./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.5.1.ufo.UNBOUNDED.pals+Problem12_label02.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.5.1.ufo.UNBOUNDED.pals+Problem12_label02.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f64db8798478892c7952ed2e39de053718a88a4933b23364a7fdbf37373a3455 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 02:47:12,774 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 02:47:12,855 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 02:47:12,858 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 02:47:12,859 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 02:47:12,877 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 02:47:12,877 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 02:47:12,878 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 02:47:12,878 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 02:47:12,879 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 02:47:12,879 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 02:47:12,880 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 02:47:12,880 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 02:47:12,880 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 02:47:12,881 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 02:47:12,882 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 02:47:12,882 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 02:47:12,883 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 02:47:12,883 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 02:47:12,883 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 02:47:12,883 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 02:47:12,886 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 02:47:12,886 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 02:47:12,886 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 02:47:12,887 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 02:47:12,887 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 02:47:12,887 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 02:47:12,887 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 02:47:12,887 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 02:47:12,888 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 02:47:12,888 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 02:47:12,888 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 02:47:12,888 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 02:47:12,888 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 02:47:12,888 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 02:47:12,889 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 02:47:12,889 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 02:47:12,889 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 02:47:12,889 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 02:47:12,889 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 02:47:12,889 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 02:47:12,890 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 02:47:12,890 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f64db8798478892c7952ed2e39de053718a88a4933b23364a7fdbf37373a3455 [2024-10-24 02:47:13,104 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 02:47:13,149 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 02:47:13,151 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 02:47:13,154 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 02:47:13,155 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 02:47:13,157 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.5.1.ufo.UNBOUNDED.pals+Problem12_label02.c [2024-10-24 02:47:14,625 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 02:47:15,031 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 02:47:15,033 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.5.1.ufo.UNBOUNDED.pals+Problem12_label02.c [2024-10-24 02:47:15,058 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ef606e48/3d1b3ae4f3b640b9886f1dd5c8d4303a/FLAGfd255f622 [2024-10-24 02:47:15,072 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ef606e48/3d1b3ae4f3b640b9886f1dd5c8d4303a [2024-10-24 02:47:15,074 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 02:47:15,076 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 02:47:15,077 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 02:47:15,078 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 02:47:15,082 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 02:47:15,082 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:47:15" (1/1) ... [2024-10-24 02:47:15,084 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e44ae0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:47:15, skipping insertion in model container [2024-10-24 02:47:15,084 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:47:15" (1/1) ... [2024-10-24 02:47:15,174 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 02:47:15,505 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.5.1.ufo.UNBOUNDED.pals+Problem12_label02.c[11705,11718] [2024-10-24 02:47:15,559 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.5.1.ufo.UNBOUNDED.pals+Problem12_label02.c[18995,19008] [2024-10-24 02:47:16,227 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 02:47:16,247 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 02:47:16,273 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.5.1.ufo.UNBOUNDED.pals+Problem12_label02.c[11705,11718] [2024-10-24 02:47:16,281 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.5.1.ufo.UNBOUNDED.pals+Problem12_label02.c[18995,19008] [2024-10-24 02:47:16,506 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 02:47:16,532 INFO L204 MainTranslator]: Completed translation [2024-10-24 02:47:16,533 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:47:16 WrapperNode [2024-10-24 02:47:16,534 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 02:47:16,534 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 02:47:16,534 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 02:47:16,535 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 02:47:16,540 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:47:16" (1/1) ... [2024-10-24 02:47:16,614 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:47:16" (1/1) ... [2024-10-24 02:47:16,798 INFO L138 Inliner]: procedures = 37, calls = 22, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 5098 [2024-10-24 02:47:16,799 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 02:47:16,800 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 02:47:16,800 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 02:47:16,800 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 02:47:16,809 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:47:16" (1/1) ... [2024-10-24 02:47:16,809 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:47:16" (1/1) ... [2024-10-24 02:47:16,920 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:47:16" (1/1) ... [2024-10-24 02:47:17,097 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 02:47:17,098 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:47:16" (1/1) ... [2024-10-24 02:47:17,098 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:47:16" (1/1) ... [2024-10-24 02:47:17,257 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:47:16" (1/1) ... [2024-10-24 02:47:17,282 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:47:16" (1/1) ... [2024-10-24 02:47:17,323 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:47:16" (1/1) ... [2024-10-24 02:47:17,348 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:47:16" (1/1) ... [2024-10-24 02:47:17,440 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 02:47:17,440 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 02:47:17,440 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 02:47:17,441 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 02:47:17,441 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:47:16" (1/1) ... [2024-10-24 02:47:17,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 02:47:17,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:47:17,473 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 02:47:17,478 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 02:47:17,512 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 02:47:17,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 02:47:17,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 02:47:17,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 02:47:17,621 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 02:47:17,622 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 02:47:21,063 INFO L? ?]: Removed 744 outVars from TransFormulas that were not future-live. [2024-10-24 02:47:21,063 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 02:47:21,105 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 02:47:21,105 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-24 02:47:21,105 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:47:21 BoogieIcfgContainer [2024-10-24 02:47:21,106 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 02:47:21,107 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 02:47:21,107 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 02:47:21,109 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 02:47:21,110 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:47:15" (1/3) ... [2024-10-24 02:47:21,110 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f03c2d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:47:21, skipping insertion in model container [2024-10-24 02:47:21,110 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:47:16" (2/3) ... [2024-10-24 02:47:21,110 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f03c2d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:47:21, skipping insertion in model container [2024-10-24 02:47:21,110 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:47:21" (3/3) ... [2024-10-24 02:47:21,111 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.UNBOUNDED.pals+Problem12_label02.c [2024-10-24 02:47:21,122 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 02:47:21,123 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-24 02:47:21,179 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 02:47:21,183 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;@2285054f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 02:47:21,184 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-24 02:47:21,190 INFO L276 IsEmpty]: Start isEmpty. Operand has 836 states, 833 states have (on average 1.9747899159663866) internal successors, (1645), 835 states have internal predecessors, (1645), 0 states have call successors, (0), 0 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 02:47:21,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-10-24 02:47:21,195 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:47:21,196 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] [2024-10-24 02:47:21,196 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:47:21,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:47:21,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1695125417, now seen corresponding path program 1 times [2024-10-24 02:47:21,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:47:21,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640370298] [2024-10-24 02:47:21,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:47:21,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:47:21,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:47:21,364 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 02:47:21,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:47:21,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640370298] [2024-10-24 02:47:21,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640370298] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:47:21,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:47:21,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 02:47:21,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599045252] [2024-10-24 02:47:21,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:47:21,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-24 02:47:21,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:47:21,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-24 02:47:21,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 02:47:21,407 INFO L87 Difference]: Start difference. First operand has 836 states, 833 states have (on average 1.9747899159663866) internal successors, (1645), 835 states have internal predecessors, (1645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 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 02:47:21,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:47:21,493 INFO L93 Difference]: Finished difference Result 1636 states and 3221 transitions. [2024-10-24 02:47:21,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-24 02:47:21,495 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2024-10-24 02:47:21,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:47:21,506 INFO L225 Difference]: With dead ends: 1636 [2024-10-24 02:47:21,507 INFO L226 Difference]: Without dead ends: 832 [2024-10-24 02:47:21,511 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 02:47:21,513 INFO L432 NwaCegarLoop]: 1573 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1573 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:47:21,514 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1573 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:47:21,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2024-10-24 02:47:21,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 832. [2024-10-24 02:47:21,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 832 states, 830 states have (on average 1.8963855421686746) internal successors, (1574), 831 states have internal predecessors, (1574), 0 states have call successors, (0), 0 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 02:47:21,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 1574 transitions. [2024-10-24 02:47:21,576 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 1574 transitions. Word has length 21 [2024-10-24 02:47:21,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:47:21,577 INFO L471 AbstractCegarLoop]: Abstraction has 832 states and 1574 transitions. [2024-10-24 02:47:21,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 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 02:47:21,577 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 1574 transitions. [2024-10-24 02:47:21,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-10-24 02:47:21,578 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:47:21,578 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] [2024-10-24 02:47:21,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 02:47:21,578 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:47:21,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:47:21,579 INFO L85 PathProgramCache]: Analyzing trace with hash 106777515, now seen corresponding path program 1 times [2024-10-24 02:47:21,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:47:21,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133043947] [2024-10-24 02:47:21,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:47:21,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:47:21,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:47:21,760 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 02:47:21,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:47:21,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133043947] [2024-10-24 02:47:21,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133043947] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:47:21,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:47:21,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 02:47:21,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101399438] [2024-10-24 02:47:21,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:47:21,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 02:47:21,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:47:21,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 02:47:21,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 02:47:21,764 INFO L87 Difference]: Start difference. First operand 832 states and 1574 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 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 02:47:21,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:47:21,852 INFO L93 Difference]: Finished difference Result 878 states and 1646 transitions. [2024-10-24 02:47:21,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 02:47:21,853 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2024-10-24 02:47:21,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:47:21,858 INFO L225 Difference]: With dead ends: 878 [2024-10-24 02:47:21,858 INFO L226 Difference]: Without dead ends: 832 [2024-10-24 02:47:21,858 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 02:47:21,859 INFO L432 NwaCegarLoop]: 1571 mSDtfsCounter, 0 mSDsluCounter, 3107 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4678 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 02:47:21,860 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4678 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 02:47:21,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2024-10-24 02:47:21,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 832. [2024-10-24 02:47:21,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 832 states, 830 states have (on average 1.8590361445783132) internal successors, (1543), 831 states have internal predecessors, (1543), 0 states have call successors, (0), 0 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 02:47:21,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 1543 transitions. [2024-10-24 02:47:21,873 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 1543 transitions. Word has length 21 [2024-10-24 02:47:21,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:47:21,873 INFO L471 AbstractCegarLoop]: Abstraction has 832 states and 1543 transitions. [2024-10-24 02:47:21,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 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 02:47:21,874 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 1543 transitions. [2024-10-24 02:47:21,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-10-24 02:47:21,875 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:47:21,876 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:47:21,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 02:47:21,876 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:47:21,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:47:21,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1212971778, now seen corresponding path program 1 times [2024-10-24 02:47:21,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:47:21,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938426968] [2024-10-24 02:47:21,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:47:21,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:47:21,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:47:22,067 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 02:47:22,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:47:22,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938426968] [2024-10-24 02:47:22,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938426968] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:47:22,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:47:22,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 02:47:22,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310803843] [2024-10-24 02:47:22,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:47:22,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 02:47:22,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:47:22,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 02:47:22,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:47:22,070 INFO L87 Difference]: Start difference. First operand 832 states and 1543 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 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 02:47:22,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:47:22,518 INFO L93 Difference]: Finished difference Result 1262 states and 2233 transitions. [2024-10-24 02:47:22,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-24 02:47:22,519 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 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 02:47:22,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:47:22,524 INFO L225 Difference]: With dead ends: 1262 [2024-10-24 02:47:22,524 INFO L226 Difference]: Without dead ends: 1219 [2024-10-24 02:47:22,525 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2024-10-24 02:47:22,525 INFO L432 NwaCegarLoop]: 1534 mSDtfsCounter, 7959 mSDsluCounter, 1120 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7959 SdHoareTripleChecker+Valid, 2654 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 02:47:22,526 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7959 Valid, 2654 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 02:47:22,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2024-10-24 02:47:22,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 873. [2024-10-24 02:47:22,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 871 states have (on average 1.8473019517795637) internal successors, (1609), 872 states have internal predecessors, (1609), 0 states have call successors, (0), 0 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 02:47:22,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1609 transitions. [2024-10-24 02:47:22,543 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1609 transitions. Word has length 51 [2024-10-24 02:47:22,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:47:22,543 INFO L471 AbstractCegarLoop]: Abstraction has 873 states and 1609 transitions. [2024-10-24 02:47:22,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 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 02:47:22,544 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1609 transitions. [2024-10-24 02:47:22,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-10-24 02:47:22,546 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:47:22,546 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:47:22,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 02:47:22,546 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:47:22,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:47:22,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1583069298, now seen corresponding path program 1 times [2024-10-24 02:47:22,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:47:22,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578367770] [2024-10-24 02:47:22,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:47:22,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:47:22,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:47:22,622 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 02:47:22,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:47:22,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578367770] [2024-10-24 02:47:22,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578367770] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:47:22,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:47:22,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:47:22,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132179729] [2024-10-24 02:47:22,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:47:22,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:47:22,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:47:22,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:47:22,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:47:22,625 INFO L87 Difference]: Start difference. First operand 873 states and 1609 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 02:47:22,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:47:22,660 INFO L93 Difference]: Finished difference Result 1030 states and 1860 transitions. [2024-10-24 02:47:22,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:47:22,661 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 02:47:22,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:47:22,664 INFO L225 Difference]: With dead ends: 1030 [2024-10-24 02:47:22,665 INFO L226 Difference]: Without dead ends: 946 [2024-10-24 02:47:22,665 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 02:47:22,666 INFO L432 NwaCegarLoop]: 1536 mSDtfsCounter, 1482 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 1597 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:47:22,666 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 1597 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:47:22,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2024-10-24 02:47:22,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 942. [2024-10-24 02:47:22,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 940 states have (on average 1.8265957446808512) internal successors, (1717), 941 states have internal predecessors, (1717), 0 states have call successors, (0), 0 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 02:47:22,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 1717 transitions. [2024-10-24 02:47:22,682 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 1717 transitions. Word has length 53 [2024-10-24 02:47:22,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:47:22,683 INFO L471 AbstractCegarLoop]: Abstraction has 942 states and 1717 transitions. [2024-10-24 02:47:22,683 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 02:47:22,683 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 1717 transitions. [2024-10-24 02:47:22,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-10-24 02:47:22,684 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:47:22,684 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:47:22,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 02:47:22,685 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:47:22,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:47:22,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1585214250, now seen corresponding path program 1 times [2024-10-24 02:47:22,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:47:22,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740712529] [2024-10-24 02:47:22,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:47:22,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:47:22,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:47:22,900 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 02:47:22,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:47:22,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740712529] [2024-10-24 02:47:22,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740712529] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:47:22,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:47:22,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 02:47:22,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77539465] [2024-10-24 02:47:22,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:47:22,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 02:47:22,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:47:22,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 02:47:22,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:47:22,902 INFO L87 Difference]: Start difference. First operand 942 states and 1717 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 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 02:47:23,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:47:23,048 INFO L93 Difference]: Finished difference Result 1097 states and 1961 transitions. [2024-10-24 02:47:23,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 02:47:23,048 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 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 02:47:23,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:47:23,051 INFO L225 Difference]: With dead ends: 1097 [2024-10-24 02:47:23,051 INFO L226 Difference]: Without dead ends: 944 [2024-10-24 02:47:23,052 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2024-10-24 02:47:23,053 INFO L432 NwaCegarLoop]: 1533 mSDtfsCounter, 2996 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2996 SdHoareTripleChecker+Valid, 1799 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:47:23,053 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2996 Valid, 1799 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:47:23,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 944 states. [2024-10-24 02:47:23,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 944 to 942. [2024-10-24 02:47:23,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 940 states have (on average 1.824468085106383) internal successors, (1715), 941 states have internal predecessors, (1715), 0 states have call successors, (0), 0 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 02:47:23,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 1715 transitions. [2024-10-24 02:47:23,065 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 1715 transitions. Word has length 53 [2024-10-24 02:47:23,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:47:23,066 INFO L471 AbstractCegarLoop]: Abstraction has 942 states and 1715 transitions. [2024-10-24 02:47:23,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 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 02:47:23,066 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 1715 transitions. [2024-10-24 02:47:23,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-10-24 02:47:23,067 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:47:23,067 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:47:23,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 02:47:23,067 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:47:23,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:47:23,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1767897232, now seen corresponding path program 1 times [2024-10-24 02:47:23,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:47:23,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071380815] [2024-10-24 02:47:23,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:47:23,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:47:23,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:47:23,164 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 02:47:23,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:47:23,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071380815] [2024-10-24 02:47:23,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071380815] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:47:23,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:47:23,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 02:47:23,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412453952] [2024-10-24 02:47:23,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:47:23,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 02:47:23,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:47:23,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 02:47:23,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 02:47:23,166 INFO L87 Difference]: Start difference. First operand 942 states and 1715 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 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 02:47:23,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:47:23,196 INFO L93 Difference]: Finished difference Result 948 states and 1722 transitions. [2024-10-24 02:47:23,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 02:47:23,197 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-10-24 02:47:23,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:47:23,200 INFO L225 Difference]: With dead ends: 948 [2024-10-24 02:47:23,201 INFO L226 Difference]: Without dead ends: 946 [2024-10-24 02:47:23,203 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 02:47:23,204 INFO L432 NwaCegarLoop]: 1539 mSDtfsCounter, 0 mSDsluCounter, 3070 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4609 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 02:47:23,204 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4609 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:47:23,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2024-10-24 02:47:23,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 946. [2024-10-24 02:47:23,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 946 states, 944 states have (on average 1.819915254237288) internal successors, (1718), 945 states have internal predecessors, (1718), 0 states have call successors, (0), 0 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 02:47:23,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946 states to 946 states and 1718 transitions. [2024-10-24 02:47:23,228 INFO L78 Accepts]: Start accepts. Automaton has 946 states and 1718 transitions. Word has length 54 [2024-10-24 02:47:23,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:47:23,229 INFO L471 AbstractCegarLoop]: Abstraction has 946 states and 1718 transitions. [2024-10-24 02:47:23,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 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 02:47:23,229 INFO L276 IsEmpty]: Start isEmpty. Operand 946 states and 1718 transitions. [2024-10-24 02:47:23,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-24 02:47:23,231 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:47:23,231 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:47:23,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 02:47:23,231 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:47:23,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:47:23,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1923112714, now seen corresponding path program 1 times [2024-10-24 02:47:23,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:47:23,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811608601] [2024-10-24 02:47:23,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:47:23,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:47:23,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:47:23,295 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 02:47:23,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:47:23,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811608601] [2024-10-24 02:47:23,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811608601] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:47:23,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:47:23,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:47:23,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253921093] [2024-10-24 02:47:23,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:47:23,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:47:23,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:47:23,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:47:23,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:47:23,299 INFO L87 Difference]: Start difference. First operand 946 states and 1718 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:23,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:47:23,331 INFO L93 Difference]: Finished difference Result 1244 states and 2178 transitions. [2024-10-24 02:47:23,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:47:23,331 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-10-24 02:47:23,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:47:23,336 INFO L225 Difference]: With dead ends: 1244 [2024-10-24 02:47:23,336 INFO L226 Difference]: Without dead ends: 1087 [2024-10-24 02:47:23,337 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 02:47:23,338 INFO L432 NwaCegarLoop]: 1585 mSDtfsCounter, 1495 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1495 SdHoareTripleChecker+Valid, 1658 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 02:47:23,338 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1495 Valid, 1658 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:47:23,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1087 states. [2024-10-24 02:47:23,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1087 to 1085. [2024-10-24 02:47:23,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1085 states, 1083 states have (on average 1.7811634349030472) internal successors, (1929), 1084 states have internal predecessors, (1929), 0 states have call successors, (0), 0 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 02:47:23,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1085 states to 1085 states and 1929 transitions. [2024-10-24 02:47:23,359 INFO L78 Accepts]: Start accepts. Automaton has 1085 states and 1929 transitions. Word has length 55 [2024-10-24 02:47:23,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:47:23,360 INFO L471 AbstractCegarLoop]: Abstraction has 1085 states and 1929 transitions. [2024-10-24 02:47:23,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:23,360 INFO L276 IsEmpty]: Start isEmpty. Operand 1085 states and 1929 transitions. [2024-10-24 02:47:23,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-24 02:47:23,361 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:47:23,361 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:47:23,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 02:47:23,361 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:47:23,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:47:23,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1963056650, now seen corresponding path program 1 times [2024-10-24 02:47:23,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:47:23,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087761415] [2024-10-24 02:47:23,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:47:23,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:47:23,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:47:23,417 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 02:47:23,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:47:23,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087761415] [2024-10-24 02:47:23,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087761415] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:47:23,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:47:23,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:47:23,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629070666] [2024-10-24 02:47:23,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:47:23,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:47:23,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:47:23,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:47:23,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:47:23,419 INFO L87 Difference]: Start difference. First operand 1085 states and 1929 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:23,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:47:23,446 INFO L93 Difference]: Finished difference Result 1645 states and 2783 transitions. [2024-10-24 02:47:23,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:47:23,446 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-10-24 02:47:23,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:47:23,450 INFO L225 Difference]: With dead ends: 1645 [2024-10-24 02:47:23,450 INFO L226 Difference]: Without dead ends: 1349 [2024-10-24 02:47:23,451 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 02:47:23,452 INFO L432 NwaCegarLoop]: 1583 mSDtfsCounter, 1493 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1493 SdHoareTripleChecker+Valid, 1660 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 02:47:23,452 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1493 Valid, 1660 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:47:23,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1349 states. [2024-10-24 02:47:23,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1349 to 1347. [2024-10-24 02:47:23,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1347 states, 1345 states have (on average 1.7241635687732342) internal successors, (2319), 1346 states have internal predecessors, (2319), 0 states have call successors, (0), 0 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 02:47:23,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1347 states to 1347 states and 2319 transitions. [2024-10-24 02:47:23,477 INFO L78 Accepts]: Start accepts. Automaton has 1347 states and 2319 transitions. Word has length 55 [2024-10-24 02:47:23,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:47:23,477 INFO L471 AbstractCegarLoop]: Abstraction has 1347 states and 2319 transitions. [2024-10-24 02:47:23,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:23,478 INFO L276 IsEmpty]: Start isEmpty. Operand 1347 states and 2319 transitions. [2024-10-24 02:47:23,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-24 02:47:23,479 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:47:23,479 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:47:23,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 02:47:23,479 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:47:23,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:47:23,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1337400586, now seen corresponding path program 1 times [2024-10-24 02:47:23,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:47:23,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324721731] [2024-10-24 02:47:23,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:47:23,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:47:23,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:47:23,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:47:23,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:47:23,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324721731] [2024-10-24 02:47:23,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324721731] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:47:23,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:47:23,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:47:23,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915888224] [2024-10-24 02:47:23,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:47:23,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:47:23,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:47:23,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:47:23,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:47:23,528 INFO L87 Difference]: Start difference. First operand 1347 states and 2319 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:23,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:47:23,564 INFO L93 Difference]: Finished difference Result 2399 states and 3897 transitions. [2024-10-24 02:47:23,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:47:23,565 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-10-24 02:47:23,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:47:23,570 INFO L225 Difference]: With dead ends: 2399 [2024-10-24 02:47:23,570 INFO L226 Difference]: Without dead ends: 1841 [2024-10-24 02:47:23,571 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 02:47:23,571 INFO L432 NwaCegarLoop]: 1581 mSDtfsCounter, 1491 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1491 SdHoareTripleChecker+Valid, 1662 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 02:47:23,571 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1491 Valid, 1662 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:47:23,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1841 states. [2024-10-24 02:47:23,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1841 to 1839. [2024-10-24 02:47:23,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1839 states, 1837 states have (on average 1.6521502449646162) internal successors, (3035), 1838 states have internal predecessors, (3035), 0 states have call successors, (0), 0 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 02:47:23,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1839 states to 1839 states and 3035 transitions. [2024-10-24 02:47:23,664 INFO L78 Accepts]: Start accepts. Automaton has 1839 states and 3035 transitions. Word has length 55 [2024-10-24 02:47:23,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:47:23,664 INFO L471 AbstractCegarLoop]: Abstraction has 1839 states and 3035 transitions. [2024-10-24 02:47:23,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:23,665 INFO L276 IsEmpty]: Start isEmpty. Operand 1839 states and 3035 transitions. [2024-10-24 02:47:23,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-24 02:47:23,665 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:47:23,665 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:47:23,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 02:47:23,666 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:47:23,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:47:23,667 INFO L85 PathProgramCache]: Analyzing trace with hash -2068833270, now seen corresponding path program 1 times [2024-10-24 02:47:23,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:47:23,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884277048] [2024-10-24 02:47:23,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:47:23,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:47:23,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:47:23,718 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 02:47:23,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:47:23,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884277048] [2024-10-24 02:47:23,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884277048] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:47:23,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:47:23,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:47:23,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206944519] [2024-10-24 02:47:23,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:47:23,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:47:23,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:47:23,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:47:23,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:47:23,723 INFO L87 Difference]: Start difference. First operand 1839 states and 3035 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:23,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:47:23,775 INFO L93 Difference]: Finished difference Result 3811 states and 5933 transitions. [2024-10-24 02:47:23,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:47:23,776 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-10-24 02:47:23,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:47:23,784 INFO L225 Difference]: With dead ends: 3811 [2024-10-24 02:47:23,784 INFO L226 Difference]: Without dead ends: 2761 [2024-10-24 02:47:23,787 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 02:47:23,788 INFO L432 NwaCegarLoop]: 1579 mSDtfsCounter, 1489 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1489 SdHoareTripleChecker+Valid, 1664 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 02:47:23,788 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1489 Valid, 1664 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:47:23,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2761 states. [2024-10-24 02:47:23,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2761 to 2759. [2024-10-24 02:47:23,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2759 states, 2757 states have (on average 1.5738121146173376) internal successors, (4339), 2758 states have internal predecessors, (4339), 0 states have call successors, (0), 0 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 02:47:23,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2759 states to 2759 states and 4339 transitions. [2024-10-24 02:47:23,857 INFO L78 Accepts]: Start accepts. Automaton has 2759 states and 4339 transitions. Word has length 55 [2024-10-24 02:47:23,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:47:23,857 INFO L471 AbstractCegarLoop]: Abstraction has 2759 states and 4339 transitions. [2024-10-24 02:47:23,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:23,857 INFO L276 IsEmpty]: Start isEmpty. Operand 2759 states and 4339 transitions. [2024-10-24 02:47:23,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-10-24 02:47:23,858 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:47:23,858 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:47:23,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 02:47:23,858 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:47:23,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:47:23,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1474848977, now seen corresponding path program 1 times [2024-10-24 02:47:23,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:47:23,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821296019] [2024-10-24 02:47:23,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:47:23,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:47:23,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:47:23,914 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 02:47:23,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:47:23,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821296019] [2024-10-24 02:47:23,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821296019] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:47:23,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:47:23,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:47:23,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513298797] [2024-10-24 02:47:23,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:47:23,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:47:23,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:47:23,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:47:23,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:47:23,916 INFO L87 Difference]: Start difference. First operand 2759 states and 4339 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:23,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:47:23,972 INFO L93 Difference]: Finished difference Result 4814 states and 7385 transitions. [2024-10-24 02:47:23,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:47:23,973 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-10-24 02:47:23,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:47:23,983 INFO L225 Difference]: With dead ends: 4814 [2024-10-24 02:47:23,983 INFO L226 Difference]: Without dead ends: 3691 [2024-10-24 02:47:23,985 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 02:47:23,986 INFO L432 NwaCegarLoop]: 1590 mSDtfsCounter, 1494 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1494 SdHoareTripleChecker+Valid, 1659 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 02:47:23,986 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1494 Valid, 1659 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:47:23,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3691 states. [2024-10-24 02:47:24,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3691 to 3689. [2024-10-24 02:47:24,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3689 states, 3687 states have (on average 1.537564415513968) internal successors, (5669), 3688 states have internal predecessors, (5669), 0 states have call successors, (0), 0 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 02:47:24,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3689 states to 3689 states and 5669 transitions. [2024-10-24 02:47:24,073 INFO L78 Accepts]: Start accepts. Automaton has 3689 states and 5669 transitions. Word has length 57 [2024-10-24 02:47:24,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:47:24,074 INFO L471 AbstractCegarLoop]: Abstraction has 3689 states and 5669 transitions. [2024-10-24 02:47:24,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:24,075 INFO L276 IsEmpty]: Start isEmpty. Operand 3689 states and 5669 transitions. [2024-10-24 02:47:24,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-10-24 02:47:24,075 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:47:24,076 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:47:24,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-24 02:47:24,076 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:47:24,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:47:24,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1775244357, now seen corresponding path program 1 times [2024-10-24 02:47:24,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:47:24,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060055210] [2024-10-24 02:47:24,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:47:24,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:47:24,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:47:24,231 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 02:47:24,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:47:24,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060055210] [2024-10-24 02:47:24,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060055210] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:47:24,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:47:24,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:47:24,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298315919] [2024-10-24 02:47:24,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:47:24,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 02:47:24,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:47:24,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 02:47:24,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 02:47:24,235 INFO L87 Difference]: Start difference. First operand 3689 states and 5669 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 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 02:47:30,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:47:30,418 INFO L93 Difference]: Finished difference Result 5944 states and 9978 transitions. [2024-10-24 02:47:30,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 02:47:30,419 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-10-24 02:47:30,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:47:30,442 INFO L225 Difference]: With dead ends: 5944 [2024-10-24 02:47:30,442 INFO L226 Difference]: Without dead ends: 5191 [2024-10-24 02:47:30,444 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 02:47:30,444 INFO L432 NwaCegarLoop]: 794 mSDtfsCounter, 2384 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5521 mSolverCounterSat, 1100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2384 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 6621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1100 IncrementalHoareTripleChecker+Valid, 5521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:47:30,444 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2384 Valid, 812 Invalid, 6621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1100 Valid, 5521 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2024-10-24 02:47:30,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5191 states. [2024-10-24 02:47:30,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5191 to 5191. [2024-10-24 02:47:30,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5191 states, 5189 states have (on average 1.5022162266332626) internal successors, (7795), 5190 states have internal predecessors, (7795), 0 states have call successors, (0), 0 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 02:47:30,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5191 states to 5191 states and 7795 transitions. [2024-10-24 02:47:30,553 INFO L78 Accepts]: Start accepts. Automaton has 5191 states and 7795 transitions. Word has length 62 [2024-10-24 02:47:30,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:47:30,553 INFO L471 AbstractCegarLoop]: Abstraction has 5191 states and 7795 transitions. [2024-10-24 02:47:30,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 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 02:47:30,553 INFO L276 IsEmpty]: Start isEmpty. Operand 5191 states and 7795 transitions. [2024-10-24 02:47:30,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-10-24 02:47:30,559 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:47:30,559 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:47:30,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-24 02:47:30,559 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:47:30,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:47:30,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1067448203, now seen corresponding path program 1 times [2024-10-24 02:47:30,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:47:30,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272691921] [2024-10-24 02:47:30,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:47:30,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:47:30,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:47:30,695 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 02:47:30,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:47:30,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272691921] [2024-10-24 02:47:30,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272691921] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:47:30,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:47:30,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 02:47:30,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919086523] [2024-10-24 02:47:30,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:47:30,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 02:47:30,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:47:30,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 02:47:30,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:47:30,698 INFO L87 Difference]: Start difference. First operand 5191 states and 7795 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 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 02:47:31,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:47:31,050 INFO L93 Difference]: Finished difference Result 20291 states and 29609 transitions. [2024-10-24 02:47:31,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 02:47:31,050 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 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 73 [2024-10-24 02:47:31,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:47:31,108 INFO L225 Difference]: With dead ends: 20291 [2024-10-24 02:47:31,108 INFO L226 Difference]: Without dead ends: 17393 [2024-10-24 02:47:31,114 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-10-24 02:47:31,116 INFO L432 NwaCegarLoop]: 1605 mSDtfsCounter, 6314 mSDsluCounter, 2028 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6314 SdHoareTripleChecker+Valid, 3633 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 02:47:31,117 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6314 Valid, 3633 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 02:47:31,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17393 states. [2024-10-24 02:47:31,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17393 to 8087. [2024-10-24 02:47:31,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8087 states, 8085 states have (on average 1.4766852195423623) internal successors, (11939), 8086 states have internal predecessors, (11939), 0 states have call successors, (0), 0 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 02:47:31,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8087 states to 8087 states and 11939 transitions. [2024-10-24 02:47:31,347 INFO L78 Accepts]: Start accepts. Automaton has 8087 states and 11939 transitions. Word has length 73 [2024-10-24 02:47:31,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:47:31,348 INFO L471 AbstractCegarLoop]: Abstraction has 8087 states and 11939 transitions. [2024-10-24 02:47:31,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 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 02:47:31,349 INFO L276 IsEmpty]: Start isEmpty. Operand 8087 states and 11939 transitions. [2024-10-24 02:47:31,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-10-24 02:47:31,350 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:47:31,350 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:47:31,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-24 02:47:31,351 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:47:31,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:47:31,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1107392139, now seen corresponding path program 1 times [2024-10-24 02:47:31,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:47:31,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416096171] [2024-10-24 02:47:31,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:47:31,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:47:31,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:47:31,490 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-24 02:47:31,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:47:31,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416096171] [2024-10-24 02:47:31,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416096171] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:47:31,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:47:31,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 02:47:31,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906497012] [2024-10-24 02:47:31,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:47:31,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 02:47:31,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:47:31,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 02:47:31,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:47:31,492 INFO L87 Difference]: Start difference. First operand 8087 states and 11939 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 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 02:47:31,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:47:31,810 INFO L93 Difference]: Finished difference Result 23187 states and 33753 transitions. [2024-10-24 02:47:31,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 02:47:31,810 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 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 73 [2024-10-24 02:47:31,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:47:31,842 INFO L225 Difference]: With dead ends: 23187 [2024-10-24 02:47:31,843 INFO L226 Difference]: Without dead ends: 20289 [2024-10-24 02:47:31,851 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-10-24 02:47:31,852 INFO L432 NwaCegarLoop]: 1602 mSDtfsCounter, 6338 mSDsluCounter, 1955 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6338 SdHoareTripleChecker+Valid, 3557 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 02:47:31,852 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6338 Valid, 3557 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 02:47:31,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20289 states. [2024-10-24 02:47:32,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20289 to 12439. [2024-10-24 02:47:32,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12439 states, 12437 states have (on average 1.4565409664710138) internal successors, (18115), 12438 states have internal predecessors, (18115), 0 states have call successors, (0), 0 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 02:47:32,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12439 states to 12439 states and 18115 transitions. [2024-10-24 02:47:32,142 INFO L78 Accepts]: Start accepts. Automaton has 12439 states and 18115 transitions. Word has length 73 [2024-10-24 02:47:32,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:47:32,142 INFO L471 AbstractCegarLoop]: Abstraction has 12439 states and 18115 transitions. [2024-10-24 02:47:32,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 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 02:47:32,143 INFO L276 IsEmpty]: Start isEmpty. Operand 12439 states and 18115 transitions. [2024-10-24 02:47:32,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-10-24 02:47:32,144 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:47:32,144 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:47:32,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-24 02:47:32,145 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:47:32,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:47:32,145 INFO L85 PathProgramCache]: Analyzing trace with hash 481736075, now seen corresponding path program 1 times [2024-10-24 02:47:32,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:47:32,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481439165] [2024-10-24 02:47:32,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:47:32,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:47:32,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:47:32,257 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-24 02:47:32,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:47:32,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481439165] [2024-10-24 02:47:32,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481439165] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:47:32,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:47:32,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 02:47:32,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521653031] [2024-10-24 02:47:32,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:47:32,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 02:47:32,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:47:32,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 02:47:32,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:47:32,259 INFO L87 Difference]: Start difference. First operand 12439 states and 18115 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 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 02:47:32,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:47:32,671 INFO L93 Difference]: Finished difference Result 26083 states and 37897 transitions. [2024-10-24 02:47:32,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 02:47:32,672 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 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 73 [2024-10-24 02:47:32,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:47:32,713 INFO L225 Difference]: With dead ends: 26083 [2024-10-24 02:47:32,713 INFO L226 Difference]: Without dead ends: 23185 [2024-10-24 02:47:32,727 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-10-24 02:47:32,728 INFO L432 NwaCegarLoop]: 1599 mSDtfsCounter, 6382 mSDsluCounter, 1921 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6382 SdHoareTripleChecker+Valid, 3520 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 02:47:32,728 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6382 Valid, 3520 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 02:47:32,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23185 states. [2024-10-24 02:47:33,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23185 to 15335. [2024-10-24 02:47:33,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15335 states, 15333 states have (on average 1.451705471858084) internal successors, (22259), 15334 states have internal predecessors, (22259), 0 states have call successors, (0), 0 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 02:47:33,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15335 states to 15335 states and 22259 transitions. [2024-10-24 02:47:33,346 INFO L78 Accepts]: Start accepts. Automaton has 15335 states and 22259 transitions. Word has length 73 [2024-10-24 02:47:33,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:47:33,346 INFO L471 AbstractCegarLoop]: Abstraction has 15335 states and 22259 transitions. [2024-10-24 02:47:33,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 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 02:47:33,346 INFO L276 IsEmpty]: Start isEmpty. Operand 15335 states and 22259 transitions. [2024-10-24 02:47:33,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-10-24 02:47:33,348 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:47:33,348 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:47:33,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-24 02:47:33,349 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:47:33,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:47:33,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1370469515, now seen corresponding path program 1 times [2024-10-24 02:47:33,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:47:33,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852196003] [2024-10-24 02:47:33,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:47:33,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:47:33,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:47:33,497 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-24 02:47:33,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:47:33,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852196003] [2024-10-24 02:47:33,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852196003] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:47:33,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:47:33,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 02:47:33,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561945700] [2024-10-24 02:47:33,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:47:33,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 02:47:33,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:47:33,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 02:47:33,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:47:33,501 INFO L87 Difference]: Start difference. First operand 15335 states and 22259 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 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 02:47:34,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:47:34,080 INFO L93 Difference]: Finished difference Result 28979 states and 42041 transitions. [2024-10-24 02:47:34,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 02:47:34,081 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 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 73 [2024-10-24 02:47:34,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:47:34,117 INFO L225 Difference]: With dead ends: 28979 [2024-10-24 02:47:34,119 INFO L226 Difference]: Without dead ends: 26081 [2024-10-24 02:47:34,133 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-10-24 02:47:34,134 INFO L432 NwaCegarLoop]: 1603 mSDtfsCounter, 6329 mSDsluCounter, 1983 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6329 SdHoareTripleChecker+Valid, 3586 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 02:47:34,136 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6329 Valid, 3586 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 02:47:34,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26081 states. [2024-10-24 02:47:34,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26081 to 18231. [2024-10-24 02:47:34,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18231 states, 18229 states have (on average 1.4484063854298097) internal successors, (26403), 18230 states have internal predecessors, (26403), 0 states have call successors, (0), 0 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 02:47:34,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18231 states to 18231 states and 26403 transitions. [2024-10-24 02:47:34,728 INFO L78 Accepts]: Start accepts. Automaton has 18231 states and 26403 transitions. Word has length 73 [2024-10-24 02:47:34,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:47:34,729 INFO L471 AbstractCegarLoop]: Abstraction has 18231 states and 26403 transitions. [2024-10-24 02:47:34,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 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 02:47:34,729 INFO L276 IsEmpty]: Start isEmpty. Operand 18231 states and 26403 transitions. [2024-10-24 02:47:34,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-10-24 02:47:34,731 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:47:34,731 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:47:34,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-24 02:47:34,731 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:47:34,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:47:34,732 INFO L85 PathProgramCache]: Analyzing trace with hash -823987853, now seen corresponding path program 1 times [2024-10-24 02:47:34,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:47:34,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107917030] [2024-10-24 02:47:34,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:47:34,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:47:34,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:47:34,791 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:47:34,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:47:34,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107917030] [2024-10-24 02:47:34,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107917030] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:47:34,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:47:34,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:47:34,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976876318] [2024-10-24 02:47:34,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:47:34,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:47:34,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:47:34,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:47:34,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:47:34,793 INFO L87 Difference]: Start difference. First operand 18231 states and 26403 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:35,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:47:35,013 INFO L93 Difference]: Finished difference Result 29518 states and 42793 transitions. [2024-10-24 02:47:35,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:47:35,014 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2024-10-24 02:47:35,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:47:35,029 INFO L225 Difference]: With dead ends: 29518 [2024-10-24 02:47:35,029 INFO L226 Difference]: Without dead ends: 13580 [2024-10-24 02:47:35,045 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 02:47:35,046 INFO L432 NwaCegarLoop]: 1580 mSDtfsCounter, 50 mSDsluCounter, 1526 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 3106 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 02:47:35,047 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 3106 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:47:35,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13580 states. [2024-10-24 02:47:35,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13580 to 13578. [2024-10-24 02:47:35,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13578 states, 13576 states have (on average 1.4594873305833824) internal successors, (19814), 13577 states have internal predecessors, (19814), 0 states have call successors, (0), 0 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 02:47:35,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13578 states to 13578 states and 19814 transitions. [2024-10-24 02:47:35,334 INFO L78 Accepts]: Start accepts. Automaton has 13578 states and 19814 transitions. Word has length 75 [2024-10-24 02:47:35,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:47:35,335 INFO L471 AbstractCegarLoop]: Abstraction has 13578 states and 19814 transitions. [2024-10-24 02:47:35,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:35,335 INFO L276 IsEmpty]: Start isEmpty. Operand 13578 states and 19814 transitions. [2024-10-24 02:47:35,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-10-24 02:47:35,340 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:47:35,341 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:47:35,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-24 02:47:35,341 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:47:35,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:47:35,341 INFO L85 PathProgramCache]: Analyzing trace with hash 865276784, now seen corresponding path program 1 times [2024-10-24 02:47:35,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:47:35,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283051087] [2024-10-24 02:47:35,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:47:35,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:47:35,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:47:35,489 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 02:47:35,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:47:35,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283051087] [2024-10-24 02:47:35,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283051087] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:47:35,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:47:35,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 02:47:35,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966635366] [2024-10-24 02:47:35,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:47:35,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 02:47:35,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:47:35,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 02:47:35,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:47:35,491 INFO L87 Difference]: Start difference. First operand 13578 states and 19814 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:36,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:47:36,005 INFO L93 Difference]: Finished difference Result 23830 states and 34700 transitions. [2024-10-24 02:47:36,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 02:47:36,006 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2024-10-24 02:47:36,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:47:36,029 INFO L225 Difference]: With dead ends: 23830 [2024-10-24 02:47:36,029 INFO L226 Difference]: Without dead ends: 21780 [2024-10-24 02:47:36,036 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-10-24 02:47:36,036 INFO L432 NwaCegarLoop]: 1597 mSDtfsCounter, 6321 mSDsluCounter, 2095 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6321 SdHoareTripleChecker+Valid, 3692 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 02:47:36,037 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6321 Valid, 3692 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 02:47:36,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21780 states. [2024-10-24 02:47:36,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21780 to 15626. [2024-10-24 02:47:36,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15626 states, 15624 states have (on average 1.456605222734255) internal successors, (22758), 15625 states have internal predecessors, (22758), 0 states have call successors, (0), 0 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 02:47:36,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15626 states to 15626 states and 22758 transitions. [2024-10-24 02:47:36,345 INFO L78 Accepts]: Start accepts. Automaton has 15626 states and 22758 transitions. Word has length 75 [2024-10-24 02:47:36,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:47:36,345 INFO L471 AbstractCegarLoop]: Abstraction has 15626 states and 22758 transitions. [2024-10-24 02:47:36,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:36,346 INFO L276 IsEmpty]: Start isEmpty. Operand 15626 states and 22758 transitions. [2024-10-24 02:47:36,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-10-24 02:47:36,347 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:47:36,347 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:47:36,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-24 02:47:36,348 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:47:36,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:47:36,348 INFO L85 PathProgramCache]: Analyzing trace with hash -2077236487, now seen corresponding path program 1 times [2024-10-24 02:47:36,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:47:36,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602526519] [2024-10-24 02:47:36,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:47:36,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:47:36,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:47:36,464 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:47:36,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:47:36,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602526519] [2024-10-24 02:47:36,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602526519] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:47:36,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:47:36,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:47:36,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437793488] [2024-10-24 02:47:36,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:47:36,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:47:36,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:47:36,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:47:36,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:47:36,466 INFO L87 Difference]: Start difference. First operand 15626 states and 22758 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:36,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:47:36,586 INFO L93 Difference]: Finished difference Result 22286 states and 32328 transitions. [2024-10-24 02:47:36,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:47:36,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-10-24 02:47:36,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:47:36,595 INFO L225 Difference]: With dead ends: 22286 [2024-10-24 02:47:36,596 INFO L226 Difference]: Without dead ends: 8972 [2024-10-24 02:47:36,606 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 02:47:36,607 INFO L432 NwaCegarLoop]: 1573 mSDtfsCounter, 45 mSDsluCounter, 1518 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3091 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 02:47:36,607 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 3091 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:47:36,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8972 states. [2024-10-24 02:47:36,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8972 to 8970. [2024-10-24 02:47:36,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8970 states, 8968 states have (on average 1.4591882247992864) internal successors, (13086), 8969 states have internal predecessors, (13086), 0 states have call successors, (0), 0 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 02:47:36,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8970 states to 8970 states and 13086 transitions. [2024-10-24 02:47:36,862 INFO L78 Accepts]: Start accepts. Automaton has 8970 states and 13086 transitions. Word has length 76 [2024-10-24 02:47:36,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:47:36,862 INFO L471 AbstractCegarLoop]: Abstraction has 8970 states and 13086 transitions. [2024-10-24 02:47:36,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:36,862 INFO L276 IsEmpty]: Start isEmpty. Operand 8970 states and 13086 transitions. [2024-10-24 02:47:36,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-10-24 02:47:36,863 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:47:36,864 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:47:36,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-24 02:47:36,864 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:47:36,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:47:36,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1152666791, now seen corresponding path program 1 times [2024-10-24 02:47:36,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:47:36,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062427712] [2024-10-24 02:47:36,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:47:36,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:47:36,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:47:36,922 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:47:36,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:47:36,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062427712] [2024-10-24 02:47:36,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062427712] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:47:36,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:47:36,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:47:36,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354248693] [2024-10-24 02:47:36,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:47:36,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:47:36,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:47:36,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:47:36,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:47:36,924 INFO L87 Difference]: Start difference. First operand 8970 states and 13086 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:36,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:47:36,996 INFO L93 Difference]: Finished difference Result 12302 states and 17820 transitions. [2024-10-24 02:47:36,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:47:36,996 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-10-24 02:47:36,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:47:37,002 INFO L225 Difference]: With dead ends: 12302 [2024-10-24 02:47:37,002 INFO L226 Difference]: Without dead ends: 5644 [2024-10-24 02:47:37,008 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 02:47:37,009 INFO L432 NwaCegarLoop]: 1566 mSDtfsCounter, 42 mSDsluCounter, 1510 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 3076 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 02:47:37,009 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 3076 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:47:37,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5644 states. [2024-10-24 02:47:37,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5644 to 5642. [2024-10-24 02:47:37,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5642 states, 5640 states have (on average 1.471985815602837) internal successors, (8302), 5641 states have internal predecessors, (8302), 0 states have call successors, (0), 0 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 02:47:37,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5642 states to 5642 states and 8302 transitions. [2024-10-24 02:47:37,097 INFO L78 Accepts]: Start accepts. Automaton has 5642 states and 8302 transitions. Word has length 78 [2024-10-24 02:47:37,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:47:37,098 INFO L471 AbstractCegarLoop]: Abstraction has 5642 states and 8302 transitions. [2024-10-24 02:47:37,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:37,098 INFO L276 IsEmpty]: Start isEmpty. Operand 5642 states and 8302 transitions. [2024-10-24 02:47:37,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-10-24 02:47:37,099 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:47:37,099 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:47:37,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-24 02:47:37,099 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:47:37,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:47:37,100 INFO L85 PathProgramCache]: Analyzing trace with hash 592619477, now seen corresponding path program 1 times [2024-10-24 02:47:37,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:47:37,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833504806] [2024-10-24 02:47:37,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:47:37,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:47:37,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:47:37,167 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:47:37,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:47:37,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833504806] [2024-10-24 02:47:37,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833504806] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:47:37,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:47:37,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:47:37,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663402729] [2024-10-24 02:47:37,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:47:37,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:47:37,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:47:37,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:47:37,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:47:37,170 INFO L87 Difference]: Start difference. First operand 5642 states and 8302 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 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 02:47:37,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:47:37,213 INFO L93 Difference]: Finished difference Result 7310 states and 10644 transitions. [2024-10-24 02:47:37,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:47:37,214 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2024-10-24 02:47:37,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:47:37,218 INFO L225 Difference]: With dead ends: 7310 [2024-10-24 02:47:37,218 INFO L226 Difference]: Without dead ends: 3980 [2024-10-24 02:47:37,220 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 02:47:37,221 INFO L432 NwaCegarLoop]: 1559 mSDtfsCounter, 39 mSDsluCounter, 1502 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 3061 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 02:47:37,221 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 3061 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:47:37,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3980 states. [2024-10-24 02:47:37,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3980 to 3978. [2024-10-24 02:47:37,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3978 states, 3976 states have (on average 1.4929577464788732) internal successors, (5936), 3977 states have internal predecessors, (5936), 0 states have call successors, (0), 0 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 02:47:37,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3978 states to 3978 states and 5936 transitions. [2024-10-24 02:47:37,270 INFO L78 Accepts]: Start accepts. Automaton has 3978 states and 5936 transitions. Word has length 80 [2024-10-24 02:47:37,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:47:37,270 INFO L471 AbstractCegarLoop]: Abstraction has 3978 states and 5936 transitions. [2024-10-24 02:47:37,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 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 02:47:37,271 INFO L276 IsEmpty]: Start isEmpty. Operand 3978 states and 5936 transitions. [2024-10-24 02:47:37,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-10-24 02:47:37,271 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:47:37,271 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:47:37,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-24 02:47:37,272 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:47:37,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:47:37,272 INFO L85 PathProgramCache]: Analyzing trace with hash -495332221, now seen corresponding path program 1 times [2024-10-24 02:47:37,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:47:37,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980051517] [2024-10-24 02:47:37,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:47:37,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:47:37,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:47:37,330 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:47:37,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:47:37,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980051517] [2024-10-24 02:47:37,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980051517] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:47:37,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:47:37,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:47:37,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967332539] [2024-10-24 02:47:37,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:47:37,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:47:37,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:47:37,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:47:37,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:47:37,332 INFO L87 Difference]: Start difference. First operand 3978 states and 5936 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 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 02:47:37,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:47:37,365 INFO L93 Difference]: Finished difference Result 4814 states and 7095 transitions. [2024-10-24 02:47:37,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:47:37,367 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2024-10-24 02:47:37,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:47:37,371 INFO L225 Difference]: With dead ends: 4814 [2024-10-24 02:47:37,371 INFO L226 Difference]: Without dead ends: 3148 [2024-10-24 02:47:37,373 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 02:47:37,373 INFO L432 NwaCegarLoop]: 1552 mSDtfsCounter, 36 mSDsluCounter, 1494 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 3046 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 02:47:37,373 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 3046 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:47:37,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3148 states. [2024-10-24 02:47:37,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3148 to 3146. [2024-10-24 02:47:37,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3146 states, 3144 states have (on average 1.5159033078880406) internal successors, (4766), 3145 states have internal predecessors, (4766), 0 states have call successors, (0), 0 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 02:47:37,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3146 states to 3146 states and 4766 transitions. [2024-10-24 02:47:37,408 INFO L78 Accepts]: Start accepts. Automaton has 3146 states and 4766 transitions. Word has length 82 [2024-10-24 02:47:37,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:47:37,408 INFO L471 AbstractCegarLoop]: Abstraction has 3146 states and 4766 transitions. [2024-10-24 02:47:37,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 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 02:47:37,409 INFO L276 IsEmpty]: Start isEmpty. Operand 3146 states and 4766 transitions. [2024-10-24 02:47:37,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-10-24 02:47:37,409 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:47:37,410 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:47:37,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-24 02:47:37,410 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:47:37,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:47:37,410 INFO L85 PathProgramCache]: Analyzing trace with hash -323964239, now seen corresponding path program 1 times [2024-10-24 02:47:37,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:47:37,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797697585] [2024-10-24 02:47:37,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:47:37,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:47:37,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:47:38,363 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:47:38,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:47:38,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797697585] [2024-10-24 02:47:38,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797697585] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:47:38,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561910170] [2024-10-24 02:47:38,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:47:38,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:47:38,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:47:38,367 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 02:47:38,368 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 02:47:38,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:47:38,525 INFO L255 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-24 02:47:38,532 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:47:38,821 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 02:47:38,822 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 02:47:39,186 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 02:47:39,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1561910170] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 02:47:39,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 02:47:39,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 18 [2024-10-24 02:47:39,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154794737] [2024-10-24 02:47:39,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 02:47:39,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-24 02:47:39,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:47:39,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-24 02:47:39,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2024-10-24 02:47:39,188 INFO L87 Difference]: Start difference. First operand 3146 states and 4766 transitions. Second operand has 18 states, 18 states have (on average 13.222222222222221) internal successors, (238), 18 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:41,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:47:41,731 INFO L93 Difference]: Finished difference Result 8605 states and 12134 transitions. [2024-10-24 02:47:41,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-10-24 02:47:41,732 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 13.222222222222221) internal successors, (238), 18 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2024-10-24 02:47:41,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:47:41,740 INFO L225 Difference]: With dead ends: 8605 [2024-10-24 02:47:41,740 INFO L226 Difference]: Without dead ends: 7771 [2024-10-24 02:47:41,743 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1047 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=714, Invalid=2946, Unknown=0, NotChecked=0, Total=3660 [2024-10-24 02:47:41,743 INFO L432 NwaCegarLoop]: 1518 mSDtfsCounter, 13517 mSDsluCounter, 6414 mSDsCounter, 0 mSdLazyCounter, 843 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13517 SdHoareTripleChecker+Valid, 7932 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-24 02:47:41,744 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13517 Valid, 7932 Invalid, 892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 843 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-24 02:47:41,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7771 states. [2024-10-24 02:47:41,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7771 to 7723. [2024-10-24 02:47:41,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7723 states, 7721 states have (on average 1.3745628804558996) internal successors, (10613), 7722 states have internal predecessors, (10613), 0 states have call successors, (0), 0 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 02:47:41,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7723 states to 7723 states and 10613 transitions. [2024-10-24 02:47:41,967 INFO L78 Accepts]: Start accepts. Automaton has 7723 states and 10613 transitions. Word has length 84 [2024-10-24 02:47:41,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:47:41,967 INFO L471 AbstractCegarLoop]: Abstraction has 7723 states and 10613 transitions. [2024-10-24 02:47:41,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 13.222222222222221) internal successors, (238), 18 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:41,968 INFO L276 IsEmpty]: Start isEmpty. Operand 7723 states and 10613 transitions. [2024-10-24 02:47:41,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-10-24 02:47:41,969 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:47:41,969 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:47:41,982 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-24 02:47:42,173 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,SelfDestructingSolverStorable22 [2024-10-24 02:47:42,174 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:47:42,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:47:42,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1145862240, now seen corresponding path program 1 times [2024-10-24 02:47:42,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:47:42,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336085785] [2024-10-24 02:47:42,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:47:42,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:47:42,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:47:42,860 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:47:42,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:47:42,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336085785] [2024-10-24 02:47:42,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336085785] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:47:42,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185710327] [2024-10-24 02:47:42,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:47:42,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:47:42,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:47:42,863 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 02:47:42,865 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 02:47:42,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:47:42,995 INFO L255 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-24 02:47:42,998 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:47:43,581 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:47:43,581 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 02:47:45,057 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:47:45,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185710327] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 02:47:45,058 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 02:47:45,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 13] total 35 [2024-10-24 02:47:45,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51952053] [2024-10-24 02:47:45,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 02:47:45,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-10-24 02:47:45,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:47:45,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-10-24 02:47:45,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1039, Unknown=0, NotChecked=0, Total=1190 [2024-10-24 02:47:45,062 INFO L87 Difference]: Start difference. First operand 7723 states and 10613 transitions. Second operand has 35 states, 35 states have (on average 6.485714285714286) internal successors, (227), 35 states have internal predecessors, (227), 0 states have call successors, (0), 0 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 02:47:48,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:47:48,434 INFO L93 Difference]: Finished difference Result 24614 states and 32766 transitions. [2024-10-24 02:47:48,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-10-24 02:47:48,434 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 6.485714285714286) internal successors, (227), 35 states have internal predecessors, (227), 0 states have call successors, (0), 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 85 [2024-10-24 02:47:48,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:47:48,450 INFO L225 Difference]: With dead ends: 24614 [2024-10-24 02:47:48,450 INFO L226 Difference]: Without dead ends: 19346 [2024-10-24 02:47:48,458 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1461 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1158, Invalid=5004, Unknown=0, NotChecked=0, Total=6162 [2024-10-24 02:47:48,458 INFO L432 NwaCegarLoop]: 1512 mSDtfsCounter, 27978 mSDsluCounter, 11063 mSDsCounter, 0 mSdLazyCounter, 1291 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27978 SdHoareTripleChecker+Valid, 12575 SdHoareTripleChecker+Invalid, 1353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-24 02:47:48,458 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27978 Valid, 12575 Invalid, 1353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1291 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-24 02:47:48,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19346 states. [2024-10-24 02:47:48,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19346 to 19220. [2024-10-24 02:47:48,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19220 states, 19218 states have (on average 1.3136122385263815) internal successors, (25245), 19219 states have internal predecessors, (25245), 0 states have call successors, (0), 0 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 02:47:48,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19220 states to 19220 states and 25245 transitions. [2024-10-24 02:47:48,967 INFO L78 Accepts]: Start accepts. Automaton has 19220 states and 25245 transitions. Word has length 85 [2024-10-24 02:47:48,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:47:48,968 INFO L471 AbstractCegarLoop]: Abstraction has 19220 states and 25245 transitions. [2024-10-24 02:47:48,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 6.485714285714286) internal successors, (227), 35 states have internal predecessors, (227), 0 states have call successors, (0), 0 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 02:47:48,968 INFO L276 IsEmpty]: Start isEmpty. Operand 19220 states and 25245 transitions. [2024-10-24 02:47:48,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-10-24 02:47:48,969 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:47:48,969 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:47:48,988 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 02:47:49,170 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,SelfDestructingSolverStorable23 [2024-10-24 02:47:49,170 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:47:49,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:47:49,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1804746066, now seen corresponding path program 1 times [2024-10-24 02:47:49,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:47:49,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727880269] [2024-10-24 02:47:49,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:47:49,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:47:49,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:47:50,081 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:47:50,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:47:50,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727880269] [2024-10-24 02:47:50,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727880269] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:47:50,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135138070] [2024-10-24 02:47:50,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:47:50,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:47:50,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:47:50,084 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 02:47:50,085 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 02:47:50,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:47:50,212 INFO L255 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-24 02:47:50,215 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:47:50,582 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:47:50,583 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 02:47:51,277 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:47:51,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135138070] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 02:47:51,278 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 02:47:51,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2024-10-24 02:47:51,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319300350] [2024-10-24 02:47:51,279 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 02:47:51,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-24 02:47:51,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:47:51,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-24 02:47:51,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=666, Unknown=0, NotChecked=0, Total=756 [2024-10-24 02:47:51,280 INFO L87 Difference]: Start difference. First operand 19220 states and 25245 transitions. Second operand has 28 states, 28 states have (on average 8.142857142857142) internal successors, (228), 27 states have internal predecessors, (228), 0 states have call successors, (0), 0 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 02:47:53,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:47:53,759 INFO L93 Difference]: Finished difference Result 52729 states and 68407 transitions. [2024-10-24 02:47:53,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-10-24 02:47:53,759 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 8.142857142857142) internal successors, (228), 27 states have internal predecessors, (228), 0 states have call successors, (0), 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 85 [2024-10-24 02:47:53,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:47:53,805 INFO L225 Difference]: With dead ends: 52729 [2024-10-24 02:47:53,805 INFO L226 Difference]: Without dead ends: 42285 [2024-10-24 02:47:53,821 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 819 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=684, Invalid=2976, Unknown=0, NotChecked=0, Total=3660 [2024-10-24 02:47:53,822 INFO L432 NwaCegarLoop]: 1529 mSDtfsCounter, 16098 mSDsluCounter, 8096 mSDsCounter, 0 mSdLazyCounter, 1106 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16098 SdHoareTripleChecker+Valid, 9625 SdHoareTripleChecker+Invalid, 1143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-24 02:47:53,822 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16098 Valid, 9625 Invalid, 1143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1106 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-24 02:47:53,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42285 states. [2024-10-24 02:47:55,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42285 to 39164. [2024-10-24 02:47:55,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39164 states, 39162 states have (on average 1.2873959450487718) internal successors, (50417), 39163 states have internal predecessors, (50417), 0 states have call successors, (0), 0 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 02:47:55,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39164 states to 39164 states and 50417 transitions. [2024-10-24 02:47:55,089 INFO L78 Accepts]: Start accepts. Automaton has 39164 states and 50417 transitions. Word has length 85 [2024-10-24 02:47:55,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:47:55,089 INFO L471 AbstractCegarLoop]: Abstraction has 39164 states and 50417 transitions. [2024-10-24 02:47:55,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 8.142857142857142) internal successors, (228), 27 states have internal predecessors, (228), 0 states have call successors, (0), 0 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 02:47:55,090 INFO L276 IsEmpty]: Start isEmpty. Operand 39164 states and 50417 transitions. [2024-10-24 02:47:55,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-10-24 02:47:55,092 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:47:55,092 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:47:55,108 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 02:47:55,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:47:55,294 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:47:55,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:47:55,294 INFO L85 PathProgramCache]: Analyzing trace with hash 356577535, now seen corresponding path program 1 times [2024-10-24 02:47:55,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:47:55,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214009420] [2024-10-24 02:47:55,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:47:55,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:47:55,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:47:55,541 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:47:55,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:47:55,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214009420] [2024-10-24 02:47:55,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214009420] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:47:55,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937488619] [2024-10-24 02:47:55,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:47:55,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:47:55,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:47:55,544 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 02:47:55,545 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 02:47:55,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:47:55,668 INFO L255 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-24 02:47:55,671 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:47:56,223 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:47:56,223 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 02:47:57,374 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:47:57,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937488619] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 02:47:57,375 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 02:47:57,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 13] total 31 [2024-10-24 02:47:57,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024148514] [2024-10-24 02:47:57,375 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 02:47:57,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-10-24 02:47:57,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:47:57,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-10-24 02:47:57,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=802, Unknown=0, NotChecked=0, Total=930 [2024-10-24 02:47:57,377 INFO L87 Difference]: Start difference. First operand 39164 states and 50417 transitions. Second operand has 31 states, 31 states have (on average 7.903225806451613) internal successors, (245), 31 states have internal predecessors, (245), 0 states have call successors, (0), 0 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 02:48:00,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:48:00,391 INFO L93 Difference]: Finished difference Result 68691 states and 88357 transitions. [2024-10-24 02:48:00,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-10-24 02:48:00,392 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 7.903225806451613) internal successors, (245), 31 states have internal predecessors, (245), 0 states have call successors, (0), 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 86 [2024-10-24 02:48:00,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:48:00,444 INFO L225 Difference]: With dead ends: 68691 [2024-10-24 02:48:00,444 INFO L226 Difference]: Without dead ends: 32458 [2024-10-24 02:48:00,477 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 813 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=734, Invalid=2926, Unknown=0, NotChecked=0, Total=3660 [2024-10-24 02:48:00,481 INFO L432 NwaCegarLoop]: 1508 mSDtfsCounter, 15613 mSDsluCounter, 6656 mSDsCounter, 0 mSdLazyCounter, 875 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15613 SdHoareTripleChecker+Valid, 8164 SdHoareTripleChecker+Invalid, 915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-24 02:48:00,486 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15613 Valid, 8164 Invalid, 915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 875 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-24 02:48:00,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32458 states. [2024-10-24 02:48:01,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32458 to 30179. [2024-10-24 02:48:01,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30179 states, 30177 states have (on average 1.2863439042979752) internal successors, (38818), 30178 states have internal predecessors, (38818), 0 states have call successors, (0), 0 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 02:48:01,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30179 states to 30179 states and 38818 transitions. [2024-10-24 02:48:01,616 INFO L78 Accepts]: Start accepts. Automaton has 30179 states and 38818 transitions. Word has length 86 [2024-10-24 02:48:01,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:48:01,617 INFO L471 AbstractCegarLoop]: Abstraction has 30179 states and 38818 transitions. [2024-10-24 02:48:01,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 7.903225806451613) internal successors, (245), 31 states have internal predecessors, (245), 0 states have call successors, (0), 0 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 02:48:01,617 INFO L276 IsEmpty]: Start isEmpty. Operand 30179 states and 38818 transitions. [2024-10-24 02:48:01,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-10-24 02:48:01,619 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:48:01,619 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:48:01,632 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-24 02:48:01,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-10-24 02:48:01,820 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:48:01,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:48:01,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1539165790, now seen corresponding path program 1 times [2024-10-24 02:48:01,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:48:01,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94299132] [2024-10-24 02:48:01,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:48:01,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:48:01,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:48:02,247 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:48:02,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:48:02,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94299132] [2024-10-24 02:48:02,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94299132] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:48:02,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3696673] [2024-10-24 02:48:02,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:48:02,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:48:02,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:48:02,250 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 02:48:02,251 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 02:48:02,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:48:02,391 INFO L255 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-24 02:48:02,398 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:48:02,845 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:48:02,845 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 02:48:03,503 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:48:03,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3696673] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 02:48:03,503 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 02:48:03,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2024-10-24 02:48:03,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806121630] [2024-10-24 02:48:03,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 02:48:03,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-24 02:48:03,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:48:03,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-24 02:48:03,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2024-10-24 02:48:03,505 INFO L87 Difference]: Start difference. First operand 30179 states and 38818 transitions. Second operand has 22 states, 22 states have (on average 9.227272727272727) internal successors, (203), 21 states have internal predecessors, (203), 0 states have call successors, (0), 0 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 02:48:05,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:48:05,266 INFO L93 Difference]: Finished difference Result 77430 states and 98842 transitions. [2024-10-24 02:48:05,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-24 02:48:05,267 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 9.227272727272727) internal successors, (203), 21 states have internal predecessors, (203), 0 states have call successors, (0), 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 87 [2024-10-24 02:48:05,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:48:05,329 INFO L225 Difference]: With dead ends: 77430 [2024-10-24 02:48:05,330 INFO L226 Difference]: Without dead ends: 52070 [2024-10-24 02:48:05,346 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=245, Invalid=747, Unknown=0, NotChecked=0, Total=992 [2024-10-24 02:48:05,347 INFO L432 NwaCegarLoop]: 1523 mSDtfsCounter, 10658 mSDsluCounter, 6372 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10658 SdHoareTripleChecker+Valid, 7895 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 02:48:05,347 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10658 Valid, 7895 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 02:48:05,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52070 states. [2024-10-24 02:48:07,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52070 to 49476. [2024-10-24 02:48:07,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49476 states, 49474 states have (on average 1.2649876702914662) internal successors, (62584), 49475 states have internal predecessors, (62584), 0 states have call successors, (0), 0 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 02:48:07,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49476 states to 49476 states and 62584 transitions. [2024-10-24 02:48:07,297 INFO L78 Accepts]: Start accepts. Automaton has 49476 states and 62584 transitions. Word has length 87 [2024-10-24 02:48:07,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:48:07,298 INFO L471 AbstractCegarLoop]: Abstraction has 49476 states and 62584 transitions. [2024-10-24 02:48:07,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 9.227272727272727) internal successors, (203), 21 states have internal predecessors, (203), 0 states have call successors, (0), 0 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 02:48:07,298 INFO L276 IsEmpty]: Start isEmpty. Operand 49476 states and 62584 transitions. [2024-10-24 02:48:07,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-10-24 02:48:07,306 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:48:07,307 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:48:07,327 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 02:48:07,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-10-24 02:48:07,508 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:48:07,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:48:07,508 INFO L85 PathProgramCache]: Analyzing trace with hash 796430559, now seen corresponding path program 1 times [2024-10-24 02:48:07,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:48:07,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675728304] [2024-10-24 02:48:07,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:48:07,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:48:07,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:48:10,856 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:48:10,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:48:10,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675728304] [2024-10-24 02:48:10,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675728304] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:48:10,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782631077] [2024-10-24 02:48:10,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:48:10,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:48:10,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:48:10,859 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 02:48:10,860 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 02:48:11,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:48:11,045 INFO L255 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-10-24 02:48:11,048 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:48:18,209 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:48:18,210 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 02:48:26,452 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:48:26,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782631077] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 02:48:26,453 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 02:48:26,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 33, 26] total 86 [2024-10-24 02:48:26,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462893927] [2024-10-24 02:48:26,453 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 02:48:26,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2024-10-24 02:48:26,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:48:26,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2024-10-24 02:48:26,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=731, Invalid=6579, Unknown=0, NotChecked=0, Total=7310 [2024-10-24 02:48:26,458 INFO L87 Difference]: Start difference. First operand 49476 states and 62584 transitions. Second operand has 86 states, 86 states have (on average 2.9069767441860463) internal successors, (250), 86 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)