./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label01.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label01.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 cbac78224547ffded4eea2a5da15a43fb2fd2b6c73f073f7e365339f5e128336 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 02:47:38,252 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 02:47:38,309 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 02:47:38,313 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 02:47:38,314 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 02:47:38,331 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 02:47:38,335 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 02:47:38,335 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 02:47:38,335 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 02:47:38,336 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 02:47:38,336 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 02:47:38,336 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 02:47:38,336 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 02:47:38,337 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 02:47:38,337 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 02:47:38,337 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 02:47:38,338 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 02:47:38,338 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 02:47:38,339 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 02:47:38,339 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 02:47:38,342 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 02:47:38,343 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 02:47:38,343 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 02:47:38,343 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 02:47:38,343 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 02:47:38,343 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 02:47:38,343 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 02:47:38,344 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 02:47:38,344 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 02:47:38,344 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 02:47:38,344 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 02:47:38,344 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 02:47:38,344 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 02:47:38,344 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 02:47:38,345 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 02:47:38,345 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 02:47:38,345 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 02:47:38,345 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 02:47:38,345 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 02:47:38,345 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 02:47:38,345 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 02:47:38,346 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 02:47:38,346 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cbac78224547ffded4eea2a5da15a43fb2fd2b6c73f073f7e365339f5e128336 [2024-10-24 02:47:38,545 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 02:47:38,565 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 02:47:38,567 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 02:47:38,568 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 02:47:38,568 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 02:47:38,569 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label01.c [2024-10-24 02:47:39,788 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 02:47:40,114 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 02:47:40,115 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label01.c [2024-10-24 02:47:40,142 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9052ed156/73a1ef6e86704b3a849f5472c62b1a69/FLAGda355f3a0 [2024-10-24 02:47:40,156 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9052ed156/73a1ef6e86704b3a849f5472c62b1a69 [2024-10-24 02:47:40,158 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 02:47:40,159 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 02:47:40,160 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 02:47:40,162 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 02:47:40,166 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 02:47:40,167 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:47:40" (1/1) ... [2024-10-24 02:47:40,167 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e17427d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:47:40, skipping insertion in model container [2024-10-24 02:47:40,168 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:47:40" (1/1) ... [2024-10-24 02:47:40,292 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 02:47:40,508 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label01.c[11640,11653] [2024-10-24 02:47:40,534 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label01.c[17195,17208] [2024-10-24 02:47:41,023 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 02:47:41,033 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 02:47:41,103 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label01.c[11640,11653] [2024-10-24 02:47:41,111 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label01.c[17195,17208] [2024-10-24 02:47:41,374 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 02:47:41,428 INFO L204 MainTranslator]: Completed translation [2024-10-24 02:47:41,429 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:47:41 WrapperNode [2024-10-24 02:47:41,429 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 02:47:41,430 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 02:47:41,430 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 02:47:41,430 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 02:47:41,435 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:47:41" (1/1) ... [2024-10-24 02:47:41,468 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:47:41" (1/1) ... [2024-10-24 02:47:41,677 INFO L138 Inliner]: procedures = 36, calls = 22, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 5099 [2024-10-24 02:47:41,678 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 02:47:41,679 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 02:47:41,679 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 02:47:41,679 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 02:47:41,687 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:47:41" (1/1) ... [2024-10-24 02:47:41,688 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:47:41" (1/1) ... [2024-10-24 02:47:41,727 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:47:41" (1/1) ... [2024-10-24 02:47:41,852 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-24 02:47:41,852 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:47:41" (1/1) ... [2024-10-24 02:47:41,852 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:47:41" (1/1) ... [2024-10-24 02:47:41,941 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:47:41" (1/1) ... [2024-10-24 02:47:41,963 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:47:41" (1/1) ... [2024-10-24 02:47:41,986 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:47:41" (1/1) ... [2024-10-24 02:47:42,000 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:47:41" (1/1) ... [2024-10-24 02:47:42,039 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 02:47:42,041 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 02:47:42,041 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 02:47:42,041 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 02:47:42,042 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:47:41" (1/1) ... [2024-10-24 02:47:42,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 02:47:42,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:47:42,068 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 02:47:42,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 02:47:42,101 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 02:47:42,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 02:47:42,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 02:47:42,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 02:47:42,184 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 02:47:42,186 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 02:47:45,226 INFO L? ?]: Removed 744 outVars from TransFormulas that were not future-live. [2024-10-24 02:47:45,226 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 02:47:45,272 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 02:47:45,272 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-24 02:47:45,273 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:47:45 BoogieIcfgContainer [2024-10-24 02:47:45,273 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 02:47:45,275 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 02:47:45,275 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 02:47:45,277 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 02:47:45,277 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:47:40" (1/3) ... [2024-10-24 02:47:45,278 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26122f4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:47:45, skipping insertion in model container [2024-10-24 02:47:45,278 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:47:41" (2/3) ... [2024-10-24 02:47:45,278 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26122f4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:47:45, skipping insertion in model container [2024-10-24 02:47:45,278 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:47:45" (3/3) ... [2024-10-24 02:47:45,279 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label01.c [2024-10-24 02:47:45,291 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 02:47:45,292 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-24 02:47:45,356 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 02:47:45,361 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;@3c02b05a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 02:47:45,361 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-24 02:47:45,371 INFO L276 IsEmpty]: Start isEmpty. Operand has 834 states, 831 states have (on average 1.9759326113116726) internal successors, (1642), 833 states have internal predecessors, (1642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:45,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-10-24 02:47:45,378 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:47:45,378 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:47:45,379 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:47:45,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:47:45,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1603356568, now seen corresponding path program 1 times [2024-10-24 02:47:45,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:47:45,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084379763] [2024-10-24 02:47:45,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:47:45,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:47:45,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:47:45,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:47:45,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:47:45,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084379763] [2024-10-24 02:47:45,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084379763] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:47:45,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:47:45,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 02:47:45,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998534833] [2024-10-24 02:47:45,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:47:45,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-24 02:47:45,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:47:45,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-24 02:47:45,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 02:47:45,669 INFO L87 Difference]: Start difference. First operand has 834 states, 831 states have (on average 1.9759326113116726) internal successors, (1642), 833 states have internal predecessors, (1642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:45,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:47:45,755 INFO L93 Difference]: Finished difference Result 1633 states and 3216 transitions. [2024-10-24 02:47:45,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-24 02:47:45,758 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-10-24 02:47:45,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:47:45,777 INFO L225 Difference]: With dead ends: 1633 [2024-10-24 02:47:45,778 INFO L226 Difference]: Without dead ends: 830 [2024-10-24 02:47:45,784 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 02:47:45,786 INFO L432 NwaCegarLoop]: 1571 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1571 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:47:45,788 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1571 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:47:45,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2024-10-24 02:47:45,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 830. [2024-10-24 02:47:45,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 828 states have (on average 1.8973429951690821) internal successors, (1571), 829 states have internal predecessors, (1571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:45,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 1571 transitions. [2024-10-24 02:47:45,853 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 1571 transitions. Word has length 21 [2024-10-24 02:47:45,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:47:45,853 INFO L471 AbstractCegarLoop]: Abstraction has 830 states and 1571 transitions. [2024-10-24 02:47:45,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:45,853 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 1571 transitions. [2024-10-24 02:47:45,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-10-24 02:47:45,855 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:47:45,855 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:47:45,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 02:47:45,855 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:47:45,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:47:45,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1103262826, now seen corresponding path program 1 times [2024-10-24 02:47:45,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:47:45,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70796517] [2024-10-24 02:47:45,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:47:45,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:47:45,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:47:45,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:47:45,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:47:45,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70796517] [2024-10-24 02:47:45,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70796517] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:47:45,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:47:45,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 02:47:45,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922981353] [2024-10-24 02:47:45,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:47:45,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 02:47:45,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:47:45,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 02:47:45,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 02:47:45,998 INFO L87 Difference]: Start difference. First operand 830 states and 1571 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:46,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:47:46,060 INFO L93 Difference]: Finished difference Result 874 states and 1640 transitions. [2024-10-24 02:47:46,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 02:47:46,060 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-10-24 02:47:46,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:47:46,063 INFO L225 Difference]: With dead ends: 874 [2024-10-24 02:47:46,063 INFO L226 Difference]: Without dead ends: 830 [2024-10-24 02:47:46,064 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 02:47:46,065 INFO L432 NwaCegarLoop]: 1568 mSDtfsCounter, 0 mSDsluCounter, 3101 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4669 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:47:46,065 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4669 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:47:46,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2024-10-24 02:47:46,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 830. [2024-10-24 02:47:46,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 828 states have (on average 1.8599033816425121) internal successors, (1540), 829 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:46,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 1540 transitions. [2024-10-24 02:47:46,078 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 1540 transitions. Word has length 21 [2024-10-24 02:47:46,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:47:46,078 INFO L471 AbstractCegarLoop]: Abstraction has 830 states and 1540 transitions. [2024-10-24 02:47:46,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:46,079 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 1540 transitions. [2024-10-24 02:47:46,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-10-24 02:47:46,083 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:47:46,083 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:47:46,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 02:47:46,084 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:47:46,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:47:46,084 INFO L85 PathProgramCache]: Analyzing trace with hash -364061020, now seen corresponding path program 1 times [2024-10-24 02:47:46,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:47:46,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054296628] [2024-10-24 02:47:46,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:47:46,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:47:46,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:47:46,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:47:46,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:47:46,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054296628] [2024-10-24 02:47:46,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054296628] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:47:46,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:47:46,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 02:47:46,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799207338] [2024-10-24 02:47:46,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:47:46,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:47:46,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:47:46,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:47:46,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:47:46,158 INFO L87 Difference]: Start difference. First operand 830 states and 1540 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 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 02:47:48,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:47:48,913 INFO L93 Difference]: Finished difference Result 2334 states and 4413 transitions. [2024-10-24 02:47:48,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:47:48,914 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 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 47 [2024-10-24 02:47:48,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:47:48,919 INFO L225 Difference]: With dead ends: 2334 [2024-10-24 02:47:48,919 INFO L226 Difference]: Without dead ends: 1581 [2024-10-24 02:47:48,920 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 02:47:48,921 INFO L432 NwaCegarLoop]: 168 mSDtfsCounter, 869 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2280 mSolverCounterSat, 998 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 869 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 3278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 998 IncrementalHoareTripleChecker+Valid, 2280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-10-24 02:47:48,922 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [869 Valid, 175 Invalid, 3278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [998 Valid, 2280 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-10-24 02:47:48,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1581 states. [2024-10-24 02:47:48,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1581 to 1581. [2024-10-24 02:47:48,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1581 states, 1579 states have (on average 1.8461051298290057) internal successors, (2915), 1580 states have internal predecessors, (2915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:48,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 2915 transitions. [2024-10-24 02:47:48,952 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 2915 transitions. Word has length 47 [2024-10-24 02:47:48,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:47:48,953 INFO L471 AbstractCegarLoop]: Abstraction has 1581 states and 2915 transitions. [2024-10-24 02:47:48,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 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 02:47:48,953 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 2915 transitions. [2024-10-24 02:47:48,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-10-24 02:47:48,954 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:47:48,954 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:47:48,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 02:47:48,955 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:47:48,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:47:48,956 INFO L85 PathProgramCache]: Analyzing trace with hash 51546625, now seen corresponding path program 1 times [2024-10-24 02:47:48,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:47:48,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809343306] [2024-10-24 02:47:48,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:47:48,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:47:48,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:47:49,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:47:49,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:47:49,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809343306] [2024-10-24 02:47:49,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809343306] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:47:49,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:47:49,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 02:47:49,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871661136] [2024-10-24 02:47:49,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:47:49,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 02:47:49,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:47:49,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 02:47:49,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:47:49,121 INFO L87 Difference]: Start difference. First operand 1581 states and 2915 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:49,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:47:49,332 INFO L93 Difference]: Finished difference Result 1991 states and 3575 transitions. [2024-10-24 02:47:49,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-24 02:47:49,333 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2024-10-24 02:47:49,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:47:49,339 INFO L225 Difference]: With dead ends: 1991 [2024-10-24 02:47:49,340 INFO L226 Difference]: Without dead ends: 1950 [2024-10-24 02:47:49,340 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2024-10-24 02:47:49,341 INFO L432 NwaCegarLoop]: 1533 mSDtfsCounter, 7933 mSDsluCounter, 1167 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7933 SdHoareTripleChecker+Valid, 2700 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 02:47:49,341 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7933 Valid, 2700 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 02:47:49,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1950 states. [2024-10-24 02:47:49,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1950 to 1620. [2024-10-24 02:47:49,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1620 states, 1618 states have (on average 1.8405438813349815) internal successors, (2978), 1619 states have internal predecessors, (2978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:49,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1620 states to 1620 states and 2978 transitions. [2024-10-24 02:47:49,370 INFO L78 Accepts]: Start accepts. Automaton has 1620 states and 2978 transitions. Word has length 51 [2024-10-24 02:47:49,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:47:49,370 INFO L471 AbstractCegarLoop]: Abstraction has 1620 states and 2978 transitions. [2024-10-24 02:47:49,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:49,370 INFO L276 IsEmpty]: Start isEmpty. Operand 1620 states and 2978 transitions. [2024-10-24 02:47:49,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-10-24 02:47:49,372 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:47:49,372 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:47:49,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 02:47:49,372 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:47:49,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:47:49,372 INFO L85 PathProgramCache]: Analyzing trace with hash 2145916561, now seen corresponding path program 1 times [2024-10-24 02:47:49,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:47:49,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272779413] [2024-10-24 02:47:49,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:47:49,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:47:49,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:47:49,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:47:49,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:47:49,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272779413] [2024-10-24 02:47:49,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272779413] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:47:49,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:47:49,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:47:49,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576871911] [2024-10-24 02:47:49,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:47:49,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:47:49,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:47:49,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:47:49,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:47:49,418 INFO L87 Difference]: Start difference. First operand 1620 states and 2978 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:49,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:47:49,447 INFO L93 Difference]: Finished difference Result 1769 states and 3217 transitions. [2024-10-24 02:47:49,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:47:49,447 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-10-24 02:47:49,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:47:49,452 INFO L225 Difference]: With dead ends: 1769 [2024-10-24 02:47:49,452 INFO L226 Difference]: Without dead ends: 1689 [2024-10-24 02:47:49,453 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:47:49,454 INFO L432 NwaCegarLoop]: 1535 mSDtfsCounter, 1480 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 1595 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:47:49,454 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 1595 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:47:49,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1689 states. [2024-10-24 02:47:49,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1689 to 1687. [2024-10-24 02:47:49,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1687 states, 1685 states have (on average 1.83026706231454) internal successors, (3084), 1686 states have internal predecessors, (3084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:49,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 3084 transitions. [2024-10-24 02:47:49,480 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 3084 transitions. Word has length 53 [2024-10-24 02:47:49,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:47:49,481 INFO L471 AbstractCegarLoop]: Abstraction has 1687 states and 3084 transitions. [2024-10-24 02:47:49,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:49,481 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 3084 transitions. [2024-10-24 02:47:49,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-10-24 02:47:49,482 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:47:49,482 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:47:49,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 02:47:49,482 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:47:49,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:47:49,483 INFO L85 PathProgramCache]: Analyzing trace with hash -2146905783, now seen corresponding path program 1 times [2024-10-24 02:47:49,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:47:49,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140697199] [2024-10-24 02:47:49,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:47:49,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:47:49,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:47:49,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:47:49,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:47:49,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140697199] [2024-10-24 02:47:49,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140697199] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:47:49,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:47:49,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 02:47:49,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856578146] [2024-10-24 02:47:49,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:47:49,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 02:47:49,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:47:49,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 02:47:49,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:47:49,710 INFO L87 Difference]: Start difference. First operand 1687 states and 3084 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:49,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:47:49,849 INFO L93 Difference]: Finished difference Result 1836 states and 3320 transitions. [2024-10-24 02:47:49,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 02:47:49,850 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-10-24 02:47:49,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:47:49,856 INFO L225 Difference]: With dead ends: 1836 [2024-10-24 02:47:49,856 INFO L226 Difference]: Without dead ends: 1689 [2024-10-24 02:47:49,857 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2024-10-24 02:47:49,858 INFO L432 NwaCegarLoop]: 1530 mSDtfsCounter, 4473 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4473 SdHoareTripleChecker+Valid, 1778 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:47:49,858 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4473 Valid, 1778 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:47:49,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1689 states. [2024-10-24 02:47:49,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1689 to 1687. [2024-10-24 02:47:49,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1687 states, 1685 states have (on average 1.829080118694362) internal successors, (3082), 1686 states have internal predecessors, (3082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:49,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 3082 transitions. [2024-10-24 02:47:49,885 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 3082 transitions. Word has length 53 [2024-10-24 02:47:49,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:47:49,885 INFO L471 AbstractCegarLoop]: Abstraction has 1687 states and 3082 transitions. [2024-10-24 02:47:49,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:49,886 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 3082 transitions. [2024-10-24 02:47:49,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-10-24 02:47:49,886 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:47:49,886 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:47:49,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 02:47:49,887 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:47:49,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:47:49,887 INFO L85 PathProgramCache]: Analyzing trace with hash 2036322024, now seen corresponding path program 1 times [2024-10-24 02:47:49,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:47:49,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116450080] [2024-10-24 02:47:49,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:47:49,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:47:49,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:47:50,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:47:50,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:47:50,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116450080] [2024-10-24 02:47:50,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116450080] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:47:50,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:47:50,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 02:47:50,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441631303] [2024-10-24 02:47:50,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:47:50,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 02:47:50,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:47:50,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 02:47:50,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 02:47:50,028 INFO L87 Difference]: Start difference. First operand 1687 states and 3082 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:50,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:47:50,064 INFO L93 Difference]: Finished difference Result 1693 states and 3089 transitions. [2024-10-24 02:47:50,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 02:47:50,064 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-10-24 02:47:50,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:47:50,070 INFO L225 Difference]: With dead ends: 1693 [2024-10-24 02:47:50,070 INFO L226 Difference]: Without dead ends: 1691 [2024-10-24 02:47:50,071 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 02:47:50,073 INFO L432 NwaCegarLoop]: 1536 mSDtfsCounter, 0 mSDsluCounter, 3064 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4600 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:47:50,073 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4600 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:47:50,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1691 states. [2024-10-24 02:47:50,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1691 to 1691. [2024-10-24 02:47:50,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1691 states, 1689 states have (on average 1.8265245707519242) internal successors, (3085), 1690 states have internal predecessors, (3085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:50,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1691 states to 1691 states and 3085 transitions. [2024-10-24 02:47:50,098 INFO L78 Accepts]: Start accepts. Automaton has 1691 states and 3085 transitions. Word has length 54 [2024-10-24 02:47:50,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:47:50,099 INFO L471 AbstractCegarLoop]: Abstraction has 1691 states and 3085 transitions. [2024-10-24 02:47:50,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:50,099 INFO L276 IsEmpty]: Start isEmpty. Operand 1691 states and 3085 transitions. [2024-10-24 02:47:50,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-24 02:47:50,099 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:47:50,099 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:47:50,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 02:47:50,100 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:47:50,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:47:50,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1922958665, now seen corresponding path program 1 times [2024-10-24 02:47:50,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:47:50,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990366857] [2024-10-24 02:47:50,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:47:50,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:47:50,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:47:50,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:47:50,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:47:50,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990366857] [2024-10-24 02:47:50,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990366857] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:47:50,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:47:50,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:47:50,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107603102] [2024-10-24 02:47:50,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:47:50,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:47:50,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:47:50,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:47:50,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:47:50,141 INFO L87 Difference]: Start difference. First operand 1691 states and 3085 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:50,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:47:50,174 INFO L93 Difference]: Finished difference Result 1853 states and 3338 transitions. [2024-10-24 02:47:50,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:47:50,174 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-10-24 02:47:50,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:47:50,179 INFO L225 Difference]: With dead ends: 1853 [2024-10-24 02:47:50,179 INFO L226 Difference]: Without dead ends: 1769 [2024-10-24 02:47:50,180 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:47:50,181 INFO L432 NwaCegarLoop]: 1587 mSDtfsCounter, 1494 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1494 SdHoareTripleChecker+Valid, 1653 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:47:50,182 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1494 Valid, 1653 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:47:50,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1769 states. [2024-10-24 02:47:50,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1769 to 1767. [2024-10-24 02:47:50,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1767 states, 1765 states have (on average 1.8141643059490085) internal successors, (3202), 1766 states have internal predecessors, (3202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:50,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 3202 transitions. [2024-10-24 02:47:50,211 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 3202 transitions. Word has length 55 [2024-10-24 02:47:50,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:47:50,211 INFO L471 AbstractCegarLoop]: Abstraction has 1767 states and 3202 transitions. [2024-10-24 02:47:50,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:50,211 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 3202 transitions. [2024-10-24 02:47:50,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-24 02:47:50,212 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:47:50,212 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:47:50,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 02:47:50,213 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:47:50,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:47:50,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1694319433, now seen corresponding path program 1 times [2024-10-24 02:47:50,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:47:50,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294439139] [2024-10-24 02:47:50,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:47:50,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:47:50,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:47:50,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:47:50,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:47:50,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294439139] [2024-10-24 02:47:50,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294439139] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:47:50,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:47:50,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:47:50,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773393994] [2024-10-24 02:47:50,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:47:50,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:47:50,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:47:50,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:47:50,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:47:50,262 INFO L87 Difference]: Start difference. First operand 1767 states and 3202 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:50,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:47:50,295 INFO L93 Difference]: Finished difference Result 2193 states and 3862 transitions. [2024-10-24 02:47:50,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:47:50,296 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-10-24 02:47:50,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:47:50,302 INFO L225 Difference]: With dead ends: 2193 [2024-10-24 02:47:50,302 INFO L226 Difference]: Without dead ends: 1968 [2024-10-24 02:47:50,304 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:47:50,305 INFO L432 NwaCegarLoop]: 1579 mSDtfsCounter, 1490 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 1653 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:47:50,306 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1490 Valid, 1653 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:47:50,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1968 states. [2024-10-24 02:47:50,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1968 to 1966. [2024-10-24 02:47:50,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1966 states, 1964 states have (on average 1.7841140529531567) internal successors, (3504), 1965 states have internal predecessors, (3504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:50,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1966 states to 1966 states and 3504 transitions. [2024-10-24 02:47:50,337 INFO L78 Accepts]: Start accepts. Automaton has 1966 states and 3504 transitions. Word has length 55 [2024-10-24 02:47:50,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:47:50,338 INFO L471 AbstractCegarLoop]: Abstraction has 1966 states and 3504 transitions. [2024-10-24 02:47:50,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:50,338 INFO L276 IsEmpty]: Start isEmpty. Operand 1966 states and 3504 transitions. [2024-10-24 02:47:50,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-24 02:47:50,338 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:47:50,339 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:47:50,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 02:47:50,339 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:47:50,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:47:50,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1068663369, now seen corresponding path program 1 times [2024-10-24 02:47:50,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:47:50,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907472545] [2024-10-24 02:47:50,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:47:50,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:47:50,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:47:50,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:47:50,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:47:50,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907472545] [2024-10-24 02:47:50,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907472545] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:47:50,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:47:50,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:47:50,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146416310] [2024-10-24 02:47:50,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:47:50,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:47:50,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:47:50,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:47:50,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:47:50,386 INFO L87 Difference]: Start difference. First operand 1966 states and 3504 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:50,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:47:50,419 INFO L93 Difference]: Finished difference Result 2766 states and 4726 transitions. [2024-10-24 02:47:50,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:47:50,420 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-10-24 02:47:50,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:47:50,426 INFO L225 Difference]: With dead ends: 2766 [2024-10-24 02:47:50,426 INFO L226 Difference]: Without dead ends: 2342 [2024-10-24 02:47:50,427 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:47:50,427 INFO L432 NwaCegarLoop]: 1577 mSDtfsCounter, 1488 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 1655 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:47:50,428 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 1655 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:47:50,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2342 states. [2024-10-24 02:47:50,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2342 to 2340. [2024-10-24 02:47:50,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2340 states, 2338 states have (on average 1.7365269461077844) internal successors, (4060), 2339 states have internal predecessors, (4060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:50,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2340 states to 2340 states and 4060 transitions. [2024-10-24 02:47:50,464 INFO L78 Accepts]: Start accepts. Automaton has 2340 states and 4060 transitions. Word has length 55 [2024-10-24 02:47:50,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:47:50,464 INFO L471 AbstractCegarLoop]: Abstraction has 2340 states and 4060 transitions. [2024-10-24 02:47:50,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:50,465 INFO L276 IsEmpty]: Start isEmpty. Operand 2340 states and 4060 transitions. [2024-10-24 02:47:50,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-24 02:47:50,465 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:47:50,465 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:47:50,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 02:47:50,465 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:47:50,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:47:50,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1957396809, now seen corresponding path program 1 times [2024-10-24 02:47:50,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:47:50,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488720714] [2024-10-24 02:47:50,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:47:50,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:47:50,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:47:50,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:47:50,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:47:50,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488720714] [2024-10-24 02:47:50,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488720714] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:47:50,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:47:50,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:47:50,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762122261] [2024-10-24 02:47:50,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:47:50,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:47:50,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:47:50,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:47:50,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:47:50,508 INFO L87 Difference]: Start difference. First operand 2340 states and 4060 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:50,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:47:50,547 INFO L93 Difference]: Finished difference Result 3840 states and 6310 transitions. [2024-10-24 02:47:50,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:47:50,548 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-10-24 02:47:50,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:47:50,556 INFO L225 Difference]: With dead ends: 3840 [2024-10-24 02:47:50,556 INFO L226 Difference]: Without dead ends: 3042 [2024-10-24 02:47:50,557 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:47:50,558 INFO L432 NwaCegarLoop]: 1575 mSDtfsCounter, 1486 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1486 SdHoareTripleChecker+Valid, 1657 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:47:50,558 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1486 Valid, 1657 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:47:50,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3042 states. [2024-10-24 02:47:50,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3042 to 3040. [2024-10-24 02:47:50,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3040 states, 3038 states have (on average 1.6708360763660304) internal successors, (5076), 3039 states have internal predecessors, (5076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:50,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3040 states to 3040 states and 5076 transitions. [2024-10-24 02:47:50,606 INFO L78 Accepts]: Start accepts. Automaton has 3040 states and 5076 transitions. Word has length 55 [2024-10-24 02:47:50,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:47:50,607 INFO L471 AbstractCegarLoop]: Abstraction has 3040 states and 5076 transitions. [2024-10-24 02:47:50,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:50,607 INFO L276 IsEmpty]: Start isEmpty. Operand 3040 states and 5076 transitions. [2024-10-24 02:47:50,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-24 02:47:50,607 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:47:50,607 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:47:50,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-24 02:47:50,608 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:47:50,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:47:50,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1654375497, now seen corresponding path program 1 times [2024-10-24 02:47:50,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:47:50,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593640052] [2024-10-24 02:47:50,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:47:50,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:47:50,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:47:50,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:47:50,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:47:50,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593640052] [2024-10-24 02:47:50,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593640052] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:47:50,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:47:50,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:47:50,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167566523] [2024-10-24 02:47:50,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:47:50,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:47:50,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:47:50,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:47:50,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:47:50,688 INFO L87 Difference]: Start difference. First operand 3040 states and 5076 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:50,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:47:50,740 INFO L93 Difference]: Finished difference Result 5844 states and 9190 transitions. [2024-10-24 02:47:50,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:47:50,740 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-10-24 02:47:50,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:47:50,751 INFO L225 Difference]: With dead ends: 5844 [2024-10-24 02:47:50,751 INFO L226 Difference]: Without dead ends: 4346 [2024-10-24 02:47:50,753 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:47:50,754 INFO L432 NwaCegarLoop]: 1589 mSDtfsCounter, 1492 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1492 SdHoareTripleChecker+Valid, 1659 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:47:50,754 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1492 Valid, 1659 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:47:50,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4346 states. [2024-10-24 02:47:50,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4346 to 4344. [2024-10-24 02:47:50,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4344 states, 4342 states have (on average 1.592814371257485) internal successors, (6916), 4343 states have internal predecessors, (6916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:50,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4344 states to 4344 states and 6916 transitions. [2024-10-24 02:47:50,825 INFO L78 Accepts]: Start accepts. Automaton has 4344 states and 6916 transitions. Word has length 55 [2024-10-24 02:47:50,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:47:50,826 INFO L471 AbstractCegarLoop]: Abstraction has 4344 states and 6916 transitions. [2024-10-24 02:47:50,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:50,826 INFO L276 IsEmpty]: Start isEmpty. Operand 4344 states and 6916 transitions. [2024-10-24 02:47:50,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-10-24 02:47:50,830 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:47:50,830 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:47:50,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-24 02:47:50,830 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:47:50,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:47:50,831 INFO L85 PathProgramCache]: Analyzing trace with hash 285878162, now seen corresponding path program 1 times [2024-10-24 02:47:50,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:47:50,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373394608] [2024-10-24 02:47:50,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:47:50,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:47:50,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:47:50,960 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 02:47:50,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:47:50,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373394608] [2024-10-24 02:47:50,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373394608] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:47:50,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:47:50,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 02:47:50,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419015349] [2024-10-24 02:47:50,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:47:50,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 02:47:50,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:47:50,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 02:47:50,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:47:50,962 INFO L87 Difference]: Start difference. First operand 4344 states and 6916 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:51,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:47:51,233 INFO L93 Difference]: Finished difference Result 18132 states and 26906 transitions. [2024-10-24 02:47:51,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 02:47:51,234 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-10-24 02:47:51,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:47:51,259 INFO L225 Difference]: With dead ends: 18132 [2024-10-24 02:47:51,259 INFO L226 Difference]: Without dead ends: 16146 [2024-10-24 02:47:51,266 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-10-24 02:47:51,267 INFO L432 NwaCegarLoop]: 1596 mSDtfsCounter, 6293 mSDsluCounter, 1945 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6293 SdHoareTripleChecker+Valid, 3541 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 02:47:51,267 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6293 Valid, 3541 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 02:47:51,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16146 states. [2024-10-24 02:47:51,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16146 to 6744. [2024-10-24 02:47:51,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6744 states, 6742 states have (on average 1.5360427172945714) internal successors, (10356), 6743 states have internal predecessors, (10356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:51,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6744 states to 6744 states and 10356 transitions. [2024-10-24 02:47:51,509 INFO L78 Accepts]: Start accepts. Automaton has 6744 states and 10356 transitions. Word has length 73 [2024-10-24 02:47:51,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:47:51,509 INFO L471 AbstractCegarLoop]: Abstraction has 6744 states and 10356 transitions. [2024-10-24 02:47:51,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:51,509 INFO L276 IsEmpty]: Start isEmpty. Operand 6744 states and 10356 transitions. [2024-10-24 02:47:51,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-10-24 02:47:51,510 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:47:51,511 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:47:51,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-24 02:47:51,511 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:47:51,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:47:51,511 INFO L85 PathProgramCache]: Analyzing trace with hash 57238930, now seen corresponding path program 1 times [2024-10-24 02:47:51,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:47:51,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566709788] [2024-10-24 02:47:51,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:47:51,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:47:51,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:47:51,615 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-24 02:47:51,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:47:51,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566709788] [2024-10-24 02:47:51,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566709788] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:47:51,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:47:51,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 02:47:51,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540192030] [2024-10-24 02:47:51,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:47:51,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 02:47:51,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:47:51,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 02:47:51,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:47:51,617 INFO L87 Difference]: Start difference. First operand 6744 states and 10356 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:51,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:47:51,932 INFO L93 Difference]: Finished difference Result 20932 states and 30938 transitions. [2024-10-24 02:47:51,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 02:47:51,933 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-10-24 02:47:51,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:47:51,961 INFO L225 Difference]: With dead ends: 20932 [2024-10-24 02:47:51,961 INFO L226 Difference]: Without dead ends: 18130 [2024-10-24 02:47:51,970 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-10-24 02:47:51,971 INFO L432 NwaCegarLoop]: 1596 mSDtfsCounter, 6338 mSDsluCounter, 1978 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6338 SdHoareTripleChecker+Valid, 3574 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 02:47:51,971 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6338 Valid, 3574 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 02:47:51,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18130 states. [2024-10-24 02:47:52,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18130 to 10536. [2024-10-24 02:47:52,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10536 states, 10534 states have (on average 1.49800645528764) internal successors, (15780), 10535 states have internal predecessors, (15780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:52,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10536 states to 10536 states and 15780 transitions. [2024-10-24 02:47:52,324 INFO L78 Accepts]: Start accepts. Automaton has 10536 states and 15780 transitions. Word has length 73 [2024-10-24 02:47:52,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:47:52,325 INFO L471 AbstractCegarLoop]: Abstraction has 10536 states and 15780 transitions. [2024-10-24 02:47:52,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:52,326 INFO L276 IsEmpty]: Start isEmpty. Operand 10536 states and 15780 transitions. [2024-10-24 02:47:52,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-10-24 02:47:52,328 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:47:52,328 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:47:52,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-24 02:47:52,328 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:47:52,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:47:52,329 INFO L85 PathProgramCache]: Analyzing trace with hash -568417134, now seen corresponding path program 1 times [2024-10-24 02:47:52,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:47:52,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964576188] [2024-10-24 02:47:52,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:47:52,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:47:52,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:47:52,479 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-24 02:47:52,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:47:52,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964576188] [2024-10-24 02:47:52,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964576188] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:47:52,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:47:52,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 02:47:52,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026962241] [2024-10-24 02:47:52,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:47:52,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 02:47:52,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:47:52,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 02:47:52,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:47:52,481 INFO L87 Difference]: Start difference. First operand 10536 states and 15780 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:52,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:47:52,963 INFO L93 Difference]: Finished difference Result 23732 states and 34954 transitions. [2024-10-24 02:47:52,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 02:47:52,964 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-10-24 02:47:52,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:47:52,996 INFO L225 Difference]: With dead ends: 23732 [2024-10-24 02:47:52,996 INFO L226 Difference]: Without dead ends: 20930 [2024-10-24 02:47:53,007 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-10-24 02:47:53,007 INFO L432 NwaCegarLoop]: 1594 mSDtfsCounter, 6381 mSDsluCounter, 1961 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6381 SdHoareTripleChecker+Valid, 3555 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 02:47:53,008 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6381 Valid, 3555 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 02:47:53,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20930 states. [2024-10-24 02:47:53,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20930 to 13336. [2024-10-24 02:47:53,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13336 states, 13334 states have (on average 1.4846257687115645) internal successors, (19796), 13335 states have internal predecessors, (19796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:53,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13336 states to 13336 states and 19796 transitions. [2024-10-24 02:47:53,365 INFO L78 Accepts]: Start accepts. Automaton has 13336 states and 19796 transitions. Word has length 73 [2024-10-24 02:47:53,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:47:53,365 INFO L471 AbstractCegarLoop]: Abstraction has 13336 states and 19796 transitions. [2024-10-24 02:47:53,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:53,366 INFO L276 IsEmpty]: Start isEmpty. Operand 13336 states and 19796 transitions. [2024-10-24 02:47:53,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-10-24 02:47:53,367 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:47:53,367 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:47:53,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-24 02:47:53,367 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:47:53,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:47:53,368 INFO L85 PathProgramCache]: Analyzing trace with hash 320316306, now seen corresponding path program 1 times [2024-10-24 02:47:53,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:47:53,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754107633] [2024-10-24 02:47:53,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:47:53,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:47:53,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:47:53,480 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-24 02:47:53,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:47:53,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754107633] [2024-10-24 02:47:53,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754107633] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:47:53,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:47:53,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 02:47:53,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795815172] [2024-10-24 02:47:53,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:47:53,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 02:47:53,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:47:53,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 02:47:53,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:47:53,482 INFO L87 Difference]: Start difference. First operand 13336 states and 19796 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:53,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:47:53,877 INFO L93 Difference]: Finished difference Result 26532 states and 38970 transitions. [2024-10-24 02:47:53,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 02:47:53,878 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-10-24 02:47:53,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:47:53,913 INFO L225 Difference]: With dead ends: 26532 [2024-10-24 02:47:53,913 INFO L226 Difference]: Without dead ends: 23730 [2024-10-24 02:47:53,926 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-10-24 02:47:53,927 INFO L432 NwaCegarLoop]: 1594 mSDtfsCounter, 6341 mSDsluCounter, 1983 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6341 SdHoareTripleChecker+Valid, 3577 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 02:47:53,927 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6341 Valid, 3577 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 02:47:53,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23730 states. [2024-10-24 02:47:54,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23730 to 16136. [2024-10-24 02:47:54,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16136 states, 16134 states have (on average 1.4758894260567745) internal successors, (23812), 16135 states have internal predecessors, (23812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:54,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16136 states to 16136 states and 23812 transitions. [2024-10-24 02:47:54,346 INFO L78 Accepts]: Start accepts. Automaton has 16136 states and 23812 transitions. Word has length 73 [2024-10-24 02:47:54,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:47:54,346 INFO L471 AbstractCegarLoop]: Abstraction has 16136 states and 23812 transitions. [2024-10-24 02:47:54,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:54,346 INFO L276 IsEmpty]: Start isEmpty. Operand 16136 states and 23812 transitions. [2024-10-24 02:47:54,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-10-24 02:47:54,348 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:47:54,348 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:47:54,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-24 02:47:54,348 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:47:54,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:47:54,349 INFO L85 PathProgramCache]: Analyzing trace with hash 17294994, now seen corresponding path program 1 times [2024-10-24 02:47:54,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:47:54,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623540317] [2024-10-24 02:47:54,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:47:54,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:47:54,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:47:54,453 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 02:47:54,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:47:54,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623540317] [2024-10-24 02:47:54,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623540317] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:47:54,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:47:54,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 02:47:54,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210853144] [2024-10-24 02:47:54,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:47:54,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 02:47:54,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:47:54,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 02:47:54,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:47:54,455 INFO L87 Difference]: Start difference. First operand 16136 states and 23812 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:54,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:47:54,895 INFO L93 Difference]: Finished difference Result 29332 states and 42986 transitions. [2024-10-24 02:47:54,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 02:47:54,895 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-10-24 02:47:54,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:47:54,936 INFO L225 Difference]: With dead ends: 29332 [2024-10-24 02:47:54,937 INFO L226 Difference]: Without dead ends: 26530 [2024-10-24 02:47:54,947 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-10-24 02:47:54,948 INFO L432 NwaCegarLoop]: 1593 mSDtfsCounter, 6293 mSDsluCounter, 2072 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6293 SdHoareTripleChecker+Valid, 3665 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 02:47:54,948 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6293 Valid, 3665 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 02:47:54,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26530 states. [2024-10-24 02:47:55,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26530 to 18936. [2024-10-24 02:47:55,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18936 states, 18934 states have (on average 1.469736981092215) internal successors, (27828), 18935 states have internal predecessors, (27828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:55,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18936 states to 18936 states and 27828 transitions. [2024-10-24 02:47:55,396 INFO L78 Accepts]: Start accepts. Automaton has 18936 states and 27828 transitions. Word has length 73 [2024-10-24 02:47:55,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:47:55,396 INFO L471 AbstractCegarLoop]: Abstraction has 18936 states and 27828 transitions. [2024-10-24 02:47:55,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:55,397 INFO L276 IsEmpty]: Start isEmpty. Operand 18936 states and 27828 transitions. [2024-10-24 02:47:55,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-10-24 02:47:55,398 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:47:55,398 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:47:55,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-24 02:47:55,399 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:47:55,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:47:55,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1436271534, now seen corresponding path program 1 times [2024-10-24 02:47:55,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:47:55,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943814593] [2024-10-24 02:47:55,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:47:55,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:47:55,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:47:55,475 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:47:55,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:47:55,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943814593] [2024-10-24 02:47:55,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943814593] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:47:55,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:47:55,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:47:55,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96662146] [2024-10-24 02:47:55,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:47:55,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:47:55,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:47:55,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:47:55,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:47:55,477 INFO L87 Difference]: Start difference. First operand 18936 states and 27828 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:55,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:47:55,832 INFO L93 Difference]: Finished difference Result 36332 states and 52806 transitions. [2024-10-24 02:47:55,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:47:55,833 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2024-10-24 02:47:55,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:47:55,860 INFO L225 Difference]: With dead ends: 36332 [2024-10-24 02:47:55,861 INFO L226 Difference]: Without dead ends: 18938 [2024-10-24 02:47:55,873 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:47:55,873 INFO L432 NwaCegarLoop]: 1571 mSDtfsCounter, 45 mSDsluCounter, 1526 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3097 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:47:55,874 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 3097 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:47:55,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18938 states. [2024-10-24 02:47:56,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18938 to 18936. [2024-10-24 02:47:56,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18936 states, 18934 states have (on average 1.4541037287419456) internal successors, (27532), 18935 states have internal predecessors, (27532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:56,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18936 states to 18936 states and 27532 transitions. [2024-10-24 02:47:56,426 INFO L78 Accepts]: Start accepts. Automaton has 18936 states and 27532 transitions. Word has length 74 [2024-10-24 02:47:56,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:47:56,426 INFO L471 AbstractCegarLoop]: Abstraction has 18936 states and 27532 transitions. [2024-10-24 02:47:56,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:56,427 INFO L276 IsEmpty]: Start isEmpty. Operand 18936 states and 27532 transitions. [2024-10-24 02:47:56,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-10-24 02:47:56,428 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:47:56,429 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:47:56,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-24 02:47:56,429 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:47:56,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:47:56,430 INFO L85 PathProgramCache]: Analyzing trace with hash -702984806, now seen corresponding path program 1 times [2024-10-24 02:47:56,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:47:56,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315224573] [2024-10-24 02:47:56,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:47:56,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:47:56,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:47:56,525 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:47:56,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:47:56,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315224573] [2024-10-24 02:47:56,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315224573] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:47:56,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:47:56,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:47:56,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028278652] [2024-10-24 02:47:56,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:47:56,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:47:56,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:47:56,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:47:56,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:47:56,527 INFO L87 Difference]: Start difference. First operand 18936 states and 27532 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:56,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:47:56,713 INFO L93 Difference]: Finished difference Result 25406 states and 36809 transitions. [2024-10-24 02:47:56,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:47:56,713 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2024-10-24 02:47:56,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:47:56,724 INFO L225 Difference]: With dead ends: 25406 [2024-10-24 02:47:56,725 INFO L226 Difference]: Without dead ends: 8012 [2024-10-24 02:47:56,740 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:47:56,741 INFO L432 NwaCegarLoop]: 1569 mSDtfsCounter, 39 mSDsluCounter, 1525 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 3094 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:47:56,741 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 3094 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:47:56,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8012 states. [2024-10-24 02:47:56,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8012 to 8005. [2024-10-24 02:47:56,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8005 states, 8003 states have (on average 1.5015619142821441) internal successors, (12017), 8004 states have internal predecessors, (12017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:56,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8005 states to 8005 states and 12017 transitions. [2024-10-24 02:47:56,941 INFO L78 Accepts]: Start accepts. Automaton has 8005 states and 12017 transitions. Word has length 75 [2024-10-24 02:47:56,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:47:56,942 INFO L471 AbstractCegarLoop]: Abstraction has 8005 states and 12017 transitions. [2024-10-24 02:47:56,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:56,942 INFO L276 IsEmpty]: Start isEmpty. Operand 8005 states and 12017 transitions. [2024-10-24 02:47:56,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-10-24 02:47:56,946 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:47:56,946 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] [2024-10-24 02:47:56,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-24 02:47:56,946 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:47:56,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:47:56,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1790502652, now seen corresponding path program 1 times [2024-10-24 02:47:56,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:47:56,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161317477] [2024-10-24 02:47:56,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:47:56,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:47:56,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:47:57,024 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:47:57,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:47:57,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161317477] [2024-10-24 02:47:57,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161317477] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:47:57,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:47:57,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:47:57,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926760406] [2024-10-24 02:47:57,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:47:57,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:47:57,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:47:57,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:47:57,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:47:57,026 INFO L87 Difference]: Start difference. First operand 8005 states and 12017 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:57,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:47:57,094 INFO L93 Difference]: Finished difference Result 11233 states and 16595 transitions. [2024-10-24 02:47:57,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:47:57,094 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-10-24 02:47:57,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:47:57,101 INFO L225 Difference]: With dead ends: 11233 [2024-10-24 02:47:57,101 INFO L226 Difference]: Without dead ends: 4783 [2024-10-24 02:47:57,107 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:47:57,108 INFO L432 NwaCegarLoop]: 1563 mSDtfsCounter, 41 mSDsluCounter, 1510 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 3073 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:47:57,108 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 3073 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:47:57,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4783 states. [2024-10-24 02:47:57,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4783 to 4781. [2024-10-24 02:47:57,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4781 states, 4779 states have (on average 1.5461393596986817) internal successors, (7389), 4780 states have internal predecessors, (7389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:57,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4781 states to 4781 states and 7389 transitions. [2024-10-24 02:47:57,182 INFO L78 Accepts]: Start accepts. Automaton has 4781 states and 7389 transitions. Word has length 76 [2024-10-24 02:47:57,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:47:57,182 INFO L471 AbstractCegarLoop]: Abstraction has 4781 states and 7389 transitions. [2024-10-24 02:47:57,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:57,182 INFO L276 IsEmpty]: Start isEmpty. Operand 4781 states and 7389 transitions. [2024-10-24 02:47:57,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-10-24 02:47:57,183 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:47:57,183 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:47:57,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-24 02:47:57,183 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:47:57,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:47:57,184 INFO L85 PathProgramCache]: Analyzing trace with hash -626519094, now seen corresponding path program 1 times [2024-10-24 02:47:57,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:47:57,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716871571] [2024-10-24 02:47:57,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:47:57,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:47:57,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:47:57,252 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:47:57,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:47:57,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716871571] [2024-10-24 02:47:57,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716871571] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:47:57,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:47:57,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:47:57,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680295484] [2024-10-24 02:47:57,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:47:57,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:47:57,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:47:57,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:47:57,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:47:57,254 INFO L87 Difference]: Start difference. First operand 4781 states and 7389 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:57,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:47:57,296 INFO L93 Difference]: Finished difference Result 6397 states and 9653 transitions. [2024-10-24 02:47:57,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:47:57,297 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-10-24 02:47:57,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:47:57,302 INFO L225 Difference]: With dead ends: 6397 [2024-10-24 02:47:57,302 INFO L226 Difference]: Without dead ends: 3171 [2024-10-24 02:47:57,306 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:47:57,307 INFO L432 NwaCegarLoop]: 1556 mSDtfsCounter, 38 mSDsluCounter, 1502 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 3058 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:47:57,307 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 3058 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:47:57,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3171 states. [2024-10-24 02:47:57,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3171 to 3169. [2024-10-24 02:47:57,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3169 states, 3167 states have (on average 1.6106725607830754) internal successors, (5101), 3168 states have internal predecessors, (5101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:57,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3169 states to 3169 states and 5101 transitions. [2024-10-24 02:47:57,377 INFO L78 Accepts]: Start accepts. Automaton has 3169 states and 5101 transitions. Word has length 78 [2024-10-24 02:47:57,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:47:57,378 INFO L471 AbstractCegarLoop]: Abstraction has 3169 states and 5101 transitions. [2024-10-24 02:47:57,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:57,378 INFO L276 IsEmpty]: Start isEmpty. Operand 3169 states and 5101 transitions. [2024-10-24 02:47:57,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-10-24 02:47:57,379 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:47:57,379 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:47:57,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-24 02:47:57,379 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:47:57,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:47:57,379 INFO L85 PathProgramCache]: Analyzing trace with hash 439495192, now seen corresponding path program 1 times [2024-10-24 02:47:57,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:47:57,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814346727] [2024-10-24 02:47:57,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:47:57,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:47:57,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:47:57,443 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:47:57,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:47:57,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814346727] [2024-10-24 02:47:57,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814346727] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:47:57,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:47:57,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:47:57,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884084005] [2024-10-24 02:47:57,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:47:57,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:47:57,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:47:57,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:47:57,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:47:57,446 INFO L87 Difference]: Start difference. First operand 3169 states and 5101 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:57,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:47:57,475 INFO L93 Difference]: Finished difference Result 3979 states and 6221 transitions. [2024-10-24 02:47:57,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:47:57,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-10-24 02:47:57,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:47:57,481 INFO L225 Difference]: With dead ends: 3979 [2024-10-24 02:47:57,481 INFO L226 Difference]: Without dead ends: 2365 [2024-10-24 02:47:57,482 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:47:57,482 INFO L432 NwaCegarLoop]: 1549 mSDtfsCounter, 35 mSDsluCounter, 1494 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 3043 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:47:57,482 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 3043 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:47:57,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2365 states. [2024-10-24 02:47:57,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2365 to 2363. [2024-10-24 02:47:57,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2363 states, 2361 states have (on average 1.6814908936891149) internal successors, (3970), 2362 states have internal predecessors, (3970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:57,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2363 states to 2363 states and 3970 transitions. [2024-10-24 02:47:57,510 INFO L78 Accepts]: Start accepts. Automaton has 2363 states and 3970 transitions. Word has length 80 [2024-10-24 02:47:57,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:47:57,510 INFO L471 AbstractCegarLoop]: Abstraction has 2363 states and 3970 transitions. [2024-10-24 02:47:57,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:57,510 INFO L276 IsEmpty]: Start isEmpty. Operand 2363 states and 3970 transitions. [2024-10-24 02:47:57,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-10-24 02:47:57,511 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:47:57,511 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:47:57,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-24 02:47:57,512 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:47:57,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:47:57,512 INFO L85 PathProgramCache]: Analyzing trace with hash 397937126, now seen corresponding path program 1 times [2024-10-24 02:47:57,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:47:57,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678607385] [2024-10-24 02:47:57,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:47:57,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:47:57,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:47:57,665 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 02:47:57,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:47:57,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678607385] [2024-10-24 02:47:57,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678607385] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:47:57,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582081346] [2024-10-24 02:47:57,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:47:57,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:47:57,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:47:57,668 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 02:47:57,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 02:47:57,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:47:57,773 INFO L255 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-24 02:47:57,779 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:47:58,146 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:47:58,146 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 02:47:58,953 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:47:58,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1582081346] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 02:47:58,954 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 02:47:58,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 9, 9] total 20 [2024-10-24 02:47:58,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622391833] [2024-10-24 02:47:58,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 02:47:58,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-24 02:47:58,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:47:58,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-24 02:47:58,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2024-10-24 02:47:58,956 INFO L87 Difference]: Start difference. First operand 2363 states and 3970 transitions. Second operand has 20 states, 20 states have (on average 10.75) internal successors, (215), 20 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:59,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:47:59,562 INFO L93 Difference]: Finished difference Result 4716 states and 7080 transitions. [2024-10-24 02:47:59,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-24 02:47:59,563 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 10.75) internal successors, (215), 20 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2024-10-24 02:47:59,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:47:59,568 INFO L225 Difference]: With dead ends: 4716 [2024-10-24 02:47:59,568 INFO L226 Difference]: Without dead ends: 3908 [2024-10-24 02:47:59,569 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=334, Invalid=998, Unknown=0, NotChecked=0, Total=1332 [2024-10-24 02:47:59,569 INFO L432 NwaCegarLoop]: 1506 mSDtfsCounter, 13935 mSDsluCounter, 3263 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13935 SdHoareTripleChecker+Valid, 4769 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 02:47:59,570 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13935 Valid, 4769 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 02:47:59,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3908 states. [2024-10-24 02:47:59,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3908 to 3778. [2024-10-24 02:47:59,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3778 states, 3776 states have (on average 1.525688559322034) internal successors, (5761), 3777 states have internal predecessors, (5761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:59,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3778 states to 3778 states and 5761 transitions. [2024-10-24 02:47:59,630 INFO L78 Accepts]: Start accepts. Automaton has 3778 states and 5761 transitions. Word has length 82 [2024-10-24 02:47:59,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:47:59,630 INFO L471 AbstractCegarLoop]: Abstraction has 3778 states and 5761 transitions. [2024-10-24 02:47:59,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 10.75) internal successors, (215), 20 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:47:59,630 INFO L276 IsEmpty]: Start isEmpty. Operand 3778 states and 5761 transitions. [2024-10-24 02:47:59,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-10-24 02:47:59,631 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:47:59,631 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:47:59,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-24 02:47:59,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-10-24 02:47:59,832 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:47:59,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:47:59,833 INFO L85 PathProgramCache]: Analyzing trace with hash 577648048, now seen corresponding path program 1 times [2024-10-24 02:47:59,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:47:59,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65786195] [2024-10-24 02:47:59,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:47:59,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:47:59,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:48:00,125 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:48:00,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:48:00,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65786195] [2024-10-24 02:48:00,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65786195] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:48:00,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376797848] [2024-10-24 02:48:00,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:48:00,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:48:00,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:48:00,128 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 02:48:00,129 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 02:48:00,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:48:00,226 INFO L255 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-10-24 02:48:00,228 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:48:00,942 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:48:00,942 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 02:48:01,876 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:48:01,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [376797848] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 02:48:01,876 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 02:48:01,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 15, 17] total 38 [2024-10-24 02:48:01,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993575211] [2024-10-24 02:48:01,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 02:48:01,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-10-24 02:48:01,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:48:01,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-10-24 02:48:01,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1249, Unknown=0, NotChecked=0, Total=1406 [2024-10-24 02:48:01,878 INFO L87 Difference]: Start difference. First operand 3778 states and 5761 transitions. Second operand has 38 states, 38 states have (on average 5.7894736842105265) internal successors, (220), 38 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:48:07,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:48:07,281 INFO L93 Difference]: Finished difference Result 32736 states and 44449 transitions. [2024-10-24 02:48:07,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2024-10-24 02:48:07,281 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.7894736842105265) internal successors, (220), 38 states have internal predecessors, (220), 0 states have call successors, (0), 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 83 [2024-10-24 02:48:07,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:48:07,313 INFO L225 Difference]: With dead ends: 32736 [2024-10-24 02:48:07,313 INFO L226 Difference]: Without dead ends: 30533 [2024-10-24 02:48:07,326 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6577 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=3080, Invalid=16380, Unknown=0, NotChecked=0, Total=19460 [2024-10-24 02:48:07,326 INFO L432 NwaCegarLoop]: 1516 mSDtfsCounter, 19535 mSDsluCounter, 15701 mSDsCounter, 0 mSdLazyCounter, 1686 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19535 SdHoareTripleChecker+Valid, 17217 SdHoareTripleChecker+Invalid, 1789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-24 02:48:07,327 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19535 Valid, 17217 Invalid, 1789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1686 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-24 02:48:07,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30533 states. [2024-10-24 02:48:07,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30533 to 9452. [2024-10-24 02:48:07,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9452 states, 9450 states have (on average 1.3756613756613756) internal successors, (13000), 9451 states have internal predecessors, (13000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:48:07,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9452 states to 9452 states and 13000 transitions. [2024-10-24 02:48:07,666 INFO L78 Accepts]: Start accepts. Automaton has 9452 states and 13000 transitions. Word has length 83 [2024-10-24 02:48:07,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:48:07,666 INFO L471 AbstractCegarLoop]: Abstraction has 9452 states and 13000 transitions. [2024-10-24 02:48:07,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 5.7894736842105265) internal successors, (220), 38 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:48:07,666 INFO L276 IsEmpty]: Start isEmpty. Operand 9452 states and 13000 transitions. [2024-10-24 02:48:07,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-10-24 02:48:07,667 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:48:07,668 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:48:07,680 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-24 02:48:07,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-10-24 02:48:07,872 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:48:07,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:48:07,872 INFO L85 PathProgramCache]: Analyzing trace with hash -286841112, now seen corresponding path program 1 times [2024-10-24 02:48:07,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:48:07,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437446776] [2024-10-24 02:48:07,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:48:07,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:48:07,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:48:08,199 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:48:08,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:48:08,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437446776] [2024-10-24 02:48:08,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437446776] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:48:08,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025446198] [2024-10-24 02:48:08,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:48:08,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:48:08,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:48:08,202 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 02:48:08,203 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 02:48:08,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:48:08,300 INFO L255 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-24 02:48:08,302 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:48:08,931 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:48:08,931 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 02:48:09,875 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:48:09,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025446198] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 02:48:09,876 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 02:48:09,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 32 [2024-10-24 02:48:09,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602136734] [2024-10-24 02:48:09,876 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 02:48:09,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-10-24 02:48:09,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:48:09,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-10-24 02:48:09,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=886, Unknown=0, NotChecked=0, Total=992 [2024-10-24 02:48:09,877 INFO L87 Difference]: Start difference. First operand 9452 states and 13000 transitions. Second operand has 32 states, 32 states have (on average 7.34375) internal successors, (235), 32 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:48:12,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:48:12,466 INFO L93 Difference]: Finished difference Result 33091 states and 44295 transitions. [2024-10-24 02:48:12,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-10-24 02:48:12,467 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 7.34375) internal successors, (235), 32 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2024-10-24 02:48:12,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:48:12,488 INFO L225 Difference]: With dead ends: 33091 [2024-10-24 02:48:12,488 INFO L226 Difference]: Without dead ends: 25764 [2024-10-24 02:48:12,493 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1166 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=939, Invalid=4173, Unknown=0, NotChecked=0, Total=5112 [2024-10-24 02:48:12,493 INFO L432 NwaCegarLoop]: 1496 mSDtfsCounter, 16075 mSDsluCounter, 12471 mSDsCounter, 0 mSdLazyCounter, 1137 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16075 SdHoareTripleChecker+Valid, 13967 SdHoareTripleChecker+Invalid, 1196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-24 02:48:12,494 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16075 Valid, 13967 Invalid, 1196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1137 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-24 02:48:12,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25764 states. [2024-10-24 02:48:12,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25764 to 11793. [2024-10-24 02:48:12,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11793 states, 11791 states have (on average 1.362734288864388) internal successors, (16068), 11792 states have internal predecessors, (16068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:48:12,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11793 states to 11793 states and 16068 transitions. [2024-10-24 02:48:12,844 INFO L78 Accepts]: Start accepts. Automaton has 11793 states and 16068 transitions. Word has length 84 [2024-10-24 02:48:12,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:48:12,844 INFO L471 AbstractCegarLoop]: Abstraction has 11793 states and 16068 transitions. [2024-10-24 02:48:12,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 7.34375) internal successors, (235), 32 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:48:12,844 INFO L276 IsEmpty]: Start isEmpty. Operand 11793 states and 16068 transitions. [2024-10-24 02:48:12,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-10-24 02:48:12,845 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:48:12,845 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:48:12,858 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-24 02:48:13,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:48:13,049 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:48:13,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:48:13,050 INFO L85 PathProgramCache]: Analyzing trace with hash 111551184, now seen corresponding path program 1 times [2024-10-24 02:48:13,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:48:13,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001190726] [2024-10-24 02:48:13,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:48:13,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:48:13,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:48:13,266 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:48:13,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:48:13,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001190726] [2024-10-24 02:48:13,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001190726] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:48:13,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510753126] [2024-10-24 02:48:13,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:48:13,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:48:13,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:48:13,268 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 02:48:13,269 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 02:48:13,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:48:13,371 INFO L255 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-24 02:48:13,372 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:48:13,653 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:48:13,653 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 02:48:14,075 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:48:14,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510753126] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 02:48:14,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 02:48:14,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2024-10-24 02:48:14,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921793600] [2024-10-24 02:48:14,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 02:48:14,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-24 02:48:14,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:48:14,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-24 02:48:14,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2024-10-24 02:48:14,077 INFO L87 Difference]: Start difference. First operand 11793 states and 16068 transitions. Second operand has 22 states, 22 states have (on average 8.727272727272727) internal successors, (192), 21 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:48:15,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:48:15,141 INFO L93 Difference]: Finished difference Result 32398 states and 42936 transitions. [2024-10-24 02:48:15,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-24 02:48:15,142 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.727272727272727) internal successors, (192), 21 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2024-10-24 02:48:15,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:48:15,163 INFO L225 Difference]: With dead ends: 32398 [2024-10-24 02:48:15,163 INFO L226 Difference]: Without dead ends: 22823 [2024-10-24 02:48:15,172 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=253, Invalid=803, Unknown=0, NotChecked=0, Total=1056 [2024-10-24 02:48:15,172 INFO L432 NwaCegarLoop]: 1524 mSDtfsCounter, 12084 mSDsluCounter, 4825 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12084 SdHoareTripleChecker+Valid, 6349 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 02:48:15,172 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12084 Valid, 6349 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 02:48:15,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22823 states. [2024-10-24 02:48:15,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22823 to 22547. [2024-10-24 02:48:15,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22547 states, 22545 states have (on average 1.3147926369483256) internal successors, (29642), 22546 states have internal predecessors, (29642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:48:15,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22547 states to 22547 states and 29642 transitions. [2024-10-24 02:48:15,802 INFO L78 Accepts]: Start accepts. Automaton has 22547 states and 29642 transitions. Word has length 85 [2024-10-24 02:48:15,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:48:15,802 INFO L471 AbstractCegarLoop]: Abstraction has 22547 states and 29642 transitions. [2024-10-24 02:48:15,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.727272727272727) internal successors, (192), 21 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:48:15,802 INFO L276 IsEmpty]: Start isEmpty. Operand 22547 states and 29642 transitions. [2024-10-24 02:48:15,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-10-24 02:48:15,803 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:48:15,804 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:48:15,817 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-24 02:48:16,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-10-24 02:48:16,007 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:48:16,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:48:16,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1688504568, now seen corresponding path program 1 times [2024-10-24 02:48:16,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:48:16,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991825643] [2024-10-24 02:48:16,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:48:16,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:48:16,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:48:16,649 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:48:16,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:48:16,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991825643] [2024-10-24 02:48:16,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991825643] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:48:16,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17254483] [2024-10-24 02:48:16,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:48:16,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:48:16,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:48:16,651 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 02:48:16,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-24 02:48:16,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:48:16,768 INFO L255 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-10-24 02:48:16,770 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:48:18,250 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:48:18,251 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 02:48:20,095 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:48:20,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17254483] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 02:48:20,095 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 02:48:20,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17, 17] total 40 [2024-10-24 02:48:20,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288139336] [2024-10-24 02:48:20,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 02:48:20,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-10-24 02:48:20,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:48:20,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-10-24 02:48:20,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=1322, Unknown=0, NotChecked=0, Total=1560 [2024-10-24 02:48:20,096 INFO L87 Difference]: Start difference. First operand 22547 states and 29642 transitions. Second operand has 40 states, 40 states have (on average 5.975) internal successors, (239), 40 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:48:24,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:48:24,662 INFO L93 Difference]: Finished difference Result 47949 states and 61558 transitions. [2024-10-24 02:48:24,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-10-24 02:48:24,662 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 5.975) internal successors, (239), 40 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2024-10-24 02:48:24,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:48:24,702 INFO L225 Difference]: With dead ends: 47949 [2024-10-24 02:48:24,702 INFO L226 Difference]: Without dead ends: 40621 [2024-10-24 02:48:24,712 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1774 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1605, Invalid=4875, Unknown=0, NotChecked=0, Total=6480 [2024-10-24 02:48:24,712 INFO L432 NwaCegarLoop]: 1547 mSDtfsCounter, 16222 mSDsluCounter, 18386 mSDsCounter, 0 mSdLazyCounter, 1370 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16222 SdHoareTripleChecker+Valid, 19933 SdHoareTripleChecker+Invalid, 1433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-24 02:48:24,712 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16222 Valid, 19933 Invalid, 1433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1370 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-24 02:48:24,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40621 states. [2024-10-24 02:48:25,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40621 to 34599. [2024-10-24 02:48:25,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34599 states, 34597 states have (on average 1.2913836459808654) internal successors, (44678), 34598 states have internal predecessors, (44678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:48:25,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34599 states to 34599 states and 44678 transitions. [2024-10-24 02:48:25,899 INFO L78 Accepts]: Start accepts. Automaton has 34599 states and 44678 transitions. Word has length 86 [2024-10-24 02:48:25,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:48:25,899 INFO L471 AbstractCegarLoop]: Abstraction has 34599 states and 44678 transitions. [2024-10-24 02:48:25,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 5.975) internal successors, (239), 40 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:48:25,899 INFO L276 IsEmpty]: Start isEmpty. Operand 34599 states and 44678 transitions. [2024-10-24 02:48:25,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-10-24 02:48:25,901 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:48:25,901 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:48:25,913 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 02:48:26,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-10-24 02:48:26,101 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:48:26,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:48:26,102 INFO L85 PathProgramCache]: Analyzing trace with hash 698317048, now seen corresponding path program 1 times [2024-10-24 02:48:26,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:48:26,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028081382] [2024-10-24 02:48:26,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:48:26,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:48:26,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:48:26,584 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:48:26,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:48:26,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028081382] [2024-10-24 02:48:26,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028081382] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:48:26,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034499806] [2024-10-24 02:48:26,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:48:26,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:48:26,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:48:26,585 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 02:48:26,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-24 02:48:26,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:48:26,690 INFO L255 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-24 02:48:26,692 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:48:27,083 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:48:27,083 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 02:48:27,815 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:48:27,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034499806] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 02:48:27,816 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 02:48:27,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 34 [2024-10-24 02:48:27,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135142047] [2024-10-24 02:48:27,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 02:48:27,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-10-24 02:48:27,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:48:27,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-10-24 02:48:27,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=1020, Unknown=0, NotChecked=0, Total=1122 [2024-10-24 02:48:27,817 INFO L87 Difference]: Start difference. First operand 34599 states and 44678 transitions. Second operand has 34 states, 34 states have (on average 6.294117647058823) internal successors, (214), 34 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:48:31,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:48:31,675 INFO L93 Difference]: Finished difference Result 51149 states and 65897 transitions. [2024-10-24 02:48:31,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-10-24 02:48:31,675 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 6.294117647058823) internal successors, (214), 34 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2024-10-24 02:48:31,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:48:31,708 INFO L225 Difference]: With dead ends: 51149 [2024-10-24 02:48:31,708 INFO L226 Difference]: Without dead ends: 31597 [2024-10-24 02:48:31,718 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1146 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1384, Invalid=4468, Unknown=0, NotChecked=0, Total=5852 [2024-10-24 02:48:31,719 INFO L432 NwaCegarLoop]: 1530 mSDtfsCounter, 15250 mSDsluCounter, 24478 mSDsCounter, 0 mSdLazyCounter, 1932 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15250 SdHoareTripleChecker+Valid, 26008 SdHoareTripleChecker+Invalid, 1973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-24 02:48:31,719 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15250 Valid, 26008 Invalid, 1973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1932 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-24 02:48:31,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31597 states. [2024-10-24 02:48:32,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31597 to 26041. [2024-10-24 02:48:32,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26041 states, 26039 states have (on average 1.304274357694228) internal successors, (33962), 26040 states have internal predecessors, (33962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:48:32,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26041 states to 26041 states and 33962 transitions. [2024-10-24 02:48:32,754 INFO L78 Accepts]: Start accepts. Automaton has 26041 states and 33962 transitions. Word has length 86 [2024-10-24 02:48:32,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:48:32,754 INFO L471 AbstractCegarLoop]: Abstraction has 26041 states and 33962 transitions. [2024-10-24 02:48:32,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 6.294117647058823) internal successors, (214), 34 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:48:32,754 INFO L276 IsEmpty]: Start isEmpty. Operand 26041 states and 33962 transitions. [2024-10-24 02:48:32,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-10-24 02:48:32,758 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:48:32,758 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:48:32,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-24 02:48:32,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-10-24 02:48:32,959 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:48:32,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:48:32,960 INFO L85 PathProgramCache]: Analyzing trace with hash 213925849, now seen corresponding path program 1 times [2024-10-24 02:48:32,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:48:32,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192471812] [2024-10-24 02:48:32,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:48:32,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:48:32,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:48:33,138 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:48:33,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:48:33,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192471812] [2024-10-24 02:48:33,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192471812] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:48:33,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:48:33,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:48:33,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725732564] [2024-10-24 02:48:33,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:48:33,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 02:48:33,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:48:33,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 02:48:33,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 02:48:33,140 INFO L87 Difference]: Start difference. First operand 26041 states and 33962 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:48:37,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:48:37,878 INFO L93 Difference]: Finished difference Result 29798 states and 40960 transitions. [2024-10-24 02:48:37,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 02:48:37,878 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 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 120 [2024-10-24 02:48:37,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:48:37,901 INFO L225 Difference]: With dead ends: 29798 [2024-10-24 02:48:37,901 INFO L226 Difference]: Without dead ends: 28294 [2024-10-24 02:48:37,905 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 02:48:37,905 INFO L432 NwaCegarLoop]: 792 mSDtfsCounter, 2353 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 4792 mSolverCounterSat, 1179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2353 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 5971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1179 IncrementalHoareTripleChecker+Valid, 4792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-10-24 02:48:37,906 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2353 Valid, 811 Invalid, 5971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1179 Valid, 4792 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-10-24 02:48:37,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28294 states. [2024-10-24 02:48:38,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28294 to 28294. [2024-10-24 02:48:38,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28294 states, 28292 states have (on average 1.2919553230595222) internal successors, (36552), 28293 states have internal predecessors, (36552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:48:38,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28294 states to 28294 states and 36552 transitions. [2024-10-24 02:48:38,813 INFO L78 Accepts]: Start accepts. Automaton has 28294 states and 36552 transitions. Word has length 120 [2024-10-24 02:48:38,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:48:38,813 INFO L471 AbstractCegarLoop]: Abstraction has 28294 states and 36552 transitions. [2024-10-24 02:48:38,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:48:38,813 INFO L276 IsEmpty]: Start isEmpty. Operand 28294 states and 36552 transitions. [2024-10-24 02:48:38,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-10-24 02:48:38,820 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:48:38,820 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-24 02:48:38,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-10-24 02:48:38,820 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:48:38,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:48:38,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1948015120, now seen corresponding path program 1 times [2024-10-24 02:48:38,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:48:38,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147013959] [2024-10-24 02:48:38,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:48:38,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:48:38,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:48:39,468 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 22 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:48:39,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:48:39,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147013959] [2024-10-24 02:48:39,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147013959] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:48:39,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837836721] [2024-10-24 02:48:39,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:48:39,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:48:39,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:48:39,471 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 02:48:39,472 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 02:48:39,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:48:39,597 INFO L255 TraceCheckSpWp]: Trace formula consists of 593 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-10-24 02:48:39,599 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:48:40,682 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 47 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:48:40,682 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 02:48:43,037 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 47 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:48:43,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1837836721] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 02:48:43,038 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 02:48:43,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 18, 18] total 47 [2024-10-24 02:48:43,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959745841] [2024-10-24 02:48:43,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 02:48:43,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-10-24 02:48:43,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:48:43,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-10-24 02:48:43,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=1996, Unknown=0, NotChecked=0, Total=2256 [2024-10-24 02:48:43,039 INFO L87 Difference]: Start difference. First operand 28294 states and 36552 transitions. Second operand has 48 states, 48 states have (on average 7.583333333333333) internal successors, (364), 47 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 02:49:00,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:49:00,249 INFO L93 Difference]: Finished difference Result 82900 states and 106687 transitions. [2024-10-24 02:49:00,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2024-10-24 02:49:00,250 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 7.583333333333333) internal successors, (364), 47 states have internal predecessors, (364), 0 states have call successors, (0), 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 134 [2024-10-24 02:49:00,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:49:00,311 INFO L225 Difference]: With dead ends: 82900 [2024-10-24 02:49:00,312 INFO L226 Difference]: Without dead ends: 62426 [2024-10-24 02:49:00,327 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14930 ImplicationChecksByTransitivity, 14.4s TimeCoverageRelationStatistics Valid=6953, Invalid=36519, Unknown=0, NotChecked=0, Total=43472 [2024-10-24 02:49:00,328 INFO L432 NwaCegarLoop]: 1556 mSDtfsCounter, 28413 mSDsluCounter, 28467 mSDsCounter, 0 mSdLazyCounter, 3504 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28413 SdHoareTripleChecker+Valid, 30023 SdHoareTripleChecker+Invalid, 3670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 3504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-24 02:49:00,328 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28413 Valid, 30023 Invalid, 3670 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [166 Valid, 3504 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-24 02:49:00,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62426 states. [2024-10-24 02:49:02,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62426 to 48378. [2024-10-24 02:49:02,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48378 states, 48376 states have (on average 1.2809657681494957) internal successors, (61968), 48377 states have internal predecessors, (61968), 0 states have call successors, (0), 0 states 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 02:49:02,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48378 states to 48378 states and 61968 transitions. [2024-10-24 02:49:02,179 INFO L78 Accepts]: Start accepts. Automaton has 48378 states and 61968 transitions. Word has length 134 [2024-10-24 02:49:02,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:49:02,179 INFO L471 AbstractCegarLoop]: Abstraction has 48378 states and 61968 transitions. [2024-10-24 02:49:02,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 7.583333333333333) internal successors, (364), 47 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 02:49:02,180 INFO L276 IsEmpty]: Start isEmpty. Operand 48378 states and 61968 transitions. [2024-10-24 02:49:02,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-10-24 02:49:02,188 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:49:02,188 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:49:02,202 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-24 02:49:02,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:49:02,389 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:49:02,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:49:02,389 INFO L85 PathProgramCache]: Analyzing trace with hash 604530692, now seen corresponding path program 1 times [2024-10-24 02:49:02,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:49:02,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330541645] [2024-10-24 02:49:02,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:49:02,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:49:02,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat