./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_two_p1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_two_p1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a615b663b5895b4b891110151ed37d2c5777d9e61c5a340653346e5f4d27eeef --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 05:01:49,875 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 05:01:49,926 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-10-24 05:01:49,930 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 05:01:49,930 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 05:01:49,956 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 05:01:49,957 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 05:01:49,957 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 05:01:49,958 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 05:01:49,959 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 05:01:49,959 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 05:01:49,960 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 05:01:49,960 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 05:01:49,962 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 05:01:49,962 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 05:01:49,963 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 05:01:49,963 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 05:01:49,963 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 05:01:49,964 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 05:01:49,964 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 05:01:49,964 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 05:01:49,966 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 05:01:49,967 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 05:01:49,967 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 05:01:49,967 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 05:01:49,967 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 05:01:49,967 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 05:01:49,968 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 05:01:49,968 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 05:01:49,968 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 05:01:49,969 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 05:01:49,969 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 05:01:49,969 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 05:01:49,969 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 05:01:49,969 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 05:01:49,969 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 05:01:49,970 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 05:01:49,970 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 05:01:49,970 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 05:01:49,971 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a615b663b5895b4b891110151ed37d2c5777d9e61c5a340653346e5f4d27eeef [2024-10-24 05:01:50,225 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 05:01:50,251 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 05:01:50,256 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 05:01:50,258 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 05:01:50,258 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 05:01:50,259 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_two_p1.c [2024-10-24 05:01:51,743 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 05:01:52,020 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 05:01:52,021 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_two_p1.c [2024-10-24 05:01:52,040 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61bd658da/c9f46a9a0a0d4b80820cafab08e646a0/FLAG09fad2452 [2024-10-24 05:01:52,058 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61bd658da/c9f46a9a0a0d4b80820cafab08e646a0 [2024-10-24 05:01:52,062 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 05:01:52,064 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 05:01:52,066 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 05:01:52,068 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 05:01:52,073 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 05:01:52,074 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 05:01:52" (1/1) ... [2024-10-24 05:01:52,075 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f9c46a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:01:52, skipping insertion in model container [2024-10-24 05:01:52,075 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 05:01:52" (1/1) ... [2024-10-24 05:01:52,134 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 05:01:52,410 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/hardware-verification-bv/btor2c-lazyMod.vis_arrays_two_p1.c[1257,1270] [2024-10-24 05:01:52,719 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 05:01:52,729 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 05:01:52,740 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/hardware-verification-bv/btor2c-lazyMod.vis_arrays_two_p1.c[1257,1270] [2024-10-24 05:01:52,877 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 05:01:52,894 INFO L204 MainTranslator]: Completed translation [2024-10-24 05:01:52,895 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:01:52 WrapperNode [2024-10-24 05:01:52,895 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 05:01:52,896 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 05:01:52,897 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 05:01:52,897 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 05:01:52,904 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:01:52" (1/1) ... [2024-10-24 05:01:52,952 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:01:52" (1/1) ... [2024-10-24 05:01:53,442 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2921 [2024-10-24 05:01:53,443 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 05:01:53,443 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 05:01:53,444 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 05:01:53,444 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 05:01:53,456 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:01:52" (1/1) ... [2024-10-24 05:01:53,457 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:01:52" (1/1) ... [2024-10-24 05:01:53,560 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:01:52" (1/1) ... [2024-10-24 05:01:53,661 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-24 05:01:53,662 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:01:52" (1/1) ... [2024-10-24 05:01:53,662 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:01:52" (1/1) ... [2024-10-24 05:01:53,761 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:01:52" (1/1) ... [2024-10-24 05:01:53,786 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:01:52" (1/1) ... [2024-10-24 05:01:53,813 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:01:52" (1/1) ... [2024-10-24 05:01:53,837 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:01:52" (1/1) ... [2024-10-24 05:01:53,891 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 05:01:53,892 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 05:01:53,892 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 05:01:53,892 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 05:01:53,893 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:01:52" (1/1) ... [2024-10-24 05:01:53,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 05:01:53,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 05:01:53,927 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 05:01:53,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 05:01:53,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 05:01:53,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 05:01:53,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 05:01:53,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 05:01:54,344 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 05:01:54,348 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 05:01:57,313 INFO L? ?]: Removed 1802 outVars from TransFormulas that were not future-live. [2024-10-24 05:01:57,314 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 05:01:57,409 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 05:01:57,409 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-24 05:01:57,410 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 05:01:57 BoogieIcfgContainer [2024-10-24 05:01:57,410 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 05:01:57,413 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 05:01:57,413 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 05:01:57,417 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 05:01:57,418 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 05:01:52" (1/3) ... [2024-10-24 05:01:57,419 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a9e3395 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 05:01:57, skipping insertion in model container [2024-10-24 05:01:57,419 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:01:52" (2/3) ... [2024-10-24 05:01:57,420 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a9e3395 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 05:01:57, skipping insertion in model container [2024-10-24 05:01:57,420 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 05:01:57" (3/3) ... [2024-10-24 05:01:57,422 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_two_p1.c [2024-10-24 05:01:57,438 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 05:01:57,438 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 05:01:57,534 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 05:01:57,543 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;@2a51ca65, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 05:01:57,544 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-24 05:01:57,554 INFO L276 IsEmpty]: Start isEmpty. Operand has 839 states, 837 states have (on average 1.5005973715651135) internal successors, (1256), 838 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:01:57,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-24 05:01:57,565 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 05:01:57,566 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] [2024-10-24 05:01:57,566 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 05:01:57,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 05:01:57,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1718020713, now seen corresponding path program 1 times [2024-10-24 05:01:57,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 05:01:57,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693710894] [2024-10-24 05:01:57,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 05:01:57,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 05:01:58,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 05:01:58,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 05:01:58,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 05:01:58,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693710894] [2024-10-24 05:01:58,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693710894] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 05:01:58,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 05:01:58,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 05:01:58,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654672384] [2024-10-24 05:01:58,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 05:01:58,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 05:01:58,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 05:01:58,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 05:01:58,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 05:01:58,944 INFO L87 Difference]: Start difference. First operand has 839 states, 837 states have (on average 1.5005973715651135) internal successors, (1256), 838 states have internal predecessors, (1256), 0 states have call successors, (0), 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 4 states, 4 states have (on average 14.5) internal successors, (58), 4 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) [2024-10-24 05:01:59,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 05:01:59,115 INFO L93 Difference]: Finished difference Result 1638 states and 2454 transitions. [2024-10-24 05:01:59,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 05:01:59,117 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 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 58 [2024-10-24 05:01:59,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 05:01:59,141 INFO L225 Difference]: With dead ends: 1638 [2024-10-24 05:01:59,141 INFO L226 Difference]: Without dead ends: 840 [2024-10-24 05:01:59,149 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 05:01:59,152 INFO L432 NwaCegarLoop]: 1251 mSDtfsCounter, 0 mSDsluCounter, 2497 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3748 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 05:01:59,153 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3748 Invalid, 13 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 05:01:59,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2024-10-24 05:01:59,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 840. [2024-10-24 05:01:59,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 840 states, 839 states have (on average 1.4970202622169249) internal successors, (1256), 839 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:01:59,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 1256 transitions. [2024-10-24 05:01:59,249 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 1256 transitions. Word has length 58 [2024-10-24 05:01:59,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 05:01:59,250 INFO L471 AbstractCegarLoop]: Abstraction has 840 states and 1256 transitions. [2024-10-24 05:01:59,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 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) [2024-10-24 05:01:59,251 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 1256 transitions. [2024-10-24 05:01:59,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-10-24 05:01:59,253 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 05:01:59,253 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] [2024-10-24 05:01:59,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 05:01:59,254 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 05:01:59,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 05:01:59,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1720730055, now seen corresponding path program 1 times [2024-10-24 05:01:59,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 05:01:59,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011609047] [2024-10-24 05:01:59,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 05:01:59,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 05:01:59,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 05:01:59,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 05:01:59,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 05:01:59,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011609047] [2024-10-24 05:01:59,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011609047] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 05:01:59,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 05:01:59,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 05:01:59,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897597741] [2024-10-24 05:01:59,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 05:01:59,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 05:01:59,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 05:01:59,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 05:01:59,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 05:01:59,686 INFO L87 Difference]: Start difference. First operand 840 states and 1256 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:01:59,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 05:01:59,736 INFO L93 Difference]: Finished difference Result 1641 states and 2454 transitions. [2024-10-24 05:01:59,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 05:01:59,737 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-10-24 05:01:59,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 05:01:59,740 INFO L225 Difference]: With dead ends: 1641 [2024-10-24 05:01:59,740 INFO L226 Difference]: Without dead ends: 842 [2024-10-24 05:01:59,743 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 05:01:59,744 INFO L432 NwaCegarLoop]: 1251 mSDtfsCounter, 0 mSDsluCounter, 2494 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3745 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 05:01:59,745 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3745 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 05:01:59,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2024-10-24 05:01:59,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 842. [2024-10-24 05:01:59,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 841 states have (on average 1.4958382877526755) internal successors, (1258), 841 states have internal predecessors, (1258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:01:59,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1258 transitions. [2024-10-24 05:01:59,762 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1258 transitions. Word has length 59 [2024-10-24 05:01:59,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 05:01:59,763 INFO L471 AbstractCegarLoop]: Abstraction has 842 states and 1258 transitions. [2024-10-24 05:01:59,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:01:59,764 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1258 transitions. [2024-10-24 05:01:59,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-24 05:01:59,765 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 05:01:59,765 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] [2024-10-24 05:01:59,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 05:01:59,766 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 05:01:59,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 05:01:59,767 INFO L85 PathProgramCache]: Analyzing trace with hash 705058562, now seen corresponding path program 1 times [2024-10-24 05:01:59,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 05:01:59,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937342751] [2024-10-24 05:01:59,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 05:01:59,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 05:02:01,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 05:02:01,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 05:02:01,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 05:02:01,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937342751] [2024-10-24 05:02:01,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937342751] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 05:02:01,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 05:02:01,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 05:02:01,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475104033] [2024-10-24 05:02:01,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 05:02:01,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 05:02:01,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 05:02:01,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 05:02:01,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 05:02:01,568 INFO L87 Difference]: Start difference. First operand 842 states and 1258 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 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) [2024-10-24 05:02:01,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 05:02:01,625 INFO L93 Difference]: Finished difference Result 1645 states and 2458 transitions. [2024-10-24 05:02:01,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 05:02:01,626 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 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 60 [2024-10-24 05:02:01,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 05:02:01,630 INFO L225 Difference]: With dead ends: 1645 [2024-10-24 05:02:01,631 INFO L226 Difference]: Without dead ends: 844 [2024-10-24 05:02:01,632 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 05:02:01,636 INFO L432 NwaCegarLoop]: 1251 mSDtfsCounter, 0 mSDsluCounter, 2494 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3745 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 05:02:01,637 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3745 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 05:02:01,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2024-10-24 05:02:01,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 844. [2024-10-24 05:02:01,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 844 states, 843 states have (on average 1.4946619217081851) internal successors, (1260), 843 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:02:01,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 1260 transitions. [2024-10-24 05:02:01,660 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 1260 transitions. Word has length 60 [2024-10-24 05:02:01,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 05:02:01,661 INFO L471 AbstractCegarLoop]: Abstraction has 844 states and 1260 transitions. [2024-10-24 05:02:01,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 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) [2024-10-24 05:02:01,662 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 1260 transitions. [2024-10-24 05:02:01,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-24 05:02:01,665 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 05:02:01,666 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] [2024-10-24 05:02:01,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 05:02:01,666 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 05:02:01,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 05:02:01,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1290866094, now seen corresponding path program 1 times [2024-10-24 05:02:01,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 05:02:01,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964810640] [2024-10-24 05:02:01,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 05:02:01,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 05:02:02,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 05:02:02,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 05:02:02,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 05:02:02,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964810640] [2024-10-24 05:02:02,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964810640] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 05:02:02,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 05:02:02,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 05:02:02,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058663398] [2024-10-24 05:02:02,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 05:02:02,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 05:02:02,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 05:02:02,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 05:02:02,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 05:02:02,638 INFO L87 Difference]: Start difference. First operand 844 states and 1260 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:02:02,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 05:02:02,708 INFO L93 Difference]: Finished difference Result 1649 states and 2462 transitions. [2024-10-24 05:02:02,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 05:02:02,709 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 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 [2024-10-24 05:02:02,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 05:02:02,712 INFO L225 Difference]: With dead ends: 1649 [2024-10-24 05:02:02,712 INFO L226 Difference]: Without dead ends: 846 [2024-10-24 05:02:02,713 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-24 05:02:02,714 INFO L432 NwaCegarLoop]: 1248 mSDtfsCounter, 1207 mSDsluCounter, 2488 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1207 SdHoareTripleChecker+Valid, 3736 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 05:02:02,714 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1207 Valid, 3736 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 05:02:02,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 846 states. [2024-10-24 05:02:02,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 846 to 846. [2024-10-24 05:02:02,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 846 states, 845 states have (on average 1.493491124260355) internal successors, (1262), 845 states have internal predecessors, (1262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:02:02,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 1262 transitions. [2024-10-24 05:02:02,733 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 1262 transitions. Word has length 61 [2024-10-24 05:02:02,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 05:02:02,735 INFO L471 AbstractCegarLoop]: Abstraction has 846 states and 1262 transitions. [2024-10-24 05:02:02,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:02:02,736 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 1262 transitions. [2024-10-24 05:02:02,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-10-24 05:02:02,741 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 05:02:02,741 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 05:02:02,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 05:02:02,742 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 05:02:02,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 05:02:02,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1818630501, now seen corresponding path program 1 times [2024-10-24 05:02:02,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 05:02:02,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101220318] [2024-10-24 05:02:02,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 05:02:02,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 05:02:02,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 05:02:03,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 05:02:03,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 05:02:03,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101220318] [2024-10-24 05:02:03,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101220318] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 05:02:03,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 05:02:03,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 05:02:03,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759090732] [2024-10-24 05:02:03,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 05:02:03,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 05:02:03,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 05:02:03,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 05:02:03,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 05:02:03,251 INFO L87 Difference]: Start difference. First operand 846 states and 1262 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:02:03,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 05:02:03,315 INFO L93 Difference]: Finished difference Result 1659 states and 2474 transitions. [2024-10-24 05:02:03,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 05:02:03,316 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-10-24 05:02:03,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 05:02:03,320 INFO L225 Difference]: With dead ends: 1659 [2024-10-24 05:02:03,320 INFO L226 Difference]: Without dead ends: 854 [2024-10-24 05:02:03,322 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 05:02:03,322 INFO L432 NwaCegarLoop]: 1250 mSDtfsCounter, 3 mSDsluCounter, 3741 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 4991 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 05:02:03,323 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 4991 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 05:02:03,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2024-10-24 05:02:03,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 850. [2024-10-24 05:02:03,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 849 states have (on average 1.4935217903415783) internal successors, (1268), 849 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:02:03,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1268 transitions. [2024-10-24 05:02:03,339 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1268 transitions. Word has length 62 [2024-10-24 05:02:03,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 05:02:03,339 INFO L471 AbstractCegarLoop]: Abstraction has 850 states and 1268 transitions. [2024-10-24 05:02:03,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:02:03,340 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1268 transitions. [2024-10-24 05:02:03,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-10-24 05:02:03,341 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 05:02:03,341 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, 1] [2024-10-24 05:02:03,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 05:02:03,341 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 05:02:03,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 05:02:03,342 INFO L85 PathProgramCache]: Analyzing trace with hash 820547221, now seen corresponding path program 1 times [2024-10-24 05:02:03,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 05:02:03,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222027859] [2024-10-24 05:02:03,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 05:02:03,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 05:02:03,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 05:02:03,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 05:02:03,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 05:02:03,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222027859] [2024-10-24 05:02:03,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222027859] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 05:02:03,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 05:02:03,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 05:02:03,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99208682] [2024-10-24 05:02:03,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 05:02:03,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 05:02:03,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 05:02:03,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 05:02:03,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 05:02:03,715 INFO L87 Difference]: Start difference. First operand 850 states and 1268 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 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) [2024-10-24 05:02:03,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 05:02:03,784 INFO L93 Difference]: Finished difference Result 1665 states and 2484 transitions. [2024-10-24 05:02:03,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 05:02:03,785 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 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 [2024-10-24 05:02:03,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 05:02:03,788 INFO L225 Difference]: With dead ends: 1665 [2024-10-24 05:02:03,789 INFO L226 Difference]: Without dead ends: 856 [2024-10-24 05:02:03,791 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 05:02:03,792 INFO L432 NwaCegarLoop]: 1250 mSDtfsCounter, 4 mSDsluCounter, 3741 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 4991 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 05:02:03,794 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 4991 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 05:02:03,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 856 states. [2024-10-24 05:02:03,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 856 to 856. [2024-10-24 05:02:03,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 856 states, 855 states have (on average 1.4923976608187135) internal successors, (1276), 855 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:02:03,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 1276 transitions. [2024-10-24 05:02:03,810 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 1276 transitions. Word has length 63 [2024-10-24 05:02:03,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 05:02:03,811 INFO L471 AbstractCegarLoop]: Abstraction has 856 states and 1276 transitions. [2024-10-24 05:02:03,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 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) [2024-10-24 05:02:03,816 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 1276 transitions. [2024-10-24 05:02:03,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-10-24 05:02:03,817 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 05:02:03,817 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, 1, 1] [2024-10-24 05:02:03,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 05:02:03,817 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 05:02:03,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 05:02:03,818 INFO L85 PathProgramCache]: Analyzing trace with hash -507151795, now seen corresponding path program 1 times [2024-10-24 05:02:03,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 05:02:03,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400318700] [2024-10-24 05:02:03,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 05:02:03,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 05:02:04,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 05:02:04,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 05:02:04,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 05:02:04,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400318700] [2024-10-24 05:02:04,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400318700] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 05:02:04,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 05:02:04,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 05:02:04,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328129174] [2024-10-24 05:02:04,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 05:02:04,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 05:02:04,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 05:02:04,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 05:02:04,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 05:02:04,650 INFO L87 Difference]: Start difference. First operand 856 states and 1276 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:02:04,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 05:02:04,713 INFO L93 Difference]: Finished difference Result 1673 states and 2494 transitions. [2024-10-24 05:02:04,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 05:02:04,714 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 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 [2024-10-24 05:02:04,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 05:02:04,717 INFO L225 Difference]: With dead ends: 1673 [2024-10-24 05:02:04,717 INFO L226 Difference]: Without dead ends: 858 [2024-10-24 05:02:04,718 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-24 05:02:04,720 INFO L432 NwaCegarLoop]: 1250 mSDtfsCounter, 1215 mSDsluCounter, 2492 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1215 SdHoareTripleChecker+Valid, 3742 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 05:02:04,720 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1215 Valid, 3742 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 05:02:04,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2024-10-24 05:02:04,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 858. [2024-10-24 05:02:04,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 858 states, 857 states have (on average 1.4912485414235706) internal successors, (1278), 857 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:02:04,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 1278 transitions. [2024-10-24 05:02:04,736 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 1278 transitions. Word has length 64 [2024-10-24 05:02:04,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 05:02:04,737 INFO L471 AbstractCegarLoop]: Abstraction has 858 states and 1278 transitions. [2024-10-24 05:02:04,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:02:04,737 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 1278 transitions. [2024-10-24 05:02:04,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-24 05:02:04,738 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 05:02:04,738 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, 1, 1, 1] [2024-10-24 05:02:04,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 05:02:04,739 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 05:02:04,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 05:02:04,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1430925788, now seen corresponding path program 1 times [2024-10-24 05:02:04,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 05:02:04,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870855036] [2024-10-24 05:02:04,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 05:02:04,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 05:02:04,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 05:02:05,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 05:02:05,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 05:02:05,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870855036] [2024-10-24 05:02:05,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870855036] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 05:02:05,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 05:02:05,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 05:02:05,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616173540] [2024-10-24 05:02:05,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 05:02:05,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 05:02:05,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 05:02:05,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 05:02:05,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 05:02:05,327 INFO L87 Difference]: Start difference. First operand 858 states and 1278 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:02:05,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 05:02:05,411 INFO L93 Difference]: Finished difference Result 1683 states and 2506 transitions. [2024-10-24 05:02:05,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 05:02:05,412 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2024-10-24 05:02:05,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 05:02:05,416 INFO L225 Difference]: With dead ends: 1683 [2024-10-24 05:02:05,416 INFO L226 Difference]: Without dead ends: 866 [2024-10-24 05:02:05,418 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 05:02:05,421 INFO L432 NwaCegarLoop]: 1250 mSDtfsCounter, 3 mSDsluCounter, 4986 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6236 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 05:02:05,421 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6236 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 05:02:05,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2024-10-24 05:02:05,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 862. [2024-10-24 05:02:05,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 862 states, 861 states have (on average 1.4912891986062717) internal successors, (1284), 861 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:02:05,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 1284 transitions. [2024-10-24 05:02:05,442 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 1284 transitions. Word has length 65 [2024-10-24 05:02:05,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 05:02:05,443 INFO L471 AbstractCegarLoop]: Abstraction has 862 states and 1284 transitions. [2024-10-24 05:02:05,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:02:05,443 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 1284 transitions. [2024-10-24 05:02:05,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-24 05:02:05,445 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 05:02:05,446 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, 1, 1, 1, 1] [2024-10-24 05:02:05,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 05:02:05,447 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 05:02:05,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 05:02:05,448 INFO L85 PathProgramCache]: Analyzing trace with hash 2000225926, now seen corresponding path program 1 times [2024-10-24 05:02:05,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 05:02:05,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590528244] [2024-10-24 05:02:05,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 05:02:05,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 05:02:05,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 05:02:05,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 05:02:05,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 05:02:05,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590528244] [2024-10-24 05:02:05,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590528244] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 05:02:05,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 05:02:05,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 05:02:05,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302794074] [2024-10-24 05:02:05,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 05:02:05,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 05:02:05,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 05:02:05,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 05:02:05,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 05:02:05,868 INFO L87 Difference]: Start difference. First operand 862 states and 1284 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:02:05,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 05:02:05,932 INFO L93 Difference]: Finished difference Result 1689 states and 2516 transitions. [2024-10-24 05:02:05,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 05:02:05,933 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 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 [2024-10-24 05:02:05,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 05:02:05,937 INFO L225 Difference]: With dead ends: 1689 [2024-10-24 05:02:05,937 INFO L226 Difference]: Without dead ends: 868 [2024-10-24 05:02:05,938 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 05:02:05,939 INFO L432 NwaCegarLoop]: 1250 mSDtfsCounter, 4 mSDsluCounter, 3741 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 4991 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 05:02:05,939 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 4991 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 05:02:05,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2024-10-24 05:02:05,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 868. [2024-10-24 05:02:05,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 868 states, 867 states have (on average 1.4901960784313726) internal successors, (1292), 867 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:02:05,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 1292 transitions. [2024-10-24 05:02:05,959 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 1292 transitions. Word has length 66 [2024-10-24 05:02:05,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 05:02:05,960 INFO L471 AbstractCegarLoop]: Abstraction has 868 states and 1292 transitions. [2024-10-24 05:02:05,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:02:05,960 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 1292 transitions. [2024-10-24 05:02:05,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-10-24 05:02:05,961 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 05:02:05,961 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, 1, 1, 1, 1, 1] [2024-10-24 05:02:05,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 05:02:05,961 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 05:02:05,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 05:02:05,961 INFO L85 PathProgramCache]: Analyzing trace with hash 499472234, now seen corresponding path program 1 times [2024-10-24 05:02:05,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 05:02:05,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941836490] [2024-10-24 05:02:05,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 05:02:05,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 05:02:06,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 05:02:06,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 05:02:06,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 05:02:06,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941836490] [2024-10-24 05:02:06,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941836490] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 05:02:06,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 05:02:06,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 05:02:06,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198919394] [2024-10-24 05:02:06,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 05:02:06,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 05:02:06,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 05:02:06,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 05:02:06,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 05:02:06,416 INFO L87 Difference]: Start difference. First operand 868 states and 1292 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:02:06,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 05:02:06,474 INFO L93 Difference]: Finished difference Result 1701 states and 2532 transitions. [2024-10-24 05:02:06,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 05:02:06,474 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2024-10-24 05:02:06,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 05:02:06,477 INFO L225 Difference]: With dead ends: 1701 [2024-10-24 05:02:06,478 INFO L226 Difference]: Without dead ends: 874 [2024-10-24 05:02:06,479 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 05:02:06,480 INFO L432 NwaCegarLoop]: 1250 mSDtfsCounter, 4 mSDsluCounter, 3741 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 4991 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 05:02:06,480 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 4991 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 05:02:06,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2024-10-24 05:02:06,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 874. [2024-10-24 05:02:06,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 874 states, 873 states have (on average 1.4891179839633448) internal successors, (1300), 873 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:02:06,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 1300 transitions. [2024-10-24 05:02:06,496 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 1300 transitions. Word has length 67 [2024-10-24 05:02:06,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 05:02:06,497 INFO L471 AbstractCegarLoop]: Abstraction has 874 states and 1300 transitions. [2024-10-24 05:02:06,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:02:06,497 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 1300 transitions. [2024-10-24 05:02:06,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-10-24 05:02:06,498 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 05:02:06,498 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, 1, 1, 1, 1, 1, 1] [2024-10-24 05:02:06,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 05:02:06,498 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 05:02:06,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 05:02:06,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1592355976, now seen corresponding path program 1 times [2024-10-24 05:02:06,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 05:02:06,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414914225] [2024-10-24 05:02:06,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 05:02:06,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 05:02:06,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 05:02:06,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 05:02:06,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 05:02:06,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414914225] [2024-10-24 05:02:06,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414914225] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 05:02:06,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 05:02:06,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 05:02:06,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839168548] [2024-10-24 05:02:06,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 05:02:06,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 05:02:06,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 05:02:06,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 05:02:06,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 05:02:06,844 INFO L87 Difference]: Start difference. First operand 874 states and 1300 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:02:06,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 05:02:06,903 INFO L93 Difference]: Finished difference Result 1713 states and 2548 transitions. [2024-10-24 05:02:06,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 05:02:06,904 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-10-24 05:02:06,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 05:02:06,907 INFO L225 Difference]: With dead ends: 1713 [2024-10-24 05:02:06,907 INFO L226 Difference]: Without dead ends: 880 [2024-10-24 05:02:06,908 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 05:02:06,909 INFO L432 NwaCegarLoop]: 1250 mSDtfsCounter, 4 mSDsluCounter, 3741 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 4991 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 05:02:06,909 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 4991 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 05:02:06,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2024-10-24 05:02:06,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 880. [2024-10-24 05:02:06,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 880 states, 879 states have (on average 1.4880546075085324) internal successors, (1308), 879 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:02:06,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1308 transitions. [2024-10-24 05:02:06,926 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1308 transitions. Word has length 68 [2024-10-24 05:02:06,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 05:02:06,927 INFO L471 AbstractCegarLoop]: Abstraction has 880 states and 1308 transitions. [2024-10-24 05:02:06,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:02:06,927 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1308 transitions. [2024-10-24 05:02:06,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-10-24 05:02:06,928 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 05:02:06,928 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, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 05:02:06,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-24 05:02:06,928 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 05:02:06,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 05:02:06,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1288167416, now seen corresponding path program 1 times [2024-10-24 05:02:06,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 05:02:06,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443165293] [2024-10-24 05:02:06,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 05:02:06,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 05:02:07,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 05:02:07,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 05:02:07,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 05:02:07,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443165293] [2024-10-24 05:02:07,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443165293] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 05:02:07,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 05:02:07,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 05:02:07,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978051281] [2024-10-24 05:02:07,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 05:02:07,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 05:02:07,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 05:02:07,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 05:02:07,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 05:02:07,725 INFO L87 Difference]: Start difference. First operand 880 states and 1308 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:02:07,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 05:02:07,791 INFO L93 Difference]: Finished difference Result 1721 states and 2558 transitions. [2024-10-24 05:02:07,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 05:02:07,792 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 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 [2024-10-24 05:02:07,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 05:02:07,795 INFO L225 Difference]: With dead ends: 1721 [2024-10-24 05:02:07,795 INFO L226 Difference]: Without dead ends: 882 [2024-10-24 05:02:07,797 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-24 05:02:07,797 INFO L432 NwaCegarLoop]: 1250 mSDtfsCounter, 1231 mSDsluCounter, 2492 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1231 SdHoareTripleChecker+Valid, 3742 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 05:02:07,798 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1231 Valid, 3742 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 05:02:07,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 882 states. [2024-10-24 05:02:07,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 882 to 882. [2024-10-24 05:02:07,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 882 states, 881 states have (on average 1.4869466515323495) internal successors, (1310), 881 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:02:07,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 1310 transitions. [2024-10-24 05:02:07,816 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 1310 transitions. Word has length 69 [2024-10-24 05:02:07,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 05:02:07,817 INFO L471 AbstractCegarLoop]: Abstraction has 882 states and 1310 transitions. [2024-10-24 05:02:07,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:02:07,817 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 1310 transitions. [2024-10-24 05:02:07,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-10-24 05:02:07,818 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 05:02:07,818 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 05:02:07,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-24 05:02:07,818 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 05:02:07,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 05:02:07,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1009138065, now seen corresponding path program 1 times [2024-10-24 05:02:07,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 05:02:07,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586636132] [2024-10-24 05:02:07,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 05:02:07,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 05:02:08,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 05:02:08,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 05:02:08,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 05:02:08,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586636132] [2024-10-24 05:02:08,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586636132] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 05:02:08,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 05:02:08,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 05:02:08,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299909664] [2024-10-24 05:02:08,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 05:02:08,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 05:02:08,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 05:02:08,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 05:02:08,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 05:02:08,627 INFO L87 Difference]: Start difference. First operand 882 states and 1310 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:02:08,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 05:02:08,712 INFO L93 Difference]: Finished difference Result 1727 states and 2564 transitions. [2024-10-24 05:02:08,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 05:02:08,713 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-10-24 05:02:08,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 05:02:08,717 INFO L225 Difference]: With dead ends: 1727 [2024-10-24 05:02:08,717 INFO L226 Difference]: Without dead ends: 886 [2024-10-24 05:02:08,718 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-24 05:02:08,719 INFO L432 NwaCegarLoop]: 1250 mSDtfsCounter, 1204 mSDsluCounter, 3737 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1204 SdHoareTripleChecker+Valid, 4987 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 05:02:08,719 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1204 Valid, 4987 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 05:02:08,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2024-10-24 05:02:08,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 882. [2024-10-24 05:02:08,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 882 states, 881 states have (on average 1.4869466515323495) internal successors, (1310), 881 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:02:08,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 1310 transitions. [2024-10-24 05:02:08,741 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 1310 transitions. Word has length 70 [2024-10-24 05:02:08,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 05:02:08,741 INFO L471 AbstractCegarLoop]: Abstraction has 882 states and 1310 transitions. [2024-10-24 05:02:08,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:02:08,742 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 1310 transitions. [2024-10-24 05:02:08,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-24 05:02:08,743 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 05:02:08,743 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 05:02:08,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-24 05:02:08,743 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 05:02:08,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 05:02:08,744 INFO L85 PathProgramCache]: Analyzing trace with hash -89416264, now seen corresponding path program 1 times [2024-10-24 05:02:08,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 05:02:08,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583599628] [2024-10-24 05:02:08,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 05:02:08,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 05:02:09,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 05:02:09,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 05:02:09,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 05:02:09,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583599628] [2024-10-24 05:02:09,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583599628] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 05:02:09,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 05:02:09,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 05:02:09,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755883269] [2024-10-24 05:02:09,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 05:02:09,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 05:02:09,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 05:02:09,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 05:02:09,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 05:02:09,590 INFO L87 Difference]: Start difference. First operand 882 states and 1310 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:02:09,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 05:02:09,670 INFO L93 Difference]: Finished difference Result 1727 states and 2564 transitions. [2024-10-24 05:02:09,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 05:02:09,671 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2024-10-24 05:02:09,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 05:02:09,674 INFO L225 Difference]: With dead ends: 1727 [2024-10-24 05:02:09,675 INFO L226 Difference]: Without dead ends: 886 [2024-10-24 05:02:09,676 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-24 05:02:09,676 INFO L432 NwaCegarLoop]: 1250 mSDtfsCounter, 1215 mSDsluCounter, 3737 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1215 SdHoareTripleChecker+Valid, 4987 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 05:02:09,677 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1215 Valid, 4987 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 05:02:09,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2024-10-24 05:02:09,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 882. [2024-10-24 05:02:09,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 882 states, 881 states have (on average 1.4869466515323495) internal successors, (1310), 881 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:02:09,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 1310 transitions. [2024-10-24 05:02:09,695 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 1310 transitions. Word has length 71 [2024-10-24 05:02:09,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 05:02:09,696 INFO L471 AbstractCegarLoop]: Abstraction has 882 states and 1310 transitions. [2024-10-24 05:02:09,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:02:09,696 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 1310 transitions. [2024-10-24 05:02:09,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-10-24 05:02:09,697 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 05:02:09,697 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 05:02:09,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-24 05:02:09,697 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 05:02:09,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 05:02:09,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1747901519, now seen corresponding path program 1 times [2024-10-24 05:02:09,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 05:02:09,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071254002] [2024-10-24 05:02:09,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 05:02:09,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 05:02:09,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 05:02:10,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 05:02:10,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 05:02:10,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071254002] [2024-10-24 05:02:10,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071254002] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 05:02:10,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 05:02:10,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 05:02:10,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463942379] [2024-10-24 05:02:10,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 05:02:10,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 05:02:10,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 05:02:10,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 05:02:10,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 05:02:10,557 INFO L87 Difference]: Start difference. First operand 882 states and 1310 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:02:10,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 05:02:10,645 INFO L93 Difference]: Finished difference Result 1727 states and 2564 transitions. [2024-10-24 05:02:10,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 05:02:10,646 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2024-10-24 05:02:10,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 05:02:10,649 INFO L225 Difference]: With dead ends: 1727 [2024-10-24 05:02:10,650 INFO L226 Difference]: Without dead ends: 886 [2024-10-24 05:02:10,652 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-24 05:02:10,653 INFO L432 NwaCegarLoop]: 1250 mSDtfsCounter, 1225 mSDsluCounter, 3737 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1225 SdHoareTripleChecker+Valid, 4987 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 05:02:10,653 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1225 Valid, 4987 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 05:02:10,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2024-10-24 05:02:10,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 882. [2024-10-24 05:02:10,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 882 states, 881 states have (on average 1.4869466515323495) internal successors, (1310), 881 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:02:10,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 1310 transitions. [2024-10-24 05:02:10,672 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 1310 transitions. Word has length 72 [2024-10-24 05:02:10,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 05:02:10,672 INFO L471 AbstractCegarLoop]: Abstraction has 882 states and 1310 transitions. [2024-10-24 05:02:10,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:02:10,672 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 1310 transitions. [2024-10-24 05:02:10,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-10-24 05:02:10,674 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 05:02:10,674 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 05:02:10,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-24 05:02:10,675 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 05:02:10,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 05:02:10,676 INFO L85 PathProgramCache]: Analyzing trace with hash -514686760, now seen corresponding path program 1 times [2024-10-24 05:02:10,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 05:02:10,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348962202] [2024-10-24 05:02:10,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 05:02:10,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 05:02:11,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 05:02:11,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 05:02:11,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 05:02:11,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348962202] [2024-10-24 05:02:11,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348962202] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 05:02:11,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 05:02:11,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 05:02:11,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80539516] [2024-10-24 05:02:11,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 05:02:11,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 05:02:11,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 05:02:11,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 05:02:11,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 05:02:11,698 INFO L87 Difference]: Start difference. First operand 882 states and 1310 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:02:11,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 05:02:11,978 INFO L93 Difference]: Finished difference Result 1725 states and 2562 transitions. [2024-10-24 05:02:11,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 05:02:11,979 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-10-24 05:02:11,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 05:02:11,982 INFO L225 Difference]: With dead ends: 1725 [2024-10-24 05:02:11,982 INFO L226 Difference]: Without dead ends: 884 [2024-10-24 05:02:11,983 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-24 05:02:11,984 INFO L432 NwaCegarLoop]: 1156 mSDtfsCounter, 1229 mSDsluCounter, 2306 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1229 SdHoareTripleChecker+Valid, 3462 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 05:02:11,984 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1229 Valid, 3462 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 05:02:11,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2024-10-24 05:02:11,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 882. [2024-10-24 05:02:11,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 882 states, 881 states have (on average 1.4869466515323495) internal successors, (1310), 881 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:02:12,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 1310 transitions. [2024-10-24 05:02:12,001 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 1310 transitions. Word has length 73 [2024-10-24 05:02:12,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 05:02:12,001 INFO L471 AbstractCegarLoop]: Abstraction has 882 states and 1310 transitions. [2024-10-24 05:02:12,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:02:12,001 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 1310 transitions. [2024-10-24 05:02:12,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-10-24 05:02:12,002 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 05:02:12,002 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 05:02:12,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-24 05:02:12,003 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 05:02:12,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 05:02:12,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1918350450, now seen corresponding path program 1 times [2024-10-24 05:02:12,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 05:02:12,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890687899] [2024-10-24 05:02:12,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 05:02:12,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 05:02:12,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 05:02:13,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 05:02:13,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 05:02:13,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890687899] [2024-10-24 05:02:13,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890687899] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 05:02:13,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 05:02:13,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 05:02:13,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099169970] [2024-10-24 05:02:13,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 05:02:13,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 05:02:13,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 05:02:13,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 05:02:13,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 05:02:13,232 INFO L87 Difference]: Start difference. First operand 882 states and 1310 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:02:13,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 05:02:13,500 INFO L93 Difference]: Finished difference Result 1727 states and 2564 transitions. [2024-10-24 05:02:13,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 05:02:13,501 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2024-10-24 05:02:13,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 05:02:13,504 INFO L225 Difference]: With dead ends: 1727 [2024-10-24 05:02:13,504 INFO L226 Difference]: Without dead ends: 886 [2024-10-24 05:02:13,506 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-24 05:02:13,506 INFO L432 NwaCegarLoop]: 1156 mSDtfsCounter, 1205 mSDsluCounter, 2306 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1205 SdHoareTripleChecker+Valid, 3462 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 05:02:13,506 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1205 Valid, 3462 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 05:02:13,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2024-10-24 05:02:13,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 882. [2024-10-24 05:02:13,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 882 states, 881 states have (on average 1.4869466515323495) internal successors, (1310), 881 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:02:13,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 1310 transitions. [2024-10-24 05:02:13,521 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 1310 transitions. Word has length 74 [2024-10-24 05:02:13,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 05:02:13,521 INFO L471 AbstractCegarLoop]: Abstraction has 882 states and 1310 transitions. [2024-10-24 05:02:13,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:02:13,522 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 1310 transitions. [2024-10-24 05:02:13,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-10-24 05:02:13,523 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 05:02:13,523 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 05:02:13,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-24 05:02:13,523 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 05:02:13,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 05:02:13,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1537302274, now seen corresponding path program 1 times [2024-10-24 05:02:13,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 05:02:13,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847276978] [2024-10-24 05:02:13,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 05:02:13,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 05:02:13,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 05:02:14,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 05:02:14,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 05:02:14,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847276978] [2024-10-24 05:02:14,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847276978] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 05:02:14,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 05:02:14,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 05:02:14,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477738242] [2024-10-24 05:02:14,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 05:02:14,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 05:02:14,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 05:02:14,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 05:02:14,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 05:02:14,546 INFO L87 Difference]: Start difference. First operand 882 states and 1310 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:02:14,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 05:02:14,896 INFO L93 Difference]: Finished difference Result 1727 states and 2564 transitions. [2024-10-24 05:02:14,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 05:02:14,897 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2024-10-24 05:02:14,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 05:02:14,900 INFO L225 Difference]: With dead ends: 1727 [2024-10-24 05:02:14,900 INFO L226 Difference]: Without dead ends: 886 [2024-10-24 05:02:14,901 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-24 05:02:14,902 INFO L432 NwaCegarLoop]: 1156 mSDtfsCounter, 1222 mSDsluCounter, 3456 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1222 SdHoareTripleChecker+Valid, 4612 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 05:02:14,902 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1222 Valid, 4612 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 05:02:14,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2024-10-24 05:02:14,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 882. [2024-10-24 05:02:14,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 882 states, 881 states have (on average 1.4869466515323495) internal successors, (1310), 881 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:02:14,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 1310 transitions. [2024-10-24 05:02:14,917 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 1310 transitions. Word has length 75 [2024-10-24 05:02:14,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 05:02:14,918 INFO L471 AbstractCegarLoop]: Abstraction has 882 states and 1310 transitions. [2024-10-24 05:02:14,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:02:14,918 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 1310 transitions. [2024-10-24 05:02:14,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-10-24 05:02:14,919 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 05:02:14,919 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 05:02:14,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-24 05:02:14,920 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 05:02:14,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 05:02:14,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1382811092, now seen corresponding path program 1 times [2024-10-24 05:02:14,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 05:02:14,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294413069] [2024-10-24 05:02:14,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 05:02:14,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 05:02:15,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 05:02:15,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 05:02:15,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 05:02:15,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294413069] [2024-10-24 05:02:15,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294413069] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 05:02:15,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 05:02:15,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 05:02:15,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323605954] [2024-10-24 05:02:15,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 05:02:15,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 05:02:15,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 05:02:15,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 05:02:15,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 05:02:15,659 INFO L87 Difference]: Start difference. First operand 882 states and 1310 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:02:15,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 05:02:15,719 INFO L93 Difference]: Finished difference Result 1727 states and 2564 transitions. [2024-10-24 05:02:15,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 05:02:15,720 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-10-24 05:02:15,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 05:02:15,723 INFO L225 Difference]: With dead ends: 1727 [2024-10-24 05:02:15,724 INFO L226 Difference]: Without dead ends: 886 [2024-10-24 05:02:15,725 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-24 05:02:15,726 INFO L432 NwaCegarLoop]: 1250 mSDtfsCounter, 1217 mSDsluCounter, 2492 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1217 SdHoareTripleChecker+Valid, 3742 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 05:02:15,726 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1217 Valid, 3742 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 05:02:15,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2024-10-24 05:02:15,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 882. [2024-10-24 05:02:15,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 882 states, 881 states have (on average 1.4869466515323495) internal successors, (1310), 881 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:02:15,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 1310 transitions. [2024-10-24 05:02:15,747 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 1310 transitions. Word has length 76 [2024-10-24 05:02:15,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 05:02:15,747 INFO L471 AbstractCegarLoop]: Abstraction has 882 states and 1310 transitions. [2024-10-24 05:02:15,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:02:15,748 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 1310 transitions. [2024-10-24 05:02:15,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-10-24 05:02:15,748 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 05:02:15,749 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 05:02:15,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-24 05:02:15,749 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 05:02:15,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 05:02:15,749 INFO L85 PathProgramCache]: Analyzing trace with hash -54040357, now seen corresponding path program 1 times [2024-10-24 05:02:15,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 05:02:15,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775456051] [2024-10-24 05:02:15,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 05:02:15,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 05:02:16,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 05:02:16,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 05:02:16,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 05:02:16,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775456051] [2024-10-24 05:02:16,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775456051] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 05:02:16,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 05:02:16,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 05:02:16,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906329292] [2024-10-24 05:02:16,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 05:02:16,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 05:02:16,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 05:02:16,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 05:02:16,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 05:02:16,678 INFO L87 Difference]: Start difference. First operand 882 states and 1310 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:02:17,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 05:02:17,025 INFO L93 Difference]: Finished difference Result 1727 states and 2564 transitions. [2024-10-24 05:02:17,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 05:02:17,026 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2024-10-24 05:02:17,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 05:02:17,029 INFO L225 Difference]: With dead ends: 1727 [2024-10-24 05:02:17,029 INFO L226 Difference]: Without dead ends: 886 [2024-10-24 05:02:17,032 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-24 05:02:17,032 INFO L432 NwaCegarLoop]: 1156 mSDtfsCounter, 1209 mSDsluCounter, 3456 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1209 SdHoareTripleChecker+Valid, 4612 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 05:02:17,033 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1209 Valid, 4612 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 05:02:17,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2024-10-24 05:02:17,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 882. [2024-10-24 05:02:17,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 882 states, 881 states have (on average 1.4869466515323495) internal successors, (1310), 881 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:02:17,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 1310 transitions. [2024-10-24 05:02:17,051 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 1310 transitions. Word has length 77 [2024-10-24 05:02:17,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 05:02:17,051 INFO L471 AbstractCegarLoop]: Abstraction has 882 states and 1310 transitions. [2024-10-24 05:02:17,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:02:17,052 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 1310 transitions. [2024-10-24 05:02:17,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-10-24 05:02:17,052 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 05:02:17,053 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 05:02:17,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-24 05:02:17,053 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 05:02:17,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 05:02:17,053 INFO L85 PathProgramCache]: Analyzing trace with hash -216379151, now seen corresponding path program 1 times [2024-10-24 05:02:17,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 05:02:17,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436502505] [2024-10-24 05:02:17,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 05:02:17,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 05:02:17,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 05:02:17,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 05:02:17,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 05:02:17,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436502505] [2024-10-24 05:02:17,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436502505] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 05:02:17,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 05:02:17,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 05:02:17,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439022427] [2024-10-24 05:02:17,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 05:02:17,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 05:02:17,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 05:02:17,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 05:02:17,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 05:02:17,957 INFO L87 Difference]: Start difference. First operand 882 states and 1310 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:02:18,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 05:02:18,225 INFO L93 Difference]: Finished difference Result 1727 states and 2564 transitions. [2024-10-24 05:02:18,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 05:02:18,226 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-10-24 05:02:18,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 05:02:18,229 INFO L225 Difference]: With dead ends: 1727 [2024-10-24 05:02:18,229 INFO L226 Difference]: Without dead ends: 886 [2024-10-24 05:02:18,230 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-24 05:02:18,231 INFO L432 NwaCegarLoop]: 1156 mSDtfsCounter, 1215 mSDsluCounter, 2306 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1215 SdHoareTripleChecker+Valid, 3462 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 05:02:18,231 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1215 Valid, 3462 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 05:02:18,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2024-10-24 05:02:18,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 882. [2024-10-24 05:02:18,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 882 states, 881 states have (on average 1.4869466515323495) internal successors, (1310), 881 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:02:18,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 1310 transitions. [2024-10-24 05:02:18,246 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 1310 transitions. Word has length 78 [2024-10-24 05:02:18,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 05:02:18,246 INFO L471 AbstractCegarLoop]: Abstraction has 882 states and 1310 transitions. [2024-10-24 05:02:18,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:02:18,246 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 1310 transitions. [2024-10-24 05:02:18,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-10-24 05:02:18,247 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 05:02:18,247 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 05:02:18,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-24 05:02:18,247 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 05:02:18,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 05:02:18,248 INFO L85 PathProgramCache]: Analyzing trace with hash -819203077, now seen corresponding path program 1 times [2024-10-24 05:02:18,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 05:02:18,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281758309] [2024-10-24 05:02:18,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 05:02:18,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 05:02:18,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 05:02:19,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 05:02:19,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 05:02:19,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281758309] [2024-10-24 05:02:19,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281758309] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 05:02:19,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 05:02:19,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 05:02:19,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74567663] [2024-10-24 05:02:19,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 05:02:19,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 05:02:19,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 05:02:19,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 05:02:19,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 05:02:19,285 INFO L87 Difference]: Start difference. First operand 882 states and 1310 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:02:19,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 05:02:19,665 INFO L93 Difference]: Finished difference Result 1727 states and 2564 transitions. [2024-10-24 05:02:19,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 05:02:19,665 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2024-10-24 05:02:19,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 05:02:19,669 INFO L225 Difference]: With dead ends: 1727 [2024-10-24 05:02:19,669 INFO L226 Difference]: Without dead ends: 886 [2024-10-24 05:02:19,670 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-24 05:02:19,671 INFO L432 NwaCegarLoop]: 1156 mSDtfsCounter, 1194 mSDsluCounter, 3456 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1194 SdHoareTripleChecker+Valid, 4612 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 05:02:19,671 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1194 Valid, 4612 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 05:02:19,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2024-10-24 05:02:19,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 882. [2024-10-24 05:02:19,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 882 states, 881 states have (on average 1.4869466515323495) internal successors, (1310), 881 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:02:19,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 1310 transitions. [2024-10-24 05:02:19,688 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 1310 transitions. Word has length 79 [2024-10-24 05:02:19,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 05:02:19,688 INFO L471 AbstractCegarLoop]: Abstraction has 882 states and 1310 transitions. [2024-10-24 05:02:19,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:02:19,689 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 1310 transitions. [2024-10-24 05:02:19,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-10-24 05:02:19,690 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 05:02:19,690 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 05:02:19,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-24 05:02:19,690 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 05:02:19,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 05:02:19,691 INFO L85 PathProgramCache]: Analyzing trace with hash 828134865, now seen corresponding path program 1 times [2024-10-24 05:02:19,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 05:02:19,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822279844] [2024-10-24 05:02:19,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 05:02:19,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 05:02:20,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 05:02:21,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 05:02:21,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 05:02:21,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822279844] [2024-10-24 05:02:21,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822279844] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 05:02:21,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 05:02:21,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 05:02:21,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049632262] [2024-10-24 05:02:21,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 05:02:21,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 05:02:21,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 05:02:21,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 05:02:21,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-10-24 05:02:21,871 INFO L87 Difference]: Start difference. First operand 882 states and 1310 transitions. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:02:22,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 05:02:22,316 INFO L93 Difference]: Finished difference Result 2288 states and 3395 transitions. [2024-10-24 05:02:22,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 05:02:22,317 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-10-24 05:02:22,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 05:02:22,323 INFO L225 Difference]: With dead ends: 2288 [2024-10-24 05:02:22,323 INFO L226 Difference]: Without dead ends: 1447 [2024-10-24 05:02:22,325 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2024-10-24 05:02:22,325 INFO L432 NwaCegarLoop]: 1218 mSDtfsCounter, 2828 mSDsluCounter, 7300 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2828 SdHoareTripleChecker+Valid, 8518 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 05:02:22,326 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2828 Valid, 8518 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 05:02:22,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1447 states. [2024-10-24 05:02:22,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1447 to 910. [2024-10-24 05:02:22,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 910 states, 909 states have (on average 1.4873487348734873) internal successors, (1352), 909 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:02:22,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1352 transitions. [2024-10-24 05:02:22,343 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1352 transitions. Word has length 80 [2024-10-24 05:02:22,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 05:02:22,344 INFO L471 AbstractCegarLoop]: Abstraction has 910 states and 1352 transitions. [2024-10-24 05:02:22,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:02:22,344 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1352 transitions. [2024-10-24 05:02:22,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2024-10-24 05:02:22,351 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 05:02:22,351 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 05:02:22,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-24 05:02:22,352 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 05:02:22,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 05:02:22,352 INFO L85 PathProgramCache]: Analyzing trace with hash -101359615, now seen corresponding path program 1 times [2024-10-24 05:02:22,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 05:02:22,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799469751] [2024-10-24 05:02:22,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 05:02:22,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 05:02:35,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 05:02:42,169 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 32 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 05:02:42,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 05:02:42,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799469751] [2024-10-24 05:02:42,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799469751] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 05:02:42,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914591788] [2024-10-24 05:02:42,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 05:02:42,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 05:02:42,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 05:02:42,173 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 05:02:42,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 05:02:45,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 05:02:45,925 INFO L255 TraceCheckSpWp]: Trace formula consists of 3692 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-10-24 05:02:45,965 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 05:02:48,256 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 32 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 05:02:48,256 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 05:02:50,649 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 32 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 05:02:50,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914591788] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 05:02:50,650 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 05:02:50,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 15 [2024-10-24 05:02:50,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954956774] [2024-10-24 05:02:50,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 05:02:50,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-24 05:02:50,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 05:02:50,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-24 05:02:50,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2024-10-24 05:02:50,655 INFO L87 Difference]: Start difference. First operand 910 states and 1352 transitions. Second operand has 16 states, 16 states have (on average 86.125) internal successors, (1378), 15 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)