./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label08.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label08.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 20bccc5c4039b31e1359e00bb81f308547d82590fa0687937b9518c1e6a7a105 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 02:41:11,648 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 02:41:11,735 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 02:41:11,741 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 02:41:11,743 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 02:41:11,774 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 02:41:11,774 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 02:41:11,775 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 02:41:11,776 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 02:41:11,777 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 02:41:11,777 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 02:41:11,778 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 02:41:11,778 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 02:41:11,779 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 02:41:11,780 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 02:41:11,781 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 02:41:11,781 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 02:41:11,781 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 02:41:11,782 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 02:41:11,782 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 02:41:11,782 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 02:41:11,783 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 02:41:11,783 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 02:41:11,783 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 02:41:11,784 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 02:41:11,784 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 02:41:11,784 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 02:41:11,785 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 02:41:11,785 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 02:41:11,785 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 02:41:11,786 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 02:41:11,786 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 02:41:11,786 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 02:41:11,787 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 02:41:11,787 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 02:41:11,787 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 02:41:11,787 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 02:41:11,788 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 02:41:11,788 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 02:41:11,788 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 02:41:11,795 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 02:41:11,796 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 02:41:11,796 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 20bccc5c4039b31e1359e00bb81f308547d82590fa0687937b9518c1e6a7a105 [2024-10-24 02:41:12,083 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 02:41:12,111 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 02:41:12,114 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 02:41:12,115 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 02:41:12,116 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 02:41:12,117 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label08.c [2024-10-24 02:41:13,536 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 02:41:13,979 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 02:41:13,980 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label08.c [2024-10-24 02:41:14,014 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e910743b/713a1194b50542e68f125a3b216219b4/FLAGe01117c15 [2024-10-24 02:41:14,031 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e910743b/713a1194b50542e68f125a3b216219b4 [2024-10-24 02:41:14,034 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 02:41:14,036 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 02:41:14,039 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 02:41:14,039 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 02:41:14,044 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 02:41:14,045 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:41:14" (1/1) ... [2024-10-24 02:41:14,046 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8f5c59d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:41:14, skipping insertion in model container [2024-10-24 02:41:14,046 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:41:14" (1/1) ... [2024-10-24 02:41:14,172 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 02:41:14,559 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/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label08.c[6354,6367] [2024-10-24 02:41:14,602 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/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label08.c[9861,9874] [2024-10-24 02:41:15,390 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 02:41:15,402 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 02:41:15,440 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/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label08.c[6354,6367] [2024-10-24 02:41:15,447 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/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label08.c[9861,9874] [2024-10-24 02:41:15,828 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 02:41:15,858 INFO L204 MainTranslator]: Completed translation [2024-10-24 02:41:15,859 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:41:15 WrapperNode [2024-10-24 02:41:15,860 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 02:41:15,861 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 02:41:15,861 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 02:41:15,861 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 02:41:15,868 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:41:15" (1/1) ... [2024-10-24 02:41:15,916 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:41:15" (1/1) ... [2024-10-24 02:41:16,248 INFO L138 Inliner]: procedures = 33, calls = 19, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 4983 [2024-10-24 02:41:16,249 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 02:41:16,250 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 02:41:16,250 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 02:41:16,250 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 02:41:16,259 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:41:15" (1/1) ... [2024-10-24 02:41:16,259 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:41:15" (1/1) ... [2024-10-24 02:41:16,458 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:41:15" (1/1) ... [2024-10-24 02:41:16,562 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]. [2024-10-24 02:41:16,562 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:41:15" (1/1) ... [2024-10-24 02:41:16,563 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:41:15" (1/1) ... [2024-10-24 02:41:16,717 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:41:15" (1/1) ... [2024-10-24 02:41:16,742 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:41:15" (1/1) ... [2024-10-24 02:41:16,782 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:41:15" (1/1) ... [2024-10-24 02:41:16,808 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:41:15" (1/1) ... [2024-10-24 02:41:16,882 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 02:41:16,884 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 02:41:16,884 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 02:41:16,884 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 02:41:16,885 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:41:15" (1/1) ... [2024-10-24 02:41:16,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 02:41:16,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:41:16,914 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) [2024-10-24 02:41:16,916 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 [2024-10-24 02:41:16,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 02:41:16,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 02:41:16,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 02:41:16,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 02:41:17,055 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 02:41:17,056 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 02:41:21,273 INFO L? ?]: Removed 732 outVars from TransFormulas that were not future-live. [2024-10-24 02:41:21,273 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 02:41:21,349 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 02:41:21,349 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-24 02:41:21,350 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:41:21 BoogieIcfgContainer [2024-10-24 02:41:21,350 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 02:41:21,352 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 02:41:21,352 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 02:41:21,355 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 02:41:21,355 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:41:14" (1/3) ... [2024-10-24 02:41:21,356 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e44bcd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:41:21, skipping insertion in model container [2024-10-24 02:41:21,356 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:41:15" (2/3) ... [2024-10-24 02:41:21,357 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e44bcd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:41:21, skipping insertion in model container [2024-10-24 02:41:21,357 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:41:21" (3/3) ... [2024-10-24 02:41:21,358 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label08.c [2024-10-24 02:41:21,375 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 02:41:21,375 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-24 02:41:21,472 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 02:41:21,479 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;@49109c57, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 02:41:21,479 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-24 02:41:21,488 INFO L276 IsEmpty]: Start isEmpty. Operand has 807 states, 804 states have (on average 1.9800995024875623) internal successors, (1592), 806 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:21,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-10-24 02:41:21,496 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:41:21,496 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:41:21,497 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:41:21,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:41:21,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1841439881, now seen corresponding path program 1 times [2024-10-24 02:41:21,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:41:21,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199600616] [2024-10-24 02:41:21,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:41:21,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:41:21,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:41:21,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:41:21,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:41:21,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199600616] [2024-10-24 02:41:21,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199600616] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:41:21,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:41:21,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 02:41:21,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952172459] [2024-10-24 02:41:21,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:41:21,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-24 02:41:21,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:41:21,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-24 02:41:21,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 02:41:21,810 INFO L87 Difference]: Start difference. First operand has 807 states, 804 states have (on average 1.9800995024875623) internal successors, (1592), 806 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:21,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:41:21,915 INFO L93 Difference]: Finished difference Result 1594 states and 3146 transitions. [2024-10-24 02:41:21,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-24 02:41:21,918 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2024-10-24 02:41:21,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:41:21,940 INFO L225 Difference]: With dead ends: 1594 [2024-10-24 02:41:21,940 INFO L226 Difference]: Without dead ends: 803 [2024-10-24 02:41:21,949 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 02:41:21,953 INFO L432 NwaCegarLoop]: 1521 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1521 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:41:21,954 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1521 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:41:21,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2024-10-24 02:41:22,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 803. [2024-10-24 02:41:22,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 801 states have (on average 1.898876404494382) internal successors, (1521), 802 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:22,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1521 transitions. [2024-10-24 02:41:22,039 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1521 transitions. Word has length 17 [2024-10-24 02:41:22,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:41:22,040 INFO L471 AbstractCegarLoop]: Abstraction has 803 states and 1521 transitions. [2024-10-24 02:41:22,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:22,041 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1521 transitions. [2024-10-24 02:41:22,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-10-24 02:41:22,043 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:41:22,043 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:41:22,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 02:41:22,044 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:41:22,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:41:22,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1254633867, now seen corresponding path program 1 times [2024-10-24 02:41:22,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:41:22,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203999127] [2024-10-24 02:41:22,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:41:22,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:41:22,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:41:22,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:41:22,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:41:22,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203999127] [2024-10-24 02:41:22,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203999127] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:41:22,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:41:22,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 02:41:22,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30151235] [2024-10-24 02:41:22,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:41:22,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 02:41:22,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:41:22,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 02:41:22,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 02:41:22,217 INFO L87 Difference]: Start difference. First operand 803 states and 1521 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:22,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:41:22,335 INFO L93 Difference]: Finished difference Result 864 states and 1616 transitions. [2024-10-24 02:41:22,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 02:41:22,336 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2024-10-24 02:41:22,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:41:22,340 INFO L225 Difference]: With dead ends: 864 [2024-10-24 02:41:22,340 INFO L226 Difference]: Without dead ends: 832 [2024-10-24 02:41:22,341 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 [2024-10-24 02:41:22,342 INFO L432 NwaCegarLoop]: 1516 mSDtfsCounter, 45 mSDsluCounter, 3011 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 4527 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 02:41:22,344 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 4527 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 02:41:22,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2024-10-24 02:41:22,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 803. [2024-10-24 02:41:22,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 801 states have (on average 1.8789013732833957) internal successors, (1505), 802 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:22,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1505 transitions. [2024-10-24 02:41:22,370 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1505 transitions. Word has length 17 [2024-10-24 02:41:22,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:41:22,370 INFO L471 AbstractCegarLoop]: Abstraction has 803 states and 1505 transitions. [2024-10-24 02:41:22,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:22,371 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1505 transitions. [2024-10-24 02:41:22,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-10-24 02:41:22,372 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:41:22,373 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] [2024-10-24 02:41:22,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 02:41:22,373 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:41:22,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:41:22,374 INFO L85 PathProgramCache]: Analyzing trace with hash 479405031, now seen corresponding path program 1 times [2024-10-24 02:41:22,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:41:22,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771478874] [2024-10-24 02:41:22,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:41:22,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:41:22,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:41:22,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:41:22,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:41:22,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771478874] [2024-10-24 02:41:22,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771478874] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:41:22,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:41:22,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 02:41:22,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926301643] [2024-10-24 02:41:22,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:41:22,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:41:22,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:41:22,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:41:22,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:41:22,485 INFO L87 Difference]: Start difference. First operand 803 states and 1505 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:25,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:41:25,703 INFO L93 Difference]: Finished difference Result 2307 states and 4378 transitions. [2024-10-24 02:41:25,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:41:25,704 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2024-10-24 02:41:25,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:41:25,710 INFO L225 Difference]: With dead ends: 2307 [2024-10-24 02:41:25,710 INFO L226 Difference]: Without dead ends: 1554 [2024-10-24 02:41:25,711 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:41:25,712 INFO L432 NwaCegarLoop]: 171 mSDtfsCounter, 906 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2380 mSolverCounterSat, 711 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 906 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 3091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 711 IncrementalHoareTripleChecker+Valid, 2380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-10-24 02:41:25,713 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [906 Valid, 178 Invalid, 3091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [711 Valid, 2380 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-10-24 02:41:25,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2024-10-24 02:41:25,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1554. [2024-10-24 02:41:25,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1554 states, 1552 states have (on average 1.8324742268041236) internal successors, (2844), 1553 states have internal predecessors, (2844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:25,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2844 transitions. [2024-10-24 02:41:25,743 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2844 transitions. Word has length 29 [2024-10-24 02:41:25,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:41:25,743 INFO L471 AbstractCegarLoop]: Abstraction has 1554 states and 2844 transitions. [2024-10-24 02:41:25,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:25,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2844 transitions. [2024-10-24 02:41:25,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-10-24 02:41:25,744 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:41:25,744 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] [2024-10-24 02:41:25,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 02:41:25,745 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:41:25,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:41:25,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1671742577, now seen corresponding path program 1 times [2024-10-24 02:41:25,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:41:25,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952159136] [2024-10-24 02:41:25,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:41:25,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:41:25,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:41:25,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:41:25,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:41:25,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952159136] [2024-10-24 02:41:25,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952159136] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:41:25,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:41:25,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 02:41:25,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037637891] [2024-10-24 02:41:25,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:41:25,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 02:41:25,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:41:25,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 02:41:25,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 02:41:25,870 INFO L87 Difference]: Start difference. First operand 1554 states and 2844 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:25,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:41:26,000 INFO L93 Difference]: Finished difference Result 1728 states and 3120 transitions. [2024-10-24 02:41:26,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 02:41:26,001 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2024-10-24 02:41:26,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:41:26,007 INFO L225 Difference]: With dead ends: 1728 [2024-10-24 02:41:26,008 INFO L226 Difference]: Without dead ends: 1699 [2024-10-24 02:41:26,010 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-10-24 02:41:26,011 INFO L432 NwaCegarLoop]: 1498 mSDtfsCounter, 4578 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4578 SdHoareTripleChecker+Valid, 1841 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 02:41:26,011 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4578 Valid, 1841 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 02:41:26,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1699 states. [2024-10-24 02:41:26,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1699 to 1581. [2024-10-24 02:41:26,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1581 states, 1579 states have (on average 1.8283723875870805) internal successors, (2887), 1580 states have internal predecessors, (2887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:26,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 2887 transitions. [2024-10-24 02:41:26,048 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 2887 transitions. Word has length 32 [2024-10-24 02:41:26,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:41:26,049 INFO L471 AbstractCegarLoop]: Abstraction has 1581 states and 2887 transitions. [2024-10-24 02:41:26,049 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:26,049 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 2887 transitions. [2024-10-24 02:41:26,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-24 02:41:26,051 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:41:26,051 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] [2024-10-24 02:41:26,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 02:41:26,052 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:41:26,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:41:26,052 INFO L85 PathProgramCache]: Analyzing trace with hash -349538145, now seen corresponding path program 1 times [2024-10-24 02:41:26,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:41:26,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374299439] [2024-10-24 02:41:26,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:41:26,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:41:26,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:41:26,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:41:26,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:41:26,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374299439] [2024-10-24 02:41:26,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374299439] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:41:26,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:41:26,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:41:26,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609770364] [2024-10-24 02:41:26,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:41:26,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:41:26,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:41:26,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:41:26,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:41:26,122 INFO L87 Difference]: Start difference. First operand 1581 states and 2887 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 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) [2024-10-24 02:41:26,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:41:26,160 INFO L93 Difference]: Finished difference Result 1682 states and 3046 transitions. [2024-10-24 02:41:26,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:41:26,161 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 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 [2024-10-24 02:41:26,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:41:26,168 INFO L225 Difference]: With dead ends: 1682 [2024-10-24 02:41:26,168 INFO L226 Difference]: Without dead ends: 1626 [2024-10-24 02:41:26,169 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 [2024-10-24 02:41:26,170 INFO L432 NwaCegarLoop]: 1500 mSDtfsCounter, 1464 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1464 SdHoareTripleChecker+Valid, 1540 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:41:26,170 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1464 Valid, 1540 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:41:26,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1626 states. [2024-10-24 02:41:26,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1626 to 1624. [2024-10-24 02:41:26,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1624 states, 1622 states have (on average 1.8205918618988903) internal successors, (2953), 1623 states have internal predecessors, (2953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:26,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1624 states to 1624 states and 2953 transitions. [2024-10-24 02:41:26,205 INFO L78 Accepts]: Start accepts. Automaton has 1624 states and 2953 transitions. Word has length 34 [2024-10-24 02:41:26,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:41:26,206 INFO L471 AbstractCegarLoop]: Abstraction has 1624 states and 2953 transitions. [2024-10-24 02:41:26,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 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) [2024-10-24 02:41:26,206 INFO L276 IsEmpty]: Start isEmpty. Operand 1624 states and 2953 transitions. [2024-10-24 02:41:26,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-24 02:41:26,207 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:41:26,207 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] [2024-10-24 02:41:26,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 02:41:26,208 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:41:26,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:41:26,208 INFO L85 PathProgramCache]: Analyzing trace with hash -347393193, now seen corresponding path program 1 times [2024-10-24 02:41:26,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:41:26,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560547760] [2024-10-24 02:41:26,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:41:26,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:41:26,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:41:26,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:41:26,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:41:26,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560547760] [2024-10-24 02:41:26,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560547760] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:41:26,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:41:26,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 02:41:26,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904934972] [2024-10-24 02:41:26,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:41:26,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 02:41:26,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:41:26,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 02:41:26,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 02:41:26,352 INFO L87 Difference]: Start difference. First operand 1624 states and 2953 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 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) [2024-10-24 02:41:26,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:41:26,431 INFO L93 Difference]: Finished difference Result 1725 states and 3109 transitions. [2024-10-24 02:41:26,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 02:41:26,432 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 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 [2024-10-24 02:41:26,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:41:26,441 INFO L225 Difference]: With dead ends: 1725 [2024-10-24 02:41:26,441 INFO L226 Difference]: Without dead ends: 1626 [2024-10-24 02:41:26,442 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-10-24 02:41:26,443 INFO L432 NwaCegarLoop]: 1497 mSDtfsCounter, 2942 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2942 SdHoareTripleChecker+Valid, 1582 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:41:26,443 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2942 Valid, 1582 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:41:26,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1626 states. [2024-10-24 02:41:26,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1626 to 1624. [2024-10-24 02:41:26,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1624 states, 1622 states have (on average 1.8193588162762022) internal successors, (2951), 1623 states have internal predecessors, (2951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:26,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1624 states to 1624 states and 2951 transitions. [2024-10-24 02:41:26,489 INFO L78 Accepts]: Start accepts. Automaton has 1624 states and 2951 transitions. Word has length 34 [2024-10-24 02:41:26,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:41:26,489 INFO L471 AbstractCegarLoop]: Abstraction has 1624 states and 2951 transitions. [2024-10-24 02:41:26,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 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) [2024-10-24 02:41:26,490 INFO L276 IsEmpty]: Start isEmpty. Operand 1624 states and 2951 transitions. [2024-10-24 02:41:26,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-10-24 02:41:26,491 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:41:26,491 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:41:26,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 02:41:26,492 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:41:26,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:41:26,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1987358074, now seen corresponding path program 1 times [2024-10-24 02:41:26,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:41:26,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463890100] [2024-10-24 02:41:26,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:41:26,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:41:26,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:41:26,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:41:26,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:41:26,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463890100] [2024-10-24 02:41:26,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463890100] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:41:26,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:41:26,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 02:41:26,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023554280] [2024-10-24 02:41:26,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:41:26,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 02:41:26,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:41:26,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 02:41:26,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 02:41:26,605 INFO L87 Difference]: Start difference. First operand 1624 states and 2951 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:26,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:41:26,653 INFO L93 Difference]: Finished difference Result 1630 states and 2958 transitions. [2024-10-24 02:41:26,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 02:41:26,653 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-10-24 02:41:26,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:41:26,661 INFO L225 Difference]: With dead ends: 1630 [2024-10-24 02:41:26,661 INFO L226 Difference]: Without dead ends: 1628 [2024-10-24 02:41:26,662 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 [2024-10-24 02:41:26,662 INFO L432 NwaCegarLoop]: 1501 mSDtfsCounter, 0 mSDsluCounter, 2994 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4495 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:41:26,663 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4495 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:41:26,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1628 states. [2024-10-24 02:41:26,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1628 to 1628. [2024-10-24 02:41:26,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1628 states, 1626 states have (on average 1.8167281672816729) internal successors, (2954), 1627 states have internal predecessors, (2954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:26,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1628 states to 1628 states and 2954 transitions. [2024-10-24 02:41:26,708 INFO L78 Accepts]: Start accepts. Automaton has 1628 states and 2954 transitions. Word has length 35 [2024-10-24 02:41:26,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:41:26,709 INFO L471 AbstractCegarLoop]: Abstraction has 1628 states and 2954 transitions. [2024-10-24 02:41:26,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:26,710 INFO L276 IsEmpty]: Start isEmpty. Operand 1628 states and 2954 transitions. [2024-10-24 02:41:26,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-10-24 02:41:26,710 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:41:26,711 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] [2024-10-24 02:41:26,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 02:41:26,711 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:41:26,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:41:26,711 INFO L85 PathProgramCache]: Analyzing trace with hash 177157591, now seen corresponding path program 1 times [2024-10-24 02:41:26,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:41:26,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166924396] [2024-10-24 02:41:26,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:41:26,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:41:26,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:41:26,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:41:26,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:41:26,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166924396] [2024-10-24 02:41:26,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166924396] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:41:26,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:41:26,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:41:26,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127226281] [2024-10-24 02:41:26,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:41:26,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:41:26,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:41:26,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:41:26,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:41:26,764 INFO L87 Difference]: Start difference. First operand 1628 states and 2954 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:26,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:41:26,805 INFO L93 Difference]: Finished difference Result 1742 states and 3127 transitions. [2024-10-24 02:41:26,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:41:26,806 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2024-10-24 02:41:26,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:41:26,813 INFO L225 Difference]: With dead ends: 1742 [2024-10-24 02:41:26,813 INFO L226 Difference]: Without dead ends: 1682 [2024-10-24 02:41:26,814 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 [2024-10-24 02:41:26,815 INFO L432 NwaCegarLoop]: 1532 mSDtfsCounter, 1474 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1578 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 [2024-10-24 02:41:26,815 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1578 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:41:26,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1682 states. [2024-10-24 02:41:26,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1682 to 1680. [2024-10-24 02:41:26,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1680 states, 1678 states have (on average 1.8063170441001193) internal successors, (3031), 1679 states have internal predecessors, (3031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:26,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1680 states to 1680 states and 3031 transitions. [2024-10-24 02:41:26,855 INFO L78 Accepts]: Start accepts. Automaton has 1680 states and 3031 transitions. Word has length 36 [2024-10-24 02:41:26,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:41:26,855 INFO L471 AbstractCegarLoop]: Abstraction has 1680 states and 3031 transitions. [2024-10-24 02:41:26,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:26,856 INFO L276 IsEmpty]: Start isEmpty. Operand 1680 states and 3031 transitions. [2024-10-24 02:41:26,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-10-24 02:41:26,857 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:41:26,857 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] [2024-10-24 02:41:26,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 02:41:26,858 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:41:26,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:41:26,859 INFO L85 PathProgramCache]: Analyzing trace with hash -448498473, now seen corresponding path program 1 times [2024-10-24 02:41:26,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:41:26,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950024373] [2024-10-24 02:41:26,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:41:26,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:41:26,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:41:26,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:41:26,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:41:26,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950024373] [2024-10-24 02:41:26,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950024373] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:41:26,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:41:26,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:41:26,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469004493] [2024-10-24 02:41:26,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:41:26,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:41:26,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:41:26,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:41:26,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:41:26,912 INFO L87 Difference]: Start difference. First operand 1680 states and 3031 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:26,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:41:26,954 INFO L93 Difference]: Finished difference Result 1962 states and 3451 transitions. [2024-10-24 02:41:26,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:41:26,955 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2024-10-24 02:41:26,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:41:26,963 INFO L225 Difference]: With dead ends: 1962 [2024-10-24 02:41:26,963 INFO L226 Difference]: Without dead ends: 1809 [2024-10-24 02:41:26,964 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 [2024-10-24 02:41:26,967 INFO L432 NwaCegarLoop]: 1534 mSDtfsCounter, 1472 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 1584 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 [2024-10-24 02:41:26,967 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 1584 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:41:26,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1809 states. [2024-10-24 02:41:26,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1809 to 1807. [2024-10-24 02:41:27,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1807 states, 1805 states have (on average 1.7800554016620498) internal successors, (3213), 1806 states have internal predecessors, (3213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:27,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1807 states to 1807 states and 3213 transitions. [2024-10-24 02:41:27,008 INFO L78 Accepts]: Start accepts. Automaton has 1807 states and 3213 transitions. Word has length 36 [2024-10-24 02:41:27,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:41:27,008 INFO L471 AbstractCegarLoop]: Abstraction has 1807 states and 3213 transitions. [2024-10-24 02:41:27,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:27,009 INFO L276 IsEmpty]: Start isEmpty. Operand 1807 states and 3213 transitions. [2024-10-24 02:41:27,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-10-24 02:41:27,009 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:41:27,009 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] [2024-10-24 02:41:27,009 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 02:41:27,010 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:41:27,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:41:27,013 INFO L85 PathProgramCache]: Analyzing trace with hash 440234967, now seen corresponding path program 1 times [2024-10-24 02:41:27,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:41:27,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392907771] [2024-10-24 02:41:27,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:41:27,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:41:27,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:41:27,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:41:27,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:41:27,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392907771] [2024-10-24 02:41:27,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392907771] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:41:27,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:41:27,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:41:27,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290554108] [2024-10-24 02:41:27,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:41:27,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:41:27,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:41:27,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:41:27,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:41:27,056 INFO L87 Difference]: Start difference. First operand 1807 states and 3213 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:27,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:41:27,095 INFO L93 Difference]: Finished difference Result 2319 states and 3955 transitions. [2024-10-24 02:41:27,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:41:27,095 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2024-10-24 02:41:27,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:41:27,103 INFO L225 Difference]: With dead ends: 2319 [2024-10-24 02:41:27,103 INFO L226 Difference]: Without dead ends: 2039 [2024-10-24 02:41:27,105 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 [2024-10-24 02:41:27,106 INFO L432 NwaCegarLoop]: 1532 mSDtfsCounter, 1470 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1470 SdHoareTripleChecker+Valid, 1586 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 [2024-10-24 02:41:27,106 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1470 Valid, 1586 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:41:27,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2039 states. [2024-10-24 02:41:27,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2039 to 2037. [2024-10-24 02:41:27,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2037 states, 2035 states have (on average 1.7341523341523342) internal successors, (3529), 2036 states have internal predecessors, (3529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:27,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2037 states to 2037 states and 3529 transitions. [2024-10-24 02:41:27,155 INFO L78 Accepts]: Start accepts. Automaton has 2037 states and 3529 transitions. Word has length 36 [2024-10-24 02:41:27,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:41:27,156 INFO L471 AbstractCegarLoop]: Abstraction has 2037 states and 3529 transitions. [2024-10-24 02:41:27,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:27,156 INFO L276 IsEmpty]: Start isEmpty. Operand 2037 states and 3529 transitions. [2024-10-24 02:41:27,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-10-24 02:41:27,157 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:41:27,157 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:41:27,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 02:41:27,157 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:41:27,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:41:27,157 INFO L85 PathProgramCache]: Analyzing trace with hash -615837049, now seen corresponding path program 1 times [2024-10-24 02:41:27,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:41:27,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831795964] [2024-10-24 02:41:27,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:41:27,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:41:27,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:41:27,303 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 02:41:27,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:41:27,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831795964] [2024-10-24 02:41:27,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831795964] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:41:27,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:41:27,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 02:41:27,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897035893] [2024-10-24 02:41:27,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:41:27,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 02:41:27,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:41:27,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 02:41:27,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 02:41:27,305 INFO L87 Difference]: Start difference. First operand 2037 states and 3529 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:27,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:41:27,423 INFO L93 Difference]: Finished difference Result 3545 states and 5681 transitions. [2024-10-24 02:41:27,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 02:41:27,423 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-10-24 02:41:27,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:41:27,435 INFO L225 Difference]: With dead ends: 3545 [2024-10-24 02:41:27,435 INFO L226 Difference]: Without dead ends: 3175 [2024-10-24 02:41:27,436 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:41:27,437 INFO L432 NwaCegarLoop]: 1540 mSDtfsCounter, 3031 mSDsluCounter, 1613 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3031 SdHoareTripleChecker+Valid, 3153 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:41:27,437 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3031 Valid, 3153 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:41:27,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3175 states. [2024-10-24 02:41:27,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3175 to 2477. [2024-10-24 02:41:27,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2477 states, 2475 states have (on average 1.6763636363636363) internal successors, (4149), 2476 states have internal predecessors, (4149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:27,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2477 states to 2477 states and 4149 transitions. [2024-10-24 02:41:27,501 INFO L78 Accepts]: Start accepts. Automaton has 2477 states and 4149 transitions. Word has length 50 [2024-10-24 02:41:27,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:41:27,501 INFO L471 AbstractCegarLoop]: Abstraction has 2477 states and 4149 transitions. [2024-10-24 02:41:27,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:27,501 INFO L276 IsEmpty]: Start isEmpty. Operand 2477 states and 4149 transitions. [2024-10-24 02:41:27,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-10-24 02:41:27,502 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:41:27,503 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:41:27,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-24 02:41:27,503 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:41:27,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:41:27,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1241493113, now seen corresponding path program 1 times [2024-10-24 02:41:27,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:41:27,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798956430] [2024-10-24 02:41:27,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:41:27,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:41:27,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:41:27,631 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 02:41:27,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:41:27,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798956430] [2024-10-24 02:41:27,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798956430] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:41:27,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:41:27,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 02:41:27,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352097013] [2024-10-24 02:41:27,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:41:27,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 02:41:27,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:41:27,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 02:41:27,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 02:41:27,634 INFO L87 Difference]: Start difference. First operand 2477 states and 4149 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:27,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:41:27,758 INFO L93 Difference]: Finished difference Result 4053 states and 6401 transitions. [2024-10-24 02:41:27,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 02:41:27,759 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 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 50 [2024-10-24 02:41:27,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:41:27,774 INFO L225 Difference]: With dead ends: 4053 [2024-10-24 02:41:27,774 INFO L226 Difference]: Without dead ends: 3543 [2024-10-24 02:41:27,777 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:41:27,777 INFO L432 NwaCegarLoop]: 1539 mSDtfsCounter, 3033 mSDsluCounter, 1601 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3033 SdHoareTripleChecker+Valid, 3140 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 02:41:27,777 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3033 Valid, 3140 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 02:41:27,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3543 states. [2024-10-24 02:41:27,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3543 to 3169. [2024-10-24 02:41:27,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3169 states, 3167 states have (on average 1.6169876855067888) internal successors, (5121), 3168 states have internal predecessors, (5121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:27,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3169 states to 3169 states and 5121 transitions. [2024-10-24 02:41:27,858 INFO L78 Accepts]: Start accepts. Automaton has 3169 states and 5121 transitions. Word has length 50 [2024-10-24 02:41:27,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:41:27,858 INFO L471 AbstractCegarLoop]: Abstraction has 3169 states and 5121 transitions. [2024-10-24 02:41:27,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:27,859 INFO L276 IsEmpty]: Start isEmpty. Operand 3169 states and 5121 transitions. [2024-10-24 02:41:27,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-10-24 02:41:27,859 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:41:27,860 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:41:27,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-24 02:41:27,860 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:41:27,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:41:27,860 INFO L85 PathProgramCache]: Analyzing trace with hash -352759673, now seen corresponding path program 1 times [2024-10-24 02:41:27,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:41:27,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184336092] [2024-10-24 02:41:27,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:41:27,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:41:27,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:41:27,962 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-24 02:41:27,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:41:27,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184336092] [2024-10-24 02:41:27,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184336092] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:41:27,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:41:27,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 02:41:27,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274553456] [2024-10-24 02:41:27,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:41:27,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 02:41:27,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:41:27,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 02:41:27,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 02:41:27,964 INFO L87 Difference]: Start difference. First operand 3169 states and 5121 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:28,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:41:28,074 INFO L93 Difference]: Finished difference Result 4561 states and 7117 transitions. [2024-10-24 02:41:28,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 02:41:28,075 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 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 50 [2024-10-24 02:41:28,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:41:28,086 INFO L225 Difference]: With dead ends: 4561 [2024-10-24 02:41:28,086 INFO L226 Difference]: Without dead ends: 4051 [2024-10-24 02:41:28,088 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:41:28,089 INFO L432 NwaCegarLoop]: 1538 mSDtfsCounter, 3041 mSDsluCounter, 1596 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3041 SdHoareTripleChecker+Valid, 3134 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:41:28,089 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3041 Valid, 3134 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:41:28,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4051 states. [2024-10-24 02:41:28,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4051 to 3677. [2024-10-24 02:41:28,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3677 states, 3675 states have (on average 1.5882993197278912) internal successors, (5837), 3676 states have internal predecessors, (5837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:28,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3677 states to 3677 states and 5837 transitions. [2024-10-24 02:41:28,182 INFO L78 Accepts]: Start accepts. Automaton has 3677 states and 5837 transitions. Word has length 50 [2024-10-24 02:41:28,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:41:28,183 INFO L471 AbstractCegarLoop]: Abstraction has 3677 states and 5837 transitions. [2024-10-24 02:41:28,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:28,183 INFO L276 IsEmpty]: Start isEmpty. Operand 3677 states and 5837 transitions. [2024-10-24 02:41:28,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-10-24 02:41:28,184 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:41:28,184 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] [2024-10-24 02:41:28,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-24 02:41:28,184 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:41:28,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:41:28,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1472152007, now seen corresponding path program 1 times [2024-10-24 02:41:28,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:41:28,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668698492] [2024-10-24 02:41:28,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:41:28,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:41:28,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:41:28,276 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:41:28,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:41:28,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668698492] [2024-10-24 02:41:28,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668698492] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:41:28,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:41:28,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:41:28,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436721777] [2024-10-24 02:41:28,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:41:28,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:41:28,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:41:28,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:41:28,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:41:28,278 INFO L87 Difference]: Start difference. First operand 3677 states and 5837 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:28,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:41:28,345 INFO L93 Difference]: Finished difference Result 5829 states and 8875 transitions. [2024-10-24 02:41:28,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:41:28,346 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2024-10-24 02:41:28,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:41:28,354 INFO L225 Difference]: With dead ends: 5829 [2024-10-24 02:41:28,354 INFO L226 Difference]: Without dead ends: 3679 [2024-10-24 02:41:28,358 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 [2024-10-24 02:41:28,358 INFO L432 NwaCegarLoop]: 1520 mSDtfsCounter, 29 mSDsluCounter, 1491 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3011 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 [2024-10-24 02:41:28,358 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3011 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:41:28,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3679 states. [2024-10-24 02:41:28,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3679 to 3677. [2024-10-24 02:41:28,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3677 states, 3675 states have (on average 1.5746938775510204) internal successors, (5787), 3676 states have internal predecessors, (5787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:28,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3677 states to 3677 states and 5787 transitions. [2024-10-24 02:41:28,453 INFO L78 Accepts]: Start accepts. Automaton has 3677 states and 5787 transitions. Word has length 51 [2024-10-24 02:41:28,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:41:28,453 INFO L471 AbstractCegarLoop]: Abstraction has 3677 states and 5787 transitions. [2024-10-24 02:41:28,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:28,454 INFO L276 IsEmpty]: Start isEmpty. Operand 3677 states and 5787 transitions. [2024-10-24 02:41:28,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-10-24 02:41:28,455 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:41:28,455 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] [2024-10-24 02:41:28,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-24 02:41:28,455 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:41:28,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:41:28,456 INFO L85 PathProgramCache]: Analyzing trace with hash 805481295, now seen corresponding path program 1 times [2024-10-24 02:41:28,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:41:28,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024845096] [2024-10-24 02:41:28,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:41:28,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:41:28,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:41:28,542 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:41:28,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:41:28,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024845096] [2024-10-24 02:41:28,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024845096] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:41:28,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:41:28,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:41:28,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690376852] [2024-10-24 02:41:28,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:41:28,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:41:28,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:41:28,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:41:28,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:41:28,544 INFO L87 Difference]: Start difference. First operand 3677 states and 5787 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:28,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:41:28,591 INFO L93 Difference]: Finished difference Result 4523 states and 6974 transitions. [2024-10-24 02:41:28,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:41:28,591 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2024-10-24 02:41:28,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:41:28,596 INFO L225 Difference]: With dead ends: 4523 [2024-10-24 02:41:28,596 INFO L226 Difference]: Without dead ends: 2373 [2024-10-24 02:41:28,599 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 [2024-10-24 02:41:28,599 INFO L432 NwaCegarLoop]: 1518 mSDtfsCounter, 23 mSDsluCounter, 1490 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 3008 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 [2024-10-24 02:41:28,599 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 3008 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:41:28,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2373 states. [2024-10-24 02:41:28,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2373 to 2366. [2024-10-24 02:41:28,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2366 states, 2364 states have (on average 1.6759729272419628) internal successors, (3962), 2365 states have internal predecessors, (3962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:28,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2366 states to 2366 states and 3962 transitions. [2024-10-24 02:41:28,650 INFO L78 Accepts]: Start accepts. Automaton has 2366 states and 3962 transitions. Word has length 52 [2024-10-24 02:41:28,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:41:28,650 INFO L471 AbstractCegarLoop]: Abstraction has 2366 states and 3962 transitions. [2024-10-24 02:41:28,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:28,651 INFO L276 IsEmpty]: Start isEmpty. Operand 2366 states and 3962 transitions. [2024-10-24 02:41:28,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-10-24 02:41:28,651 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:41:28,652 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:41:28,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-24 02:41:28,652 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:41:28,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:41:28,653 INFO L85 PathProgramCache]: Analyzing trace with hash -441855801, now seen corresponding path program 1 times [2024-10-24 02:41:28,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:41:28,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030283709] [2024-10-24 02:41:28,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:41:28,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:41:28,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:41:28,766 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:41:28,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:41:28,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030283709] [2024-10-24 02:41:28,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030283709] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:41:28,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:41:28,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:41:28,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982838119] [2024-10-24 02:41:28,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:41:28,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:41:28,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:41:28,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:41:28,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:41:28,772 INFO L87 Difference]: Start difference. First operand 2366 states and 3962 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:28,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:41:28,814 INFO L93 Difference]: Finished difference Result 2784 states and 4540 transitions. [2024-10-24 02:41:28,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:41:28,815 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2024-10-24 02:41:28,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:41:28,819 INFO L225 Difference]: With dead ends: 2784 [2024-10-24 02:41:28,819 INFO L226 Difference]: Without dead ends: 1954 [2024-10-24 02:41:28,821 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 [2024-10-24 02:41:28,821 INFO L432 NwaCegarLoop]: 1512 mSDtfsCounter, 25 mSDsluCounter, 1475 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 2987 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 [2024-10-24 02:41:28,821 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 2987 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:41:28,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1954 states. [2024-10-24 02:41:28,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1954 to 1952. [2024-10-24 02:41:28,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1952 states, 1950 states have (on average 1.731794871794872) internal successors, (3377), 1951 states have internal predecessors, (3377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:28,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1952 states to 1952 states and 3377 transitions. [2024-10-24 02:41:28,855 INFO L78 Accepts]: Start accepts. Automaton has 1952 states and 3377 transitions. Word has length 53 [2024-10-24 02:41:28,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:41:28,855 INFO L471 AbstractCegarLoop]: Abstraction has 1952 states and 3377 transitions. [2024-10-24 02:41:28,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:28,855 INFO L276 IsEmpty]: Start isEmpty. Operand 1952 states and 3377 transitions. [2024-10-24 02:41:28,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-24 02:41:28,856 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:41:28,856 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:41:28,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-24 02:41:28,856 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:41:28,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:41:28,857 INFO L85 PathProgramCache]: Analyzing trace with hash -448750379, now seen corresponding path program 1 times [2024-10-24 02:41:28,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:41:28,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623571460] [2024-10-24 02:41:28,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:41:28,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:41:28,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:41:30,194 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:41:30,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:41:30,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623571460] [2024-10-24 02:41:30,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623571460] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:41:30,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584923000] [2024-10-24 02:41:30,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:41:30,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:41:30,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:41:30,197 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) [2024-10-24 02:41:30,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 02:41:30,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:41:30,344 INFO L255 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-24 02:41:30,350 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:41:30,849 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:41:30,850 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 02:41:31,705 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:41:31,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584923000] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 02:41:31,705 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 02:41:31,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2024-10-24 02:41:31,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832118616] [2024-10-24 02:41:31,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 02:41:31,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-24 02:41:31,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:41:31,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-24 02:41:31,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2024-10-24 02:41:31,708 INFO L87 Difference]: Start difference. First operand 1952 states and 3377 transitions. Second operand has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 27 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:34,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:41:34,460 INFO L93 Difference]: Finished difference Result 3510 states and 5497 transitions. [2024-10-24 02:41:34,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-10-24 02:41:34,461 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 27 states have internal predecessors, (142), 0 states have call successors, (0), 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 55 [2024-10-24 02:41:34,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:41:34,467 INFO L225 Difference]: With dead ends: 3510 [2024-10-24 02:41:34,467 INFO L226 Difference]: Without dead ends: 3094 [2024-10-24 02:41:34,469 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 805 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=813, Invalid=3093, Unknown=0, NotChecked=0, Total=3906 [2024-10-24 02:41:34,470 INFO L432 NwaCegarLoop]: 1477 mSDtfsCounter, 27389 mSDsluCounter, 6194 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27389 SdHoareTripleChecker+Valid, 7671 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-24 02:41:34,470 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27389 Valid, 7671 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-24 02:41:34,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3094 states. [2024-10-24 02:41:34,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3094 to 3041. [2024-10-24 02:41:34,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3041 states, 3039 states have (on average 1.5850608752879236) internal successors, (4817), 3040 states have internal predecessors, (4817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:34,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3041 states to 3041 states and 4817 transitions. [2024-10-24 02:41:34,540 INFO L78 Accepts]: Start accepts. Automaton has 3041 states and 4817 transitions. Word has length 55 [2024-10-24 02:41:34,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:41:34,541 INFO L471 AbstractCegarLoop]: Abstraction has 3041 states and 4817 transitions. [2024-10-24 02:41:34,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 27 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:34,541 INFO L276 IsEmpty]: Start isEmpty. Operand 3041 states and 4817 transitions. [2024-10-24 02:41:34,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-24 02:41:34,542 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:41:34,542 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:41:34,561 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 02:41:34,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-24 02:41:34,743 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:41:34,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:41:34,744 INFO L85 PathProgramCache]: Analyzing trace with hash -248115839, now seen corresponding path program 1 times [2024-10-24 02:41:34,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:41:34,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927018659] [2024-10-24 02:41:34,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:41:34,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:41:34,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:41:35,056 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:41:35,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:41:35,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927018659] [2024-10-24 02:41:35,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927018659] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:41:35,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355365984] [2024-10-24 02:41:35,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:41:35,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:41:35,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:41:35,059 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) [2024-10-24 02:41:35,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 02:41:35,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:41:35,154 INFO L255 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-24 02:41:35,156 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:41:35,482 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:41:35,482 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 02:41:36,143 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:41:36,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355365984] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 02:41:36,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 02:41:36,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2024-10-24 02:41:36,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118774538] [2024-10-24 02:41:36,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 02:41:36,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-24 02:41:36,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:41:36,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-24 02:41:36,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2024-10-24 02:41:36,146 INFO L87 Difference]: Start difference. First operand 3041 states and 4817 transitions. Second operand has 23 states, 23 states have (on average 5.260869565217392) internal successors, (121), 22 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:36,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:41:36,474 INFO L93 Difference]: Finished difference Result 5837 states and 8573 transitions. [2024-10-24 02:41:36,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-24 02:41:36,474 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.260869565217392) internal successors, (121), 22 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-10-24 02:41:36,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:41:36,482 INFO L225 Difference]: With dead ends: 5837 [2024-10-24 02:41:36,483 INFO L226 Difference]: Without dead ends: 4332 [2024-10-24 02:41:36,486 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=238, Invalid=692, Unknown=0, NotChecked=0, Total=930 [2024-10-24 02:41:36,487 INFO L432 NwaCegarLoop]: 1481 mSDtfsCounter, 10572 mSDsluCounter, 4626 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10572 SdHoareTripleChecker+Valid, 6107 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 02:41:36,487 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10572 Valid, 6107 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 02:41:36,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4332 states. [2024-10-24 02:41:36,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4332 to 4328. [2024-10-24 02:41:36,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4328 states, 4326 states have (on average 1.5108645399907537) internal successors, (6536), 4327 states have internal predecessors, (6536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:36,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4328 states to 4328 states and 6536 transitions. [2024-10-24 02:41:36,594 INFO L78 Accepts]: Start accepts. Automaton has 4328 states and 6536 transitions. Word has length 56 [2024-10-24 02:41:36,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:41:36,594 INFO L471 AbstractCegarLoop]: Abstraction has 4328 states and 6536 transitions. [2024-10-24 02:41:36,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.260869565217392) internal successors, (121), 22 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:36,594 INFO L276 IsEmpty]: Start isEmpty. Operand 4328 states and 6536 transitions. [2024-10-24 02:41:36,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-24 02:41:36,595 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:41:36,596 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:41:36,614 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-24 02:41:36,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-24 02:41:36,800 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:41:36,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:41:36,800 INFO L85 PathProgramCache]: Analyzing trace with hash -988630143, now seen corresponding path program 1 times [2024-10-24 02:41:36,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:41:36,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705971731] [2024-10-24 02:41:36,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:41:36,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:41:36,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:41:37,155 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:41:37,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:41:37,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705971731] [2024-10-24 02:41:37,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705971731] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:41:37,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180261530] [2024-10-24 02:41:37,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:41:37,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:41:37,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:41:37,157 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 02:41:37,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 02:41:37,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:41:37,243 INFO L255 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-24 02:41:37,244 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:41:37,530 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:41:37,531 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 02:41:37,932 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:41:37,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180261530] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 02:41:37,932 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 02:41:37,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2024-10-24 02:41:37,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509814481] [2024-10-24 02:41:37,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 02:41:37,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-24 02:41:37,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:41:37,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-24 02:41:37,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2024-10-24 02:41:37,934 INFO L87 Difference]: Start difference. First operand 4328 states and 6536 transitions. Second operand has 22 states, 22 states have (on average 5.7727272727272725) internal successors, (127), 21 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:38,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:41:38,420 INFO L93 Difference]: Finished difference Result 9446 states and 13388 transitions. [2024-10-24 02:41:38,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-24 02:41:38,421 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.7727272727272725) internal successors, (127), 21 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-10-24 02:41:38,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:41:38,433 INFO L225 Difference]: With dead ends: 9446 [2024-10-24 02:41:38,434 INFO L226 Difference]: Without dead ends: 6654 [2024-10-24 02:41:38,438 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=268, Invalid=788, Unknown=0, NotChecked=0, Total=1056 [2024-10-24 02:41:38,439 INFO L432 NwaCegarLoop]: 1488 mSDtfsCounter, 12012 mSDsluCounter, 4693 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12012 SdHoareTripleChecker+Valid, 6181 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 02:41:38,439 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12012 Valid, 6181 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 02:41:38,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6654 states. [2024-10-24 02:41:38,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6654 to 6182. [2024-10-24 02:41:38,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6182 states, 6180 states have (on average 1.4478964401294498) internal successors, (8948), 6181 states have internal predecessors, (8948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:38,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6182 states to 6182 states and 8948 transitions. [2024-10-24 02:41:38,601 INFO L78 Accepts]: Start accepts. Automaton has 6182 states and 8948 transitions. Word has length 56 [2024-10-24 02:41:38,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:41:38,601 INFO L471 AbstractCegarLoop]: Abstraction has 6182 states and 8948 transitions. [2024-10-24 02:41:38,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.7727272727272725) internal successors, (127), 21 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:38,601 INFO L276 IsEmpty]: Start isEmpty. Operand 6182 states and 8948 transitions. [2024-10-24 02:41:38,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-10-24 02:41:38,602 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:41:38,602 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:41:38,621 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-24 02:41:38,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:41:38,807 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:41:38,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:41:38,808 INFO L85 PathProgramCache]: Analyzing trace with hash 303878803, now seen corresponding path program 1 times [2024-10-24 02:41:38,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:41:38,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085992881] [2024-10-24 02:41:38,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:41:38,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:41:38,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:41:39,554 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:41:39,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:41:39,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085992881] [2024-10-24 02:41:39,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085992881] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:41:39,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110856159] [2024-10-24 02:41:39,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:41:39,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:41:39,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:41:39,557 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 02:41:39,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 02:41:39,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:41:39,655 INFO L255 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-24 02:41:39,657 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:41:40,283 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:41:40,283 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 02:41:40,962 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:41:40,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110856159] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 02:41:40,962 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 02:41:40,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 13] total 30 [2024-10-24 02:41:40,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625813628] [2024-10-24 02:41:40,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 02:41:40,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-10-24 02:41:40,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:41:40,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-10-24 02:41:40,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=756, Unknown=0, NotChecked=0, Total=870 [2024-10-24 02:41:40,964 INFO L87 Difference]: Start difference. First operand 6182 states and 8948 transitions. Second operand has 30 states, 30 states have (on average 4.133333333333334) internal successors, (124), 30 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:42,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:41:42,032 INFO L93 Difference]: Finished difference Result 9398 states and 13217 transitions. [2024-10-24 02:41:42,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-24 02:41:42,033 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.133333333333334) internal successors, (124), 30 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-10-24 02:41:42,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:41:42,047 INFO L225 Difference]: With dead ends: 9398 [2024-10-24 02:41:42,047 INFO L226 Difference]: Without dead ends: 7332 [2024-10-24 02:41:42,053 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=457, Invalid=1705, Unknown=0, NotChecked=0, Total=2162 [2024-10-24 02:41:42,053 INFO L432 NwaCegarLoop]: 1491 mSDtfsCounter, 11098 mSDsluCounter, 14875 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11098 SdHoareTripleChecker+Valid, 16366 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 02:41:42,054 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11098 Valid, 16366 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 552 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 02:41:42,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7332 states. [2024-10-24 02:41:42,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7332 to 5766. [2024-10-24 02:41:42,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5766 states, 5764 states have (on average 1.4512491325468424) internal successors, (8365), 5765 states have internal predecessors, (8365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:42,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5766 states to 5766 states and 8365 transitions. [2024-10-24 02:41:42,240 INFO L78 Accepts]: Start accepts. Automaton has 5766 states and 8365 transitions. Word has length 57 [2024-10-24 02:41:42,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:41:42,241 INFO L471 AbstractCegarLoop]: Abstraction has 5766 states and 8365 transitions. [2024-10-24 02:41:42,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 4.133333333333334) internal successors, (124), 30 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:42,241 INFO L276 IsEmpty]: Start isEmpty. Operand 5766 states and 8365 transitions. [2024-10-24 02:41:42,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-10-24 02:41:42,242 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:41:42,242 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:41:42,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-24 02:41:42,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:41:42,447 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:41:42,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:41:42,447 INFO L85 PathProgramCache]: Analyzing trace with hash -168351689, now seen corresponding path program 1 times [2024-10-24 02:41:42,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:41:42,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917256553] [2024-10-24 02:41:42,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:41:42,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:41:42,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:41:43,235 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:41:43,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:41:43,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917256553] [2024-10-24 02:41:43,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917256553] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:41:43,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780374550] [2024-10-24 02:41:43,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:41:43,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:41:43,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:41:43,238 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 02:41:43,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-24 02:41:43,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:41:43,349 INFO L255 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-10-24 02:41:43,353 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:41:44,691 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:41:44,692 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 02:41:46,586 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:41:46,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780374550] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 02:41:46,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 02:41:46,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 17, 16] total 38 [2024-10-24 02:41:46,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568006142] [2024-10-24 02:41:46,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 02:41:46,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-10-24 02:41:46,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:41:46,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-10-24 02:41:46,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=1236, Unknown=0, NotChecked=0, Total=1406 [2024-10-24 02:41:46,588 INFO L87 Difference]: Start difference. First operand 5766 states and 8365 transitions. Second operand has 38 states, 38 states have (on average 4.0) internal successors, (152), 38 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:57,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:41:57,259 INFO L93 Difference]: Finished difference Result 9386 states and 13109 transitions. [2024-10-24 02:41:57,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2024-10-24 02:41:57,259 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 4.0) internal successors, (152), 38 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-10-24 02:41:57,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:41:57,269 INFO L225 Difference]: With dead ends: 9386 [2024-10-24 02:41:57,270 INFO L226 Difference]: Without dead ends: 6264 [2024-10-24 02:41:57,276 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4094 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=2745, Invalid=10365, Unknown=0, NotChecked=0, Total=13110 [2024-10-24 02:41:57,277 INFO L432 NwaCegarLoop]: 1517 mSDtfsCounter, 18904 mSDsluCounter, 16951 mSDsCounter, 0 mSdLazyCounter, 1718 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18904 SdHoareTripleChecker+Valid, 18468 SdHoareTripleChecker+Invalid, 1780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-24 02:41:57,277 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18904 Valid, 18468 Invalid, 1780 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [62 Valid, 1718 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-24 02:41:57,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6264 states. [2024-10-24 02:41:57,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6264 to 5446. [2024-10-24 02:41:57,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5446 states, 5444 states have (on average 1.4588537839823659) internal successors, (7942), 5445 states have internal predecessors, (7942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:57,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5446 states to 5446 states and 7942 transitions. [2024-10-24 02:41:57,447 INFO L78 Accepts]: Start accepts. Automaton has 5446 states and 7942 transitions. Word has length 57 [2024-10-24 02:41:57,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:41:57,447 INFO L471 AbstractCegarLoop]: Abstraction has 5446 states and 7942 transitions. [2024-10-24 02:41:57,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 4.0) internal successors, (152), 38 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:57,447 INFO L276 IsEmpty]: Start isEmpty. Operand 5446 states and 7942 transitions. [2024-10-24 02:41:57,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-24 02:41:57,448 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:41:57,449 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:41:57,466 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-24 02:41:57,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:41:57,650 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:41:57,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:41:57,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1496708147, now seen corresponding path program 1 times [2024-10-24 02:41:57,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:41:57,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403658570] [2024-10-24 02:41:57,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:41:57,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:41:57,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:41:57,783 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 02:41:57,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:41:57,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403658570] [2024-10-24 02:41:57,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403658570] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:41:57,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823164818] [2024-10-24 02:41:57,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:41:57,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:41:57,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:41:57,786 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 02:41:57,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-24 02:41:57,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:41:57,887 INFO L255 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-24 02:41:57,889 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:41:57,962 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 02:41:57,962 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 02:41:58,140 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 02:41:58,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823164818] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 02:41:58,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 02:41:58,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 9 [2024-10-24 02:41:58,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842364950] [2024-10-24 02:41:58,141 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 02:41:58,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 02:41:58,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:41:58,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 02:41:58,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-10-24 02:41:58,143 INFO L87 Difference]: Start difference. First operand 5446 states and 7942 transitions. Second operand has 9 states, 9 states have (on average 17.444444444444443) internal successors, (157), 9 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:58,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:41:58,427 INFO L93 Difference]: Finished difference Result 11473 states and 15643 transitions. [2024-10-24 02:41:58,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 02:41:58,428 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.444444444444443) internal successors, (157), 9 states have internal predecessors, (157), 0 states have call successors, (0), 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 58 [2024-10-24 02:41:58,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:41:58,439 INFO L225 Difference]: With dead ends: 11473 [2024-10-24 02:41:58,440 INFO L226 Difference]: Without dead ends: 7563 [2024-10-24 02:41:58,445 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-10-24 02:41:58,446 INFO L432 NwaCegarLoop]: 1510 mSDtfsCounter, 2956 mSDsluCounter, 3123 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2956 SdHoareTripleChecker+Valid, 4633 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:41:58,446 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2956 Valid, 4633 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:41:58,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7563 states. [2024-10-24 02:41:58,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7563 to 7208. [2024-10-24 02:41:58,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7208 states, 7206 states have (on average 1.3726061615320566) internal successors, (9891), 7207 states have internal predecessors, (9891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:58,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7208 states to 7208 states and 9891 transitions. [2024-10-24 02:41:58,774 INFO L78 Accepts]: Start accepts. Automaton has 7208 states and 9891 transitions. Word has length 58 [2024-10-24 02:41:58,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:41:58,775 INFO L471 AbstractCegarLoop]: Abstraction has 7208 states and 9891 transitions. [2024-10-24 02:41:58,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.444444444444443) internal successors, (157), 9 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:58,775 INFO L276 IsEmpty]: Start isEmpty. Operand 7208 states and 9891 transitions. [2024-10-24 02:41:58,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-10-24 02:41:58,777 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:41:58,777 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2024-10-24 02:41:58,794 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-24 02:41:58,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:41:58,978 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:41:58,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:41:58,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1832193397, now seen corresponding path program 1 times [2024-10-24 02:41:58,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:41:58,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323966235] [2024-10-24 02:41:58,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:41:58,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:41:59,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:41:59,677 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 36 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:41:59,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:41:59,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323966235] [2024-10-24 02:41:59,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323966235] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:41:59,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363283422] [2024-10-24 02:41:59,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:41:59,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:41:59,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:41:59,679 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 02:41:59,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-24 02:41:59,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:41:59,781 INFO L255 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-24 02:41:59,783 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:42:00,240 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 30 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:42:00,240 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 02:42:01,663 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 28 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:42:01,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363283422] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 02:42:01,664 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 02:42:01,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 33 [2024-10-24 02:42:01,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48194806] [2024-10-24 02:42:01,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 02:42:01,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-10-24 02:42:01,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:42:01,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-10-24 02:42:01,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=993, Unknown=0, NotChecked=0, Total=1122 [2024-10-24 02:42:01,666 INFO L87 Difference]: Start difference. First operand 7208 states and 9891 transitions. Second operand has 34 states, 34 states have (on average 7.382352941176471) internal successors, (251), 33 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:42:04,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:42:04,281 INFO L93 Difference]: Finished difference Result 11392 states and 15156 transitions. [2024-10-24 02:42:04,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-10-24 02:42:04,281 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 7.382352941176471) internal successors, (251), 33 states have internal predecessors, (251), 0 states have call successors, (0), 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 93 [2024-10-24 02:42:04,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:42:04,289 INFO L225 Difference]: With dead ends: 11392 [2024-10-24 02:42:04,289 INFO L226 Difference]: Without dead ends: 7288 [2024-10-24 02:42:04,296 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1213 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1244, Invalid=4918, Unknown=0, NotChecked=0, Total=6162 [2024-10-24 02:42:04,297 INFO L432 NwaCegarLoop]: 1491 mSDtfsCounter, 21226 mSDsluCounter, 15214 mSDsCounter, 0 mSdLazyCounter, 1095 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21226 SdHoareTripleChecker+Valid, 16705 SdHoareTripleChecker+Invalid, 1136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-24 02:42:04,297 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21226 Valid, 16705 Invalid, 1136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1095 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-24 02:42:04,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7288 states. [2024-10-24 02:42:04,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7288 to 4178. [2024-10-24 02:42:04,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4178 states, 4176 states have (on average 1.4451628352490422) internal successors, (6035), 4177 states have internal predecessors, (6035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:42:04,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4178 states to 4178 states and 6035 transitions. [2024-10-24 02:42:04,514 INFO L78 Accepts]: Start accepts. Automaton has 4178 states and 6035 transitions. Word has length 93 [2024-10-24 02:42:04,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:42:04,514 INFO L471 AbstractCegarLoop]: Abstraction has 4178 states and 6035 transitions. [2024-10-24 02:42:04,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 7.382352941176471) internal successors, (251), 33 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:42:04,514 INFO L276 IsEmpty]: Start isEmpty. Operand 4178 states and 6035 transitions. [2024-10-24 02:42:04,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-10-24 02:42:04,516 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:42:04,516 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:42:04,534 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-24 02:42:04,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:42:04,717 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:42:04,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:42:04,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1051720921, now seen corresponding path program 1 times [2024-10-24 02:42:04,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:42:04,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946655721] [2024-10-24 02:42:04,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:42:04,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:42:04,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:42:06,131 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 21 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:42:06,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:42:06,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946655721] [2024-10-24 02:42:06,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946655721] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:42:06,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189953340] [2024-10-24 02:42:06,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:42:06,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:42:06,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:42:06,135 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 02:42:06,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-24 02:42:06,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:42:06,255 INFO L255 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-10-24 02:42:06,258 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:42:08,424 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 21 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:42:08,424 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 02:42:13,075 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 21 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:42:13,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1189953340] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 02:42:13,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 02:42:13,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 21] total 60 [2024-10-24 02:42:13,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237900250] [2024-10-24 02:42:13,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 02:42:13,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-10-24 02:42:13,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:42:13,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-10-24 02:42:13,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=3272, Unknown=0, NotChecked=0, Total=3540 [2024-10-24 02:42:13,079 INFO L87 Difference]: Start difference. First operand 4178 states and 6035 transitions. Second operand has 60 states, 60 states have (on average 4.283333333333333) internal successors, (257), 60 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)