./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.4_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 7faac2784283dee994e5ed7918d7d85d1512ca1f167512880a4c4b876443c5f9 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 04:47:04,442 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 04:47:04,541 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 04:47:04,547 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 04:47:04,548 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 04:47:04,584 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 04:47:04,585 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 04:47:04,585 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 04:47:04,586 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 04:47:04,590 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 04:47:04,590 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 04:47:04,591 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 04:47:04,591 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 04:47:04,592 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 04:47:04,592 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 04:47:04,592 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 04:47:04,592 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 04:47:04,593 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 04:47:04,593 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 04:47:04,593 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 04:47:04,594 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 04:47:04,596 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 04:47:04,597 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 04:47:04,597 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 04:47:04,598 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 04:47:04,598 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 04:47:04,598 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 04:47:04,599 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 04:47:04,599 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 04:47:04,600 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 04:47:04,600 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 04:47:04,601 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 04:47:04,601 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 04:47:04,602 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 04:47:04,602 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 04:47:04,602 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 04:47:04,603 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 04:47:04,603 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 04:47:04,603 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 04:47:04,603 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 04:47:04,604 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 04:47:04,604 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 04:47:04,604 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7faac2784283dee994e5ed7918d7d85d1512ca1f167512880a4c4b876443c5f9 [2024-10-11 04:47:04,880 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 04:47:04,906 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 04:47:04,909 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 04:47:04,910 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 04:47:04,911 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 04:47:04,912 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c [2024-10-11 04:47:06,385 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 04:47:06,844 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 04:47:06,845 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c [2024-10-11 04:47:06,879 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/5267e882e/d4a5517d1def4af88b602c98fac73da5/FLAG8f66b842c [2024-10-11 04:47:06,896 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/5267e882e/d4a5517d1def4af88b602c98fac73da5 [2024-10-11 04:47:06,899 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 04:47:06,900 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 04:47:06,901 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 04:47:06,903 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 04:47:06,909 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 04:47:06,910 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 04:47:06" (1/1) ... [2024-10-11 04:47:06,911 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a0e9e40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:47:06, skipping insertion in model container [2024-10-11 04:47:06,911 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 04:47:06" (1/1) ... [2024-10-11 04:47:07,022 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 04:47:07,374 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.4_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c[8786,8799] [2024-10-11 04:47:07,430 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.4_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c[16076,16089] [2024-10-11 04:47:08,234 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 04:47:08,249 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 04:47:08,286 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.4_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c[8786,8799] [2024-10-11 04:47:08,301 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.4_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c[16076,16089] [2024-10-11 04:47:08,764 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 04:47:08,805 INFO L204 MainTranslator]: Completed translation [2024-10-11 04:47:08,806 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:47:08 WrapperNode [2024-10-11 04:47:08,806 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 04:47:08,807 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 04:47:08,807 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 04:47:08,807 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 04:47:08,815 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:47:08" (1/1) ... [2024-10-11 04:47:08,868 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:47:08" (1/1) ... [2024-10-11 04:47:09,304 INFO L138 Inliner]: procedures = 36, calls = 21, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 5037 [2024-10-11 04:47:09,305 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 04:47:09,305 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 04:47:09,305 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 04:47:09,305 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 04:47:09,318 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:47:08" (1/1) ... [2024-10-11 04:47:09,319 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:47:08" (1/1) ... [2024-10-11 04:47:09,415 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:47:08" (1/1) ... [2024-10-11 04:47:09,546 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]. [2024-10-11 04:47:09,547 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:47:08" (1/1) ... [2024-10-11 04:47:09,547 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:47:08" (1/1) ... [2024-10-11 04:47:09,733 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:47:08" (1/1) ... [2024-10-11 04:47:09,771 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:47:08" (1/1) ... [2024-10-11 04:47:09,803 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:47:08" (1/1) ... [2024-10-11 04:47:09,822 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:47:08" (1/1) ... [2024-10-11 04:47:09,901 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 04:47:09,903 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 04:47:09,904 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 04:47:09,904 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 04:47:09,905 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:47:08" (1/1) ... [2024-10-11 04:47:09,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 04:47:09,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 04:47:09,940 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 04:47:09,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 04:47:09,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 04:47:09,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 04:47:09,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 04:47:09,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 04:47:10,102 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 04:47:10,104 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 04:47:14,527 INFO L? ?]: Removed 739 outVars from TransFormulas that were not future-live. [2024-10-11 04:47:14,527 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 04:47:14,599 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 04:47:14,599 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-11 04:47:14,600 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 04:47:14 BoogieIcfgContainer [2024-10-11 04:47:14,600 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 04:47:14,602 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 04:47:14,602 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 04:47:14,605 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 04:47:14,605 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 04:47:06" (1/3) ... [2024-10-11 04:47:14,607 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71fdeabe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 04:47:14, skipping insertion in model container [2024-10-11 04:47:14,608 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:47:08" (2/3) ... [2024-10-11 04:47:14,608 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71fdeabe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 04:47:14, skipping insertion in model container [2024-10-11 04:47:14,609 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 04:47:14" (3/3) ... [2024-10-11 04:47:14,610 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c [2024-10-11 04:47:14,627 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 04:47:14,627 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-11 04:47:14,732 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 04:47:14,739 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;@2ec70e3a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 04:47:14,739 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-11 04:47:14,750 INFO L276 IsEmpty]: Start isEmpty. Operand has 820 states, 817 states have (on average 1.97796817625459) internal successors, (1616), 819 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:14,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-10-11 04:47:14,761 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:47:14,761 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:47:14,762 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:47:14,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:47:14,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1425616648, now seen corresponding path program 1 times [2024-10-11 04:47:14,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:47:14,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493901651] [2024-10-11 04:47:14,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:47:14,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:47:14,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:47:15,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:47:15,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:47:15,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493901651] [2024-10-11 04:47:15,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493901651] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:47:15,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:47:15,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 04:47:15,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980276010] [2024-10-11 04:47:15,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:47:15,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 04:47:15,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:47:15,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 04:47:15,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 04:47:15,075 INFO L87 Difference]: Start difference. First operand has 820 states, 817 states have (on average 1.97796817625459) internal successors, (1616), 819 states have internal predecessors, (1616), 0 states have call successors, (0), 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 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:15,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:47:15,192 INFO L93 Difference]: Finished difference Result 1612 states and 3179 transitions. [2024-10-11 04:47:15,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 04:47:15,195 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2024-10-11 04:47:15,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:47:15,220 INFO L225 Difference]: With dead ends: 1612 [2024-10-11 04:47:15,220 INFO L226 Difference]: Without dead ends: 816 [2024-10-11 04:47:15,229 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 [2024-10-11 04:47:15,237 INFO L432 NwaCegarLoop]: 1544 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1544 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 04:47:15,238 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1544 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 04:47:15,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2024-10-11 04:47:15,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 816. [2024-10-11 04:47:15,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 816 states, 814 states have (on average 1.898034398034398) internal successors, (1545), 815 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:15,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1545 transitions. [2024-10-11 04:47:15,350 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1545 transitions. Word has length 19 [2024-10-11 04:47:15,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:47:15,351 INFO L471 AbstractCegarLoop]: Abstraction has 816 states and 1545 transitions. [2024-10-11 04:47:15,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:15,352 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1545 transitions. [2024-10-11 04:47:15,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-10-11 04:47:15,353 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:47:15,353 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:47:15,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 04:47:15,354 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:47:15,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:47:15,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1589486970, now seen corresponding path program 1 times [2024-10-11 04:47:15,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:47:15,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766392803] [2024-10-11 04:47:15,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:47:15,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:47:15,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:47:15,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:47:15,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:47:15,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766392803] [2024-10-11 04:47:15,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766392803] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:47:15,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:47:15,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 04:47:15,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483146857] [2024-10-11 04:47:15,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:47:15,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 04:47:15,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:47:15,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 04:47:15,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 04:47:15,538 INFO L87 Difference]: Start difference. First operand 816 states and 1545 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:15,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:47:15,623 INFO L93 Difference]: Finished difference Result 854 states and 1604 transitions. [2024-10-11 04:47:15,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 04:47:15,624 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2024-10-11 04:47:15,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:47:15,628 INFO L225 Difference]: With dead ends: 854 [2024-10-11 04:47:15,628 INFO L226 Difference]: Without dead ends: 816 [2024-10-11 04:47:15,629 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 [2024-10-11 04:47:15,630 INFO L432 NwaCegarLoop]: 1542 mSDtfsCounter, 0 mSDsluCounter, 3057 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4599 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 04:47:15,631 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4599 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 04:47:15,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2024-10-11 04:47:15,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 816. [2024-10-11 04:47:15,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 816 states, 814 states have (on average 1.8697788697788698) internal successors, (1522), 815 states have internal predecessors, (1522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:15,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1522 transitions. [2024-10-11 04:47:15,662 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1522 transitions. Word has length 19 [2024-10-11 04:47:15,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:47:15,662 INFO L471 AbstractCegarLoop]: Abstraction has 816 states and 1522 transitions. [2024-10-11 04:47:15,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:15,663 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1522 transitions. [2024-10-11 04:47:15,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-10-11 04:47:15,667 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:47:15,667 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] [2024-10-11 04:47:15,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 04:47:15,668 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:47:15,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:47:15,668 INFO L85 PathProgramCache]: Analyzing trace with hash 775575541, now seen corresponding path program 1 times [2024-10-11 04:47:15,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:47:15,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528324832] [2024-10-11 04:47:15,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:47:15,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:47:15,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:47:15,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:47:15,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:47:15,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528324832] [2024-10-11 04:47:15,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528324832] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:47:15,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:47:15,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 04:47:15,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898331659] [2024-10-11 04:47:15,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:47:15,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 04:47:15,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:47:15,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 04:47:15,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 04:47:15,945 INFO L87 Difference]: Start difference. First operand 816 states and 1522 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:16,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:47:16,194 INFO L93 Difference]: Finished difference Result 1096 states and 1970 transitions. [2024-10-11 04:47:16,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 04:47:16,194 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2024-10-11 04:47:16,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:47:16,199 INFO L225 Difference]: With dead ends: 1096 [2024-10-11 04:47:16,199 INFO L226 Difference]: Without dead ends: 1061 [2024-10-11 04:47:16,200 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-10-11 04:47:16,202 INFO L432 NwaCegarLoop]: 1515 mSDtfsCounter, 6246 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6246 SdHoareTripleChecker+Valid, 2155 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 04:47:16,204 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6246 Valid, 2155 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 04:47:16,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2024-10-11 04:47:16,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 849. [2024-10-11 04:47:16,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 847 states have (on average 1.859504132231405) internal successors, (1575), 848 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:16,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1575 transitions. [2024-10-11 04:47:16,230 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1575 transitions. Word has length 41 [2024-10-11 04:47:16,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:47:16,233 INFO L471 AbstractCegarLoop]: Abstraction has 849 states and 1575 transitions. [2024-10-11 04:47:16,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:16,234 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1575 transitions. [2024-10-11 04:47:16,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-10-11 04:47:16,236 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:47:16,237 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] [2024-10-11 04:47:16,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 04:47:16,237 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:47:16,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:47:16,239 INFO L85 PathProgramCache]: Analyzing trace with hash -2119825339, now seen corresponding path program 1 times [2024-10-11 04:47:16,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:47:16,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484644764] [2024-10-11 04:47:16,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:47:16,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:47:16,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:47:16,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:47:16,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:47:16,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484644764] [2024-10-11 04:47:16,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484644764] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:47:16,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:47:16,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 04:47:16,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298499070] [2024-10-11 04:47:16,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:47:16,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 04:47:16,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:47:16,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 04:47:16,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 04:47:16,368 INFO L87 Difference]: Start difference. First operand 849 states and 1575 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:16,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:47:16,409 INFO L93 Difference]: Finished difference Result 974 states and 1774 transitions. [2024-10-11 04:47:16,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 04:47:16,410 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2024-10-11 04:47:16,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:47:16,414 INFO L225 Difference]: With dead ends: 974 [2024-10-11 04:47:16,414 INFO L226 Difference]: Without dead ends: 906 [2024-10-11 04:47:16,417 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 [2024-10-11 04:47:16,419 INFO L432 NwaCegarLoop]: 1517 mSDtfsCounter, 1472 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 1567 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 [2024-10-11 04:47:16,420 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 1567 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 04:47:16,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2024-10-11 04:47:16,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 904. [2024-10-11 04:47:16,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 902 states have (on average 1.8414634146341464) internal successors, (1661), 903 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:16,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1661 transitions. [2024-10-11 04:47:16,443 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1661 transitions. Word has length 43 [2024-10-11 04:47:16,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:47:16,443 INFO L471 AbstractCegarLoop]: Abstraction has 904 states and 1661 transitions. [2024-10-11 04:47:16,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:16,443 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1661 transitions. [2024-10-11 04:47:16,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-10-11 04:47:16,445 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:47:16,445 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] [2024-10-11 04:47:16,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 04:47:16,448 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:47:16,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:47:16,449 INFO L85 PathProgramCache]: Analyzing trace with hash -2117680387, now seen corresponding path program 1 times [2024-10-11 04:47:16,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:47:16,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575777843] [2024-10-11 04:47:16,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:47:16,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:47:16,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:47:16,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:47:16,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:47:16,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575777843] [2024-10-11 04:47:16,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575777843] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:47:16,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:47:16,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 04:47:16,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396220859] [2024-10-11 04:47:16,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:47:16,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 04:47:16,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:47:16,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 04:47:16,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-11 04:47:16,737 INFO L87 Difference]: Start difference. First operand 904 states and 1661 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:16,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:47:16,888 INFO L93 Difference]: Finished difference Result 1029 states and 1857 transitions. [2024-10-11 04:47:16,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 04:47:16,889 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2024-10-11 04:47:16,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:47:16,893 INFO L225 Difference]: With dead ends: 1029 [2024-10-11 04:47:16,893 INFO L226 Difference]: Without dead ends: 906 [2024-10-11 04:47:16,895 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-10-11 04:47:16,895 INFO L432 NwaCegarLoop]: 1513 mSDtfsCounter, 4440 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4440 SdHoareTripleChecker+Valid, 1666 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 04:47:16,896 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4440 Valid, 1666 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 04:47:16,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2024-10-11 04:47:16,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 904. [2024-10-11 04:47:16,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 902 states have (on average 1.8392461197339247) internal successors, (1659), 903 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:16,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1659 transitions. [2024-10-11 04:47:16,917 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1659 transitions. Word has length 43 [2024-10-11 04:47:16,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:47:16,919 INFO L471 AbstractCegarLoop]: Abstraction has 904 states and 1659 transitions. [2024-10-11 04:47:16,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:16,920 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1659 transitions. [2024-10-11 04:47:16,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-10-11 04:47:16,921 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:47:16,922 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] [2024-10-11 04:47:16,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 04:47:16,923 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:47:16,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:47:16,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1351966150, now seen corresponding path program 1 times [2024-10-11 04:47:16,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:47:16,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866235010] [2024-10-11 04:47:16,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:47:16,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:47:16,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:47:17,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:47:17,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:47:17,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866235010] [2024-10-11 04:47:17,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866235010] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:47:17,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:47:17,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 04:47:17,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162307579] [2024-10-11 04:47:17,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:47:17,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 04:47:17,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:47:17,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 04:47:17,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 04:47:17,094 INFO L87 Difference]: Start difference. First operand 904 states and 1659 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:17,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:47:17,139 INFO L93 Difference]: Finished difference Result 910 states and 1666 transitions. [2024-10-11 04:47:17,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 04:47:17,140 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2024-10-11 04:47:17,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:47:17,146 INFO L225 Difference]: With dead ends: 910 [2024-10-11 04:47:17,147 INFO L226 Difference]: Without dead ends: 908 [2024-10-11 04:47:17,147 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 [2024-10-11 04:47:17,149 INFO L432 NwaCegarLoop]: 1518 mSDtfsCounter, 0 mSDsluCounter, 3028 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4546 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 [2024-10-11 04:47:17,149 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4546 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 04:47:17,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2024-10-11 04:47:17,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 908. [2024-10-11 04:47:17,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 908 states, 906 states have (on average 1.8344370860927153) internal successors, (1662), 907 states have internal predecessors, (1662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:17,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 1662 transitions. [2024-10-11 04:47:17,173 INFO L78 Accepts]: Start accepts. Automaton has 908 states and 1662 transitions. Word has length 44 [2024-10-11 04:47:17,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:47:17,174 INFO L471 AbstractCegarLoop]: Abstraction has 908 states and 1662 transitions. [2024-10-11 04:47:17,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:17,174 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states and 1662 transitions. [2024-10-11 04:47:17,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-10-11 04:47:17,175 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:47:17,175 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] [2024-10-11 04:47:17,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 04:47:17,175 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:47:17,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:47:17,176 INFO L85 PathProgramCache]: Analyzing trace with hash -302650947, now seen corresponding path program 1 times [2024-10-11 04:47:17,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:47:17,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677351402] [2024-10-11 04:47:17,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:47:17,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:47:17,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:47:17,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:47:17,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:47:17,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677351402] [2024-10-11 04:47:17,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677351402] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:47:17,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:47:17,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 04:47:17,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577681848] [2024-10-11 04:47:17,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:47:17,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 04:47:17,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:47:17,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 04:47:17,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 04:47:17,261 INFO L87 Difference]: Start difference. First operand 908 states and 1662 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:17,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:47:17,293 INFO L93 Difference]: Finished difference Result 1046 states and 1875 transitions. [2024-10-11 04:47:17,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 04:47:17,293 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2024-10-11 04:47:17,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:47:17,299 INFO L225 Difference]: With dead ends: 1046 [2024-10-11 04:47:17,299 INFO L226 Difference]: Without dead ends: 974 [2024-10-11 04:47:17,300 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 [2024-10-11 04:47:17,302 INFO L432 NwaCegarLoop]: 1559 mSDtfsCounter, 1484 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 1615 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 [2024-10-11 04:47:17,303 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1484 Valid, 1615 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 04:47:17,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2024-10-11 04:47:17,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 972. [2024-10-11 04:47:17,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 970 states have (on average 1.81340206185567) internal successors, (1759), 971 states have internal predecessors, (1759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:17,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1759 transitions. [2024-10-11 04:47:17,323 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1759 transitions. Word has length 45 [2024-10-11 04:47:17,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:47:17,323 INFO L471 AbstractCegarLoop]: Abstraction has 972 states and 1759 transitions. [2024-10-11 04:47:17,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:17,324 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1759 transitions. [2024-10-11 04:47:17,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-10-11 04:47:17,325 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:47:17,325 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] [2024-10-11 04:47:17,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 04:47:17,326 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:47:17,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:47:17,326 INFO L85 PathProgramCache]: Analyzing trace with hash -888363075, now seen corresponding path program 1 times [2024-10-11 04:47:17,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:47:17,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817905416] [2024-10-11 04:47:17,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:47:17,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:47:17,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:47:17,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:47:17,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:47:17,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817905416] [2024-10-11 04:47:17,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817905416] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:47:17,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:47:17,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 04:47:17,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044457637] [2024-10-11 04:47:17,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:47:17,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 04:47:17,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:47:17,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 04:47:17,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 04:47:17,399 INFO L87 Difference]: Start difference. First operand 972 states and 1759 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:17,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:47:17,447 INFO L93 Difference]: Finished difference Result 1326 states and 2299 transitions. [2024-10-11 04:47:17,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 04:47:17,448 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2024-10-11 04:47:17,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:47:17,454 INFO L225 Difference]: With dead ends: 1326 [2024-10-11 04:47:17,454 INFO L226 Difference]: Without dead ends: 1137 [2024-10-11 04:47:17,455 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 [2024-10-11 04:47:17,456 INFO L432 NwaCegarLoop]: 1551 mSDtfsCounter, 1480 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 1615 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 [2024-10-11 04:47:17,457 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 1615 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 04:47:17,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1137 states. [2024-10-11 04:47:17,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1137 to 1135. [2024-10-11 04:47:17,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1135 states, 1133 states have (on average 1.766107678729038) internal successors, (2001), 1134 states have internal predecessors, (2001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:17,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 2001 transitions. [2024-10-11 04:47:17,491 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 2001 transitions. Word has length 45 [2024-10-11 04:47:17,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:47:17,492 INFO L471 AbstractCegarLoop]: Abstraction has 1135 states and 2001 transitions. [2024-10-11 04:47:17,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:17,524 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 2001 transitions. [2024-10-11 04:47:17,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-10-11 04:47:17,525 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:47:17,525 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] [2024-10-11 04:47:17,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-11 04:47:17,525 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:47:17,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:47:17,526 INFO L85 PathProgramCache]: Analyzing trace with hash 370365, now seen corresponding path program 1 times [2024-10-11 04:47:17,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:47:17,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839663102] [2024-10-11 04:47:17,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:47:17,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:47:17,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:47:17,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:47:17,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:47:17,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839663102] [2024-10-11 04:47:17,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839663102] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:47:17,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:47:17,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 04:47:17,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296942092] [2024-10-11 04:47:17,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:47:17,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 04:47:17,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:47:17,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 04:47:17,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 04:47:17,598 INFO L87 Difference]: Start difference. First operand 1135 states and 2001 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:17,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:47:17,641 INFO L93 Difference]: Finished difference Result 1791 states and 2983 transitions. [2024-10-11 04:47:17,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 04:47:17,642 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2024-10-11 04:47:17,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:47:17,649 INFO L225 Difference]: With dead ends: 1791 [2024-10-11 04:47:17,650 INFO L226 Difference]: Without dead ends: 1439 [2024-10-11 04:47:17,651 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 [2024-10-11 04:47:17,652 INFO L432 NwaCegarLoop]: 1549 mSDtfsCounter, 1478 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1478 SdHoareTripleChecker+Valid, 1617 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 [2024-10-11 04:47:17,653 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1478 Valid, 1617 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 04:47:17,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1439 states. [2024-10-11 04:47:17,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1439 to 1437. [2024-10-11 04:47:17,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1437 states, 1435 states have (on average 1.6982578397212544) internal successors, (2437), 1436 states have internal predecessors, (2437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:17,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1437 states to 1437 states and 2437 transitions. [2024-10-11 04:47:17,688 INFO L78 Accepts]: Start accepts. Automaton has 1437 states and 2437 transitions. Word has length 45 [2024-10-11 04:47:17,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:47:17,689 INFO L471 AbstractCegarLoop]: Abstraction has 1437 states and 2437 transitions. [2024-10-11 04:47:17,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:17,690 INFO L276 IsEmpty]: Start isEmpty. Operand 1437 states and 2437 transitions. [2024-10-11 04:47:17,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-10-11 04:47:17,690 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:47:17,691 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:47:17,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-11 04:47:17,691 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:47:17,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:47:17,692 INFO L85 PathProgramCache]: Analyzing trace with hash -262707011, now seen corresponding path program 1 times [2024-10-11 04:47:17,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:47:17,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016846607] [2024-10-11 04:47:17,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:47:17,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:47:17,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:47:17,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:47:17,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:47:17,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016846607] [2024-10-11 04:47:17,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016846607] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:47:17,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:47:17,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 04:47:17,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974055773] [2024-10-11 04:47:17,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:47:17,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 04:47:17,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:47:17,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 04:47:17,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 04:47:17,757 INFO L87 Difference]: Start difference. First operand 1437 states and 2437 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:17,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:47:17,812 INFO L93 Difference]: Finished difference Result 2649 states and 4207 transitions. [2024-10-11 04:47:17,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 04:47:17,813 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2024-10-11 04:47:17,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:47:17,820 INFO L225 Difference]: With dead ends: 2649 [2024-10-11 04:47:17,821 INFO L226 Difference]: Without dead ends: 1995 [2024-10-11 04:47:17,822 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 [2024-10-11 04:47:17,823 INFO L432 NwaCegarLoop]: 1561 mSDtfsCounter, 1482 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 1621 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 [2024-10-11 04:47:17,824 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 1621 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 04:47:17,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1995 states. [2024-10-11 04:47:17,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1995 to 1993. [2024-10-11 04:47:17,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1993 states, 1991 states have (on average 1.6137619286790557) internal successors, (3213), 1992 states have internal predecessors, (3213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:17,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1993 states to 1993 states and 3213 transitions. [2024-10-11 04:47:17,898 INFO L78 Accepts]: Start accepts. Automaton has 1993 states and 3213 transitions. Word has length 45 [2024-10-11 04:47:17,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:47:17,899 INFO L471 AbstractCegarLoop]: Abstraction has 1993 states and 3213 transitions. [2024-10-11 04:47:17,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:17,899 INFO L276 IsEmpty]: Start isEmpty. Operand 1993 states and 3213 transitions. [2024-10-11 04:47:17,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-11 04:47:17,901 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:47:17,901 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] [2024-10-11 04:47:17,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-11 04:47:17,901 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:47:17,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:47:17,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1070420117, now seen corresponding path program 1 times [2024-10-11 04:47:17,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:47:17,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323301448] [2024-10-11 04:47:17,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:47:17,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:47:17,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:47:18,063 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 04:47:18,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:47:18,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323301448] [2024-10-11 04:47:18,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323301448] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:47:18,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:47:18,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 04:47:18,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319897966] [2024-10-11 04:47:18,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:47:18,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 04:47:18,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:47:18,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 04:47:18,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 04:47:18,066 INFO L87 Difference]: Start difference. First operand 1993 states and 3213 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:18,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:47:18,264 INFO L93 Difference]: Finished difference Result 6755 states and 10074 transitions. [2024-10-11 04:47:18,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 04:47:18,265 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 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 61 [2024-10-11 04:47:18,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:47:18,287 INFO L225 Difference]: With dead ends: 6755 [2024-10-11 04:47:18,288 INFO L226 Difference]: Without dead ends: 5889 [2024-10-11 04:47:18,293 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-10-11 04:47:18,294 INFO L432 NwaCegarLoop]: 1566 mSDtfsCounter, 4637 mSDsluCounter, 1718 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4637 SdHoareTripleChecker+Valid, 3284 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 04:47:18,294 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4637 Valid, 3284 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 04:47:18,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5889 states. [2024-10-11 04:47:18,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5889 to 3033. [2024-10-11 04:47:18,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3033 states, 3031 states have (on average 1.5483338832068625) internal successors, (4693), 3032 states have internal predecessors, (4693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:18,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3033 states to 3033 states and 4693 transitions. [2024-10-11 04:47:18,403 INFO L78 Accepts]: Start accepts. Automaton has 3033 states and 4693 transitions. Word has length 61 [2024-10-11 04:47:18,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:47:18,403 INFO L471 AbstractCegarLoop]: Abstraction has 3033 states and 4693 transitions. [2024-10-11 04:47:18,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:18,403 INFO L276 IsEmpty]: Start isEmpty. Operand 3033 states and 4693 transitions. [2024-10-11 04:47:18,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-11 04:47:18,404 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:47:18,405 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] [2024-10-11 04:47:18,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-11 04:47:18,405 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:47:18,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:47:18,405 INFO L85 PathProgramCache]: Analyzing trace with hash 484707989, now seen corresponding path program 1 times [2024-10-11 04:47:18,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:47:18,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107413678] [2024-10-11 04:47:18,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:47:18,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:47:18,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:47:18,531 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 04:47:18,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:47:18,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107413678] [2024-10-11 04:47:18,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107413678] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:47:18,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:47:18,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 04:47:18,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508978225] [2024-10-11 04:47:18,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:47:18,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 04:47:18,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:47:18,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 04:47:18,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 04:47:18,535 INFO L87 Difference]: Start difference. First operand 3033 states and 4693 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:18,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:47:18,825 INFO L93 Difference]: Finished difference Result 7963 states and 11802 transitions. [2024-10-11 04:47:18,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 04:47:18,826 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 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 61 [2024-10-11 04:47:18,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:47:18,851 INFO L225 Difference]: With dead ends: 7963 [2024-10-11 04:47:18,851 INFO L226 Difference]: Without dead ends: 6753 [2024-10-11 04:47:18,855 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-10-11 04:47:18,855 INFO L432 NwaCegarLoop]: 1566 mSDtfsCounter, 4672 mSDsluCounter, 1738 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4672 SdHoareTripleChecker+Valid, 3304 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 04:47:18,856 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4672 Valid, 3304 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 04:47:18,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6753 states. [2024-10-11 04:47:19,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6753 to 4673. [2024-10-11 04:47:19,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4673 states, 4671 states have (on average 1.5031042603296938) internal successors, (7021), 4672 states have internal predecessors, (7021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:19,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4673 states to 4673 states and 7021 transitions. [2024-10-11 04:47:19,078 INFO L78 Accepts]: Start accepts. Automaton has 4673 states and 7021 transitions. Word has length 61 [2024-10-11 04:47:19,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:47:19,079 INFO L471 AbstractCegarLoop]: Abstraction has 4673 states and 7021 transitions. [2024-10-11 04:47:19,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:19,079 INFO L276 IsEmpty]: Start isEmpty. Operand 4673 states and 7021 transitions. [2024-10-11 04:47:19,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-11 04:47:19,080 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:47:19,081 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] [2024-10-11 04:47:19,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-11 04:47:19,081 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:47:19,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:47:19,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1373441429, now seen corresponding path program 1 times [2024-10-11 04:47:19,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:47:19,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192613672] [2024-10-11 04:47:19,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:47:19,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:47:19,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:47:19,224 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-11 04:47:19,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:47:19,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192613672] [2024-10-11 04:47:19,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192613672] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:47:19,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:47:19,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 04:47:19,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973606319] [2024-10-11 04:47:19,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:47:19,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 04:47:19,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:47:19,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 04:47:19,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 04:47:19,228 INFO L87 Difference]: Start difference. First operand 4673 states and 7021 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 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) [2024-10-11 04:47:19,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:47:19,565 INFO L93 Difference]: Finished difference Result 9171 states and 13522 transitions. [2024-10-11 04:47:19,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 04:47:19,566 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 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 61 [2024-10-11 04:47:19,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:47:19,586 INFO L225 Difference]: With dead ends: 9171 [2024-10-11 04:47:19,587 INFO L226 Difference]: Without dead ends: 7961 [2024-10-11 04:47:19,593 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-10-11 04:47:19,594 INFO L432 NwaCegarLoop]: 1566 mSDtfsCounter, 4667 mSDsluCounter, 1752 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4667 SdHoareTripleChecker+Valid, 3318 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 04:47:19,594 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4667 Valid, 3318 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 04:47:19,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7961 states. [2024-10-11 04:47:19,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7961 to 5881. [2024-10-11 04:47:19,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5881 states, 5879 states have (on average 1.4868174859670011) internal successors, (8741), 5880 states have internal predecessors, (8741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:19,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5881 states to 5881 states and 8741 transitions. [2024-10-11 04:47:19,878 INFO L78 Accepts]: Start accepts. Automaton has 5881 states and 8741 transitions. Word has length 61 [2024-10-11 04:47:19,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:47:19,879 INFO L471 AbstractCegarLoop]: Abstraction has 5881 states and 8741 transitions. [2024-10-11 04:47:19,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 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) [2024-10-11 04:47:19,879 INFO L276 IsEmpty]: Start isEmpty. Operand 5881 states and 8741 transitions. [2024-10-11 04:47:19,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-11 04:47:19,881 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:47:19,881 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] [2024-10-11 04:47:19,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-11 04:47:19,881 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:47:19,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:47:19,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1110364053, now seen corresponding path program 1 times [2024-10-11 04:47:19,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:47:19,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314568721] [2024-10-11 04:47:19,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:47:19,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:47:19,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:47:20,000 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 04:47:20,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:47:20,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314568721] [2024-10-11 04:47:20,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314568721] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:47:20,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:47:20,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 04:47:20,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20822987] [2024-10-11 04:47:20,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:47:20,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 04:47:20,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:47:20,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 04:47:20,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 04:47:20,003 INFO L87 Difference]: Start difference. First operand 5881 states and 8741 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:20,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:47:20,327 INFO L93 Difference]: Finished difference Result 10379 states and 15242 transitions. [2024-10-11 04:47:20,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 04:47:20,328 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 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 61 [2024-10-11 04:47:20,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:47:20,344 INFO L225 Difference]: With dead ends: 10379 [2024-10-11 04:47:20,344 INFO L226 Difference]: Without dead ends: 9169 [2024-10-11 04:47:20,347 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-10-11 04:47:20,348 INFO L432 NwaCegarLoop]: 1565 mSDtfsCounter, 4639 mSDsluCounter, 1774 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4639 SdHoareTripleChecker+Valid, 3339 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 04:47:20,348 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4639 Valid, 3339 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 04:47:20,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9169 states. [2024-10-11 04:47:20,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9169 to 7089. [2024-10-11 04:47:20,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7089 states, 7087 states have (on average 1.4760829688161423) internal successors, (10461), 7088 states have internal predecessors, (10461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:20,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7089 states to 7089 states and 10461 transitions. [2024-10-11 04:47:20,551 INFO L78 Accepts]: Start accepts. Automaton has 7089 states and 10461 transitions. Word has length 61 [2024-10-11 04:47:20,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:47:20,551 INFO L471 AbstractCegarLoop]: Abstraction has 7089 states and 10461 transitions. [2024-10-11 04:47:20,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:20,551 INFO L276 IsEmpty]: Start isEmpty. Operand 7089 states and 10461 transitions. [2024-10-11 04:47:20,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-10-11 04:47:20,554 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:47:20,554 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] [2024-10-11 04:47:20,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-11 04:47:20,555 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:47:20,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:47:20,555 INFO L85 PathProgramCache]: Analyzing trace with hash -263811695, now seen corresponding path program 1 times [2024-10-11 04:47:20,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:47:20,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440143972] [2024-10-11 04:47:20,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:47:20,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:47:20,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:47:20,652 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:47:20,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:47:20,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440143972] [2024-10-11 04:47:20,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440143972] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:47:20,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:47:20,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 04:47:20,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964297971] [2024-10-11 04:47:20,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:47:20,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 04:47:20,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:47:20,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 04:47:20,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 04:47:20,655 INFO L87 Difference]: Start difference. First operand 7089 states and 10461 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:20,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:47:20,808 INFO L93 Difference]: Finished difference Result 13397 states and 19455 transitions. [2024-10-11 04:47:20,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 04:47:20,809 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-10-11 04:47:20,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:47:20,822 INFO L225 Difference]: With dead ends: 13397 [2024-10-11 04:47:20,822 INFO L226 Difference]: Without dead ends: 7091 [2024-10-11 04:47:20,830 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 [2024-10-11 04:47:20,831 INFO L432 NwaCegarLoop]: 1545 mSDtfsCounter, 37 mSDsluCounter, 1508 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 3053 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 [2024-10-11 04:47:20,833 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 3053 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 04:47:20,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7091 states. [2024-10-11 04:47:20,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7091 to 7089. [2024-10-11 04:47:21,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7089 states, 7087 states have (on average 1.4585861436432905) internal successors, (10337), 7088 states have internal predecessors, (10337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:21,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7089 states to 7089 states and 10337 transitions. [2024-10-11 04:47:21,018 INFO L78 Accepts]: Start accepts. Automaton has 7089 states and 10337 transitions. Word has length 62 [2024-10-11 04:47:21,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:47:21,019 INFO L471 AbstractCegarLoop]: Abstraction has 7089 states and 10337 transitions. [2024-10-11 04:47:21,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:21,019 INFO L276 IsEmpty]: Start isEmpty. Operand 7089 states and 10337 transitions. [2024-10-11 04:47:21,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-10-11 04:47:21,020 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:47:21,021 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:47:21,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-11 04:47:21,021 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:47:21,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:47:21,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1794718171, now seen corresponding path program 1 times [2024-10-11 04:47:21,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:47:21,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248023334] [2024-10-11 04:47:21,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:47:21,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:47:21,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:47:21,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:47:21,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:47:21,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248023334] [2024-10-11 04:47:21,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248023334] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:47:21,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:47:21,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 04:47:21,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493519616] [2024-10-11 04:47:21,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:47:21,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 04:47:21,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:47:21,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 04:47:21,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 04:47:21,095 INFO L87 Difference]: Start difference. First operand 7089 states and 10337 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:24,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:47:24,536 INFO L93 Difference]: Finished difference Result 8593 states and 13210 transitions. [2024-10-11 04:47:24,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 04:47:24,537 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-10-11 04:47:24,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:47:24,552 INFO L225 Difference]: With dead ends: 8593 [2024-10-11 04:47:24,552 INFO L226 Difference]: Without dead ends: 7840 [2024-10-11 04:47:24,556 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 [2024-10-11 04:47:24,556 INFO L432 NwaCegarLoop]: 548 mSDtfsCounter, 822 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2264 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 822 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 2916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-10-11 04:47:24,557 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [822 Valid, 555 Invalid, 2916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2264 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-10-11 04:47:24,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7840 states. [2024-10-11 04:47:24,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7840 to 7840. [2024-10-11 04:47:24,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7840 states, 7838 states have (on average 1.443735646848686) internal successors, (11316), 7839 states have internal predecessors, (11316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:24,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7840 states to 7840 states and 11316 transitions. [2024-10-11 04:47:24,760 INFO L78 Accepts]: Start accepts. Automaton has 7840 states and 11316 transitions. Word has length 62 [2024-10-11 04:47:24,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:47:24,760 INFO L471 AbstractCegarLoop]: Abstraction has 7840 states and 11316 transitions. [2024-10-11 04:47:24,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:24,761 INFO L276 IsEmpty]: Start isEmpty. Operand 7840 states and 11316 transitions. [2024-10-11 04:47:24,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-10-11 04:47:24,762 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:47:24,762 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] [2024-10-11 04:47:24,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-11 04:47:24,763 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:47:24,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:47:24,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1786499741, now seen corresponding path program 1 times [2024-10-11 04:47:24,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:47:24,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180676573] [2024-10-11 04:47:24,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:47:24,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:47:24,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:47:24,853 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:47:24,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:47:24,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180676573] [2024-10-11 04:47:24,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180676573] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:47:24,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:47:24,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 04:47:24,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664561512] [2024-10-11 04:47:24,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:47:24,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 04:47:24,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:47:24,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 04:47:24,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 04:47:24,856 INFO L87 Difference]: Start difference. First operand 7840 states and 11316 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:24,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:47:24,946 INFO L93 Difference]: Finished difference Result 10236 states and 14723 transitions. [2024-10-11 04:47:24,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 04:47:24,946 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2024-10-11 04:47:24,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:47:24,954 INFO L225 Difference]: With dead ends: 10236 [2024-10-11 04:47:24,955 INFO L226 Difference]: Without dead ends: 3930 [2024-10-11 04:47:24,961 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 [2024-10-11 04:47:24,962 INFO L432 NwaCegarLoop]: 1543 mSDtfsCounter, 31 mSDsluCounter, 1507 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 3050 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 [2024-10-11 04:47:24,962 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 3050 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 04:47:24,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3930 states. [2024-10-11 04:47:25,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3930 to 3923. [2024-10-11 04:47:25,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3923 states, 3921 states have (on average 1.479979597041571) internal successors, (5803), 3922 states have internal predecessors, (5803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:25,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3923 states to 3923 states and 5803 transitions. [2024-10-11 04:47:25,048 INFO L78 Accepts]: Start accepts. Automaton has 3923 states and 5803 transitions. Word has length 63 [2024-10-11 04:47:25,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:47:25,049 INFO L471 AbstractCegarLoop]: Abstraction has 3923 states and 5803 transitions. [2024-10-11 04:47:25,049 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:25,049 INFO L276 IsEmpty]: Start isEmpty. Operand 3923 states and 5803 transitions. [2024-10-11 04:47:25,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-10-11 04:47:25,050 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:47:25,050 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] [2024-10-11 04:47:25,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-11 04:47:25,050 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:47:25,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:47:25,051 INFO L85 PathProgramCache]: Analyzing trace with hash 884488671, now seen corresponding path program 1 times [2024-10-11 04:47:25,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:47:25,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292047225] [2024-10-11 04:47:25,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:47:25,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:47:25,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:47:25,177 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:47:25,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:47:25,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292047225] [2024-10-11 04:47:25,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292047225] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:47:25,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:47:25,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 04:47:25,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955067240] [2024-10-11 04:47:25,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:47:25,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 04:47:25,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:47:25,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 04:47:25,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 04:47:25,179 INFO L87 Difference]: Start difference. First operand 3923 states and 5803 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 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) [2024-10-11 04:47:25,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:47:25,231 INFO L93 Difference]: Finished difference Result 5115 states and 7477 transitions. [2024-10-11 04:47:25,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 04:47:25,232 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 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 64 [2024-10-11 04:47:25,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:47:25,237 INFO L225 Difference]: With dead ends: 5115 [2024-10-11 04:47:25,238 INFO L226 Difference]: Without dead ends: 2737 [2024-10-11 04:47:25,240 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 [2024-10-11 04:47:25,241 INFO L432 NwaCegarLoop]: 1537 mSDtfsCounter, 33 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 3029 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 [2024-10-11 04:47:25,241 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 3029 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 04:47:25,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2737 states. [2024-10-11 04:47:25,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2737 to 2735. [2024-10-11 04:47:25,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2735 states, 2733 states have (on average 1.5034760336626418) internal successors, (4109), 2734 states have internal predecessors, (4109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:25,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2735 states to 2735 states and 4109 transitions. [2024-10-11 04:47:25,296 INFO L78 Accepts]: Start accepts. Automaton has 2735 states and 4109 transitions. Word has length 64 [2024-10-11 04:47:25,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:47:25,296 INFO L471 AbstractCegarLoop]: Abstraction has 2735 states and 4109 transitions. [2024-10-11 04:47:25,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 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) [2024-10-11 04:47:25,296 INFO L276 IsEmpty]: Start isEmpty. Operand 2735 states and 4109 transitions. [2024-10-11 04:47:25,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-11 04:47:25,297 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:47:25,297 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] [2024-10-11 04:47:25,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-11 04:47:25,298 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:47:25,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:47:25,298 INFO L85 PathProgramCache]: Analyzing trace with hash 841150381, now seen corresponding path program 1 times [2024-10-11 04:47:25,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:47:25,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166171390] [2024-10-11 04:47:25,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:47:25,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:47:25,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:47:25,373 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:47:25,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:47:25,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166171390] [2024-10-11 04:47:25,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166171390] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:47:25,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:47:25,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 04:47:25,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847273034] [2024-10-11 04:47:25,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:47:25,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 04:47:25,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:47:25,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 04:47:25,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 04:47:25,375 INFO L87 Difference]: Start difference. First operand 2735 states and 4109 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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) [2024-10-11 04:47:25,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:47:25,415 INFO L93 Difference]: Finished difference Result 3333 states and 4936 transitions. [2024-10-11 04:47:25,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 04:47:25,415 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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 66 [2024-10-11 04:47:25,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:47:25,420 INFO L225 Difference]: With dead ends: 3333 [2024-10-11 04:47:25,420 INFO L226 Difference]: Without dead ends: 2143 [2024-10-11 04:47:25,422 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 [2024-10-11 04:47:25,422 INFO L432 NwaCegarLoop]: 1530 mSDtfsCounter, 30 mSDsluCounter, 1484 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 3014 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 [2024-10-11 04:47:25,423 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 3014 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 04:47:25,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2143 states. [2024-10-11 04:47:25,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2143 to 2141. [2024-10-11 04:47:25,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2141 states, 2139 states have (on average 1.5301542776998598) internal successors, (3273), 2140 states have internal predecessors, (3273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:25,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2141 states to 2141 states and 3273 transitions. [2024-10-11 04:47:25,460 INFO L78 Accepts]: Start accepts. Automaton has 2141 states and 3273 transitions. Word has length 66 [2024-10-11 04:47:25,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:47:25,461 INFO L471 AbstractCegarLoop]: Abstraction has 2141 states and 3273 transitions. [2024-10-11 04:47:25,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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) [2024-10-11 04:47:25,461 INFO L276 IsEmpty]: Start isEmpty. Operand 2141 states and 3273 transitions. [2024-10-11 04:47:25,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-10-11 04:47:25,462 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:47:25,462 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] [2024-10-11 04:47:25,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-11 04:47:25,463 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:47:25,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:47:25,464 INFO L85 PathProgramCache]: Analyzing trace with hash -136343813, now seen corresponding path program 1 times [2024-10-11 04:47:25,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:47:25,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575372835] [2024-10-11 04:47:25,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:47:25,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:47:25,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:47:28,793 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:47:28,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:47:28,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575372835] [2024-10-11 04:47:28,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575372835] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 04:47:28,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213517890] [2024-10-11 04:47:28,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:47:28,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 04:47:28,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 04:47:28,797 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 04:47:28,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 04:47:28,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:47:28,917 INFO L255 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 04:47:28,923 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 04:47:29,472 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:47:29,472 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 04:47:30,307 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:47:30,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [213517890] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 04:47:30,308 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 04:47:30,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2024-10-11 04:47:30,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869249353] [2024-10-11 04:47:30,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 04:47:30,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-11 04:47:30,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:47:30,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-11 04:47:30,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=669, Unknown=0, NotChecked=0, Total=756 [2024-10-11 04:47:30,310 INFO L87 Difference]: Start difference. First operand 2141 states and 3273 transitions. Second operand has 28 states, 28 states have (on average 6.321428571428571) internal successors, (177), 27 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:34,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:47:34,101 INFO L93 Difference]: Finished difference Result 5147 states and 7394 transitions. [2024-10-11 04:47:34,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-10-11 04:47:34,102 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 6.321428571428571) internal successors, (177), 27 states have internal predecessors, (177), 0 states have call successors, (0), 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 68 [2024-10-11 04:47:34,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:47:34,109 INFO L225 Difference]: With dead ends: 5147 [2024-10-11 04:47:34,110 INFO L226 Difference]: Without dead ends: 4551 [2024-10-11 04:47:34,113 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1184 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1055, Invalid=4201, Unknown=0, NotChecked=0, Total=5256 [2024-10-11 04:47:34,114 INFO L432 NwaCegarLoop]: 1482 mSDtfsCounter, 23378 mSDsluCounter, 4852 mSDsCounter, 0 mSdLazyCounter, 829 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23378 SdHoareTripleChecker+Valid, 6334 SdHoareTripleChecker+Invalid, 866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-11 04:47:34,114 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23378 Valid, 6334 Invalid, 866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 829 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-11 04:47:34,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4551 states. [2024-10-11 04:47:34,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4551 to 4451. [2024-10-11 04:47:34,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4451 states, 4449 states have (on average 1.4254888739042482) internal successors, (6342), 4450 states have internal predecessors, (6342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:34,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4451 states to 4451 states and 6342 transitions. [2024-10-11 04:47:34,312 INFO L78 Accepts]: Start accepts. Automaton has 4451 states and 6342 transitions. Word has length 68 [2024-10-11 04:47:34,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:47:34,312 INFO L471 AbstractCegarLoop]: Abstraction has 4451 states and 6342 transitions. [2024-10-11 04:47:34,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.321428571428571) internal successors, (177), 27 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:34,313 INFO L276 IsEmpty]: Start isEmpty. Operand 4451 states and 6342 transitions. [2024-10-11 04:47:34,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-10-11 04:47:34,314 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:47:34,314 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:47:34,333 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-11 04:47:34,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 04:47:34,516 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:47:34,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:47:34,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1122884927, now seen corresponding path program 1 times [2024-10-11 04:47:34,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:47:34,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865992094] [2024-10-11 04:47:34,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:47:34,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:47:34,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:47:35,756 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:47:35,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:47:35,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865992094] [2024-10-11 04:47:35,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865992094] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 04:47:35,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785361783] [2024-10-11 04:47:35,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:47:35,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 04:47:35,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 04:47:35,758 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 04:47:35,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 04:47:35,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:47:35,854 INFO L255 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-11 04:47:35,856 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 04:47:36,173 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:47:36,173 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 04:47:37,000 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:47:37,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785361783] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 04:47:37,001 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 04:47:37,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 28 [2024-10-11 04:47:37,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072631832] [2024-10-11 04:47:37,002 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 04:47:37,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-10-11 04:47:37,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:47:37,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-10-11 04:47:37,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2024-10-11 04:47:37,004 INFO L87 Difference]: Start difference. First operand 4451 states and 6342 transitions. Second operand has 29 states, 29 states have (on average 5.9655172413793105) internal successors, (173), 28 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:38,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:47:38,706 INFO L93 Difference]: Finished difference Result 15685 states and 21364 transitions. [2024-10-11 04:47:38,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-10-11 04:47:38,706 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.9655172413793105) internal successors, (173), 28 states have internal predecessors, (173), 0 states have call successors, (0), 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 69 [2024-10-11 04:47:38,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:47:38,733 INFO L225 Difference]: With dead ends: 15685 [2024-10-11 04:47:38,733 INFO L226 Difference]: Without dead ends: 12779 [2024-10-11 04:47:38,743 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 752 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=665, Invalid=2527, Unknown=0, NotChecked=0, Total=3192 [2024-10-11 04:47:38,744 INFO L432 NwaCegarLoop]: 1492 mSDtfsCounter, 17108 mSDsluCounter, 4926 mSDsCounter, 0 mSdLazyCounter, 891 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17108 SdHoareTripleChecker+Valid, 6418 SdHoareTripleChecker+Invalid, 914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-11 04:47:38,745 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17108 Valid, 6418 Invalid, 914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 891 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-11 04:47:38,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12779 states. [2024-10-11 04:47:39,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12779 to 12679. [2024-10-11 04:47:39,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12679 states, 12677 states have (on average 1.3575767137335333) internal successors, (17210), 12678 states have internal predecessors, (17210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:39,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12679 states to 12679 states and 17210 transitions. [2024-10-11 04:47:39,134 INFO L78 Accepts]: Start accepts. Automaton has 12679 states and 17210 transitions. Word has length 69 [2024-10-11 04:47:39,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:47:39,135 INFO L471 AbstractCegarLoop]: Abstraction has 12679 states and 17210 transitions. [2024-10-11 04:47:39,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.9655172413793105) internal successors, (173), 28 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:39,135 INFO L276 IsEmpty]: Start isEmpty. Operand 12679 states and 17210 transitions. [2024-10-11 04:47:39,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-10-11 04:47:39,137 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:47:39,137 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:47:39,155 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 04:47:39,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 04:47:39,338 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:47:39,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:47:39,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1351926847, now seen corresponding path program 1 times [2024-10-11 04:47:39,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:47:39,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512776371] [2024-10-11 04:47:39,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:47:39,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:47:39,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:47:39,650 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:47:39,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:47:39,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512776371] [2024-10-11 04:47:39,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512776371] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 04:47:39,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969947952] [2024-10-11 04:47:39,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:47:39,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 04:47:39,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 04:47:39,653 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 04:47:39,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 04:47:39,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:47:39,770 INFO L255 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 04:47:39,772 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 04:47:40,158 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:47:40,158 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 04:47:40,808 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:47:40,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969947952] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 04:47:40,809 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 04:47:40,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-10-11 04:47:40,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735998303] [2024-10-11 04:47:40,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 04:47:40,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-11 04:47:40,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:47:40,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-11 04:47:40,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2024-10-11 04:47:40,811 INFO L87 Difference]: Start difference. First operand 12679 states and 17210 transitions. Second operand has 25 states, 25 states have (on average 7.76) internal successors, (194), 24 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:42,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:47:42,248 INFO L93 Difference]: Finished difference Result 24705 states and 33200 transitions. [2024-10-11 04:47:42,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-10-11 04:47:42,249 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 7.76) internal successors, (194), 24 states have internal predecessors, (194), 0 states have call successors, (0), 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 69 [2024-10-11 04:47:42,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:47:42,276 INFO L225 Difference]: With dead ends: 24705 [2024-10-11 04:47:42,276 INFO L226 Difference]: Without dead ends: 13571 [2024-10-11 04:47:42,293 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 583 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=649, Invalid=2431, Unknown=0, NotChecked=0, Total=3080 [2024-10-11 04:47:42,294 INFO L432 NwaCegarLoop]: 1515 mSDtfsCounter, 19800 mSDsluCounter, 6470 mSDsCounter, 0 mSdLazyCounter, 819 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19800 SdHoareTripleChecker+Valid, 7985 SdHoareTripleChecker+Invalid, 842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-11 04:47:42,294 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19800 Valid, 7985 Invalid, 842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 819 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-11 04:47:42,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13571 states. [2024-10-11 04:47:42,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13571 to 12107. [2024-10-11 04:47:42,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12107 states, 12105 states have (on average 1.3372160264353572) internal successors, (16187), 12106 states have internal predecessors, (16187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:42,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12107 states to 12107 states and 16187 transitions. [2024-10-11 04:47:42,748 INFO L78 Accepts]: Start accepts. Automaton has 12107 states and 16187 transitions. Word has length 69 [2024-10-11 04:47:42,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:47:42,748 INFO L471 AbstractCegarLoop]: Abstraction has 12107 states and 16187 transitions. [2024-10-11 04:47:42,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 7.76) internal successors, (194), 24 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:42,749 INFO L276 IsEmpty]: Start isEmpty. Operand 12107 states and 16187 transitions. [2024-10-11 04:47:42,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-11 04:47:42,751 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:47:42,751 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:47:42,770 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-11 04:47:42,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 04:47:42,952 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:47:42,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:47:42,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1418177617, now seen corresponding path program 1 times [2024-10-11 04:47:42,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:47:42,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459024915] [2024-10-11 04:47:42,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:47:42,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:47:43,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:47:44,854 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:47:44,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:47:44,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459024915] [2024-10-11 04:47:44,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459024915] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 04:47:44,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641809219] [2024-10-11 04:47:44,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:47:44,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 04:47:44,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 04:47:44,856 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 04:47:44,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 04:47:44,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:47:44,959 INFO L255 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-10-11 04:47:44,962 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 04:47:47,599 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:47:47,599 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 04:47:49,968 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:47:49,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641809219] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 04:47:49,969 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 04:47:49,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 21, 18] total 63 [2024-10-11 04:47:49,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334542632] [2024-10-11 04:47:49,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 04:47:49,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-10-11 04:47:49,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:47:49,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-10-11 04:47:49,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=3600, Unknown=0, NotChecked=0, Total=3906 [2024-10-11 04:47:49,973 INFO L87 Difference]: Start difference. First operand 12107 states and 16187 transitions. Second operand has 63 states, 63 states have (on average 3.0952380952380953) internal successors, (195), 63 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)