./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem16_label01.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem16_label01.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 67c147095efb46de95e554e09305e6c24ee3dfebae2911ec90ba2508ef10e1b1 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-10 23:39:52,345 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-10 23:39:52,401 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-10 23:39:52,406 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-10 23:39:52,407 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-10 23:39:52,425 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-10 23:39:52,425 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-10 23:39:52,426 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-10 23:39:52,426 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-10 23:39:52,428 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-10 23:39:52,428 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-10 23:39:52,428 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-10 23:39:52,429 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-10 23:39:52,429 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-10 23:39:52,430 INFO L153 SettingsManager]: * Use SBE=true [2024-10-10 23:39:52,430 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-10 23:39:52,431 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-10 23:39:52,431 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-10 23:39:52,431 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-10 23:39:52,431 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-10 23:39:52,431 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-10 23:39:52,434 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-10 23:39:52,434 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-10 23:39:52,434 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-10 23:39:52,434 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-10 23:39:52,434 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-10 23:39:52,434 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-10 23:39:52,435 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-10 23:39:52,435 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-10 23:39:52,435 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-10 23:39:52,435 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-10 23:39:52,435 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-10 23:39:52,435 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 23:39:52,436 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-10 23:39:52,436 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-10 23:39:52,436 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-10 23:39:52,436 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-10 23:39:52,436 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-10 23:39:52,436 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-10 23:39:52,437 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-10 23:39:52,437 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-10 23:39:52,438 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-10 23:39:52,438 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67c147095efb46de95e554e09305e6c24ee3dfebae2911ec90ba2508ef10e1b1 [2024-10-10 23:39:52,642 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-10 23:39:52,660 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-10 23:39:52,663 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-10 23:39:52,664 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-10 23:39:52,665 INFO L274 PluginConnector]: CDTParser initialized [2024-10-10 23:39:52,666 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem16_label01.c [2024-10-10 23:39:53,910 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-10 23:39:54,166 INFO L384 CDTParser]: Found 1 translation units. [2024-10-10 23:39:54,166 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem16_label01.c [2024-10-10 23:39:54,182 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/5d539a624/21d2ca88f02e46c59fa25f741ebacc4c/FLAGa7f6b971b [2024-10-10 23:39:54,194 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/5d539a624/21d2ca88f02e46c59fa25f741ebacc4c [2024-10-10 23:39:54,197 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-10 23:39:54,198 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-10 23:39:54,201 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-10 23:39:54,202 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-10 23:39:54,206 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-10 23:39:54,206 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 11:39:54" (1/1) ... [2024-10-10 23:39:54,207 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@517d79b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:39:54, skipping insertion in model container [2024-10-10 23:39:54,207 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 11:39:54" (1/1) ... [2024-10-10 23:39:54,253 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-10 23:39:54,424 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/eca-rers2012/Problem16_label01.c[2910,2923] [2024-10-10 23:39:54,785 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 23:39:54,791 INFO L200 MainTranslator]: Completed pre-run [2024-10-10 23:39:54,802 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/eca-rers2012/Problem16_label01.c[2910,2923] [2024-10-10 23:39:54,915 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 23:39:54,930 INFO L204 MainTranslator]: Completed translation [2024-10-10 23:39:54,931 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:39:54 WrapperNode [2024-10-10 23:39:54,931 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-10 23:39:54,932 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-10 23:39:54,932 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-10 23:39:54,932 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-10 23:39:54,937 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:39:54" (1/1) ... [2024-10-10 23:39:54,963 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:39:54" (1/1) ... [2024-10-10 23:39:55,046 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1770 [2024-10-10 23:39:55,046 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-10 23:39:55,047 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-10 23:39:55,047 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-10 23:39:55,047 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-10 23:39:55,056 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:39:54" (1/1) ... [2024-10-10 23:39:55,057 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:39:54" (1/1) ... [2024-10-10 23:39:55,067 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:39:54" (1/1) ... [2024-10-10 23:39:55,153 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]. [2024-10-10 23:39:55,154 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:39:54" (1/1) ... [2024-10-10 23:39:55,154 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:39:54" (1/1) ... [2024-10-10 23:39:55,182 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:39:54" (1/1) ... [2024-10-10 23:39:55,190 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:39:54" (1/1) ... [2024-10-10 23:39:55,199 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:39:54" (1/1) ... [2024-10-10 23:39:55,206 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:39:54" (1/1) ... [2024-10-10 23:39:55,224 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-10 23:39:55,224 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-10 23:39:55,225 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-10 23:39:55,225 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-10 23:39:55,225 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:39:54" (1/1) ... [2024-10-10 23:39:55,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 23:39:55,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:39:55,254 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-10 23:39:55,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-10 23:39:55,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-10 23:39:55,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-10 23:39:55,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-10 23:39:55,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-10 23:39:55,343 INFO L238 CfgBuilder]: Building ICFG [2024-10-10 23:39:55,345 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-10 23:39:56,895 INFO L? ?]: Removed 276 outVars from TransFormulas that were not future-live. [2024-10-10 23:39:56,895 INFO L287 CfgBuilder]: Performing block encoding [2024-10-10 23:39:56,943 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-10 23:39:56,944 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-10 23:39:56,944 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 11:39:56 BoogieIcfgContainer [2024-10-10 23:39:56,944 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-10 23:39:56,945 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-10 23:39:56,946 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-10 23:39:56,948 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-10 23:39:56,948 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.10 11:39:54" (1/3) ... [2024-10-10 23:39:56,949 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34992026 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 11:39:56, skipping insertion in model container [2024-10-10 23:39:56,949 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:39:54" (2/3) ... [2024-10-10 23:39:56,949 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34992026 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 11:39:56, skipping insertion in model container [2024-10-10 23:39:56,949 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 11:39:56" (3/3) ... [2024-10-10 23:39:56,950 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label01.c [2024-10-10 23:39:56,963 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-10 23:39:56,963 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-10 23:39:57,020 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-10 23:39:57,026 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;@398fc8d4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-10 23:39:57,027 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-10 23:39:57,031 INFO L276 IsEmpty]: Start isEmpty. Operand has 334 states, 332 states have (on average 1.9909638554216869) internal successors, (661), 333 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:39:57,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-10-10 23:39:57,037 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:39:57,037 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] [2024-10-10 23:39:57,038 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:39:57,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:39:57,043 INFO L85 PathProgramCache]: Analyzing trace with hash -75911303, now seen corresponding path program 1 times [2024-10-10 23:39:57,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:39:57,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372792151] [2024-10-10 23:39:57,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:39:57,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:39:57,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:39:57,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:39:57,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:39:57,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372792151] [2024-10-10 23:39:57,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372792151] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:39:57,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:39:57,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 23:39:57,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644022130] [2024-10-10 23:39:57,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:39:57,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-10 23:39:57,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:39:57,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-10 23:39:57,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-10 23:39:57,208 INFO L87 Difference]: Start difference. First operand has 334 states, 332 states have (on average 1.9909638554216869) internal successors, (661), 333 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:39:57,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:39:57,247 INFO L93 Difference]: Finished difference Result 667 states and 1321 transitions. [2024-10-10 23:39:57,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-10 23:39:57,249 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2024-10-10 23:39:57,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:39:57,258 INFO L225 Difference]: With dead ends: 667 [2024-10-10 23:39:57,258 INFO L226 Difference]: Without dead ends: 332 [2024-10-10 23:39:57,261 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-10 23:39:57,263 INFO L432 NwaCegarLoop]: 596 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 23:39:57,264 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 596 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 23:39:57,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2024-10-10 23:39:57,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 332. [2024-10-10 23:39:57,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 331 states have (on average 1.8006042296072509) internal successors, (596), 331 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:39:57,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 596 transitions. [2024-10-10 23:39:57,302 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 596 transitions. Word has length 25 [2024-10-10 23:39:57,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:39:57,302 INFO L471 AbstractCegarLoop]: Abstraction has 332 states and 596 transitions. [2024-10-10 23:39:57,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:39:57,303 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 596 transitions. [2024-10-10 23:39:57,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-10-10 23:39:57,303 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:39:57,304 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] [2024-10-10 23:39:57,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-10 23:39:57,307 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:39:57,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:39:57,308 INFO L85 PathProgramCache]: Analyzing trace with hash -327483777, now seen corresponding path program 1 times [2024-10-10 23:39:57,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:39:57,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822098776] [2024-10-10 23:39:57,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:39:57,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:39:57,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:39:57,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:39:57,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:39:57,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822098776] [2024-10-10 23:39:57,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822098776] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:39:57,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:39:57,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 23:39:57,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292633615] [2024-10-10 23:39:57,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:39:57,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:39:57,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:39:57,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:39:57,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:39:57,439 INFO L87 Difference]: Start difference. First operand 332 states and 596 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:39:58,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:39:58,814 INFO L93 Difference]: Finished difference Result 992 states and 1785 transitions. [2024-10-10 23:39:58,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:39:58,814 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2024-10-10 23:39:58,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:39:58,817 INFO L225 Difference]: With dead ends: 992 [2024-10-10 23:39:58,818 INFO L226 Difference]: Without dead ends: 661 [2024-10-10 23:39:58,819 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:39:58,820 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 324 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 935 mSolverCounterSat, 384 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 1319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 384 IncrementalHoareTripleChecker+Valid, 935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-10 23:39:58,820 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 77 Invalid, 1319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [384 Valid, 935 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-10 23:39:58,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2024-10-10 23:39:58,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 661. [2024-10-10 23:39:58,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 661 states, 660 states have (on average 1.7015151515151514) internal successors, (1123), 660 states have internal predecessors, (1123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:39:58,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 1123 transitions. [2024-10-10 23:39:58,843 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 1123 transitions. Word has length 25 [2024-10-10 23:39:58,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:39:58,843 INFO L471 AbstractCegarLoop]: Abstraction has 661 states and 1123 transitions. [2024-10-10 23:39:58,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:39:58,843 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 1123 transitions. [2024-10-10 23:39:58,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-10 23:39:58,845 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:39:58,845 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:39:58,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-10 23:39:58,847 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:39:58,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:39:58,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1288312158, now seen corresponding path program 1 times [2024-10-10 23:39:58,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:39:58,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905564621] [2024-10-10 23:39:58,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:39:58,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:39:58,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:39:58,986 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:39:58,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:39:58,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905564621] [2024-10-10 23:39:58,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905564621] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:39:58,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:39:58,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 23:39:58,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913770321] [2024-10-10 23:39:58,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:39:58,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:39:58,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:39:58,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:39:58,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:39:58,988 INFO L87 Difference]: Start difference. First operand 661 states and 1123 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:00,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:40:00,138 INFO L93 Difference]: Finished difference Result 1979 states and 3366 transitions. [2024-10-10 23:40:00,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:40:00,139 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2024-10-10 23:40:00,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:40:00,143 INFO L225 Difference]: With dead ends: 1979 [2024-10-10 23:40:00,144 INFO L226 Difference]: Without dead ends: 1319 [2024-10-10 23:40:00,145 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:40:00,146 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 343 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 883 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 1284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-10 23:40:00,147 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 75 Invalid, 1284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [401 Valid, 883 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-10 23:40:00,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1319 states. [2024-10-10 23:40:00,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1319 to 1319. [2024-10-10 23:40:00,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1319 states, 1318 states have (on average 1.6206373292867982) internal successors, (2136), 1318 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:00,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 2136 transitions. [2024-10-10 23:40:00,181 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 2136 transitions. Word has length 91 [2024-10-10 23:40:00,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:40:00,181 INFO L471 AbstractCegarLoop]: Abstraction has 1319 states and 2136 transitions. [2024-10-10 23:40:00,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:00,181 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 2136 transitions. [2024-10-10 23:40:00,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-10-10 23:40:00,183 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:40:00,183 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:40:00,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-10 23:40:00,184 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:40:00,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:40:00,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1448366186, now seen corresponding path program 1 times [2024-10-10 23:40:00,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:40:00,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124827424] [2024-10-10 23:40:00,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:40:00,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:40:00,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:40:00,286 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:40:00,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:40:00,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124827424] [2024-10-10 23:40:00,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124827424] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:40:00,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:40:00,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 23:40:00,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041552970] [2024-10-10 23:40:00,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:40:00,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:40:00,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:40:00,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:40:00,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:40:00,288 INFO L87 Difference]: Start difference. First operand 1319 states and 2136 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:01,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:40:01,523 INFO L93 Difference]: Finished difference Result 3295 states and 5284 transitions. [2024-10-10 23:40:01,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:40:01,524 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2024-10-10 23:40:01,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:40:01,529 INFO L225 Difference]: With dead ends: 3295 [2024-10-10 23:40:01,530 INFO L226 Difference]: Without dead ends: 1977 [2024-10-10 23:40:01,532 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:40:01,533 INFO L432 NwaCegarLoop]: 149 mSDtfsCounter, 381 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 1119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-10 23:40:01,533 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 153 Invalid, 1119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [307 Valid, 812 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-10 23:40:01,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1977 states. [2024-10-10 23:40:01,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1977 to 1977. [2024-10-10 23:40:01,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1977 states, 1976 states have (on average 1.33248987854251) internal successors, (2633), 1976 states have internal predecessors, (2633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:01,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1977 states to 1977 states and 2633 transitions. [2024-10-10 23:40:01,570 INFO L78 Accepts]: Start accepts. Automaton has 1977 states and 2633 transitions. Word has length 92 [2024-10-10 23:40:01,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:40:01,571 INFO L471 AbstractCegarLoop]: Abstraction has 1977 states and 2633 transitions. [2024-10-10 23:40:01,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:01,571 INFO L276 IsEmpty]: Start isEmpty. Operand 1977 states and 2633 transitions. [2024-10-10 23:40:01,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-10-10 23:40:01,577 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:40:01,577 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:40:01,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-10 23:40:01,578 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:40:01,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:40:01,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1551584592, now seen corresponding path program 1 times [2024-10-10 23:40:01,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:40:01,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134184648] [2024-10-10 23:40:01,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:40:01,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:40:01,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:40:01,808 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:40:01,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:40:01,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134184648] [2024-10-10 23:40:01,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134184648] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:40:01,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:40:01,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 23:40:01,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302209978] [2024-10-10 23:40:01,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:40:01,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:40:01,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:40:01,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:40:01,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:40:01,813 INFO L87 Difference]: Start difference. First operand 1977 states and 2633 transitions. Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 2 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:02,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:40:02,934 INFO L93 Difference]: Finished difference Result 5927 states and 7896 transitions. [2024-10-10 23:40:02,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:40:02,935 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 2 states have internal predecessors, (184), 0 states have call successors, (0), 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 184 [2024-10-10 23:40:02,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:40:02,945 INFO L225 Difference]: With dead ends: 5927 [2024-10-10 23:40:02,945 INFO L226 Difference]: Without dead ends: 3951 [2024-10-10 23:40:02,947 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:40:02,948 INFO L432 NwaCegarLoop]: 251 mSDtfsCounter, 183 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 380 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 1206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 380 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-10 23:40:02,948 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 255 Invalid, 1206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [380 Valid, 826 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-10 23:40:02,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3951 states. [2024-10-10 23:40:02,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3951 to 3951. [2024-10-10 23:40:02,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3951 states, 3950 states have (on average 1.2172151898734178) internal successors, (4808), 3950 states have internal predecessors, (4808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:02,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3951 states to 3951 states and 4808 transitions. [2024-10-10 23:40:02,998 INFO L78 Accepts]: Start accepts. Automaton has 3951 states and 4808 transitions. Word has length 184 [2024-10-10 23:40:02,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:40:02,998 INFO L471 AbstractCegarLoop]: Abstraction has 3951 states and 4808 transitions. [2024-10-10 23:40:02,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 2 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:02,999 INFO L276 IsEmpty]: Start isEmpty. Operand 3951 states and 4808 transitions. [2024-10-10 23:40:03,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2024-10-10 23:40:03,001 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:40:03,001 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:40:03,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-10 23:40:03,001 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:40:03,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:40:03,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1954226722, now seen corresponding path program 1 times [2024-10-10 23:40:03,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:40:03,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333846398] [2024-10-10 23:40:03,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:40:03,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:40:03,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:40:03,310 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-10 23:40:03,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:40:03,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333846398] [2024-10-10 23:40:03,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333846398] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 23:40:03,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986497222] [2024-10-10 23:40:03,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:40:03,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:40:03,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:40:03,316 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 23:40:03,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-10 23:40:03,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:40:03,428 INFO L255 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-10 23:40:03,436 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 23:40:03,735 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-10-10 23:40:03,735 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 23:40:03,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986497222] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:40:03,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 23:40:03,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-10-10 23:40:03,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557298617] [2024-10-10 23:40:03,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:40:03,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:40:03,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:40:03,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:40:03,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-10 23:40:03,738 INFO L87 Difference]: Start difference. First operand 3951 states and 4808 transitions. Second operand has 3 states, 3 states have (on average 82.0) internal successors, (246), 2 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:04,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:40:04,445 INFO L93 Difference]: Finished difference Result 5269 states and 6253 transitions. [2024-10-10 23:40:04,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:40:04,446 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 2 states have internal predecessors, (246), 0 states have call successors, (0), 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 268 [2024-10-10 23:40:04,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:40:04,458 INFO L225 Difference]: With dead ends: 5269 [2024-10-10 23:40:04,458 INFO L226 Difference]: Without dead ends: 5267 [2024-10-10 23:40:04,460 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-10 23:40:04,460 INFO L432 NwaCegarLoop]: 151 mSDtfsCounter, 109 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 995 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 1027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-10 23:40:04,461 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 156 Invalid, 1027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 995 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-10 23:40:04,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5267 states. [2024-10-10 23:40:04,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5267 to 4609. [2024-10-10 23:40:04,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4609 states, 4608 states have (on average 1.2013888888888888) internal successors, (5536), 4608 states have internal predecessors, (5536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:04,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4609 states to 4609 states and 5536 transitions. [2024-10-10 23:40:04,514 INFO L78 Accepts]: Start accepts. Automaton has 4609 states and 5536 transitions. Word has length 268 [2024-10-10 23:40:04,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:40:04,515 INFO L471 AbstractCegarLoop]: Abstraction has 4609 states and 5536 transitions. [2024-10-10 23:40:04,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 2 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:04,515 INFO L276 IsEmpty]: Start isEmpty. Operand 4609 states and 5536 transitions. [2024-10-10 23:40:04,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2024-10-10 23:40:04,519 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:40:04,519 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:40:04,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-10 23:40:04,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:40:04,720 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:40:04,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:40:04,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1598322792, now seen corresponding path program 1 times [2024-10-10 23:40:04,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:40:04,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93273244] [2024-10-10 23:40:04,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:40:04,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:40:04,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:40:05,251 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-10 23:40:05,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:40:05,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93273244] [2024-10-10 23:40:05,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93273244] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:40:05,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:40:05,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:40:05,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170613779] [2024-10-10 23:40:05,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:40:05,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 23:40:05,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:40:05,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 23:40:05,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-10 23:40:05,254 INFO L87 Difference]: Start difference. First operand 4609 states and 5536 transitions. Second operand has 4 states, 4 states have (on average 88.5) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:06,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:40:06,493 INFO L93 Difference]: Finished difference Result 9546 states and 11412 transitions. [2024-10-10 23:40:06,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 23:40:06,494 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 88.5) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 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 377 [2024-10-10 23:40:06,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:40:06,507 INFO L225 Difference]: With dead ends: 9546 [2024-10-10 23:40:06,507 INFO L226 Difference]: Without dead ends: 4938 [2024-10-10 23:40:06,512 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-10 23:40:06,513 INFO L432 NwaCegarLoop]: 265 mSDtfsCounter, 127 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 1471 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 1476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-10 23:40:06,514 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 318 Invalid, 1476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1471 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-10 23:40:06,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4938 states. [2024-10-10 23:40:06,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4938 to 4938. [2024-10-10 23:40:06,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4938 states, 4937 states have (on average 1.1891837148065627) internal successors, (5871), 4937 states have internal predecessors, (5871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:06,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4938 states to 4938 states and 5871 transitions. [2024-10-10 23:40:06,580 INFO L78 Accepts]: Start accepts. Automaton has 4938 states and 5871 transitions. Word has length 377 [2024-10-10 23:40:06,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:40:06,581 INFO L471 AbstractCegarLoop]: Abstraction has 4938 states and 5871 transitions. [2024-10-10 23:40:06,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.5) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:06,581 INFO L276 IsEmpty]: Start isEmpty. Operand 4938 states and 5871 transitions. [2024-10-10 23:40:06,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2024-10-10 23:40:06,586 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:40:06,586 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-10 23:40:06,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-10 23:40:06,587 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:40:06,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:40:06,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1333342165, now seen corresponding path program 1 times [2024-10-10 23:40:06,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:40:06,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551623375] [2024-10-10 23:40:06,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:40:06,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:40:06,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:40:07,153 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2024-10-10 23:40:07,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:40:07,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551623375] [2024-10-10 23:40:07,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551623375] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 23:40:07,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525887710] [2024-10-10 23:40:07,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:40:07,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:40:07,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:40:07,155 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 23:40:07,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-10 23:40:07,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:40:07,276 INFO L255 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-10 23:40:07,286 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 23:40:07,752 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2024-10-10 23:40:07,752 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 23:40:11,241 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2024-10-10 23:40:11,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525887710] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 23:40:11,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 23:40:11,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-10-10 23:40:11,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461149801] [2024-10-10 23:40:11,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 23:40:11,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-10 23:40:11,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:40:11,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-10 23:40:11,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-10-10 23:40:11,245 INFO L87 Difference]: Start difference. First operand 4938 states and 5871 transitions. Second operand has 8 states, 8 states have (on average 98.0) internal successors, (784), 7 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:14,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:40:14,904 INFO L93 Difference]: Finished difference Result 16126 states and 19197 transitions. [2024-10-10 23:40:14,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-10 23:40:14,906 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 98.0) internal successors, (784), 7 states have internal predecessors, (784), 0 states have call successors, (0), 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 439 [2024-10-10 23:40:14,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:40:14,933 INFO L225 Difference]: With dead ends: 16126 [2024-10-10 23:40:14,934 INFO L226 Difference]: Without dead ends: 11518 [2024-10-10 23:40:14,943 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 882 GetRequests, 873 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-10-10 23:40:14,944 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 1463 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 4042 mSolverCounterSat, 1360 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1463 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 5402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1360 IncrementalHoareTripleChecker+Valid, 4042 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-10-10 23:40:14,944 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1463 Valid, 38 Invalid, 5402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1360 Valid, 4042 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-10-10 23:40:14,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11518 states. [2024-10-10 23:40:15,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11518 to 7899. [2024-10-10 23:40:15,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7899 states, 7898 states have (on average 1.1711825778678147) internal successors, (9250), 7898 states have internal predecessors, (9250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:15,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7899 states to 7899 states and 9250 transitions. [2024-10-10 23:40:15,077 INFO L78 Accepts]: Start accepts. Automaton has 7899 states and 9250 transitions. Word has length 439 [2024-10-10 23:40:15,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:40:15,078 INFO L471 AbstractCegarLoop]: Abstraction has 7899 states and 9250 transitions. [2024-10-10 23:40:15,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 98.0) internal successors, (784), 7 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:15,081 INFO L276 IsEmpty]: Start isEmpty. Operand 7899 states and 9250 transitions. [2024-10-10 23:40:15,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2024-10-10 23:40:15,087 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:40:15,087 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-10 23:40:15,101 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-10 23:40:15,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:40:15,288 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:40:15,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:40:15,289 INFO L85 PathProgramCache]: Analyzing trace with hash 298981501, now seen corresponding path program 1 times [2024-10-10 23:40:15,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:40:15,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979161600] [2024-10-10 23:40:15,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:40:15,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:40:15,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:40:15,713 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 278 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-10-10 23:40:15,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:40:15,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979161600] [2024-10-10 23:40:15,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979161600] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:40:15,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:40:15,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-10 23:40:15,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493908674] [2024-10-10 23:40:15,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:40:15,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-10 23:40:15,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:40:15,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-10 23:40:15,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-10 23:40:15,716 INFO L87 Difference]: Start difference. First operand 7899 states and 9250 transitions. Second operand has 7 states, 7 states have (on average 56.285714285714285) internal successors, (394), 6 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:16,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:40:16,979 INFO L93 Difference]: Finished difference Result 15511 states and 18191 transitions. [2024-10-10 23:40:16,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-10 23:40:16,980 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 56.285714285714285) internal successors, (394), 6 states have internal predecessors, (394), 0 states have call successors, (0), 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 464 [2024-10-10 23:40:16,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:40:16,995 INFO L225 Difference]: With dead ends: 15511 [2024-10-10 23:40:16,995 INFO L226 Difference]: Without dead ends: 7290 [2024-10-10 23:40:17,004 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-10 23:40:17,005 INFO L432 NwaCegarLoop]: 254 mSDtfsCounter, 321 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 1883 mSolverCounterSat, 667 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 2550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 667 IncrementalHoareTripleChecker+Valid, 1883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-10 23:40:17,006 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 278 Invalid, 2550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [667 Valid, 1883 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-10 23:40:17,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7290 states. [2024-10-10 23:40:17,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7290 to 7266. [2024-10-10 23:40:17,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7266 states, 7265 states have (on average 1.0762560220233999) internal successors, (7819), 7265 states have internal predecessors, (7819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:17,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7266 states to 7266 states and 7819 transitions. [2024-10-10 23:40:17,083 INFO L78 Accepts]: Start accepts. Automaton has 7266 states and 7819 transitions. Word has length 464 [2024-10-10 23:40:17,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:40:17,084 INFO L471 AbstractCegarLoop]: Abstraction has 7266 states and 7819 transitions. [2024-10-10 23:40:17,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 56.285714285714285) internal successors, (394), 6 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:17,085 INFO L276 IsEmpty]: Start isEmpty. Operand 7266 states and 7819 transitions. [2024-10-10 23:40:17,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2024-10-10 23:40:17,123 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:40:17,124 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:40:17,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-10 23:40:17,124 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:40:17,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:40:17,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1060201964, now seen corresponding path program 1 times [2024-10-10 23:40:17,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:40:17,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911146771] [2024-10-10 23:40:17,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:40:17,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:40:17,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:40:17,488 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 418 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-10 23:40:17,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:40:17,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911146771] [2024-10-10 23:40:17,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911146771] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:40:17,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:40:17,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:40:17,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13144736] [2024-10-10 23:40:17,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:40:17,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:40:17,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:40:17,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:40:17,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:40:17,490 INFO L87 Difference]: Start difference. First operand 7266 states and 7819 transitions. Second operand has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:18,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:40:18,157 INFO L93 Difference]: Finished difference Result 16176 states and 17517 transitions. [2024-10-10 23:40:18,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:40:18,157 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 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 526 [2024-10-10 23:40:18,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:40:18,169 INFO L225 Difference]: With dead ends: 16176 [2024-10-10 23:40:18,169 INFO L226 Difference]: Without dead ends: 9240 [2024-10-10 23:40:18,176 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:40:18,177 INFO L432 NwaCegarLoop]: 448 mSDtfsCounter, 171 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-10 23:40:18,178 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 453 Invalid, 912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-10 23:40:18,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9240 states. [2024-10-10 23:40:18,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9240 to 7924. [2024-10-10 23:40:18,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7924 states, 7923 states have (on average 1.0663889940679037) internal successors, (8449), 7923 states have internal predecessors, (8449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:18,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7924 states to 7924 states and 8449 transitions. [2024-10-10 23:40:18,249 INFO L78 Accepts]: Start accepts. Automaton has 7924 states and 8449 transitions. Word has length 526 [2024-10-10 23:40:18,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:40:18,250 INFO L471 AbstractCegarLoop]: Abstraction has 7924 states and 8449 transitions. [2024-10-10 23:40:18,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:18,250 INFO L276 IsEmpty]: Start isEmpty. Operand 7924 states and 8449 transitions. [2024-10-10 23:40:18,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2024-10-10 23:40:18,252 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:40:18,253 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:40:18,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-10 23:40:18,254 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:40:18,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:40:18,254 INFO L85 PathProgramCache]: Analyzing trace with hash -395972252, now seen corresponding path program 1 times [2024-10-10 23:40:18,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:40:18,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703564297] [2024-10-10 23:40:18,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:40:18,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:40:18,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:40:18,672 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 47 proven. 242 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:40:18,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:40:18,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703564297] [2024-10-10 23:40:18,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703564297] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 23:40:18,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882362080] [2024-10-10 23:40:18,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:40:18,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:40:18,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:40:18,677 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 23:40:18,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-10 23:40:18,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:40:18,802 INFO L255 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-10 23:40:18,808 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 23:40:19,242 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:40:19,242 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 23:40:19,809 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 47 proven. 242 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:40:19,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882362080] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 23:40:19,809 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 23:40:19,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-10 23:40:19,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142960922] [2024-10-10 23:40:19,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 23:40:19,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-10 23:40:19,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:40:19,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-10 23:40:19,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2024-10-10 23:40:19,814 INFO L87 Difference]: Start difference. First operand 7924 states and 8449 transitions. Second operand has 11 states, 11 states have (on average 146.0) internal successors, (1606), 10 states have internal predecessors, (1606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:22,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:40:22,025 INFO L93 Difference]: Finished difference Result 22477 states and 23946 transitions. [2024-10-10 23:40:22,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-10 23:40:22,026 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 146.0) internal successors, (1606), 10 states have internal predecessors, (1606), 0 states have call successors, (0), 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 536 [2024-10-10 23:40:22,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:40:22,045 INFO L225 Difference]: With dead ends: 22477 [2024-10-10 23:40:22,046 INFO L226 Difference]: Without dead ends: 14834 [2024-10-10 23:40:22,055 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1074 GetRequests, 1065 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2024-10-10 23:40:22,056 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 992 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 3828 mSolverCounterSat, 580 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 992 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 4408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 580 IncrementalHoareTripleChecker+Valid, 3828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-10-10 23:40:22,056 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [992 Valid, 57 Invalid, 4408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [580 Valid, 3828 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-10-10 23:40:22,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14834 states. [2024-10-10 23:40:22,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14834 to 9568. [2024-10-10 23:40:22,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9568 states, 9567 states have (on average 1.061774851050486) internal successors, (10158), 9567 states have internal predecessors, (10158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:22,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9568 states to 9568 states and 10158 transitions. [2024-10-10 23:40:22,158 INFO L78 Accepts]: Start accepts. Automaton has 9568 states and 10158 transitions. Word has length 536 [2024-10-10 23:40:22,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:40:22,158 INFO L471 AbstractCegarLoop]: Abstraction has 9568 states and 10158 transitions. [2024-10-10 23:40:22,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 146.0) internal successors, (1606), 10 states have internal predecessors, (1606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:22,159 INFO L276 IsEmpty]: Start isEmpty. Operand 9568 states and 10158 transitions. [2024-10-10 23:40:22,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 668 [2024-10-10 23:40:22,163 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:40:22,164 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-10 23:40:22,197 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-10 23:40:22,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:40:22,365 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:40:22,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:40:22,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1570146208, now seen corresponding path program 1 times [2024-10-10 23:40:22,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:40:22,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585217926] [2024-10-10 23:40:22,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:40:22,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:40:22,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:40:22,807 INFO L134 CoverageAnalysis]: Checked inductivity of 1018 backedges. 808 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-10-10 23:40:22,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:40:22,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585217926] [2024-10-10 23:40:22,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585217926] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:40:22,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:40:22,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:40:22,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416152545] [2024-10-10 23:40:22,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:40:22,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:40:22,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:40:22,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:40:22,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:40:22,809 INFO L87 Difference]: Start difference. First operand 9568 states and 10158 transitions. Second operand has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:23,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:40:23,480 INFO L93 Difference]: Finished difference Result 21438 states and 22948 transitions. [2024-10-10 23:40:23,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:40:23,480 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 0 states have call successors, (0), 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 667 [2024-10-10 23:40:23,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:40:23,495 INFO L225 Difference]: With dead ends: 21438 [2024-10-10 23:40:23,495 INFO L226 Difference]: Without dead ends: 12529 [2024-10-10 23:40:23,503 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:40:23,504 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 224 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 771 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-10 23:40:23,504 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 37 Invalid, 894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 771 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-10 23:40:23,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12529 states. [2024-10-10 23:40:23,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12529 to 12529. [2024-10-10 23:40:23,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12529 states, 12528 states have (on average 1.0679278416347382) internal successors, (13379), 12528 states have internal predecessors, (13379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:23,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12529 states to 12529 states and 13379 transitions. [2024-10-10 23:40:23,668 INFO L78 Accepts]: Start accepts. Automaton has 12529 states and 13379 transitions. Word has length 667 [2024-10-10 23:40:23,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:40:23,669 INFO L471 AbstractCegarLoop]: Abstraction has 12529 states and 13379 transitions. [2024-10-10 23:40:23,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:23,669 INFO L276 IsEmpty]: Start isEmpty. Operand 12529 states and 13379 transitions. [2024-10-10 23:40:23,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 757 [2024-10-10 23:40:23,681 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:40:23,682 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:40:23,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-10 23:40:23,682 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:40:23,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:40:23,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1263986898, now seen corresponding path program 1 times [2024-10-10 23:40:23,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:40:23,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528514987] [2024-10-10 23:40:23,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:40:23,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:40:23,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:40:24,035 INFO L134 CoverageAnalysis]: Checked inductivity of 1041 backedges. 646 proven. 0 refuted. 0 times theorem prover too weak. 395 trivial. 0 not checked. [2024-10-10 23:40:24,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:40:24,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528514987] [2024-10-10 23:40:24,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528514987] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:40:24,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:40:24,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:40:24,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253858681] [2024-10-10 23:40:24,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:40:24,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:40:24,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:40:24,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:40:24,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:40:24,040 INFO L87 Difference]: Start difference. First operand 12529 states and 13379 transitions. Second operand has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:24,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:40:24,717 INFO L93 Difference]: Finished difference Result 27689 states and 29727 transitions. [2024-10-10 23:40:24,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:40:24,718 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 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 756 [2024-10-10 23:40:24,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:40:24,733 INFO L225 Difference]: With dead ends: 27689 [2024-10-10 23:40:24,733 INFO L226 Difference]: Without dead ends: 15819 [2024-10-10 23:40:24,740 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:40:24,742 INFO L432 NwaCegarLoop]: 434 mSDtfsCounter, 220 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 766 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-10 23:40:24,742 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 439 Invalid, 872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 766 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-10 23:40:24,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15819 states. [2024-10-10 23:40:24,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15819 to 15161. [2024-10-10 23:40:24,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15161 states, 15160 states have (on average 1.0593667546174141) internal successors, (16060), 15160 states have internal predecessors, (16060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:24,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15161 states to 15161 states and 16060 transitions. [2024-10-10 23:40:24,870 INFO L78 Accepts]: Start accepts. Automaton has 15161 states and 16060 transitions. Word has length 756 [2024-10-10 23:40:24,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:40:24,871 INFO L471 AbstractCegarLoop]: Abstraction has 15161 states and 16060 transitions. [2024-10-10 23:40:24,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:24,871 INFO L276 IsEmpty]: Start isEmpty. Operand 15161 states and 16060 transitions. [2024-10-10 23:40:24,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 758 [2024-10-10 23:40:24,881 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:40:24,881 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:40:24,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-10 23:40:24,882 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:40:24,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:40:24,882 INFO L85 PathProgramCache]: Analyzing trace with hash -270075577, now seen corresponding path program 1 times [2024-10-10 23:40:24,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:40:24,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295737727] [2024-10-10 23:40:24,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:40:24,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:40:24,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:40:25,217 INFO L134 CoverageAnalysis]: Checked inductivity of 1045 backedges. 385 proven. 0 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2024-10-10 23:40:25,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:40:25,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295737727] [2024-10-10 23:40:25,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295737727] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:40:25,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:40:25,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:40:25,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057977723] [2024-10-10 23:40:25,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:40:25,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:40:25,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:40:25,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:40:25,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:40:25,221 INFO L87 Difference]: Start difference. First operand 15161 states and 16060 transitions. Second operand has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:25,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:40:25,884 INFO L93 Difference]: Finished difference Result 34598 states and 36793 transitions. [2024-10-10 23:40:25,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:40:25,884 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 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 757 [2024-10-10 23:40:25,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:40:25,903 INFO L225 Difference]: With dead ends: 34598 [2024-10-10 23:40:25,903 INFO L226 Difference]: Without dead ends: 18780 [2024-10-10 23:40:25,911 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:40:25,912 INFO L432 NwaCegarLoop]: 422 mSDtfsCounter, 273 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 749 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-10 23:40:25,912 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 426 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 749 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-10 23:40:25,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18780 states. [2024-10-10 23:40:26,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18780 to 18451. [2024-10-10 23:40:26,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18451 states, 18450 states have (on average 1.0428726287262873) internal successors, (19241), 18450 states have internal predecessors, (19241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:26,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18451 states to 18451 states and 19241 transitions. [2024-10-10 23:40:26,054 INFO L78 Accepts]: Start accepts. Automaton has 18451 states and 19241 transitions. Word has length 757 [2024-10-10 23:40:26,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:40:26,055 INFO L471 AbstractCegarLoop]: Abstraction has 18451 states and 19241 transitions. [2024-10-10 23:40:26,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:26,055 INFO L276 IsEmpty]: Start isEmpty. Operand 18451 states and 19241 transitions. [2024-10-10 23:40:26,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 770 [2024-10-10 23:40:26,063 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:40:26,064 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:40:26,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-10 23:40:26,064 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:40:26,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:40:26,064 INFO L85 PathProgramCache]: Analyzing trace with hash 803629993, now seen corresponding path program 1 times [2024-10-10 23:40:26,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:40:26,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816858678] [2024-10-10 23:40:26,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:40:26,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:40:26,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:40:26,386 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 421 proven. 0 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2024-10-10 23:40:26,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:40:26,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816858678] [2024-10-10 23:40:26,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816858678] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:40:26,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:40:26,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:40:26,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763223162] [2024-10-10 23:40:26,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:40:26,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:40:26,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:40:26,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:40:26,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:40:26,389 INFO L87 Difference]: Start difference. First operand 18451 states and 19241 transitions. Second operand has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:27,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:40:27,050 INFO L93 Difference]: Finished difference Result 36243 states and 37818 transitions. [2024-10-10 23:40:27,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:40:27,050 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 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 769 [2024-10-10 23:40:27,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:40:27,068 INFO L225 Difference]: With dead ends: 36243 [2024-10-10 23:40:27,068 INFO L226 Difference]: Without dead ends: 18451 [2024-10-10 23:40:27,080 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:40:27,080 INFO L432 NwaCegarLoop]: 421 mSDtfsCounter, 251 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-10 23:40:27,081 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 426 Invalid, 827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 759 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-10 23:40:27,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18451 states. [2024-10-10 23:40:27,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18451 to 18122. [2024-10-10 23:40:27,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18122 states, 18121 states have (on average 1.0321726174052204) internal successors, (18704), 18121 states have internal predecessors, (18704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:27,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18122 states to 18122 states and 18704 transitions. [2024-10-10 23:40:27,236 INFO L78 Accepts]: Start accepts. Automaton has 18122 states and 18704 transitions. Word has length 769 [2024-10-10 23:40:27,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:40:27,237 INFO L471 AbstractCegarLoop]: Abstraction has 18122 states and 18704 transitions. [2024-10-10 23:40:27,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:27,237 INFO L276 IsEmpty]: Start isEmpty. Operand 18122 states and 18704 transitions. [2024-10-10 23:40:27,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 786 [2024-10-10 23:40:27,246 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:40:27,247 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:40:27,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-10 23:40:27,247 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:40:27,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:40:27,248 INFO L85 PathProgramCache]: Analyzing trace with hash 82416918, now seen corresponding path program 1 times [2024-10-10 23:40:27,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:40:27,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195384992] [2024-10-10 23:40:27,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:40:27,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:40:27,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:40:28,088 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 48 proven. 507 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-10-10 23:40:28,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:40:28,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195384992] [2024-10-10 23:40:28,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195384992] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 23:40:28,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604077511] [2024-10-10 23:40:28,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:40:28,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:40:28,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:40:28,091 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 23:40:28,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-10 23:40:28,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:40:28,252 INFO L255 TraceCheckSpWp]: Trace formula consists of 905 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-10 23:40:28,257 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 23:40:28,294 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 729 trivial. 0 not checked. [2024-10-10 23:40:28,294 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 23:40:28,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604077511] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:40:28,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 23:40:28,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-10-10 23:40:28,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517425629] [2024-10-10 23:40:28,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:40:28,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:40:28,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:40:28,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:40:28,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-10 23:40:28,296 INFO L87 Difference]: Start difference. First operand 18122 states and 18704 transitions. Second operand has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:28,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:40:28,860 INFO L93 Difference]: Finished difference Result 35585 states and 36744 transitions. [2024-10-10 23:40:28,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:40:28,860 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 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 785 [2024-10-10 23:40:28,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:40:28,922 INFO L225 Difference]: With dead ends: 35585 [2024-10-10 23:40:28,922 INFO L226 Difference]: Without dead ends: 18122 [2024-10-10 23:40:28,929 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 789 GetRequests, 785 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-10 23:40:28,930 INFO L432 NwaCegarLoop]: 369 mSDtfsCounter, 341 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 777 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-10 23:40:28,930 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 374 Invalid, 795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 777 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-10 23:40:28,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18122 states. [2024-10-10 23:40:29,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18122 to 18122. [2024-10-10 23:40:29,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18122 states, 18121 states have (on average 1.0290822802273605) internal successors, (18648), 18121 states have internal predecessors, (18648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:29,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18122 states to 18122 states and 18648 transitions. [2024-10-10 23:40:29,057 INFO L78 Accepts]: Start accepts. Automaton has 18122 states and 18648 transitions. Word has length 785 [2024-10-10 23:40:29,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:40:29,057 INFO L471 AbstractCegarLoop]: Abstraction has 18122 states and 18648 transitions. [2024-10-10 23:40:29,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:29,058 INFO L276 IsEmpty]: Start isEmpty. Operand 18122 states and 18648 transitions. [2024-10-10 23:40:29,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 925 [2024-10-10 23:40:29,069 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:40:29,070 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:40:29,084 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-10 23:40:29,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-10 23:40:29,271 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:40:29,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:40:29,271 INFO L85 PathProgramCache]: Analyzing trace with hash 102120427, now seen corresponding path program 1 times [2024-10-10 23:40:29,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:40:29,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518034827] [2024-10-10 23:40:29,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:40:29,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:40:29,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:40:30,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1240 backedges. 859 proven. 139 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2024-10-10 23:40:30,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:40:30,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518034827] [2024-10-10 23:40:30,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518034827] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 23:40:30,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517711622] [2024-10-10 23:40:30,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:40:30,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:40:30,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:40:30,218 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 23:40:30,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-10 23:40:30,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:40:30,416 INFO L255 TraceCheckSpWp]: Trace formula consists of 1066 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-10 23:40:30,422 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 23:40:31,309 INFO L134 CoverageAnalysis]: Checked inductivity of 1240 backedges. 811 proven. 0 refuted. 0 times theorem prover too weak. 429 trivial. 0 not checked. [2024-10-10 23:40:31,309 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 23:40:31,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [517711622] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:40:31,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 23:40:31,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-10-10 23:40:31,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006843982] [2024-10-10 23:40:31,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:40:31,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:40:31,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:40:31,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:40:31,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-10 23:40:31,311 INFO L87 Difference]: Start difference. First operand 18122 states and 18648 transitions. Second operand has 3 states, 3 states have (on average 174.0) internal successors, (522), 2 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:31,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:40:31,876 INFO L93 Difference]: Finished difference Result 35585 states and 36632 transitions. [2024-10-10 23:40:31,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:40:31,876 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 174.0) internal successors, (522), 2 states have internal predecessors, (522), 0 states have call successors, (0), 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 924 [2024-10-10 23:40:31,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:40:31,891 INFO L225 Difference]: With dead ends: 35585 [2024-10-10 23:40:31,891 INFO L226 Difference]: Without dead ends: 18122 [2024-10-10 23:40:31,902 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 928 GetRequests, 924 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-10 23:40:31,903 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 90 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 760 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-10 23:40:31,903 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 80 Invalid, 784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 760 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-10 23:40:31,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18122 states. [2024-10-10 23:40:32,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18122 to 18122. [2024-10-10 23:40:32,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18122 states, 18121 states have (on average 1.0288615418575133) internal successors, (18644), 18121 states have internal predecessors, (18644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:32,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18122 states to 18122 states and 18644 transitions. [2024-10-10 23:40:32,054 INFO L78 Accepts]: Start accepts. Automaton has 18122 states and 18644 transitions. Word has length 924 [2024-10-10 23:40:32,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:40:32,054 INFO L471 AbstractCegarLoop]: Abstraction has 18122 states and 18644 transitions. [2024-10-10 23:40:32,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.0) internal successors, (522), 2 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:32,055 INFO L276 IsEmpty]: Start isEmpty. Operand 18122 states and 18644 transitions. [2024-10-10 23:40:32,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1021 [2024-10-10 23:40:32,068 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:40:32,068 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-10 23:40:32,082 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-10 23:40:32,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-10 23:40:32,269 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:40:32,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:40:32,270 INFO L85 PathProgramCache]: Analyzing trace with hash 218045709, now seen corresponding path program 1 times [2024-10-10 23:40:32,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:40:32,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855102179] [2024-10-10 23:40:32,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:40:32,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:40:32,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:40:33,062 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 1253 proven. 0 refuted. 0 times theorem prover too weak. 683 trivial. 0 not checked. [2024-10-10 23:40:33,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:40:33,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855102179] [2024-10-10 23:40:33,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855102179] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:40:33,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:40:33,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:40:33,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045586295] [2024-10-10 23:40:33,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:40:33,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 23:40:33,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:40:33,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 23:40:33,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-10 23:40:33,064 INFO L87 Difference]: Start difference. First operand 18122 states and 18644 transitions. Second operand has 4 states, 4 states have (on average 167.5) internal successors, (670), 3 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:33,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:40:33,637 INFO L93 Difference]: Finished difference Result 35914 states and 36959 transitions. [2024-10-10 23:40:33,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:40:33,638 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 167.5) internal successors, (670), 3 states have internal predecessors, (670), 0 states have call successors, (0), 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 1020 [2024-10-10 23:40:33,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:40:33,654 INFO L225 Difference]: With dead ends: 35914 [2024-10-10 23:40:33,654 INFO L226 Difference]: Without dead ends: 18451 [2024-10-10 23:40:33,665 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-10 23:40:33,666 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 267 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-10 23:40:33,666 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 106 Invalid, 758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-10 23:40:33,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18451 states. [2024-10-10 23:40:33,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18451 to 18451. [2024-10-10 23:40:33,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18451 states, 18450 states have (on average 1.0284552845528456) internal successors, (18975), 18450 states have internal predecessors, (18975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:33,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18451 states to 18451 states and 18975 transitions. [2024-10-10 23:40:33,844 INFO L78 Accepts]: Start accepts. Automaton has 18451 states and 18975 transitions. Word has length 1020 [2024-10-10 23:40:33,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:40:33,844 INFO L471 AbstractCegarLoop]: Abstraction has 18451 states and 18975 transitions. [2024-10-10 23:40:33,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 167.5) internal successors, (670), 3 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:33,845 INFO L276 IsEmpty]: Start isEmpty. Operand 18451 states and 18975 transitions. [2024-10-10 23:40:33,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1082 [2024-10-10 23:40:33,858 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:40:33,858 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:40:33,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-10 23:40:33,858 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:40:33,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:40:33,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1440007017, now seen corresponding path program 1 times [2024-10-10 23:40:33,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:40:33,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776563796] [2024-10-10 23:40:33,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:40:33,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:40:33,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:40:34,303 INFO L134 CoverageAnalysis]: Checked inductivity of 2058 backedges. 1370 proven. 0 refuted. 0 times theorem prover too weak. 688 trivial. 0 not checked. [2024-10-10 23:40:34,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:40:34,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776563796] [2024-10-10 23:40:34,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776563796] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:40:34,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:40:34,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:40:34,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530304577] [2024-10-10 23:40:34,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:40:34,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:40:34,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:40:34,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:40:34,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:40:34,307 INFO L87 Difference]: Start difference. First operand 18451 states and 18975 transitions. Second operand has 3 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:35,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:40:35,001 INFO L93 Difference]: Finished difference Result 39204 states and 40353 transitions. [2024-10-10 23:40:35,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:40:35,001 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 0 states have call successors, (0), 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 1081 [2024-10-10 23:40:35,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:40:35,025 INFO L225 Difference]: With dead ends: 39204 [2024-10-10 23:40:35,025 INFO L226 Difference]: Without dead ends: 21412 [2024-10-10 23:40:35,037 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:40:35,038 INFO L432 NwaCegarLoop]: 424 mSDtfsCounter, 61 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-10 23:40:35,038 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 429 Invalid, 861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 812 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-10 23:40:35,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21412 states. [2024-10-10 23:40:35,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21412 to 20425. [2024-10-10 23:40:35,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20425 states, 20424 states have (on average 1.0277124951037995) internal successors, (20990), 20424 states have internal predecessors, (20990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:35,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20425 states to 20425 states and 20990 transitions. [2024-10-10 23:40:35,269 INFO L78 Accepts]: Start accepts. Automaton has 20425 states and 20990 transitions. Word has length 1081 [2024-10-10 23:40:35,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:40:35,269 INFO L471 AbstractCegarLoop]: Abstraction has 20425 states and 20990 transitions. [2024-10-10 23:40:35,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:35,270 INFO L276 IsEmpty]: Start isEmpty. Operand 20425 states and 20990 transitions. [2024-10-10 23:40:35,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1179 [2024-10-10 23:40:35,282 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:40:35,282 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:40:35,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-10 23:40:35,283 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:40:35,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:40:35,283 INFO L85 PathProgramCache]: Analyzing trace with hash 743246680, now seen corresponding path program 1 times [2024-10-10 23:40:35,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:40:35,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392424008] [2024-10-10 23:40:35,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:40:35,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:40:35,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:40:36,554 INFO L134 CoverageAnalysis]: Checked inductivity of 2379 backedges. 1396 proven. 139 refuted. 0 times theorem prover too weak. 844 trivial. 0 not checked. [2024-10-10 23:40:36,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:40:36,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392424008] [2024-10-10 23:40:36,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392424008] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 23:40:36,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021728597] [2024-10-10 23:40:36,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:40:36,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:40:36,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:40:36,556 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 23:40:36,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-10 23:40:36,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:40:36,776 INFO L255 TraceCheckSpWp]: Trace formula consists of 1362 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-10 23:40:36,814 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 23:40:37,745 INFO L134 CoverageAnalysis]: Checked inductivity of 2379 backedges. 770 proven. 24 refuted. 0 times theorem prover too weak. 1585 trivial. 0 not checked. [2024-10-10 23:40:37,747 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 23:40:37,974 INFO L134 CoverageAnalysis]: Checked inductivity of 2379 backedges. 794 proven. 0 refuted. 0 times theorem prover too weak. 1585 trivial. 0 not checked. [2024-10-10 23:40:37,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021728597] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-10 23:40:37,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-10 23:40:37,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 8 [2024-10-10 23:40:37,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977026450] [2024-10-10 23:40:37,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:40:37,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 23:40:37,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:40:37,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 23:40:37,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-10-10 23:40:37,977 INFO L87 Difference]: Start difference. First operand 20425 states and 20990 transitions. Second operand has 4 states, 4 states have (on average 110.25) internal successors, (441), 4 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:38,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:40:38,849 INFO L93 Difference]: Finished difference Result 21109 states and 21681 transitions. [2024-10-10 23:40:38,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 23:40:38,850 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 110.25) internal successors, (441), 4 states have internal predecessors, (441), 0 states have call successors, (0), 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 1178 [2024-10-10 23:40:38,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:40:38,870 INFO L225 Difference]: With dead ends: 21109 [2024-10-10 23:40:38,870 INFO L226 Difference]: Without dead ends: 21083 [2024-10-10 23:40:38,875 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2359 GetRequests, 2352 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-10-10 23:40:38,875 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 506 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-10 23:40:38,875 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [506 Valid, 10 Invalid, 953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-10 23:40:38,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21083 states. [2024-10-10 23:40:39,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21083 to 19109. [2024-10-10 23:40:39,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19109 states, 19108 states have (on average 1.0279464098806783) internal successors, (19642), 19108 states have internal predecessors, (19642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:39,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19109 states to 19109 states and 19642 transitions. [2024-10-10 23:40:39,101 INFO L78 Accepts]: Start accepts. Automaton has 19109 states and 19642 transitions. Word has length 1178 [2024-10-10 23:40:39,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:40:39,102 INFO L471 AbstractCegarLoop]: Abstraction has 19109 states and 19642 transitions. [2024-10-10 23:40:39,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 110.25) internal successors, (441), 4 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:39,102 INFO L276 IsEmpty]: Start isEmpty. Operand 19109 states and 19642 transitions. [2024-10-10 23:40:39,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1491 [2024-10-10 23:40:39,122 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:40:39,122 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:40:39,135 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-10 23:40:39,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2024-10-10 23:40:39,323 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:40:39,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:40:39,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1274651469, now seen corresponding path program 1 times [2024-10-10 23:40:39,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:40:39,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156984670] [2024-10-10 23:40:39,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:40:39,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:40:39,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:40:40,021 INFO L134 CoverageAnalysis]: Checked inductivity of 3980 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 3789 trivial. 0 not checked. [2024-10-10 23:40:40,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:40:40,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156984670] [2024-10-10 23:40:40,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156984670] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:40:40,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:40:40,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:40:40,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152856236] [2024-10-10 23:40:40,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:40:40,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:40:40,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:40:40,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:40:40,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:40:40,024 INFO L87 Difference]: Start difference. First operand 19109 states and 19642 transitions. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:40,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:40:40,655 INFO L93 Difference]: Finished difference Result 40520 states and 41654 transitions. [2024-10-10 23:40:40,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:40:40,655 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 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 1490 [2024-10-10 23:40:40,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:40:40,675 INFO L225 Difference]: With dead ends: 40520 [2024-10-10 23:40:40,676 INFO L226 Difference]: Without dead ends: 19109 [2024-10-10 23:40:40,689 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:40:40,690 INFO L432 NwaCegarLoop]: 405 mSDtfsCounter, 316 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 760 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-10 23:40:40,690 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 410 Invalid, 818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 760 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-10 23:40:40,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19109 states. [2024-10-10 23:40:40,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19109 to 17464. [2024-10-10 23:40:40,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17464 states, 17463 states have (on average 1.0257687682528775) internal successors, (17913), 17463 states have internal predecessors, (17913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:40,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17464 states to 17464 states and 17913 transitions. [2024-10-10 23:40:40,827 INFO L78 Accepts]: Start accepts. Automaton has 17464 states and 17913 transitions. Word has length 1490 [2024-10-10 23:40:40,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:40:40,828 INFO L471 AbstractCegarLoop]: Abstraction has 17464 states and 17913 transitions. [2024-10-10 23:40:40,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:40,828 INFO L276 IsEmpty]: Start isEmpty. Operand 17464 states and 17913 transitions. [2024-10-10 23:40:40,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1521 [2024-10-10 23:40:40,847 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:40:40,847 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-10 23:40:40,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-10 23:40:40,848 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:40:40,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:40:40,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1198828979, now seen corresponding path program 1 times [2024-10-10 23:40:40,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:40:40,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883656687] [2024-10-10 23:40:40,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:40:40,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:40:40,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:40:41,584 INFO L134 CoverageAnalysis]: Checked inductivity of 5006 backedges. 215 proven. 0 refuted. 0 times theorem prover too weak. 4791 trivial. 0 not checked. [2024-10-10 23:40:41,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:40:41,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883656687] [2024-10-10 23:40:41,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883656687] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:40:41,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:40:41,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:40:41,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351457897] [2024-10-10 23:40:41,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:40:41,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:40:41,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:40:41,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:40:41,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:40:41,586 INFO L87 Difference]: Start difference. First operand 17464 states and 17913 transitions. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:41,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:40:41,913 INFO L93 Difference]: Finished difference Result 17471 states and 17919 transitions. [2024-10-10 23:40:41,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:40:41,915 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 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 1520 [2024-10-10 23:40:41,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:40:41,928 INFO L225 Difference]: With dead ends: 17471 [2024-10-10 23:40:41,928 INFO L226 Difference]: Without dead ends: 17135 [2024-10-10 23:40:41,932 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:40:41,932 INFO L432 NwaCegarLoop]: 424 mSDtfsCounter, 0 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-10 23:40:41,933 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 429 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-10 23:40:41,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17135 states. [2024-10-10 23:40:42,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17135 to 17135. [2024-10-10 23:40:42,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17135 states, 17134 states have (on average 1.02614684253531) internal successors, (17582), 17134 states have internal predecessors, (17582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:42,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17135 states to 17135 states and 17582 transitions. [2024-10-10 23:40:42,052 INFO L78 Accepts]: Start accepts. Automaton has 17135 states and 17582 transitions. Word has length 1520 [2024-10-10 23:40:42,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:40:42,053 INFO L471 AbstractCegarLoop]: Abstraction has 17135 states and 17582 transitions. [2024-10-10 23:40:42,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:42,053 INFO L276 IsEmpty]: Start isEmpty. Operand 17135 states and 17582 transitions. [2024-10-10 23:40:42,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1631 [2024-10-10 23:40:42,072 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:40:42,073 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-10 23:40:42,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-10 23:40:42,073 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:40:42,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:40:42,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1218057060, now seen corresponding path program 1 times [2024-10-10 23:40:42,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:40:42,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103256745] [2024-10-10 23:40:42,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:40:42,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:40:42,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:40:42,830 INFO L134 CoverageAnalysis]: Checked inductivity of 5055 backedges. 215 proven. 0 refuted. 0 times theorem prover too weak. 4840 trivial. 0 not checked. [2024-10-10 23:40:42,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:40:42,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103256745] [2024-10-10 23:40:42,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103256745] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:40:42,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:40:42,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:40:42,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010756072] [2024-10-10 23:40:42,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:40:42,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:40:42,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:40:42,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:40:42,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:40:42,833 INFO L87 Difference]: Start difference. First operand 17135 states and 17582 transitions. Second operand has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:43,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:40:43,424 INFO L93 Difference]: Finished difference Result 33940 states and 34836 transitions. [2024-10-10 23:40:43,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:40:43,424 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 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 1630 [2024-10-10 23:40:43,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:40:43,437 INFO L225 Difference]: With dead ends: 33940 [2024-10-10 23:40:43,437 INFO L226 Difference]: Without dead ends: 16477 [2024-10-10 23:40:43,447 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:40:43,447 INFO L432 NwaCegarLoop]: 409 mSDtfsCounter, 311 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 748 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-10 23:40:43,448 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 414 Invalid, 787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 748 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-10 23:40:43,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16477 states. [2024-10-10 23:40:43,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16477 to 16477. [2024-10-10 23:40:43,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16477 states, 16476 states have (on average 1.0236707938820102) internal successors, (16866), 16476 states have internal predecessors, (16866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:43,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16477 states to 16477 states and 16866 transitions. [2024-10-10 23:40:43,554 INFO L78 Accepts]: Start accepts. Automaton has 16477 states and 16866 transitions. Word has length 1630 [2024-10-10 23:40:43,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:40:43,555 INFO L471 AbstractCegarLoop]: Abstraction has 16477 states and 16866 transitions. [2024-10-10 23:40:43,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:43,555 INFO L276 IsEmpty]: Start isEmpty. Operand 16477 states and 16866 transitions. [2024-10-10 23:40:43,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1710 [2024-10-10 23:40:43,572 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:40:43,572 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-10 23:40:43,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-10 23:40:43,573 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:40:43,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:40:43,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1089436575, now seen corresponding path program 1 times [2024-10-10 23:40:43,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:40:43,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112455802] [2024-10-10 23:40:43,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:40:43,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:40:43,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:40:45,222 INFO L134 CoverageAnalysis]: Checked inductivity of 5560 backedges. 3801 proven. 0 refuted. 0 times theorem prover too weak. 1759 trivial. 0 not checked. [2024-10-10 23:40:45,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:40:45,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112455802] [2024-10-10 23:40:45,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112455802] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:40:45,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:40:45,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-10 23:40:45,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131551359] [2024-10-10 23:40:45,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:40:45,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 23:40:45,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:40:45,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 23:40:45,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-10 23:40:45,224 INFO L87 Difference]: Start difference. First operand 16477 states and 16866 transitions. Second operand has 4 states, 4 states have (on average 190.75) internal successors, (763), 4 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:45,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:40:45,980 INFO L93 Difference]: Finished difference Result 31977 states and 32749 transitions. [2024-10-10 23:40:45,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-10 23:40:45,981 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 190.75) internal successors, (763), 4 states have internal predecessors, (763), 0 states have call successors, (0), 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 1709 [2024-10-10 23:40:45,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:40:45,994 INFO L225 Difference]: With dead ends: 31977 [2024-10-10 23:40:45,994 INFO L226 Difference]: Without dead ends: 16488 [2024-10-10 23:40:46,003 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-10 23:40:46,004 INFO L432 NwaCegarLoop]: 413 mSDtfsCounter, 218 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 1301 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 1326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-10 23:40:46,004 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 424 Invalid, 1326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1301 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-10 23:40:46,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16488 states. [2024-10-10 23:40:46,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16488 to 16477. [2024-10-10 23:40:46,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16477 states, 16476 states have (on average 1.0233066278222869) internal successors, (16860), 16476 states have internal predecessors, (16860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:46,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16477 states to 16477 states and 16860 transitions. [2024-10-10 23:40:46,121 INFO L78 Accepts]: Start accepts. Automaton has 16477 states and 16860 transitions. Word has length 1709 [2024-10-10 23:40:46,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:40:46,122 INFO L471 AbstractCegarLoop]: Abstraction has 16477 states and 16860 transitions. [2024-10-10 23:40:46,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 190.75) internal successors, (763), 4 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:46,122 INFO L276 IsEmpty]: Start isEmpty. Operand 16477 states and 16860 transitions. [2024-10-10 23:40:46,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1952 [2024-10-10 23:40:46,143 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:40:46,144 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:40:46,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-10 23:40:46,144 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:40:46,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:40:46,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1663734226, now seen corresponding path program 1 times [2024-10-10 23:40:46,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:40:46,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024272543] [2024-10-10 23:40:46,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:40:46,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:40:46,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:40:47,191 INFO L134 CoverageAnalysis]: Checked inductivity of 8116 backedges. 1735 proven. 0 refuted. 0 times theorem prover too weak. 6381 trivial. 0 not checked. [2024-10-10 23:40:47,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:40:47,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024272543] [2024-10-10 23:40:47,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024272543] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:40:47,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:40:47,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:40:47,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600898703] [2024-10-10 23:40:47,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:40:47,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:40:47,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:40:47,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:40:47,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:40:47,193 INFO L87 Difference]: Start difference. First operand 16477 states and 16860 transitions. Second operand has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:47,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:40:47,804 INFO L93 Difference]: Finished difference Result 33611 states and 34414 transitions. [2024-10-10 23:40:47,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:40:47,804 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 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 1951 [2024-10-10 23:40:47,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:40:47,820 INFO L225 Difference]: With dead ends: 33611 [2024-10-10 23:40:47,820 INFO L226 Difference]: Without dead ends: 18122 [2024-10-10 23:40:47,829 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:40:47,829 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 168 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 751 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-10 23:40:47,830 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 27 Invalid, 848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 751 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-10 23:40:47,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18122 states. [2024-10-10 23:40:47,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18122 to 17135. [2024-10-10 23:40:47,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17135 states, 17134 states have (on average 1.0235204855842186) internal successors, (17537), 17134 states have internal predecessors, (17537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:47,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17135 states to 17135 states and 17537 transitions. [2024-10-10 23:40:47,956 INFO L78 Accepts]: Start accepts. Automaton has 17135 states and 17537 transitions. Word has length 1951 [2024-10-10 23:40:47,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:40:47,956 INFO L471 AbstractCegarLoop]: Abstraction has 17135 states and 17537 transitions. [2024-10-10 23:40:47,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:47,957 INFO L276 IsEmpty]: Start isEmpty. Operand 17135 states and 17537 transitions. [2024-10-10 23:40:47,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2018 [2024-10-10 23:40:47,979 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:40:47,980 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-10 23:40:47,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-10 23:40:47,980 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:40:47,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:40:47,981 INFO L85 PathProgramCache]: Analyzing trace with hash 622149363, now seen corresponding path program 1 times [2024-10-10 23:40:47,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:40:47,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29533919] [2024-10-10 23:40:47,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:40:47,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:40:48,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:40:49,825 INFO L134 CoverageAnalysis]: Checked inductivity of 8415 backedges. 4023 proven. 0 refuted. 0 times theorem prover too weak. 4392 trivial. 0 not checked. [2024-10-10 23:40:49,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:40:49,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29533919] [2024-10-10 23:40:49,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29533919] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:40:49,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:40:49,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:40:49,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310756677] [2024-10-10 23:40:49,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:40:49,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 23:40:49,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:40:49,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 23:40:49,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-10 23:40:49,828 INFO L87 Difference]: Start difference. First operand 17135 states and 17537 transitions. Second operand has 4 states, 4 states have (on average 154.75) internal successors, (619), 3 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:50,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:40:50,837 INFO L93 Difference]: Finished difference Result 38546 states and 39443 transitions. [2024-10-10 23:40:50,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 23:40:50,838 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 154.75) internal successors, (619), 3 states have internal predecessors, (619), 0 states have call successors, (0), 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 2017 [2024-10-10 23:40:50,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:40:50,856 INFO L225 Difference]: With dead ends: 38546 [2024-10-10 23:40:50,856 INFO L226 Difference]: Without dead ends: 22399 [2024-10-10 23:40:50,867 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-10 23:40:50,867 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 304 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 1499 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 1568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-10 23:40:50,868 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 65 Invalid, 1568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1499 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-10 23:40:50,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22399 states. [2024-10-10 23:40:50,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22399 to 19438. [2024-10-10 23:40:51,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19438 states, 19437 states have (on average 1.0224314451818697) internal successors, (19873), 19437 states have internal predecessors, (19873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:51,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19438 states to 19438 states and 19873 transitions. [2024-10-10 23:40:51,024 INFO L78 Accepts]: Start accepts. Automaton has 19438 states and 19873 transitions. Word has length 2017 [2024-10-10 23:40:51,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:40:51,024 INFO L471 AbstractCegarLoop]: Abstraction has 19438 states and 19873 transitions. [2024-10-10 23:40:51,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 154.75) internal successors, (619), 3 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:51,024 INFO L276 IsEmpty]: Start isEmpty. Operand 19438 states and 19873 transitions. [2024-10-10 23:40:51,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2020 [2024-10-10 23:40:51,047 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:40:51,047 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2024-10-10 23:40:51,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-10-10 23:40:51,048 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:40:51,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:40:51,048 INFO L85 PathProgramCache]: Analyzing trace with hash 547250414, now seen corresponding path program 1 times [2024-10-10 23:40:51,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:40:51,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019369285] [2024-10-10 23:40:51,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:40:51,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:40:51,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:40:53,618 INFO L134 CoverageAnalysis]: Checked inductivity of 8421 backedges. 5330 proven. 79 refuted. 0 times theorem prover too weak. 3012 trivial. 0 not checked. [2024-10-10 23:40:53,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:40:53,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019369285] [2024-10-10 23:40:53,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019369285] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 23:40:53,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875661782] [2024-10-10 23:40:53,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:40:53,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:40:53,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:40:53,620 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 23:40:53,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-10 23:40:54,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:40:54,065 INFO L255 TraceCheckSpWp]: Trace formula consists of 2322 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-10 23:40:54,082 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 23:40:54,511 INFO L134 CoverageAnalysis]: Checked inductivity of 8421 backedges. 5135 proven. 0 refuted. 0 times theorem prover too weak. 3286 trivial. 0 not checked. [2024-10-10 23:40:54,512 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 23:40:54,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875661782] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:40:54,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 23:40:54,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-10-10 23:40:54,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042254708] [2024-10-10 23:40:54,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:40:54,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:40:54,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:40:54,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:40:54,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-10 23:40:54,514 INFO L87 Difference]: Start difference. First operand 19438 states and 19873 transitions. Second operand has 3 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:55,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:40:55,123 INFO L93 Difference]: Finished difference Result 37888 states and 38752 transitions. [2024-10-10 23:40:55,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:40:55,123 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 0 states have call successors, (0), 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 2019 [2024-10-10 23:40:55,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:40:55,139 INFO L225 Difference]: With dead ends: 37888 [2024-10-10 23:40:55,139 INFO L226 Difference]: Without dead ends: 19438 [2024-10-10 23:40:55,150 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2022 GetRequests, 2019 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-10 23:40:55,150 INFO L432 NwaCegarLoop]: 409 mSDtfsCounter, 122 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-10 23:40:55,150 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 413 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 736 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-10 23:40:55,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19438 states. [2024-10-10 23:40:55,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19438 to 19438. [2024-10-10 23:40:55,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19438 states, 19437 states have (on average 1.0221227555692751) internal successors, (19867), 19437 states have internal predecessors, (19867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:55,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19438 states to 19438 states and 19867 transitions. [2024-10-10 23:40:55,304 INFO L78 Accepts]: Start accepts. Automaton has 19438 states and 19867 transitions. Word has length 2019 [2024-10-10 23:40:55,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:40:55,304 INFO L471 AbstractCegarLoop]: Abstraction has 19438 states and 19867 transitions. [2024-10-10 23:40:55,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:55,305 INFO L276 IsEmpty]: Start isEmpty. Operand 19438 states and 19867 transitions. [2024-10-10 23:40:55,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2041 [2024-10-10 23:40:55,329 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:40:55,330 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-10 23:40:55,345 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-10 23:40:55,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:40:55,536 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:40:55,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:40:55,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1672387340, now seen corresponding path program 1 times [2024-10-10 23:40:55,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:40:55,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908733644] [2024-10-10 23:40:55,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:40:55,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:40:55,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:40:57,178 INFO L134 CoverageAnalysis]: Checked inductivity of 8147 backedges. 3944 proven. 0 refuted. 0 times theorem prover too weak. 4203 trivial. 0 not checked. [2024-10-10 23:40:57,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:40:57,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908733644] [2024-10-10 23:40:57,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908733644] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:40:57,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:40:57,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:40:57,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887920838] [2024-10-10 23:40:57,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:40:57,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:40:57,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:40:57,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:40:57,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:40:57,181 INFO L87 Difference]: Start difference. First operand 19438 states and 19867 transitions. Second operand has 3 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:57,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:40:57,812 INFO L93 Difference]: Finished difference Result 40191 states and 41082 transitions. [2024-10-10 23:40:57,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:40:57,812 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 0 states have call successors, (0), 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 2040 [2024-10-10 23:40:57,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:40:57,831 INFO L225 Difference]: With dead ends: 40191 [2024-10-10 23:40:57,831 INFO L226 Difference]: Without dead ends: 21741 [2024-10-10 23:40:57,842 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:40:57,842 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 208 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-10 23:40:57,842 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 42 Invalid, 831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-10 23:40:57,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21741 states. [2024-10-10 23:40:57,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21741 to 19438. [2024-10-10 23:40:57,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19438 states, 19437 states have (on average 1.0215568246128517) internal successors, (19856), 19437 states have internal predecessors, (19856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:57,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19438 states to 19438 states and 19856 transitions. [2024-10-10 23:40:57,999 INFO L78 Accepts]: Start accepts. Automaton has 19438 states and 19856 transitions. Word has length 2040 [2024-10-10 23:40:58,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:40:58,000 INFO L471 AbstractCegarLoop]: Abstraction has 19438 states and 19856 transitions. [2024-10-10 23:40:58,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:40:58,000 INFO L276 IsEmpty]: Start isEmpty. Operand 19438 states and 19856 transitions. [2024-10-10 23:40:58,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2082 [2024-10-10 23:40:58,024 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:40:58,025 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:40:58,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-10-10 23:40:58,025 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:40:58,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:40:58,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1190299403, now seen corresponding path program 1 times [2024-10-10 23:40:58,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:40:58,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646427377] [2024-10-10 23:40:58,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:40:58,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:40:58,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:40:59,961 INFO L134 CoverageAnalysis]: Checked inductivity of 8876 backedges. 6599 proven. 78 refuted. 0 times theorem prover too weak. 2199 trivial. 0 not checked. [2024-10-10 23:40:59,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:40:59,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646427377] [2024-10-10 23:40:59,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646427377] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 23:40:59,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175874371] [2024-10-10 23:40:59,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:40:59,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:40:59,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:40:59,963 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 23:40:59,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-10 23:41:00,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:41:00,363 INFO L255 TraceCheckSpWp]: Trace formula consists of 2398 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-10 23:41:00,376 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 23:41:05,306 INFO L134 CoverageAnalysis]: Checked inductivity of 8876 backedges. 5695 proven. 67 refuted. 0 times theorem prover too weak. 3114 trivial. 0 not checked. [2024-10-10 23:41:05,306 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 23:41:08,051 INFO L134 CoverageAnalysis]: Checked inductivity of 8876 backedges. 4687 proven. 0 refuted. 0 times theorem prover too weak. 4189 trivial. 0 not checked. [2024-10-10 23:41:08,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175874371] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-10 23:41:08,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-10 23:41:08,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 4] total 9 [2024-10-10 23:41:08,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103817493] [2024-10-10 23:41:08,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:41:08,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:41:08,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:41:08,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:41:08,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-10-10 23:41:08,054 INFO L87 Difference]: Start difference. First operand 19438 states and 19856 transitions. Second operand has 3 states, 3 states have (on average 199.33333333333334) internal successors, (598), 3 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:41:08,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:41:08,693 INFO L93 Difference]: Finished difference Result 38875 states and 39714 transitions. [2024-10-10 23:41:08,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:41:08,694 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 199.33333333333334) internal successors, (598), 3 states have internal predecessors, (598), 0 states have call successors, (0), 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 2081 [2024-10-10 23:41:08,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:41:08,712 INFO L225 Difference]: With dead ends: 38875 [2024-10-10 23:41:08,712 INFO L226 Difference]: Without dead ends: 20425 [2024-10-10 23:41:08,723 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4166 GetRequests, 4159 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-10-10 23:41:08,723 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 268 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-10 23:41:08,723 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 30 Invalid, 812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 733 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-10 23:41:08,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20425 states. [2024-10-10 23:41:08,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20425 to 18780. [2024-10-10 23:41:08,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18780 states, 18779 states have (on average 1.0183183343096012) internal successors, (19123), 18779 states have internal predecessors, (19123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:41:08,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18780 states to 18780 states and 19123 transitions. [2024-10-10 23:41:08,880 INFO L78 Accepts]: Start accepts. Automaton has 18780 states and 19123 transitions. Word has length 2081 [2024-10-10 23:41:08,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:41:08,880 INFO L471 AbstractCegarLoop]: Abstraction has 18780 states and 19123 transitions. [2024-10-10 23:41:08,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 199.33333333333334) internal successors, (598), 3 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:41:08,881 INFO L276 IsEmpty]: Start isEmpty. Operand 18780 states and 19123 transitions. [2024-10-10 23:41:08,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2132 [2024-10-10 23:41:08,905 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:41:08,905 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:41:08,920 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-10 23:41:09,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-10-10 23:41:09,106 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:41:09,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:41:09,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1563195893, now seen corresponding path program 1 times [2024-10-10 23:41:09,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:41:09,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607575747] [2024-10-10 23:41:09,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:41:09,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:41:09,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:41:11,557 INFO L134 CoverageAnalysis]: Checked inductivity of 9268 backedges. 6999 proven. 220 refuted. 0 times theorem prover too weak. 2049 trivial. 0 not checked. [2024-10-10 23:41:11,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:41:11,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607575747] [2024-10-10 23:41:11,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607575747] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 23:41:11,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254658775] [2024-10-10 23:41:11,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:41:11,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:41:11,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:41:11,560 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 23:41:11,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process