./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label00.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label00.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 5af223e668aa8b86ae636f9439d9ac4f153fc620faa9da4461ac4ba5e2c60ee8 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 02:41:24,203 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 02:41:24,246 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 02:41:24,251 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 02:41:24,252 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 02:41:24,277 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 02:41:24,277 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 02:41:24,278 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 02:41:24,278 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 02:41:24,281 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 02:41:24,281 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 02:41:24,281 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 02:41:24,282 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 02:41:24,282 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 02:41:24,282 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 02:41:24,282 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 02:41:24,282 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 02:41:24,283 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 02:41:24,283 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 02:41:24,284 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 02:41:24,284 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 02:41:24,285 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 02:41:24,285 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 02:41:24,286 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 02:41:24,286 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 02:41:24,286 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 02:41:24,286 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 02:41:24,286 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 02:41:24,286 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 02:41:24,287 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 02:41:24,287 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 02:41:24,287 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 02:41:24,287 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 02:41:24,287 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 02:41:24,287 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 02:41:24,287 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 02:41:24,287 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 02:41:24,288 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 02:41:24,288 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 02:41:24,288 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 02:41:24,288 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 02:41:24,289 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 02:41:24,289 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5af223e668aa8b86ae636f9439d9ac4f153fc620faa9da4461ac4ba5e2c60ee8 [2024-10-24 02:41:24,466 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 02:41:24,486 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 02:41:24,488 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 02:41:24,489 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 02:41:24,489 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 02:41:24,490 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label00.c [2024-10-24 02:41:25,763 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 02:41:26,206 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 02:41:26,206 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label00.c [2024-10-24 02:41:26,230 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4a4424f6/f4c5398bd80447c4b74fe279658c7fd3/FLAG5c79995b5 [2024-10-24 02:41:26,321 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4a4424f6/f4c5398bd80447c4b74fe279658c7fd3 [2024-10-24 02:41:26,324 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 02:41:26,324 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 02:41:26,326 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 02:41:26,326 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 02:41:26,330 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 02:41:26,331 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:41:26" (1/1) ... [2024-10-24 02:41:26,332 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c0f7a5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:41:26, skipping insertion in model container [2024-10-24 02:41:26,332 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:41:26" (1/1) ... [2024-10-24 02:41:26,404 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 02:41:26,622 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label00.c[6450,6463] [2024-10-24 02:41:26,640 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label00.c[8325,8338] [2024-10-24 02:41:27,145 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 02:41:27,153 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 02:41:27,173 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label00.c[6450,6463] [2024-10-24 02:41:27,177 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label00.c[8325,8338] [2024-10-24 02:41:27,442 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 02:41:27,464 INFO L204 MainTranslator]: Completed translation [2024-10-24 02:41:27,465 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:41:27 WrapperNode [2024-10-24 02:41:27,465 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 02:41:27,465 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 02:41:27,466 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 02:41:27,466 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 02:41:27,470 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:41:27" (1/1) ... [2024-10-24 02:41:27,527 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:41:27" (1/1) ... [2024-10-24 02:41:27,716 INFO L138 Inliner]: procedures = 35, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 4983 [2024-10-24 02:41:27,716 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 02:41:27,717 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 02:41:27,717 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 02:41:27,718 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 02:41:27,795 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:41:27" (1/1) ... [2024-10-24 02:41:27,796 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:41:27" (1/1) ... [2024-10-24 02:41:27,846 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:41:27" (1/1) ... [2024-10-24 02:41:27,956 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-24 02:41:27,957 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:41:27" (1/1) ... [2024-10-24 02:41:27,957 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:41:27" (1/1) ... [2024-10-24 02:41:28,039 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:41:27" (1/1) ... [2024-10-24 02:41:28,064 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:41:27" (1/1) ... [2024-10-24 02:41:28,082 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:41:27" (1/1) ... [2024-10-24 02:41:28,100 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:41:27" (1/1) ... [2024-10-24 02:41:28,183 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 02:41:28,184 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 02:41:28,184 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 02:41:28,184 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 02:41:28,185 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:41:27" (1/1) ... [2024-10-24 02:41:28,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 02:41:28,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:41:28,210 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 02:41:28,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 02:41:28,245 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 02:41:28,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 02:41:28,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 02:41:28,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 02:41:28,320 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 02:41:28,321 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 02:41:31,397 INFO L? ?]: Removed 734 outVars from TransFormulas that were not future-live. [2024-10-24 02:41:31,397 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 02:41:31,502 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 02:41:31,503 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-24 02:41:31,503 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:41:31 BoogieIcfgContainer [2024-10-24 02:41:31,503 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 02:41:31,505 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 02:41:31,505 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 02:41:31,507 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 02:41:31,507 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:41:26" (1/3) ... [2024-10-24 02:41:31,508 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@574340c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:41:31, skipping insertion in model container [2024-10-24 02:41:31,508 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:41:27" (2/3) ... [2024-10-24 02:41:31,508 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@574340c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:41:31, skipping insertion in model container [2024-10-24 02:41:31,508 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:41:31" (3/3) ... [2024-10-24 02:41:31,510 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label00.c [2024-10-24 02:41:31,523 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 02:41:31,523 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-24 02:41:31,594 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 02:41:31,599 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;@23d6452b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 02:41:31,599 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-24 02:41:31,606 INFO L276 IsEmpty]: Start isEmpty. Operand has 809 states, 806 states have (on average 1.978908188585608) internal successors, (1595), 808 states have internal predecessors, (1595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:31,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-10-24 02:41:31,611 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:41:31,611 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:41:31,612 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:41:31,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:41:31,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1782453649, now seen corresponding path program 1 times [2024-10-24 02:41:31,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:41:31,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099560449] [2024-10-24 02:41:31,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:41:31,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:41:31,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:41:31,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:41:31,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:41:31,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099560449] [2024-10-24 02:41:31,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099560449] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:41:31,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:41:31,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 02:41:31,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109904039] [2024-10-24 02:41:31,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:41:31,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-24 02:41:31,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:41:31,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-24 02:41:31,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 02:41:31,811 INFO L87 Difference]: Start difference. First operand has 809 states, 806 states have (on average 1.978908188585608) internal successors, (1595), 808 states have internal predecessors, (1595), 0 states have call successors, (0), 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 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:31,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:41:31,883 INFO L93 Difference]: Finished difference Result 1597 states and 3151 transitions. [2024-10-24 02:41:31,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-24 02:41:31,886 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2024-10-24 02:41:31,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:41:31,898 INFO L225 Difference]: With dead ends: 1597 [2024-10-24 02:41:31,899 INFO L226 Difference]: Without dead ends: 805 [2024-10-24 02:41:31,903 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 02:41:31,905 INFO L432 NwaCegarLoop]: 1523 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, 1523 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 02:41:31,906 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1523 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:41:31,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2024-10-24 02:41:31,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 805. [2024-10-24 02:41:31,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 803 states have (on average 1.8978829389788294) internal successors, (1524), 804 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:31,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1524 transitions. [2024-10-24 02:41:31,962 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1524 transitions. Word has length 15 [2024-10-24 02:41:31,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:41:31,962 INFO L471 AbstractCegarLoop]: Abstraction has 805 states and 1524 transitions. [2024-10-24 02:41:31,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:31,962 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1524 transitions. [2024-10-24 02:41:31,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-10-24 02:41:31,963 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:41:31,963 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:41:31,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 02:41:31,963 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:41:31,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:41:31,964 INFO L85 PathProgramCache]: Analyzing trace with hash -52894088, now seen corresponding path program 1 times [2024-10-24 02:41:31,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:41:31,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3871108] [2024-10-24 02:41:31,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:41:31,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:41:31,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:41:32,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:41:32,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:41:32,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3871108] [2024-10-24 02:41:32,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3871108] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:41:32,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:41:32,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 02:41:32,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005956547] [2024-10-24 02:41:32,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:41:32,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:41:32,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:41:32,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:41:32,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:41:32,074 INFO L87 Difference]: Start difference. First operand 805 states and 1524 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:34,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:41:34,613 INFO L93 Difference]: Finished difference Result 2309 states and 4397 transitions. [2024-10-24 02:41:34,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:41:34,613 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2024-10-24 02:41:34,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:41:34,619 INFO L225 Difference]: With dead ends: 2309 [2024-10-24 02:41:34,619 INFO L226 Difference]: Without dead ends: 1556 [2024-10-24 02:41:34,620 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:41:34,621 INFO L432 NwaCegarLoop]: 503 mSDtfsCounter, 888 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2277 mSolverCounterSat, 591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 2868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 591 IncrementalHoareTripleChecker+Valid, 2277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-10-24 02:41:34,621 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 510 Invalid, 2868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [591 Valid, 2277 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-10-24 02:41:34,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1556 states. [2024-10-24 02:41:34,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1556 to 1556. [2024-10-24 02:41:34,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1556 states, 1554 states have (on average 1.6415701415701416) internal successors, (2551), 1555 states have internal predecessors, (2551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:34,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1556 states to 1556 states and 2551 transitions. [2024-10-24 02:41:34,660 INFO L78 Accepts]: Start accepts. Automaton has 1556 states and 2551 transitions. Word has length 15 [2024-10-24 02:41:34,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:41:34,661 INFO L471 AbstractCegarLoop]: Abstraction has 1556 states and 2551 transitions. [2024-10-24 02:41:34,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:34,661 INFO L276 IsEmpty]: Start isEmpty. Operand 1556 states and 2551 transitions. [2024-10-24 02:41:34,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-10-24 02:41:34,662 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:41:34,662 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:41:34,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 02:41:34,662 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:41:34,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:41:34,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1602115405, now seen corresponding path program 1 times [2024-10-24 02:41:34,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:41:34,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936000248] [2024-10-24 02:41:34,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:41:34,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:41:34,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:41:34,760 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 02:41:34,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:41:34,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936000248] [2024-10-24 02:41:34,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936000248] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:41:34,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:41:34,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 02:41:34,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298112177] [2024-10-24 02:41:34,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:41:34,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 02:41:34,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:41:34,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 02:41:34,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 02:41:34,762 INFO L87 Difference]: Start difference. First operand 1556 states and 2551 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:34,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:41:34,802 INFO L93 Difference]: Finished difference Result 1590 states and 2603 transitions. [2024-10-24 02:41:34,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 02:41:34,803 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-10-24 02:41:34,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:41:34,808 INFO L225 Difference]: With dead ends: 1590 [2024-10-24 02:41:34,808 INFO L226 Difference]: Without dead ends: 1556 [2024-10-24 02:41:34,810 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 02:41:34,811 INFO L432 NwaCegarLoop]: 1521 mSDtfsCounter, 0 mSDsluCounter, 3022 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4543 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:41:34,813 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4543 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:41:34,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1556 states. [2024-10-24 02:41:34,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1556 to 1556. [2024-10-24 02:41:34,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1556 states, 1554 states have (on average 1.6312741312741312) internal successors, (2535), 1555 states have internal predecessors, (2535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:34,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1556 states to 1556 states and 2535 transitions. [2024-10-24 02:41:34,840 INFO L78 Accepts]: Start accepts. Automaton has 1556 states and 2535 transitions. Word has length 17 [2024-10-24 02:41:34,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:41:34,842 INFO L471 AbstractCegarLoop]: Abstraction has 1556 states and 2535 transitions. [2024-10-24 02:41:34,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:34,843 INFO L276 IsEmpty]: Start isEmpty. Operand 1556 states and 2535 transitions. [2024-10-24 02:41:34,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-10-24 02:41:34,844 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:41:34,844 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:41:34,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 02:41:34,845 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:41:34,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:41:34,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1530211809, now seen corresponding path program 1 times [2024-10-24 02:41:34,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:41:34,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917020614] [2024-10-24 02:41:34,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:41:34,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:41:34,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:41:34,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:41:34,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:41:34,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917020614] [2024-10-24 02:41:34,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917020614] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:41:34,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:41:34,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 02:41:34,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842323665] [2024-10-24 02:41:34,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:41:34,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 02:41:34,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:41:34,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 02:41:34,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 02:41:34,959 INFO L87 Difference]: Start difference. First operand 1556 states and 2535 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:35,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:41:35,059 INFO L93 Difference]: Finished difference Result 1742 states and 2829 transitions. [2024-10-24 02:41:35,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 02:41:35,059 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2024-10-24 02:41:35,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:41:35,064 INFO L225 Difference]: With dead ends: 1742 [2024-10-24 02:41:35,065 INFO L226 Difference]: Without dead ends: 1711 [2024-10-24 02:41:35,066 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-10-24 02:41:35,067 INFO L432 NwaCegarLoop]: 1499 mSDtfsCounter, 4669 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4669 SdHoareTripleChecker+Valid, 1742 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 02:41:35,067 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4669 Valid, 1742 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 02:41:35,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1711 states. [2024-10-24 02:41:35,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1711 to 1585. [2024-10-24 02:41:35,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1585 states, 1583 states have (on average 1.6304485154769426) internal successors, (2581), 1584 states have internal predecessors, (2581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:35,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 2581 transitions. [2024-10-24 02:41:35,095 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 2581 transitions. Word has length 32 [2024-10-24 02:41:35,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:41:35,096 INFO L471 AbstractCegarLoop]: Abstraction has 1585 states and 2581 transitions. [2024-10-24 02:41:35,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:35,096 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 2581 transitions. [2024-10-24 02:41:35,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-24 02:41:35,097 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:41:35,097 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:41:35,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 02:41:35,097 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:41:35,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:41:35,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1777423345, now seen corresponding path program 1 times [2024-10-24 02:41:35,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:41:35,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012211649] [2024-10-24 02:41:35,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:41:35,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:41:35,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:41:35,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:41:35,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:41:35,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012211649] [2024-10-24 02:41:35,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012211649] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:41:35,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:41:35,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:41:35,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020307927] [2024-10-24 02:41:35,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:41:35,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:41:35,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:41:35,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:41:35,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:41:35,170 INFO L87 Difference]: Start difference. First operand 1585 states and 2581 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:35,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:41:35,205 INFO L93 Difference]: Finished difference Result 1694 states and 2752 transitions. [2024-10-24 02:41:35,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:41:35,206 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2024-10-24 02:41:35,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:41:35,211 INFO L225 Difference]: With dead ends: 1694 [2024-10-24 02:41:35,211 INFO L226 Difference]: Without dead ends: 1634 [2024-10-24 02:41:35,212 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:41:35,213 INFO L432 NwaCegarLoop]: 1501 mSDtfsCounter, 1466 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 1542 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 02:41:35,213 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1466 Valid, 1542 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:41:35,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1634 states. [2024-10-24 02:41:35,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1634 to 1630. [2024-10-24 02:41:35,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1630 states, 1628 states have (on average 1.6271498771498771) internal successors, (2649), 1629 states have internal predecessors, (2649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:35,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1630 states to 1630 states and 2649 transitions. [2024-10-24 02:41:35,243 INFO L78 Accepts]: Start accepts. Automaton has 1630 states and 2649 transitions. Word has length 34 [2024-10-24 02:41:35,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:41:35,243 INFO L471 AbstractCegarLoop]: Abstraction has 1630 states and 2649 transitions. [2024-10-24 02:41:35,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:35,243 INFO L276 IsEmpty]: Start isEmpty. Operand 1630 states and 2649 transitions. [2024-10-24 02:41:35,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-24 02:41:35,245 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:41:35,245 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:41:35,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 02:41:35,246 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:41:35,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:41:35,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1775278393, now seen corresponding path program 1 times [2024-10-24 02:41:35,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:41:35,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178056437] [2024-10-24 02:41:35,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:41:35,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:41:35,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:41:35,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:41:35,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:41:35,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178056437] [2024-10-24 02:41:35,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178056437] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:41:35,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:41:35,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 02:41:35,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984098711] [2024-10-24 02:41:35,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:41:35,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 02:41:35,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:41:35,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 02:41:35,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 02:41:35,392 INFO L87 Difference]: Start difference. First operand 1630 states and 2649 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:35,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:41:35,453 INFO L93 Difference]: Finished difference Result 1737 states and 2813 transitions. [2024-10-24 02:41:35,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 02:41:35,455 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2024-10-24 02:41:35,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:41:35,460 INFO L225 Difference]: With dead ends: 1737 [2024-10-24 02:41:35,461 INFO L226 Difference]: Without dead ends: 1632 [2024-10-24 02:41:35,462 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-10-24 02:41:35,464 INFO L432 NwaCegarLoop]: 1500 mSDtfsCounter, 2948 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2948 SdHoareTripleChecker+Valid, 1588 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:41:35,465 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2948 Valid, 1588 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:41:35,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1632 states. [2024-10-24 02:41:35,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1632 to 1630. [2024-10-24 02:41:35,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1630 states, 1628 states have (on average 1.625921375921376) internal successors, (2647), 1629 states have internal predecessors, (2647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:35,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1630 states to 1630 states and 2647 transitions. [2024-10-24 02:41:35,491 INFO L78 Accepts]: Start accepts. Automaton has 1630 states and 2647 transitions. Word has length 34 [2024-10-24 02:41:35,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:41:35,492 INFO L471 AbstractCegarLoop]: Abstraction has 1630 states and 2647 transitions. [2024-10-24 02:41:35,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:35,493 INFO L276 IsEmpty]: Start isEmpty. Operand 1630 states and 2647 transitions. [2024-10-24 02:41:35,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-10-24 02:41:35,495 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:41:35,495 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:41:35,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 02:41:35,495 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:41:35,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:41:35,496 INFO L85 PathProgramCache]: Analyzing trace with hash 672589841, now seen corresponding path program 1 times [2024-10-24 02:41:35,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:41:35,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334455250] [2024-10-24 02:41:35,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:41:35,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:41:35,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:41:35,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:41:35,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:41:35,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334455250] [2024-10-24 02:41:35,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334455250] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:41:35,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:41:35,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 02:41:35,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757588673] [2024-10-24 02:41:35,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:41:35,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 02:41:35,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:41:35,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 02:41:35,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 02:41:35,590 INFO L87 Difference]: Start difference. First operand 1630 states and 2647 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:35,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:41:35,653 INFO L93 Difference]: Finished difference Result 1636 states and 2654 transitions. [2024-10-24 02:41:35,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 02:41:35,653 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-10-24 02:41:35,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:41:35,658 INFO L225 Difference]: With dead ends: 1636 [2024-10-24 02:41:35,658 INFO L226 Difference]: Without dead ends: 1634 [2024-10-24 02:41:35,659 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 02:41:35,661 INFO L432 NwaCegarLoop]: 1504 mSDtfsCounter, 0 mSDsluCounter, 3000 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4504 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:41:35,661 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4504 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:41:35,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1634 states. [2024-10-24 02:41:35,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1634 to 1634. [2024-10-24 02:41:35,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1634 states, 1632 states have (on average 1.6237745098039216) internal successors, (2650), 1633 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:35,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1634 states to 1634 states and 2650 transitions. [2024-10-24 02:41:35,689 INFO L78 Accepts]: Start accepts. Automaton has 1634 states and 2650 transitions. Word has length 35 [2024-10-24 02:41:35,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:41:35,689 INFO L471 AbstractCegarLoop]: Abstraction has 1634 states and 2650 transitions. [2024-10-24 02:41:35,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:35,689 INFO L276 IsEmpty]: Start isEmpty. Operand 1634 states and 2650 transitions. [2024-10-24 02:41:35,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-10-24 02:41:35,691 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:41:35,691 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:41:35,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 02:41:35,692 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:41:35,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:41:35,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1662874585, now seen corresponding path program 1 times [2024-10-24 02:41:35,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:41:35,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207432071] [2024-10-24 02:41:35,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:41:35,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:41:35,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:41:35,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:41:35,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:41:35,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207432071] [2024-10-24 02:41:35,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207432071] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:41:35,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:41:35,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:41:35,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194461623] [2024-10-24 02:41:35,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:41:35,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:41:35,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:41:35,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:41:35,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:41:35,737 INFO L87 Difference]: Start difference. First operand 1634 states and 2650 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:35,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:41:35,769 INFO L93 Difference]: Finished difference Result 1836 states and 2950 transitions. [2024-10-24 02:41:35,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:41:35,769 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2024-10-24 02:41:35,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:41:35,775 INFO L225 Difference]: With dead ends: 1836 [2024-10-24 02:41:35,775 INFO L226 Difference]: Without dead ends: 1727 [2024-10-24 02:41:35,775 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:41:35,777 INFO L432 NwaCegarLoop]: 1520 mSDtfsCounter, 1473 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1473 SdHoareTripleChecker+Valid, 1577 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:41:35,777 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1473 Valid, 1577 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:41:35,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1727 states. [2024-10-24 02:41:35,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1727 to 1725. [2024-10-24 02:41:35,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1725 states, 1723 states have (on average 1.6140452698781196) internal successors, (2781), 1724 states have internal predecessors, (2781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:35,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1725 states to 1725 states and 2781 transitions. [2024-10-24 02:41:35,812 INFO L78 Accepts]: Start accepts. Automaton has 1725 states and 2781 transitions. Word has length 36 [2024-10-24 02:41:35,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:41:35,812 INFO L471 AbstractCegarLoop]: Abstraction has 1725 states and 2781 transitions. [2024-10-24 02:41:35,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:35,812 INFO L276 IsEmpty]: Start isEmpty. Operand 1725 states and 2781 transitions. [2024-10-24 02:41:35,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-10-24 02:41:35,813 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:41:35,813 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:41:35,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 02:41:35,813 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:41:35,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:41:35,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1743359271, now seen corresponding path program 1 times [2024-10-24 02:41:35,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:41:35,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912198327] [2024-10-24 02:41:35,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:41:35,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:41:35,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:41:35,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:41:35,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:41:35,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912198327] [2024-10-24 02:41:35,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912198327] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:41:35,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:41:35,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:41:35,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134935188] [2024-10-24 02:41:35,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:41:35,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:41:35,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:41:35,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:41:35,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:41:35,852 INFO L87 Difference]: Start difference. First operand 1725 states and 2781 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:35,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:41:35,885 INFO L93 Difference]: Finished difference Result 2093 states and 3315 transitions. [2024-10-24 02:41:35,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:41:35,885 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2024-10-24 02:41:35,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:41:35,893 INFO L225 Difference]: With dead ends: 2093 [2024-10-24 02:41:35,893 INFO L226 Difference]: Without dead ends: 1893 [2024-10-24 02:41:35,895 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:41:35,896 INFO L432 NwaCegarLoop]: 1530 mSDtfsCounter, 1475 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1475 SdHoareTripleChecker+Valid, 1583 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:41:35,896 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1475 Valid, 1583 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:41:35,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1893 states. [2024-10-24 02:41:35,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1893 to 1891. [2024-10-24 02:41:35,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1891 states, 1889 states have (on average 1.5939650608787719) internal successors, (3011), 1890 states have internal predecessors, (3011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:35,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1891 states to 1891 states and 3011 transitions. [2024-10-24 02:41:35,931 INFO L78 Accepts]: Start accepts. Automaton has 1891 states and 3011 transitions. Word has length 36 [2024-10-24 02:41:35,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:41:35,931 INFO L471 AbstractCegarLoop]: Abstraction has 1891 states and 3011 transitions. [2024-10-24 02:41:35,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:35,932 INFO L276 IsEmpty]: Start isEmpty. Operand 1891 states and 3011 transitions. [2024-10-24 02:41:35,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-10-24 02:41:35,932 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:41:35,932 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:41:35,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 02:41:35,933 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:41:35,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:41:35,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1790191284, now seen corresponding path program 1 times [2024-10-24 02:41:35,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:41:35,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147318526] [2024-10-24 02:41:35,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:41:35,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:41:35,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:41:35,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:41:35,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:41:35,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147318526] [2024-10-24 02:41:35,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147318526] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:41:35,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:41:35,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:41:35,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585062299] [2024-10-24 02:41:35,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:41:35,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:41:35,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:41:35,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:41:35,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:41:35,976 INFO L87 Difference]: Start difference. First operand 1891 states and 3011 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:36,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:41:36,013 INFO L93 Difference]: Finished difference Result 2282 states and 3585 transitions. [2024-10-24 02:41:36,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:41:36,014 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-10-24 02:41:36,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:41:36,020 INFO L225 Difference]: With dead ends: 2282 [2024-10-24 02:41:36,020 INFO L226 Difference]: Without dead ends: 2063 [2024-10-24 02:41:36,022 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:41:36,022 INFO L432 NwaCegarLoop]: 1535 mSDtfsCounter, 1474 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1584 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:41:36,023 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1584 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:41:36,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2063 states. [2024-10-24 02:41:36,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2063 to 2061. [2024-10-24 02:41:36,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2061 states, 2059 states have (on average 1.5779504613890238) internal successors, (3249), 2060 states have internal predecessors, (3249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:36,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2061 states to 2061 states and 3249 transitions. [2024-10-24 02:41:36,063 INFO L78 Accepts]: Start accepts. Automaton has 2061 states and 3249 transitions. Word has length 38 [2024-10-24 02:41:36,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:41:36,063 INFO L471 AbstractCegarLoop]: Abstraction has 2061 states and 3249 transitions. [2024-10-24 02:41:36,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:36,064 INFO L276 IsEmpty]: Start isEmpty. Operand 2061 states and 3249 transitions. [2024-10-24 02:41:36,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-10-24 02:41:36,065 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:41:36,065 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:41:36,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 02:41:36,065 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:41:36,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:41:36,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1496014032, now seen corresponding path program 1 times [2024-10-24 02:41:36,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:41:36,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410456839] [2024-10-24 02:41:36,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:41:36,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:41:36,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:41:36,163 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-24 02:41:36,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:41:36,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410456839] [2024-10-24 02:41:36,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410456839] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:41:36,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:41:36,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 02:41:36,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467707647] [2024-10-24 02:41:36,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:41:36,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 02:41:36,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:41:36,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 02:41:36,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 02:41:36,165 INFO L87 Difference]: Start difference. First operand 2061 states and 3249 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:36,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:41:36,259 INFO L93 Difference]: Finished difference Result 3785 states and 5697 transitions. [2024-10-24 02:41:36,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 02:41:36,260 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-10-24 02:41:36,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:41:36,269 INFO L225 Difference]: With dead ends: 3785 [2024-10-24 02:41:36,269 INFO L226 Difference]: Without dead ends: 3251 [2024-10-24 02:41:36,270 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:41:36,271 INFO L432 NwaCegarLoop]: 1543 mSDtfsCounter, 3055 mSDsluCounter, 1587 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3055 SdHoareTripleChecker+Valid, 3130 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:41:36,271 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3055 Valid, 3130 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:41:36,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3251 states. [2024-10-24 02:41:36,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3251 to 2593. [2024-10-24 02:41:36,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2593 states, 2591 states have (on average 1.5426476263990738) internal successors, (3997), 2592 states have internal predecessors, (3997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:36,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2593 states to 2593 states and 3997 transitions. [2024-10-24 02:41:36,329 INFO L78 Accepts]: Start accepts. Automaton has 2593 states and 3997 transitions. Word has length 50 [2024-10-24 02:41:36,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:41:36,329 INFO L471 AbstractCegarLoop]: Abstraction has 2593 states and 3997 transitions. [2024-10-24 02:41:36,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:36,329 INFO L276 IsEmpty]: Start isEmpty. Operand 2593 states and 3997 transitions. [2024-10-24 02:41:36,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-10-24 02:41:36,330 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:41:36,330 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:41:36,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-24 02:41:36,330 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:41:36,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:41:36,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1910219824, now seen corresponding path program 1 times [2024-10-24 02:41:36,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:41:36,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461351395] [2024-10-24 02:41:36,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:41:36,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:41:36,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:41:36,454 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 02:41:36,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:41:36,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461351395] [2024-10-24 02:41:36,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461351395] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:41:36,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:41:36,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 02:41:36,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834784314] [2024-10-24 02:41:36,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:41:36,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 02:41:36,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:41:36,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 02:41:36,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 02:41:36,456 INFO L87 Difference]: Start difference. First operand 2593 states and 3997 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:36,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:41:36,541 INFO L93 Difference]: Finished difference Result 4317 states and 6445 transitions. [2024-10-24 02:41:36,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 02:41:36,542 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-10-24 02:41:36,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:41:36,551 INFO L225 Difference]: With dead ends: 4317 [2024-10-24 02:41:36,552 INFO L226 Difference]: Without dead ends: 3783 [2024-10-24 02:41:36,553 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:41:36,553 INFO L432 NwaCegarLoop]: 1544 mSDtfsCounter, 3043 mSDsluCounter, 1609 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3043 SdHoareTripleChecker+Valid, 3153 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:41:36,554 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3043 Valid, 3153 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:41:36,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3783 states. [2024-10-24 02:41:36,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3783 to 3393. [2024-10-24 02:41:36,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3393 states, 3391 states have (on average 1.506635210852256) internal successors, (5109), 3392 states have internal predecessors, (5109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:36,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3393 states to 3393 states and 5109 transitions. [2024-10-24 02:41:36,611 INFO L78 Accepts]: Start accepts. Automaton has 3393 states and 5109 transitions. Word has length 50 [2024-10-24 02:41:36,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:41:36,611 INFO L471 AbstractCegarLoop]: Abstraction has 3393 states and 5109 transitions. [2024-10-24 02:41:36,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:36,611 INFO L276 IsEmpty]: Start isEmpty. Operand 3393 states and 5109 transitions. [2024-10-24 02:41:36,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-10-24 02:41:36,612 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:41:36,612 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:41:36,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-24 02:41:36,612 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:41:36,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:41:36,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1024014232, now seen corresponding path program 1 times [2024-10-24 02:41:36,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:41:36,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823760811] [2024-10-24 02:41:36,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:41:36,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:41:36,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:41:36,679 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:41:36,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:41:36,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823760811] [2024-10-24 02:41:36,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823760811] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:41:36,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:41:36,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:41:36,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971763866] [2024-10-24 02:41:36,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:41:36,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:41:36,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:41:36,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:41:36,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:41:36,682 INFO L87 Difference]: Start difference. First operand 3393 states and 5109 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:36,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:41:36,719 INFO L93 Difference]: Finished difference Result 4756 states and 7059 transitions. [2024-10-24 02:41:36,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:41:36,720 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2024-10-24 02:41:36,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:41:36,726 INFO L225 Difference]: With dead ends: 4756 [2024-10-24 02:41:36,727 INFO L226 Difference]: Without dead ends: 2890 [2024-10-24 02:41:36,729 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:41:36,730 INFO L432 NwaCegarLoop]: 1529 mSDtfsCounter, 34 mSDsluCounter, 1491 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 3020 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:41:36,730 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 3020 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:41:36,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2890 states. [2024-10-24 02:41:36,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2890 to 2888. [2024-10-24 02:41:36,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2888 states, 2886 states have (on average 1.5273735273735274) internal successors, (4408), 2887 states have internal predecessors, (4408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:36,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2888 states to 2888 states and 4408 transitions. [2024-10-24 02:41:36,777 INFO L78 Accepts]: Start accepts. Automaton has 2888 states and 4408 transitions. Word has length 52 [2024-10-24 02:41:36,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:41:36,778 INFO L471 AbstractCegarLoop]: Abstraction has 2888 states and 4408 transitions. [2024-10-24 02:41:36,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:36,778 INFO L276 IsEmpty]: Start isEmpty. Operand 2888 states and 4408 transitions. [2024-10-24 02:41:36,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-10-24 02:41:36,779 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:41:36,779 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] [2024-10-24 02:41:36,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-24 02:41:36,779 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:41:36,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:41:36,779 INFO L85 PathProgramCache]: Analyzing trace with hash -350989803, now seen corresponding path program 1 times [2024-10-24 02:41:36,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:41:36,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517427100] [2024-10-24 02:41:36,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:41:36,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:41:36,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:41:36,837 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 02:41:36,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:41:36,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517427100] [2024-10-24 02:41:36,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517427100] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:41:36,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:41:36,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 02:41:36,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827666853] [2024-10-24 02:41:36,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:41:36,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 02:41:36,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:41:36,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 02:41:36,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 02:41:36,839 INFO L87 Difference]: Start difference. First operand 2888 states and 4408 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:36,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:41:36,942 INFO L93 Difference]: Finished difference Result 4048 states and 6068 transitions. [2024-10-24 02:41:36,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 02:41:36,943 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2024-10-24 02:41:36,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:41:36,947 INFO L225 Difference]: With dead ends: 4048 [2024-10-24 02:41:36,948 INFO L226 Difference]: Without dead ends: 3662 [2024-10-24 02:41:36,948 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:41:36,949 INFO L432 NwaCegarLoop]: 1541 mSDtfsCounter, 3045 mSDsluCounter, 1589 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3045 SdHoareTripleChecker+Valid, 3130 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:41:36,949 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3045 Valid, 3130 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:41:36,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3662 states. [2024-10-24 02:41:36,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3662 to 3272. [2024-10-24 02:41:36,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3272 states, 3270 states have (on average 1.5143730886850153) internal successors, (4952), 3271 states have internal predecessors, (4952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:36,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3272 states to 3272 states and 4952 transitions. [2024-10-24 02:41:36,999 INFO L78 Accepts]: Start accepts. Automaton has 3272 states and 4952 transitions. Word has length 52 [2024-10-24 02:41:36,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:41:36,999 INFO L471 AbstractCegarLoop]: Abstraction has 3272 states and 4952 transitions. [2024-10-24 02:41:37,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:37,000 INFO L276 IsEmpty]: Start isEmpty. Operand 3272 states and 4952 transitions. [2024-10-24 02:41:37,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-10-24 02:41:37,000 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:41:37,000 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] [2024-10-24 02:41:37,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-24 02:41:37,000 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:41:37,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:41:37,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1851821966, now seen corresponding path program 1 times [2024-10-24 02:41:37,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:41:37,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125285274] [2024-10-24 02:41:37,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:41:37,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:41:37,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:41:37,050 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:41:37,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:41:37,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125285274] [2024-10-24 02:41:37,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125285274] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:41:37,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:41:37,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:41:37,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689755649] [2024-10-24 02:41:37,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:41:37,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:41:37,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:41:37,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:41:37,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:41:37,052 INFO L87 Difference]: Start difference. First operand 3272 states and 4952 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:37,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:41:37,084 INFO L93 Difference]: Finished difference Result 4140 states and 6178 transitions. [2024-10-24 02:41:37,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:41:37,084 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-10-24 02:41:37,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:41:37,089 INFO L225 Difference]: With dead ends: 4140 [2024-10-24 02:41:37,089 INFO L226 Difference]: Without dead ends: 2410 [2024-10-24 02:41:37,091 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:41:37,091 INFO L432 NwaCegarLoop]: 1522 mSDtfsCounter, 29 mSDsluCounter, 1483 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3005 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:41:37,091 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3005 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:41:37,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2410 states. [2024-10-24 02:41:37,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2410 to 2408. [2024-10-24 02:41:37,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2408 states, 2406 states have (on average 1.541978387364921) internal successors, (3710), 2407 states have internal predecessors, (3710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:37,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2408 states to 2408 states and 3710 transitions. [2024-10-24 02:41:37,127 INFO L78 Accepts]: Start accepts. Automaton has 2408 states and 3710 transitions. Word has length 53 [2024-10-24 02:41:37,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:41:37,127 INFO L471 AbstractCegarLoop]: Abstraction has 2408 states and 3710 transitions. [2024-10-24 02:41:37,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:37,127 INFO L276 IsEmpty]: Start isEmpty. Operand 2408 states and 3710 transitions. [2024-10-24 02:41:37,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-24 02:41:37,128 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:41:37,128 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] [2024-10-24 02:41:37,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-24 02:41:37,128 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:41:37,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:41:37,129 INFO L85 PathProgramCache]: Analyzing trace with hash -232466016, now seen corresponding path program 1 times [2024-10-24 02:41:37,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:41:37,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028285786] [2024-10-24 02:41:37,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:41:37,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:41:37,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:41:37,178 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:41:37,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:41:37,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028285786] [2024-10-24 02:41:37,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028285786] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:41:37,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:41:37,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:41:37,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391719788] [2024-10-24 02:41:37,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:41:37,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:41:37,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:41:37,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:41:37,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:41:37,180 INFO L87 Difference]: Start difference. First operand 2408 states and 3710 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 02:41:37,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:41:37,205 INFO L93 Difference]: Finished difference Result 2844 states and 4315 transitions. [2024-10-24 02:41:37,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:41:37,205 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 02:41:37,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:41:37,209 INFO L225 Difference]: With dead ends: 2844 [2024-10-24 02:41:37,209 INFO L226 Difference]: Without dead ends: 1978 [2024-10-24 02:41:37,210 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:41:37,210 INFO L432 NwaCegarLoop]: 1515 mSDtfsCounter, 26 mSDsluCounter, 1475 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 2990 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:41:37,211 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 2990 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:41:37,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1978 states. [2024-10-24 02:41:37,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1978 to 1976. [2024-10-24 02:41:37,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1976 states, 1974 states have (on average 1.5694022289766971) internal successors, (3098), 1975 states have internal predecessors, (3098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:37,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1976 states to 1976 states and 3098 transitions. [2024-10-24 02:41:37,238 INFO L78 Accepts]: Start accepts. Automaton has 1976 states and 3098 transitions. Word has length 55 [2024-10-24 02:41:37,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:41:37,238 INFO L471 AbstractCegarLoop]: Abstraction has 1976 states and 3098 transitions. [2024-10-24 02:41:37,239 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 02:41:37,239 INFO L276 IsEmpty]: Start isEmpty. Operand 1976 states and 3098 transitions. [2024-10-24 02:41:37,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-10-24 02:41:37,239 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:41:37,239 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:41:37,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-24 02:41:37,240 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:41:37,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:41:37,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1088629682, now seen corresponding path program 1 times [2024-10-24 02:41:37,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:41:37,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701828771] [2024-10-24 02:41:37,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:41:37,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:41:37,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:41:38,668 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:41:38,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:41:38,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701828771] [2024-10-24 02:41:38,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701828771] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:41:38,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411157068] [2024-10-24 02:41:38,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:41:38,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:41:38,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:41:38,671 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 02:41:38,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 02:41:38,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:41:38,750 INFO L255 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-24 02:41:38,754 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:41:39,081 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:41:39,081 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 02:41:39,596 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:41:39,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411157068] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 02:41:39,597 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 02:41:39,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 25 [2024-10-24 02:41:39,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500629176] [2024-10-24 02:41:39,597 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 02:41:39,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-24 02:41:39,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:41:39,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-24 02:41:39,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=549, Unknown=0, NotChecked=0, Total=650 [2024-10-24 02:41:39,598 INFO L87 Difference]: Start difference. First operand 1976 states and 3098 transitions. Second operand has 26 states, 26 states have (on average 5.384615384615385) internal successors, (140), 25 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:40,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:41:40,010 INFO L93 Difference]: Finished difference Result 2900 states and 4370 transitions. [2024-10-24 02:41:40,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 02:41:40,010 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.384615384615385) internal successors, (140), 25 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-10-24 02:41:40,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:41:40,015 INFO L225 Difference]: With dead ends: 2900 [2024-10-24 02:41:40,015 INFO L226 Difference]: Without dead ends: 2466 [2024-10-24 02:41:40,017 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=298, Invalid=1034, Unknown=0, NotChecked=0, Total=1332 [2024-10-24 02:41:40,018 INFO L432 NwaCegarLoop]: 1484 mSDtfsCounter, 13560 mSDsluCounter, 4605 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13560 SdHoareTripleChecker+Valid, 6089 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 02:41:40,018 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13560 Valid, 6089 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 02:41:40,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2466 states. [2024-10-24 02:41:40,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2466 to 2444. [2024-10-24 02:41:40,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2444 states, 2442 states have (on average 1.522932022932023) internal successors, (3719), 2443 states have internal predecessors, (3719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:40,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2444 states to 2444 states and 3719 transitions. [2024-10-24 02:41:40,070 INFO L78 Accepts]: Start accepts. Automaton has 2444 states and 3719 transitions. Word has length 57 [2024-10-24 02:41:40,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:41:40,070 INFO L471 AbstractCegarLoop]: Abstraction has 2444 states and 3719 transitions. [2024-10-24 02:41:40,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.384615384615385) internal successors, (140), 25 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:40,070 INFO L276 IsEmpty]: Start isEmpty. Operand 2444 states and 3719 transitions. [2024-10-24 02:41:40,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-24 02:41:40,071 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:41:40,071 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:41:40,085 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 02:41:40,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-24 02:41:40,272 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:41:40,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:41:40,273 INFO L85 PathProgramCache]: Analyzing trace with hash 836469665, now seen corresponding path program 1 times [2024-10-24 02:41:40,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:41:40,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539425344] [2024-10-24 02:41:40,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:41:40,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:41:40,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:41:41,352 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:41:41,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:41:41,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539425344] [2024-10-24 02:41:41,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539425344] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:41:41,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109874688] [2024-10-24 02:41:41,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:41:41,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:41:41,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:41:41,354 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 02:41:41,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 02:41:41,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:41:41,428 INFO L255 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-24 02:41:41,429 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:41:41,541 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 02:41:41,541 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 02:41:41,648 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 02:41:41,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109874688] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 02:41:41,649 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 02:41:41,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 18 [2024-10-24 02:41:41,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3778314] [2024-10-24 02:41:41,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 02:41:41,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-24 02:41:41,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:41:41,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-24 02:41:41,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2024-10-24 02:41:41,650 INFO L87 Difference]: Start difference. First operand 2444 states and 3719 transitions. Second operand has 18 states, 18 states have (on average 8.88888888888889) internal successors, (160), 18 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:43,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:41:43,445 INFO L93 Difference]: Finished difference Result 6931 states and 9618 transitions. [2024-10-24 02:41:43,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-10-24 02:41:43,445 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 8.88888888888889) internal successors, (160), 18 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-10-24 02:41:43,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:41:43,453 INFO L225 Difference]: With dead ends: 6931 [2024-10-24 02:41:43,453 INFO L226 Difference]: Without dead ends: 6029 [2024-10-24 02:41:43,456 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1122 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=723, Invalid=3059, Unknown=0, NotChecked=0, Total=3782 [2024-10-24 02:41:43,457 INFO L432 NwaCegarLoop]: 1498 mSDtfsCounter, 16857 mSDsluCounter, 4776 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16857 SdHoareTripleChecker+Valid, 6274 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 02:41:43,457 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16857 Valid, 6274 Invalid, 762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 722 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 02:41:43,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6029 states. [2024-10-24 02:41:43,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6029 to 5893. [2024-10-24 02:41:43,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5893 states, 5891 states have (on average 1.3508742149040909) internal successors, (7958), 5892 states have internal predecessors, (7958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:43,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5893 states to 5893 states and 7958 transitions. [2024-10-24 02:41:43,573 INFO L78 Accepts]: Start accepts. Automaton has 5893 states and 7958 transitions. Word has length 58 [2024-10-24 02:41:43,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:41:43,574 INFO L471 AbstractCegarLoop]: Abstraction has 5893 states and 7958 transitions. [2024-10-24 02:41:43,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.88888888888889) internal successors, (160), 18 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:41:43,574 INFO L276 IsEmpty]: Start isEmpty. Operand 5893 states and 7958 transitions. [2024-10-24 02:41:43,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-24 02:41:43,575 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:41:43,575 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:41:43,589 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-24 02:41:43,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-24 02:41:43,779 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:41:43,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:41:43,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1390462255, now seen corresponding path program 1 times [2024-10-24 02:41:43,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:41:43,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46083661] [2024-10-24 02:41:43,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:41:43,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:41:43,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:41:44,000 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:41:44,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:41:44,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46083661] [2024-10-24 02:41:44,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46083661] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:41:44,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315929039] [2024-10-24 02:41:44,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:41:44,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:41:44,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:41:44,002 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 02:41:44,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 02:41:44,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:41:44,084 INFO L255 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-10-24 02:41:44,086 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:41:46,262 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:41:46,262 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 02:41:47,564 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:41:47,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [315929039] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 02:41:47,565 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 02:41:47,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 17, 17] total 40 [2024-10-24 02:41:47,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574429700] [2024-10-24 02:41:47,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 02:41:47,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-10-24 02:41:47,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:41:47,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-10-24 02:41:47,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=1378, Unknown=0, NotChecked=0, Total=1560 [2024-10-24 02:41:47,567 INFO L87 Difference]: Start difference. First operand 5893 states and 7958 transitions. Second operand has 40 states, 40 states have (on average 3.875) internal successors, (155), 40 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:42:03,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:42:03,963 INFO L93 Difference]: Finished difference Result 18507 states and 24135 transitions. [2024-10-24 02:42:03,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2024-10-24 02:42:03,964 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.875) internal successors, (155), 40 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-10-24 02:42:03,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:42:03,981 INFO L225 Difference]: With dead ends: 18507 [2024-10-24 02:42:03,981 INFO L226 Difference]: Without dead ends: 14462 [2024-10-24 02:42:03,991 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11085 ImplicationChecksByTransitivity, 15.5s TimeCoverageRelationStatistics Valid=5515, Invalid=23897, Unknown=0, NotChecked=0, Total=29412 [2024-10-24 02:42:03,992 INFO L432 NwaCegarLoop]: 1536 mSDtfsCounter, 16809 mSDsluCounter, 22230 mSDsCounter, 0 mSdLazyCounter, 2139 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16809 SdHoareTripleChecker+Valid, 23766 SdHoareTripleChecker+Invalid, 2243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 2139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-24 02:42:03,992 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16809 Valid, 23766 Invalid, 2243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 2139 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-24 02:42:04,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14462 states. [2024-10-24 02:42:04,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14462 to 11512. [2024-10-24 02:42:04,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11512 states, 11510 states have (on average 1.3112945264986968) internal successors, (15093), 11511 states have internal predecessors, (15093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:42:04,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11512 states to 11512 states and 15093 transitions. [2024-10-24 02:42:04,352 INFO L78 Accepts]: Start accepts. Automaton has 11512 states and 15093 transitions. Word has length 58 [2024-10-24 02:42:04,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:42:04,352 INFO L471 AbstractCegarLoop]: Abstraction has 11512 states and 15093 transitions. [2024-10-24 02:42:04,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.875) internal successors, (155), 40 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:42:04,353 INFO L276 IsEmpty]: Start isEmpty. Operand 11512 states and 15093 transitions. [2024-10-24 02:42:04,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-10-24 02:42:04,353 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:42:04,354 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] [2024-10-24 02:42:04,366 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 02:42:04,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:42:04,558 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:42:04,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:42:04,559 INFO L85 PathProgramCache]: Analyzing trace with hash -389434110, now seen corresponding path program 1 times [2024-10-24 02:42:04,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:42:04,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660944017] [2024-10-24 02:42:04,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:42:04,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:42:04,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:42:04,788 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:42:04,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:42:04,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660944017] [2024-10-24 02:42:04,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660944017] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:42:04,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382298966] [2024-10-24 02:42:04,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:42:04,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:42:04,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:42:04,791 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 02:42:04,792 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 02:42:04,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:42:04,887 INFO L255 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-10-24 02:42:04,889 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:42:06,891 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:42:06,891 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 02:42:09,415 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:42:09,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382298966] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 02:42:09,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 02:42:09,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 19, 22] total 45 [2024-10-24 02:42:09,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523227653] [2024-10-24 02:42:09,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 02:42:09,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-10-24 02:42:09,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:42:09,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-10-24 02:42:09,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=316, Invalid=1664, Unknown=0, NotChecked=0, Total=1980 [2024-10-24 02:42:09,418 INFO L87 Difference]: Start difference. First operand 11512 states and 15093 transitions. Second operand has 45 states, 45 states have (on average 3.466666666666667) internal successors, (156), 45 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:42:18,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:42:18,613 INFO L93 Difference]: Finished difference Result 20678 states and 26641 transitions. [2024-10-24 02:42:18,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2024-10-24 02:42:18,615 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.466666666666667) internal successors, (156), 45 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-10-24 02:42:18,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:42:18,627 INFO L225 Difference]: With dead ends: 20678 [2024-10-24 02:42:18,627 INFO L226 Difference]: Without dead ends: 11096 [2024-10-24 02:42:18,638 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3560 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=3133, Invalid=9749, Unknown=0, NotChecked=0, Total=12882 [2024-10-24 02:42:18,638 INFO L432 NwaCegarLoop]: 1544 mSDtfsCounter, 20273 mSDsluCounter, 16130 mSDsCounter, 0 mSdLazyCounter, 1929 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20273 SdHoareTripleChecker+Valid, 17674 SdHoareTripleChecker+Invalid, 2000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-24 02:42:18,639 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20273 Valid, 17674 Invalid, 2000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1929 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-24 02:42:18,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11096 states. [2024-10-24 02:42:19,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11096 to 10618. [2024-10-24 02:42:19,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10618 states, 10616 states have (on average 1.308779201205727) internal successors, (13894), 10617 states have internal predecessors, (13894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:42:19,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10618 states to 10618 states and 13894 transitions. [2024-10-24 02:42:19,040 INFO L78 Accepts]: Start accepts. Automaton has 10618 states and 13894 transitions. Word has length 59 [2024-10-24 02:42:19,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:42:19,041 INFO L471 AbstractCegarLoop]: Abstraction has 10618 states and 13894 transitions. [2024-10-24 02:42:19,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.466666666666667) internal successors, (156), 45 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:42:19,041 INFO L276 IsEmpty]: Start isEmpty. Operand 10618 states and 13894 transitions. [2024-10-24 02:42:19,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-10-24 02:42:19,042 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:42:19,042 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:42:19,055 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 02:42:19,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:42:19,247 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:42:19,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:42:19,247 INFO L85 PathProgramCache]: Analyzing trace with hash -128125831, now seen corresponding path program 1 times [2024-10-24 02:42:19,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:42:19,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915504133] [2024-10-24 02:42:19,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:42:19,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:42:19,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:42:19,300 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:42:19,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:42:19,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915504133] [2024-10-24 02:42:19,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915504133] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:42:19,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:42:19,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:42:19,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012687530] [2024-10-24 02:42:19,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:42:19,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:42:19,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:42:19,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:42:19,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:42:19,302 INFO L87 Difference]: Start difference. First operand 10618 states and 13894 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:42:21,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:42:21,851 INFO L93 Difference]: Finished difference Result 13624 states and 18821 transitions. [2024-10-24 02:42:21,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:42:21,851 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 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 02:42:21,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:42:21,863 INFO L225 Difference]: With dead ends: 13624 [2024-10-24 02:42:21,863 INFO L226 Difference]: Without dead ends: 12120 [2024-10-24 02:42:21,866 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 02:42:21,866 INFO L432 NwaCegarLoop]: 1215 mSDtfsCounter, 753 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 2417 mSolverCounterSat, 681 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 1290 SdHoareTripleChecker+Invalid, 3098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 681 IncrementalHoareTripleChecker+Valid, 2417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-10-24 02:42:21,866 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [753 Valid, 1290 Invalid, 3098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [681 Valid, 2417 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-10-24 02:42:21,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12120 states. [2024-10-24 02:42:22,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12120 to 12120. [2024-10-24 02:42:22,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12120 states, 12118 states have (on average 1.3244759861363262) internal successors, (16050), 12119 states have internal predecessors, (16050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:42:22,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12120 states to 12120 states and 16050 transitions. [2024-10-24 02:42:22,238 INFO L78 Accepts]: Start accepts. Automaton has 12120 states and 16050 transitions. Word has length 86 [2024-10-24 02:42:22,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:42:22,238 INFO L471 AbstractCegarLoop]: Abstraction has 12120 states and 16050 transitions. [2024-10-24 02:42:22,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:42:22,239 INFO L276 IsEmpty]: Start isEmpty. Operand 12120 states and 16050 transitions. [2024-10-24 02:42:22,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-10-24 02:42:22,240 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:42:22,240 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:42:22,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-24 02:42:22,241 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:42:22,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:42:22,241 INFO L85 PathProgramCache]: Analyzing trace with hash -2072546124, now seen corresponding path program 1 times [2024-10-24 02:42:22,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:42:22,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877533483] [2024-10-24 02:42:22,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:42:22,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:42:22,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:42:22,293 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:42:22,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:42:22,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877533483] [2024-10-24 02:42:22,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877533483] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:42:22,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:42:22,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 02:42:22,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190069537] [2024-10-24 02:42:22,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:42:22,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:42:22,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:42:22,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:42:22,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:42:22,295 INFO L87 Difference]: Start difference. First operand 12120 states and 16050 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:42:24,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:42:24,818 INFO L93 Difference]: Finished difference Result 18132 states and 25290 transitions. [2024-10-24 02:42:24,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:42:24,820 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2024-10-24 02:42:24,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:42:24,834 INFO L225 Difference]: With dead ends: 18132 [2024-10-24 02:42:24,834 INFO L226 Difference]: Without dead ends: 15126 [2024-10-24 02:42:24,839 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:42:24,840 INFO L432 NwaCegarLoop]: 559 mSDtfsCounter, 796 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2275 mSolverCounterSat, 651 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 796 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 2926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 651 IncrementalHoareTripleChecker+Valid, 2275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-10-24 02:42:24,840 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [796 Valid, 566 Invalid, 2926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [651 Valid, 2275 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-10-24 02:42:24,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15126 states. [2024-10-24 02:42:25,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15126 to 15124. [2024-10-24 02:42:25,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15124 states, 15122 states have (on average 1.2981748445972754) internal successors, (19631), 15123 states have internal predecessors, (19631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:42:25,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15124 states to 15124 states and 19631 transitions. [2024-10-24 02:42:25,284 INFO L78 Accepts]: Start accepts. Automaton has 15124 states and 19631 transitions. Word has length 89 [2024-10-24 02:42:25,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:42:25,284 INFO L471 AbstractCegarLoop]: Abstraction has 15124 states and 19631 transitions. [2024-10-24 02:42:25,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:42:25,284 INFO L276 IsEmpty]: Start isEmpty. Operand 15124 states and 19631 transitions. [2024-10-24 02:42:25,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-10-24 02:42:25,285 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:42:25,285 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:42:25,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-24 02:42:25,286 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:42:25,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:42:25,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1015921533, now seen corresponding path program 1 times [2024-10-24 02:42:25,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:42:25,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952203924] [2024-10-24 02:42:25,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:42:25,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:42:25,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:42:25,335 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:42:25,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:42:25,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952203924] [2024-10-24 02:42:25,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952203924] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:42:25,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:42:25,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 02:42:25,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299429635] [2024-10-24 02:42:25,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:42:25,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:42:25,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:42:25,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:42:25,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:42:25,336 INFO L87 Difference]: Start difference. First operand 15124 states and 19631 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:42:27,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:42:27,946 INFO L93 Difference]: Finished difference Result 27144 states and 36033 transitions. [2024-10-24 02:42:27,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:42:27,946 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2024-10-24 02:42:27,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:42:27,964 INFO L225 Difference]: With dead ends: 27144 [2024-10-24 02:42:27,964 INFO L226 Difference]: Without dead ends: 21134 [2024-10-24 02:42:27,971 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:42:27,971 INFO L432 NwaCegarLoop]: 654 mSDtfsCounter, 985 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2390 mSolverCounterSat, 550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 985 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 2940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 2390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-10-24 02:42:27,971 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [985 Valid, 661 Invalid, 2940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 2390 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-10-24 02:42:27,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21134 states. [2024-10-24 02:42:28,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21134 to 21132. [2024-10-24 02:42:28,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21132 states, 21130 states have (on average 1.268575485092286) internal successors, (26805), 21131 states have internal predecessors, (26805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:42:28,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21132 states to 21132 states and 26805 transitions. [2024-10-24 02:42:28,400 INFO L78 Accepts]: Start accepts. Automaton has 21132 states and 26805 transitions. Word has length 90 [2024-10-24 02:42:28,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:42:28,400 INFO L471 AbstractCegarLoop]: Abstraction has 21132 states and 26805 transitions. [2024-10-24 02:42:28,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:42:28,400 INFO L276 IsEmpty]: Start isEmpty. Operand 21132 states and 26805 transitions. [2024-10-24 02:42:28,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-10-24 02:42:28,402 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:42:28,402 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:42:28,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-24 02:42:28,403 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:42:28,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:42:28,403 INFO L85 PathProgramCache]: Analyzing trace with hash -452363845, now seen corresponding path program 1 times [2024-10-24 02:42:28,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:42:28,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960645529] [2024-10-24 02:42:28,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:42:28,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:42:28,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:42:29,193 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 36 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:42:29,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:42:29,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960645529] [2024-10-24 02:42:29,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960645529] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:42:29,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722241767] [2024-10-24 02:42:29,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:42:29,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:42:29,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:42:29,196 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 02:42:29,197 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 02:42:29,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:42:29,294 INFO L255 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-24 02:42:29,297 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:42:29,890 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 30 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:42:29,890 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 02:42:31,165 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 28 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:42:31,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722241767] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 02:42:31,165 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 02:42:31,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 34 [2024-10-24 02:42:31,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161714711] [2024-10-24 02:42:31,165 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 02:42:31,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-10-24 02:42:31,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:42:31,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-10-24 02:42:31,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1075, Unknown=0, NotChecked=0, Total=1190 [2024-10-24 02:42:31,167 INFO L87 Difference]: Start difference. First operand 21132 states and 26805 transitions. Second operand has 35 states, 35 states have (on average 7.485714285714286) internal successors, (262), 34 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:42:36,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:42:36,900 INFO L93 Difference]: Finished difference Result 34622 states and 43944 transitions. [2024-10-24 02:42:36,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2024-10-24 02:42:36,901 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 7.485714285714286) internal successors, (262), 34 states have internal predecessors, (262), 0 states have call successors, (0), 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 97 [2024-10-24 02:42:36,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:42:36,926 INFO L225 Difference]: With dead ends: 34622 [2024-10-24 02:42:36,927 INFO L226 Difference]: Without dead ends: 27612 [2024-10-24 02:42:36,939 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5894 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=3283, Invalid=16457, Unknown=0, NotChecked=0, Total=19740 [2024-10-24 02:42:36,940 INFO L432 NwaCegarLoop]: 1542 mSDtfsCounter, 28755 mSDsluCounter, 16275 mSDsCounter, 0 mSdLazyCounter, 2007 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28755 SdHoareTripleChecker+Valid, 17817 SdHoareTripleChecker+Invalid, 2078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 2007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-24 02:42:36,940 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28755 Valid, 17817 Invalid, 2078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 2007 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-24 02:42:36,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27612 states. [2024-10-24 02:42:37,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27612 to 18050. [2024-10-24 02:42:37,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18050 states, 18048 states have (on average 1.266622340425532) internal successors, (22860), 18049 states have internal predecessors, (22860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:42:37,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18050 states to 18050 states and 22860 transitions. [2024-10-24 02:42:37,427 INFO L78 Accepts]: Start accepts. Automaton has 18050 states and 22860 transitions. Word has length 97 [2024-10-24 02:42:37,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:42:37,427 INFO L471 AbstractCegarLoop]: Abstraction has 18050 states and 22860 transitions. [2024-10-24 02:42:37,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 7.485714285714286) internal successors, (262), 34 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:42:37,427 INFO L276 IsEmpty]: Start isEmpty. Operand 18050 states and 22860 transitions. [2024-10-24 02:42:37,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-10-24 02:42:37,429 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:42:37,429 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:42:37,442 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-24 02:42:37,629 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,SelfDestructingSolverStorable23 [2024-10-24 02:42:37,630 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:42:37,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:42:37,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1863416823, now seen corresponding path program 1 times [2024-10-24 02:42:37,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:42:37,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333692914] [2024-10-24 02:42:37,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:42:37,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:42:37,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:42:38,515 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 53 proven. 6 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-10-24 02:42:38,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:42:38,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333692914] [2024-10-24 02:42:38,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333692914] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:42:38,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57196450] [2024-10-24 02:42:38,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:42:38,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:42:38,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:42:38,517 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 02:42:38,518 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 02:42:38,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:42:38,601 INFO L255 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-24 02:42:38,607 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:42:39,145 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 15 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:42:39,146 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 02:42:40,347 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 13 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:42:40,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57196450] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 02:42:40,347 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 02:42:40,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 11, 11] total 39 [2024-10-24 02:42:40,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881030427] [2024-10-24 02:42:40,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 02:42:40,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-10-24 02:42:40,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:42:40,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-10-24 02:42:40,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=1419, Unknown=0, NotChecked=0, Total=1560 [2024-10-24 02:42:40,349 INFO L87 Difference]: Start difference. First operand 18050 states and 22860 transitions. Second operand has 40 states, 40 states have (on average 6.625) internal successors, (265), 39 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:42:46,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:42:46,778 INFO L93 Difference]: Finished difference Result 24807 states and 31328 transitions. [2024-10-24 02:42:46,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2024-10-24 02:42:46,778 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 6.625) internal successors, (265), 39 states have internal predecessors, (265), 0 states have call successors, (0), 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 97 [2024-10-24 02:42:46,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:42:46,796 INFO L225 Difference]: With dead ends: 24807 [2024-10-24 02:42:46,796 INFO L226 Difference]: Without dead ends: 20845 [2024-10-24 02:42:46,803 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3551 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=2527, Invalid=11993, Unknown=0, NotChecked=0, Total=14520 [2024-10-24 02:42:46,804 INFO L432 NwaCegarLoop]: 1585 mSDtfsCounter, 28276 mSDsluCounter, 19702 mSDsCounter, 0 mSdLazyCounter, 2376 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28276 SdHoareTripleChecker+Valid, 21287 SdHoareTripleChecker+Invalid, 2475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 2376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:42:46,804 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28276 Valid, 21287 Invalid, 2475 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [99 Valid, 2376 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-24 02:42:46,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20845 states. [2024-10-24 02:42:47,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20845 to 16687. [2024-10-24 02:42:47,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16687 states, 16685 states have (on average 1.2654480071920886) internal successors, (21114), 16686 states have internal predecessors, (21114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:42:47,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16687 states to 16687 states and 21114 transitions. [2024-10-24 02:42:47,189 INFO L78 Accepts]: Start accepts. Automaton has 16687 states and 21114 transitions. Word has length 97 [2024-10-24 02:42:47,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:42:47,189 INFO L471 AbstractCegarLoop]: Abstraction has 16687 states and 21114 transitions. [2024-10-24 02:42:47,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 6.625) internal successors, (265), 39 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:42:47,190 INFO L276 IsEmpty]: Start isEmpty. Operand 16687 states and 21114 transitions. [2024-10-24 02:42:47,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-10-24 02:42:47,191 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:42:47,191 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-24 02:42:47,204 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-24 02:42:47,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:42:47,392 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:42:47,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:42:47,392 INFO L85 PathProgramCache]: Analyzing trace with hash 2068766811, now seen corresponding path program 1 times [2024-10-24 02:42:47,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:42:47,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917284026] [2024-10-24 02:42:47,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:42:47,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:42:47,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:42:48,346 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 13 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:42:48,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:42:48,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917284026] [2024-10-24 02:42:48,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917284026] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:42:48,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627882914] [2024-10-24 02:42:48,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:42:48,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:42:48,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:42:48,348 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 02:42:48,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-24 02:42:48,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:42:48,432 INFO L255 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-24 02:42:48,434 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:42:49,085 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 42 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:42:49,086 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 02:42:50,326 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 33 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:42:50,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627882914] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 02:42:50,327 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 02:42:50,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 13, 11] total 42 [2024-10-24 02:42:50,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294330024] [2024-10-24 02:42:50,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 02:42:50,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-10-24 02:42:50,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:42:50,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-10-24 02:42:50,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1582, Unknown=0, NotChecked=0, Total=1722 [2024-10-24 02:42:50,328 INFO L87 Difference]: Start difference. First operand 16687 states and 21114 transitions. Second operand has 42 states, 42 states have (on average 6.476190476190476) internal successors, (272), 42 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)