-12 20:03:18,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344644592] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:03:18,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:03:18,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 20:03:18,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945903364] [2024-10-12 20:03:18,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:03:18,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 20:03:18,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:03:18,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 20:03:18,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:03:18,333 INFO L87 Difference]: Start difference. First operand 116 states and 162 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:03:18,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:03:18,369 INFO L93 Difference]: Finished difference Result 250 states and 382 transitions. [2024-10-12 20:03:18,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 20:03:18,369 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2024-10-12 20:03:18,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:03:18,370 INFO L225 Difference]: With dead ends: 250 [2024-10-12 20:03:18,371 INFO L226 Difference]: Without dead ends: 179 [2024-10-12 20:03:18,371 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:03:18,372 INFO L432 NwaCegarLoop]: 237 mSDtfsCounter, 101 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 20:03:18,374 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 354 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 20:03:18,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-10-12 20:03:18,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 177. [2024-10-12 20:03:18,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 1.4943181818181819) internal successors, (263), 176 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:03:18,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 263 transitions. [2024-10-12 20:03:18,393 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 263 transitions. Word has length 74 [2024-10-12 20:03:18,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:03:18,393 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 263 transitions. [2024-10-12 20:03:18,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:03:18,394 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 263 transitions. [2024-10-12 20:03:18,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-10-12 20:03:18,395 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:03:18,396 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:03:18,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 20:03:18,396 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:03:18,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:03:18,398 INFO L85 PathProgramCache]: Analyzing trace with hash 706247657, now seen corresponding path program 1 times [2024-10-12 20:03:18,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:03:18,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307868156] [2024-10-12 20:03:18,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:03:18,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:03:18,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:03:18,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:03:18,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:03:18,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307868156] [2024-10-12 20:03:18,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307868156] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:03:18,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:03:18,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 20:03:18,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095792973] [2024-10-12 20:03:18,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:03:18,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 20:03:18,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:03:18,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 20:03:18,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:03:18,507 INFO L87 Difference]: Start difference. First operand 177 states and 263 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:03:18,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:03:18,531 INFO L93 Difference]: Finished difference Result 425 states and 671 transitions. [2024-10-12 20:03:18,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 20:03:18,534 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2024-10-12 20:03:18,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:03:18,536 INFO L225 Difference]: With dead ends: 425 [2024-10-12 20:03:18,536 INFO L226 Difference]: Without dead ends: 293 [2024-10-12 20:03:18,537 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:03:18,540 INFO L432 NwaCegarLoop]: 196 mSDtfsCounter, 89 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 20:03:18,540 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 325 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 20:03:18,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2024-10-12 20:03:18,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 291. [2024-10-12 20:03:18,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 290 states have (on average 1.5517241379310345) internal successors, (450), 290 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:03:18,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 450 transitions. [2024-10-12 20:03:18,565 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 450 transitions. Word has length 74 [2024-10-12 20:03:18,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:03:18,565 INFO L471 AbstractCegarLoop]: Abstraction has 291 states and 450 transitions. [2024-10-12 20:03:18,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:03:18,565 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 450 transitions. [2024-10-12 20:03:18,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-10-12 20:03:18,566 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:03:18,566 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:03:18,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 20:03:18,566 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:03:18,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:03:18,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1617451656, now seen corresponding path program 1 times [2024-10-12 20:03:18,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:03:18,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137739260] [2024-10-12 20:03:18,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:03:18,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:03:18,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:03:18,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:03:18,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:03:18,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137739260] [2024-10-12 20:03:18,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137739260] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:03:18,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:03:18,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 20:03:18,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651684689] [2024-10-12 20:03:18,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:03:18,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 20:03:18,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:03:18,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 20:03:18,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:03:18,677 INFO L87 Difference]: Start difference. First operand 291 states and 450 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:03:18,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:03:18,696 INFO L93 Difference]: Finished difference Result 751 states and 1204 transitions. [2024-10-12 20:03:18,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 20:03:18,697 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2024-10-12 20:03:18,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:03:18,699 INFO L225 Difference]: With dead ends: 751 [2024-10-12 20:03:18,699 INFO L226 Difference]: Without dead ends: 505 [2024-10-12 20:03:18,700 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:03:18,704 INFO L432 NwaCegarLoop]: 189 mSDtfsCounter, 85 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 20:03:18,705 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 322 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 20:03:18,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2024-10-12 20:03:18,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 503. [2024-10-12 20:03:18,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 502 states have (on average 1.5816733067729083) internal successors, (794), 502 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:03:18,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 794 transitions. [2024-10-12 20:03:18,727 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 794 transitions. Word has length 74 [2024-10-12 20:03:18,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:03:18,727 INFO L471 AbstractCegarLoop]: Abstraction has 503 states and 794 transitions. [2024-10-12 20:03:18,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:03:18,728 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 794 transitions. [2024-10-12 20:03:18,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-10-12 20:03:18,729 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:03:18,729 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:03:18,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-12 20:03:18,732 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:03:18,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:03:18,732 INFO L85 PathProgramCache]: Analyzing trace with hash 2004246695, now seen corresponding path program 1 times [2024-10-12 20:03:18,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:03:18,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716465479] [2024-10-12 20:03:18,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:03:18,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:03:18,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:03:18,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:03:18,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:03:18,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716465479] [2024-10-12 20:03:18,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716465479] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:03:18,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:03:18,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-12 20:03:18,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623604433] [2024-10-12 20:03:18,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:03:18,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-12 20:03:18,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:03:18,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-12 20:03:18,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-12 20:03:18,930 INFO L87 Difference]: Start difference. First operand 503 states and 794 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:03:19,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:03:19,104 INFO L93 Difference]: Finished difference Result 3709 states and 6037 transitions. [2024-10-12 20:03:19,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 20:03:19,105 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2024-10-12 20:03:19,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:03:19,117 INFO L225 Difference]: With dead ends: 3709 [2024-10-12 20:03:19,117 INFO L226 Difference]: Without dead ends: 3251 [2024-10-12 20:03:19,119 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2024-10-12 20:03:19,121 INFO L432 NwaCegarLoop]: 155 mSDtfsCounter, 1681 mSDsluCounter, 1254 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1681 SdHoareTripleChecker+Valid, 1409 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 20:03:19,121 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1681 Valid, 1409 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 20:03:19,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3251 states. [2024-10-12 20:03:19,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3251 to 959. [2024-10-12 20:03:19,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 959 states, 958 states have (on average 1.592901878914405) internal successors, (1526), 958 states have internal predecessors, (1526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:03:19,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1526 transitions. [2024-10-12 20:03:19,156 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1526 transitions. Word has length 74 [2024-10-12 20:03:19,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:03:19,157 INFO L471 AbstractCegarLoop]: Abstraction has 959 states and 1526 transitions. [2024-10-12 20:03:19,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:03:19,158 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1526 transitions. [2024-10-12 20:03:19,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-10-12 20:03:19,158 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:03:19,159 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:03:19,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-12 20:03:19,160 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:03:19,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:03:19,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1989045912, now seen corresponding path program 1 times [2024-10-12 20:03:19,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:03:19,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497329246] [2024-10-12 20:03:19,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:03:19,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:03:19,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:03:19,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:03:19,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:03:19,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497329246] [2024-10-12 20:03:19,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497329246] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:03:19,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:03:19,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 20:03:19,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403655436] [2024-10-12 20:03:19,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:03:19,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 20:03:19,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:03:19,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 20:03:19,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 20:03:19,352 INFO L87 Difference]: Start difference. First operand 959 states and 1526 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:03:19,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:03:19,385 INFO L93 Difference]: Finished difference Result 993 states and 1575 transitions. [2024-10-12 20:03:19,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 20:03:19,386 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2024-10-12 20:03:19,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:03:19,389 INFO L225 Difference]: With dead ends: 993 [2024-10-12 20:03:19,389 INFO L226 Difference]: Without dead ends: 991 [2024-10-12 20:03:19,389 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 20:03:19,390 INFO L432 NwaCegarLoop]: 158 mSDtfsCounter, 0 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 20:03:19,391 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 467 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 20:03:19,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2024-10-12 20:03:19,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 991. [2024-10-12 20:03:19,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 991 states, 990 states have (on average 1.5737373737373737) internal successors, (1558), 990 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) [2024-10-12 20:03:19,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1558 transitions. [2024-10-12 20:03:19,410 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1558 transitions. Word has length 75 [2024-10-12 20:03:19,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:03:19,412 INFO L471 AbstractCegarLoop]: Abstraction has 991 states and 1558 transitions. [2024-10-12 20:03:19,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:03:19,412 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1558 transitions. [2024-10-12 20:03:19,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-10-12 20:03:19,413 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:03:19,413 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:03:19,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-12 20:03:19,414 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:03:19,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:03:19,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1531882991, now seen corresponding path program 1 times [2024-10-12 20:03:19,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:03:19,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864870423] [2024-10-12 20:03:19,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:03:19,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:03:19,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:03:19,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:03:19,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:03:19,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864870423] [2024-10-12 20:03:19,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864870423] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:03:19,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:03:19,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 20:03:19,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710570302] [2024-10-12 20:03:19,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:03:19,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 20:03:19,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:03:19,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 20:03:19,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:03:19,500 INFO L87 Difference]: Start difference. First operand 991 states and 1558 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:03:19,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:03:19,533 INFO L93 Difference]: Finished difference Result 2771 states and 4392 transitions. [2024-10-12 20:03:19,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 20:03:19,534 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2024-10-12 20:03:19,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:03:19,539 INFO L225 Difference]: With dead ends: 2771 [2024-10-12 20:03:19,539 INFO L226 Difference]: Without dead ends: 1825 [2024-10-12 20:03:19,540 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:03:19,541 INFO L432 NwaCegarLoop]: 156 mSDtfsCounter, 77 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 20:03:19,542 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 267 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 20:03:19,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1825 states. [2024-10-12 20:03:19,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1825 to 1807. [2024-10-12 20:03:19,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1807 states, 1806 states have (on average 1.566998892580288) internal successors, (2830), 1806 states have internal predecessors, (2830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:03:19,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1807 states to 1807 states and 2830 transitions. [2024-10-12 20:03:19,591 INFO L78 Accepts]: Start accepts. Automaton has 1807 states and 2830 transitions. Word has length 76 [2024-10-12 20:03:19,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:03:19,592 INFO L471 AbstractCegarLoop]: Abstraction has 1807 states and 2830 transitions. [2024-10-12 20:03:19,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:03:19,592 INFO L276 IsEmpty]: Start isEmpty. Operand 1807 states and 2830 transitions. [2024-10-12 20:03:19,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-10-12 20:03:19,592 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:03:19,593 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:03:19,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-12 20:03:19,593 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:03:19,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:03:19,593 INFO L85 PathProgramCache]: Analyzing trace with hash -446375905, now seen corresponding path program 1 times [2024-10-12 20:03:19,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:03:19,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526081517] [2024-10-12 20:03:19,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:03:19,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:03:19,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:03:19,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:03:19,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:03:19,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526081517] [2024-10-12 20:03:19,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526081517] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:03:19,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:03:19,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 20:03:19,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747050621] [2024-10-12 20:03:19,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:03:19,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 20:03:19,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:03:19,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 20:03:19,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:03:19,644 INFO L87 Difference]: Start difference. First operand 1807 states and 2830 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:03:19,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:03:19,699 INFO L93 Difference]: Finished difference Result 5075 states and 7952 transitions. [2024-10-12 20:03:19,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 20:03:19,700 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-10-12 20:03:19,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:03:19,708 INFO L225 Difference]: With dead ends: 5075 [2024-10-12 20:03:19,708 INFO L226 Difference]: Without dead ends: 3313 [2024-10-12 20:03:19,711 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:03:19,712 INFO L432 NwaCegarLoop]: 214 mSDtfsCounter, 93 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 20:03:19,712 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 339 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 20:03:19,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3313 states. [2024-10-12 20:03:19,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3313 to 3311. [2024-10-12 20:03:19,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3311 states, 3310 states have (on average 1.5510574018126888) internal successors, (5134), 3310 states have internal predecessors, (5134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:03:19,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3311 states to 3311 states and 5134 transitions. [2024-10-12 20:03:19,773 INFO L78 Accepts]: Start accepts. Automaton has 3311 states and 5134 transitions. Word has length 77 [2024-10-12 20:03:19,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:03:19,774 INFO L471 AbstractCegarLoop]: Abstraction has 3311 states and 5134 transitions. [2024-10-12 20:03:19,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:03:19,774 INFO L276 IsEmpty]: Start isEmpty. Operand 3311 states and 5134 transitions. [2024-10-12 20:03:19,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-10-12 20:03:19,775 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:03:19,775 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:03:19,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-12 20:03:19,775 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:03:19,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:03:19,775 INFO L85 PathProgramCache]: Analyzing trace with hash 925708607, now seen corresponding path program 1 times [2024-10-12 20:03:19,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:03:19,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107778195] [2024-10-12 20:03:19,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:03:19,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:03:19,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:03:19,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:03:19,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:03:19,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107778195] [2024-10-12 20:03:19,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107778195] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:03:19,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:03:19,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 20:03:19,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111990796] [2024-10-12 20:03:19,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:03:19,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 20:03:19,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:03:19,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 20:03:19,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:03:19,835 INFO L87 Difference]: Start difference. First operand 3311 states and 5134 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:03:19,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:03:19,933 INFO L93 Difference]: Finished difference Result 9331 states and 14416 transitions. [2024-10-12 20:03:19,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 20:03:19,935 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-10-12 20:03:19,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:03:19,950 INFO L225 Difference]: With dead ends: 9331 [2024-10-12 20:03:19,951 INFO L226 Difference]: Without dead ends: 6065 [2024-10-12 20:03:19,954 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:03:19,956 INFO L432 NwaCegarLoop]: 231 mSDtfsCounter, 97 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 20:03:19,956 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 352 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 20:03:19,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6065 states. [2024-10-12 20:03:20,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6065 to 6063. [2024-10-12 20:03:20,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6063 states, 6062 states have (on average 1.5278785879247774) internal successors, (9262), 6062 states have internal predecessors, (9262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:03:20,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6063 states to 6063 states and 9262 transitions. [2024-10-12 20:03:20,077 INFO L78 Accepts]: Start accepts. Automaton has 6063 states and 9262 transitions. Word has length 77 [2024-10-12 20:03:20,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:03:20,077 INFO L471 AbstractCegarLoop]: Abstraction has 6063 states and 9262 transitions. [2024-10-12 20:03:20,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:03:20,077 INFO L276 IsEmpty]: Start isEmpty. Operand 6063 states and 9262 transitions. [2024-10-12 20:03:20,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-10-12 20:03:20,078 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:03:20,078 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:03:20,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-12 20:03:20,078 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:03:20,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:03:20,078 INFO L85 PathProgramCache]: Analyzing trace with hash 537132629, now seen corresponding path program 1 times [2024-10-12 20:03:20,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:03:20,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789427668] [2024-10-12 20:03:20,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:03:20,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:03:20,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:03:20,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:03:20,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:03:20,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789427668] [2024-10-12 20:03:20,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789427668] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:03:20,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:03:20,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 20:03:20,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247656946] [2024-10-12 20:03:20,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:03:20,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 20:03:20,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:03:20,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 20:03:20,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:03:20,148 INFO L87 Difference]: Start difference. First operand 6063 states and 9262 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:03:20,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:03:20,236 INFO L93 Difference]: Finished difference Result 11958 states and 18356 transitions. [2024-10-12 20:03:20,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 20:03:20,236 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2024-10-12 20:03:20,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:03:20,257 INFO L225 Difference]: With dead ends: 11958 [2024-10-12 20:03:20,258 INFO L226 Difference]: Without dead ends: 8691 [2024-10-12 20:03:20,262 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:03:20,263 INFO L432 NwaCegarLoop]: 251 mSDtfsCounter, 102 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 20:03:20,263 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 364 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 20:03:20,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8691 states. [2024-10-12 20:03:20,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8691 to 8689. [2024-10-12 20:03:20,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8689 states, 8688 states have (on average 1.5193370165745856) internal successors, (13200), 8688 states have internal predecessors, (13200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:03:20,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8689 states to 8689 states and 13200 transitions. [2024-10-12 20:03:20,471 INFO L78 Accepts]: Start accepts. Automaton has 8689 states and 13200 transitions. Word has length 78 [2024-10-12 20:03:20,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:03:20,471 INFO L471 AbstractCegarLoop]: Abstraction has 8689 states and 13200 transitions. [2024-10-12 20:03:20,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:03:20,472 INFO L276 IsEmpty]: Start isEmpty. Operand 8689 states and 13200 transitions. [2024-10-12 20:03:20,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-10-12 20:03:20,475 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:03:20,475 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:03:20,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-12 20:03:20,475 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:03:20,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:03:20,476 INFO L85 PathProgramCache]: Analyzing trace with hash 2110410325, now seen corresponding path program 1 times [2024-10-12 20:03:20,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:03:20,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269500895] [2024-10-12 20:03:20,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:03:20,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:03:20,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:03:20,662 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-12 20:03:20,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:03:20,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269500895] [2024-10-12 20:03:20,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269500895] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:03:20,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:03:20,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-12 20:03:20,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840011427] [2024-10-12 20:03:20,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:03:20,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-12 20:03:20,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:03:20,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-12 20:03:20,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-12 20:03:20,664 INFO L87 Difference]: Start difference. First operand 8689 states and 13200 transitions. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:03:21,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:03:21,073 INFO L93 Difference]: Finished difference Result 33343 states and 51207 transitions. [2024-10-12 20:03:21,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 20:03:21,073 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 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 107 [2024-10-12 20:03:21,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:03:21,116 INFO L225 Difference]: With dead ends: 33343 [2024-10-12 20:03:21,117 INFO L226 Difference]: Without dead ends: 28989 [2024-10-12 20:03:21,125 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-10-12 20:03:21,126 INFO L432 NwaCegarLoop]: 272 mSDtfsCounter, 1468 mSDsluCounter, 1050 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1468 SdHoareTripleChecker+Valid, 1322 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 20:03:21,126 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1468 Valid, 1322 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 20:03:21,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28989 states. [2024-10-12 20:03:21,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28989 to 12977. [2024-10-12 20:03:21,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12977 states, 12976 states have (on average 1.5191122071516645) internal successors, (19712), 12976 states have internal predecessors, (19712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:03:21,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12977 states to 12977 states and 19712 transitions. [2024-10-12 20:03:21,587 INFO L78 Accepts]: Start accepts. Automaton has 12977 states and 19712 transitions. Word has length 107 [2024-10-12 20:03:21,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:03:21,588 INFO L471 AbstractCegarLoop]: Abstraction has 12977 states and 19712 transitions. [2024-10-12 20:03:21,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:03:21,588 INFO L276 IsEmpty]: Start isEmpty. Operand 12977 states and 19712 transitions. [2024-10-12 20:03:21,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-10-12 20:03:21,594 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:03:21,595 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:03:21,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-12 20:03:21,595 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:03:21,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:03:21,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1034416659, now seen corresponding path program 1 times [2024-10-12 20:03:21,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:03:21,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578799898] [2024-10-12 20:03:21,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:03:21,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:03:21,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:03:21,786 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-12 20:03:21,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:03:21,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578799898] [2024-10-12 20:03:21,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578799898] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:03:21,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:03:21,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-12 20:03:21,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543016415] [2024-10-12 20:03:21,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:03:21,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-12 20:03:21,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:03:21,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-12 20:03:21,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-12 20:03:21,790 INFO L87 Difference]: Start difference. First operand 12977 states and 19712 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:03:22,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:03:22,303 INFO L93 Difference]: Finished difference Result 37631 states and 57719 transitions. [2024-10-12 20:03:22,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 20:03:22,304 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 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 107 [2024-10-12 20:03:22,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:03:22,356 INFO L225 Difference]: With dead ends: 37631 [2024-10-12 20:03:22,356 INFO L226 Difference]: Without dead ends: 33277 [2024-10-12 20:03:22,367 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-10-12 20:03:22,368 INFO L432 NwaCegarLoop]: 270 mSDtfsCounter, 1565 mSDsluCounter, 1068 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1565 SdHoareTripleChecker+Valid, 1338 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 20:03:22,368 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1565 Valid, 1338 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 20:03:22,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33277 states. [2024-10-12 20:03:22,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33277 to 17265. [2024-10-12 20:03:22,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17265 states, 17264 states have (on average 1.5189990732159406) internal successors, (26224), 17264 states have internal predecessors, (26224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:03:22,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17265 states to 17265 states and 26224 transitions. [2024-10-12 20:03:22,821 INFO L78 Accepts]: Start accepts. Automaton has 17265 states and 26224 transitions. Word has length 107 [2024-10-12 20:03:22,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:03:22,821 INFO L471 AbstractCegarLoop]: Abstraction has 17265 states and 26224 transitions. [2024-10-12 20:03:22,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:03:22,822 INFO L276 IsEmpty]: Start isEmpty. Operand 17265 states and 26224 transitions. [2024-10-12 20:03:22,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-10-12 20:03:22,827 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:03:22,827 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:03:22,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-12 20:03:22,828 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:03:22,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:03:22,828 INFO L85 PathProgramCache]: Analyzing trace with hash 409916945, now seen corresponding path program 1 times [2024-10-12 20:03:22,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:03:22,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960199335] [2024-10-12 20:03:22,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:03:22,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:03:22,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:03:23,007 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-12 20:03:23,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:03:23,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960199335] [2024-10-12 20:03:23,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960199335] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:03:23,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:03:23,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-12 20:03:23,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119125689] [2024-10-12 20:03:23,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:03:23,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-12 20:03:23,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:03:23,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-12 20:03:23,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-12 20:03:23,010 INFO L87 Difference]: Start difference. First operand 17265 states and 26224 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:03:23,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:03:23,654 INFO L93 Difference]: Finished difference Result 41919 states and 64231 transitions. [2024-10-12 20:03:23,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 20:03:23,654 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2024-10-12 20:03:23,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:03:23,709 INFO L225 Difference]: With dead ends: 41919 [2024-10-12 20:03:23,709 INFO L226 Difference]: Without dead ends: 37565 [2024-10-12 20:03:23,718 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-10-12 20:03:23,718 INFO L432 NwaCegarLoop]: 270 mSDtfsCounter, 1440 mSDsluCounter, 1129 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1440 SdHoareTripleChecker+Valid, 1399 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 20:03:23,718 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1440 Valid, 1399 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 20:03:23,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37565 states. [2024-10-12 20:03:24,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37565 to 21553. [2024-10-12 20:03:24,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21553 states, 21552 states have (on average 1.5189309576837418) internal successors, (32736), 21552 states have internal predecessors, (32736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:03:24,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21553 states to 21553 states and 32736 transitions. [2024-10-12 20:03:24,287 INFO L78 Accepts]: Start accepts. Automaton has 21553 states and 32736 transitions. Word has length 107 [2024-10-12 20:03:24,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:03:24,288 INFO L471 AbstractCegarLoop]: Abstraction has 21553 states and 32736 transitions. [2024-10-12 20:03:24,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:03:24,288 INFO L276 IsEmpty]: Start isEmpty. Operand 21553 states and 32736 transitions. [2024-10-12 20:03:24,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-10-12 20:03:24,293 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:03:24,293 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:03:24,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-12 20:03:24,293 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:03:24,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:03:24,294 INFO L85 PathProgramCache]: Analyzing trace with hash -59114348, now seen corresponding path program 1 times [2024-10-12 20:03:24,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:03:24,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519469275] [2024-10-12 20:03:24,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:03:24,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:03:24,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:03:24,429 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-12 20:03:24,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:03:24,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519469275] [2024-10-12 20:03:24,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519469275] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:03:24,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:03:24,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-12 20:03:24,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005004498] [2024-10-12 20:03:24,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:03:24,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-12 20:03:24,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:03:24,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-12 20:03:24,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-12 20:03:24,431 INFO L87 Difference]: Start difference. First operand 21553 states and 32736 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:03:24,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:03:24,988 INFO L93 Difference]: Finished difference Result 46207 states and 70743 transitions. [2024-10-12 20:03:24,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 20:03:24,989 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2024-10-12 20:03:24,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:03:25,069 INFO L225 Difference]: With dead ends: 46207 [2024-10-12 20:03:25,069 INFO L226 Difference]: Without dead ends: 41853 [2024-10-12 20:03:25,079 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-10-12 20:03:25,079 INFO L432 NwaCegarLoop]: 270 mSDtfsCounter, 1276 mSDsluCounter, 1264 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1276 SdHoareTripleChecker+Valid, 1534 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 20:03:25,080 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1276 Valid, 1534 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 20:03:25,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41853 states. [2024-10-12 20:03:25,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41853 to 25841. [2024-10-12 20:03:25,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25841 states, 25840 states have (on average 1.5188854489164088) internal successors, (39248), 25840 states have internal predecessors, (39248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:03:25,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25841 states to 25841 states and 39248 transitions. [2024-10-12 20:03:25,767 INFO L78 Accepts]: Start accepts. Automaton has 25841 states and 39248 transitions. Word has length 107 [2024-10-12 20:03:25,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:03:25,768 INFO L471 AbstractCegarLoop]: Abstraction has 25841 states and 39248 transitions. [2024-10-12 20:03:25,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:03:25,768 INFO L276 IsEmpty]: Start isEmpty. Operand 25841 states and 39248 transitions. [2024-10-12 20:03:25,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-10-12 20:03:25,775 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:03:25,775 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:03:25,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-12 20:03:25,775 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:03:25,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:03:25,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1312970164, now seen corresponding path program 1 times [2024-10-12 20:03:25,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:03:25,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067066608] [2024-10-12 20:03:25,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:03:25,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:03:25,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:03:25,952 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-12 20:03:25,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:03:25,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067066608] [2024-10-12 20:03:25,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067066608] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:03:25,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:03:25,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-12 20:03:25,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337371084] [2024-10-12 20:03:25,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:03:25,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-12 20:03:25,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:03:25,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-12 20:03:25,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-12 20:03:25,955 INFO L87 Difference]: Start difference. First operand 25841 states and 39248 transitions. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:03:26,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:03:26,735 INFO L93 Difference]: Finished difference Result 50495 states and 77255 transitions. [2024-10-12 20:03:26,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 20:03:26,736 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 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 107 [2024-10-12 20:03:26,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:03:26,797 INFO L225 Difference]: With dead ends: 50495 [2024-10-12 20:03:26,797 INFO L226 Difference]: Without dead ends: 46141 [2024-10-12 20:03:26,809 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-10-12 20:03:26,810 INFO L432 NwaCegarLoop]: 269 mSDtfsCounter, 1313 mSDsluCounter, 1256 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1313 SdHoareTripleChecker+Valid, 1525 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 20:03:26,810 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1313 Valid, 1525 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 20:03:26,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46141 states. [2024-10-12 20:03:27,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46141 to 30129. [2024-10-12 20:03:27,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30129 states, 30128 states have (on average 1.5188528943175783) internal successors, (45760), 30128 states have internal predecessors, (45760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:03:27,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30129 states to 30129 states and 45760 transitions. [2024-10-12 20:03:27,437 INFO L78 Accepts]: Start accepts. Automaton has 30129 states and 45760 transitions. Word has length 107 [2024-10-12 20:03:27,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:03:27,438 INFO L471 AbstractCegarLoop]: Abstraction has 30129 states and 45760 transitions. [2024-10-12 20:03:27,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:03:27,438 INFO L276 IsEmpty]: Start isEmpty. Operand 30129 states and 45760 transitions. [2024-10-12 20:03:27,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-10-12 20:03:27,445 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:03:27,445 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:03:27,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-12 20:03:27,445 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:03:27,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:03:27,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1733612164, now seen corresponding path program 1 times [2024-10-12 20:03:27,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:03:27,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103555284] [2024-10-12 20:03:27,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:03:27,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:03:27,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:03:27,558 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:03:27,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:03:27,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103555284] [2024-10-12 20:03:27,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103555284] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:03:27,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:03:27,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 20:03:27,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849838970] [2024-10-12 20:03:27,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:03:27,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 20:03:27,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:03:27,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 20:03:27,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:03:27,559 INFO L87 Difference]: Start difference. First operand 30129 states and 45760 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:03:28,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:03:28,010 INFO L93 Difference]: Finished difference Result 60213 states and 91474 transitions. [2024-10-12 20:03:28,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 20:03:28,010 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2024-10-12 20:03:28,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:03:28,046 INFO L225 Difference]: With dead ends: 60213 [2024-10-12 20:03:28,046 INFO L226 Difference]: Without dead ends: 30131 [2024-10-12 20:03:28,068 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:03:28,069 INFO L432 NwaCegarLoop]: 209 mSDtfsCounter, 81 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 20:03:28,069 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 355 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 20:03:28,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30131 states. [2024-10-12 20:03:28,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30131 to 30129. [2024-10-12 20:03:28,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30129 states, 30128 states have (on average 1.507700477960701) internal successors, (45424), 30128 states have internal predecessors, (45424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:03:28,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30129 states to 30129 states and 45424 transitions. [2024-10-12 20:03:28,791 INFO L78 Accepts]: Start accepts. Automaton has 30129 states and 45424 transitions. Word has length 108 [2024-10-12 20:03:28,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:03:28,791 INFO L471 AbstractCegarLoop]: Abstraction has 30129 states and 45424 transitions. [2024-10-12 20:03:28,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:03:28,791 INFO L276 IsEmpty]: Start isEmpty. Operand 30129 states and 45424 transitions. [2024-10-12 20:03:28,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-10-12 20:03:28,796 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:03:28,796 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:03:28,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-12 20:03:28,796 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:03:28,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:03:28,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1162383707, now seen corresponding path program 1 times [2024-10-12 20:03:28,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:03:28,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99370672] [2024-10-12 20:03:28,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:03:28,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:03:28,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:03:28,909 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:03:28,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:03:28,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99370672] [2024-10-12 20:03:28,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99370672] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:03:28,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:03:28,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 20:03:28,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407934921] [2024-10-12 20:03:28,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:03:28,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 20:03:28,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:03:28,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 20:03:28,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:03:28,912 INFO L87 Difference]: Start difference. First operand 30129 states and 45424 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:03:29,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:03:29,205 INFO L93 Difference]: Finished difference Result 45173 states and 68114 transitions. [2024-10-12 20:03:29,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 20:03:29,205 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2024-10-12 20:03:29,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:03:29,226 INFO L225 Difference]: With dead ends: 45173 [2024-10-12 20:03:29,227 INFO L226 Difference]: Without dead ends: 15091 [2024-10-12 20:03:29,248 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:03:29,249 INFO L432 NwaCegarLoop]: 200 mSDtfsCounter, 75 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 20:03:29,249 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 336 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 20:03:29,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15091 states. [2024-10-12 20:03:29,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15091 to 15089. [2024-10-12 20:03:29,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15089 states, 15088 states have (on average 1.4957582184517497) internal successors, (22568), 15088 states have internal predecessors, (22568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:03:29,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15089 states to 15089 states and 22568 transitions. [2024-10-12 20:03:29,630 INFO L78 Accepts]: Start accepts. Automaton has 15089 states and 22568 transitions. Word has length 108 [2024-10-12 20:03:29,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:03:29,630 INFO L471 AbstractCegarLoop]: Abstraction has 15089 states and 22568 transitions. [2024-10-12 20:03:29,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:03:29,630 INFO L276 IsEmpty]: Start isEmpty. Operand 15089 states and 22568 transitions. [2024-10-12 20:03:29,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-10-12 20:03:29,632 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:03:29,632 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:03:29,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-12 20:03:29,633 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:03:29,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:03:29,633 INFO L85 PathProgramCache]: Analyzing trace with hash 960971590, now seen corresponding path program 1 times [2024-10-12 20:03:29,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:03:29,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243976884] [2024-10-12 20:03:29,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:03:29,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:03:29,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:03:30,508 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:03:30,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:03:30,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243976884] [2024-10-12 20:03:30,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243976884] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 20:03:30,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829887350] [2024-10-12 20:03:30,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:03:30,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 20:03:30,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 20:03:30,511 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 20:03:30,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 20:03:30,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:03:30,636 INFO L255 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-12 20:03:30,646 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 20:03:31,122 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:03:31,123 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 20:03:31,503 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:03:31,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829887350] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 20:03:31,504 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 20:03:31,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 7] total 21 [2024-10-12 20:03:31,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529247287] [2024-10-12 20:03:31,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 20:03:31,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-12 20:03:31,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:03:31,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-12 20:03:31,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2024-10-12 20:03:31,505 INFO L87 Difference]: Start difference. First operand 15089 states and 22568 transitions. Second operand has 21 states, 21 states have (on average 15.19047619047619) internal successors, (319), 21 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:03:49,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:03:49,127 INFO L93 Difference]: Finished difference Result 178325 states and 265048 transitions. [2024-10-12 20:03:49,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2024-10-12 20:03:49,127 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 15.19047619047619) internal successors, (319), 21 states have internal predecessors, (319), 0 states have call successors, (0), 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 108 [2024-10-12 20:03:49,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:03:49,305 INFO L225 Difference]: With dead ends: 178325 [2024-10-12 20:03:49,306 INFO L226 Difference]: Without dead ends: 168019 [2024-10-12 20:03:49,342 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19036 ImplicationChecksByTransitivity, 12.8s TimeCoverageRelationStatistics Valid=5614, Invalid=37858, Unknown=0, NotChecked=0, Total=43472 [2024-10-12 20:03:49,343 INFO L432 NwaCegarLoop]: 211 mSDtfsCounter, 8242 mSDsluCounter, 2440 mSDsCounter, 0 mSdLazyCounter, 2708 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8242 SdHoareTripleChecker+Valid, 2651 SdHoareTripleChecker+Invalid, 2840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 2708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-10-12 20:03:49,343 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8242 Valid, 2651 Invalid, 2840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 2708 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-10-12 20:03:49,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168019 states. [2024-10-12 20:03:52,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168019 to 136653. [2024-10-12 20:03:52,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136653 states, 136652 states have (on average 1.4702455873313234) internal successors, (200912), 136652 states have internal predecessors, (200912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:03:52,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136653 states to 136653 states and 200912 transitions. [2024-10-12 20:03:52,986 INFO L78 Accepts]: Start accepts. Automaton has 136653 states and 200912 transitions. Word has length 108 [2024-10-12 20:03:52,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:03:52,986 INFO L471 AbstractCegarLoop]: Abstraction has 136653 states and 200912 transitions. [2024-10-12 20:03:52,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 15.19047619047619) internal successors, (319), 21 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:03:52,987 INFO L276 IsEmpty]: Start isEmpty. Operand 136653 states and 200912 transitions. [2024-10-12 20:03:52,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-10-12 20:03:52,990 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:03:52,990 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:03:53,005 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-12 20:03:53,190 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,SelfDestructingSolverStorable17 [2024-10-12 20:03:53,191 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:03:53,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:03:53,191 INFO L85 PathProgramCache]: Analyzing trace with hash -94093581, now seen corresponding path program 1 times [2024-10-12 20:03:53,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:03:53,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23866085] [2024-10-12 20:03:53,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:03:53,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:03:53,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:03:53,328 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 20:03:53,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:03:53,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23866085] [2024-10-12 20:03:53,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23866085] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:03:53,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:03:53,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-12 20:03:53,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340285551] [2024-10-12 20:03:53,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:03:53,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-12 20:03:53,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:03:53,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-12 20:03:53,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-12 20:03:53,331 INFO L87 Difference]: Start difference. First operand 136653 states and 200912 transitions. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:03:57,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:03:57,424 INFO L93 Difference]: Finished difference Result 250087 states and 370021 transitions. [2024-10-12 20:03:57,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 20:03:57,425 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 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 109 [2024-10-12 20:03:57,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:03:57,746 INFO L225 Difference]: With dead ends: 250087 [2024-10-12 20:03:57,747 INFO L226 Difference]: Without dead ends: 232957 [2024-10-12 20:03:57,812 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-10-12 20:03:57,812 INFO L432 NwaCegarLoop]: 290 mSDtfsCounter, 1166 mSDsluCounter, 1813 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1166 SdHoareTripleChecker+Valid, 2103 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 20:03:57,813 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1166 Valid, 2103 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 20:03:57,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232957 states. [2024-10-12 20:04:02,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232957 to 154389. [2024-10-12 20:04:02,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154389 states, 154388 states have (on average 1.4696090369717854) internal successors, (226890), 154388 states have internal predecessors, (226890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:04:02,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154389 states to 154389 states and 226890 transitions. [2024-10-12 20:04:02,584 INFO L78 Accepts]: Start accepts. Automaton has 154389 states and 226890 transitions. Word has length 109 [2024-10-12 20:04:02,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:04:02,584 INFO L471 AbstractCegarLoop]: Abstraction has 154389 states and 226890 transitions. [2024-10-12 20:04:02,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:04:02,585 INFO L276 IsEmpty]: Start isEmpty. Operand 154389 states and 226890 transitions. [2024-10-12 20:04:02,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-10-12 20:04:02,588 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:04:02,588 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:04:02,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-12 20:04:02,588 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:04:02,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:04:02,589 INFO L85 PathProgramCache]: Analyzing trace with hash -734798986, now seen corresponding path program 1 times [2024-10-12 20:04:02,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:04:02,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923485479] [2024-10-12 20:04:02,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:04:02,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:04:02,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:04:02,664 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:04:02,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:04:02,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923485479] [2024-10-12 20:04:02,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923485479] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:04:02,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:04:02,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 20:04:02,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128907061] [2024-10-12 20:04:02,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:04:02,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 20:04:02,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:04:02,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 20:04:02,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:04:02,666 INFO L87 Difference]: Start difference. First operand 154389 states and 226890 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:04:04,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:04:04,788 INFO L93 Difference]: Finished difference Result 217124 states and 318312 transitions. [2024-10-12 20:04:04,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 20:04:04,789 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2024-10-12 20:04:04,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:04:04,869 INFO L225 Difference]: With dead ends: 217124 [2024-10-12 20:04:04,870 INFO L226 Difference]: Without dead ends: 62782 [2024-10-12 20:04:04,915 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:04:04,915 INFO L432 NwaCegarLoop]: 195 mSDtfsCounter, 63 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 20:04:04,916 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 326 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 20:04:04,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62782 states. [2024-10-12 20:04:06,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62782 to 56428. [2024-10-12 20:04:06,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56428 states, 56427 states have (on average 1.4489162989349071) internal successors, (81758), 56427 states have internal predecessors, (81758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:04:06,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56428 states to 56428 states and 81758 transitions. [2024-10-12 20:04:06,796 INFO L78 Accepts]: Start accepts. Automaton has 56428 states and 81758 transitions. Word has length 110 [2024-10-12 20:04:06,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:04:06,796 INFO L471 AbstractCegarLoop]: Abstraction has 56428 states and 81758 transitions. [2024-10-12 20:04:06,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:04:06,796 INFO L276 IsEmpty]: Start isEmpty. Operand 56428 states and 81758 transitions. [2024-10-12 20:04:06,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-10-12 20:04:06,798 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:04:06,799 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:04:06,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-12 20:04:06,799 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:04:06,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:04:06,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1351270500, now seen corresponding path program 1 times [2024-10-12 20:04:06,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:04:06,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339500865] [2024-10-12 20:04:06,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:04:06,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:04:06,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:04:07,122 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:04:07,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:04:07,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339500865] [2024-10-12 20:04:07,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339500865] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 20:04:07,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097286472] [2024-10-12 20:04:07,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:04:07,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 20:04:07,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 20:04:07,124 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 20:04:07,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 20:04:07,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:04:07,228 INFO L255 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-12 20:04:07,230 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 20:04:07,664 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:04:07,664 INFO L311 TraceCheckSpWp]: Computing backward predicates...