./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/Problem03_label25.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label25.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6036572cc480aba1617ffcf5de0f96e18071f7d06d6847cfbda5ebab0921c496 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-23 20:21:13,396 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-23 20:21:13,436 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-23 20:21:13,440 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-23 20:21:13,440 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-23 20:21:13,456 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-23 20:21:13,456 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-23 20:21:13,457 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-23 20:21:13,457 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-23 20:21:13,457 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-23 20:21:13,458 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-23 20:21:13,458 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-23 20:21:13,458 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-23 20:21:13,459 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-23 20:21:13,459 INFO L153 SettingsManager]: * Use SBE=true [2024-10-23 20:21:13,459 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-23 20:21:13,460 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-23 20:21:13,460 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-23 20:21:13,460 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-23 20:21:13,460 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-23 20:21:13,461 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-23 20:21:13,468 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-23 20:21:13,469 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-23 20:21:13,469 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-23 20:21:13,469 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-23 20:21:13,469 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-23 20:21:13,469 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-23 20:21:13,470 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-23 20:21:13,470 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-23 20:21:13,470 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-23 20:21:13,470 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-23 20:21:13,470 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-23 20:21:13,470 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 20:21:13,471 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-23 20:21:13,471 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-23 20:21:13,471 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-23 20:21:13,471 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-23 20:21:13,471 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-23 20:21:13,471 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-23 20:21:13,472 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-23 20:21:13,472 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-23 20:21:13,472 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-23 20:21:13,472 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6036572cc480aba1617ffcf5de0f96e18071f7d06d6847cfbda5ebab0921c496 [2024-10-23 20:21:13,660 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-23 20:21:13,683 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-23 20:21:13,686 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-23 20:21:13,687 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-23 20:21:13,688 INFO L274 PluginConnector]: CDTParser initialized [2024-10-23 20:21:13,689 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label25.c [2024-10-23 20:21:14,978 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-23 20:21:15,257 INFO L384 CDTParser]: Found 1 translation units. [2024-10-23 20:21:15,258 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label25.c [2024-10-23 20:21:15,281 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe3906e3c/1ce9e6171f0844fabf56a0325eeedf09/FLAGc3656c521 [2024-10-23 20:21:15,301 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe3906e3c/1ce9e6171f0844fabf56a0325eeedf09 [2024-10-23 20:21:15,304 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-23 20:21:15,305 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-23 20:21:15,309 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-23 20:21:15,309 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-23 20:21:15,313 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-23 20:21:15,314 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:21:15" (1/1) ... [2024-10-23 20:21:15,315 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b237365 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:15, skipping insertion in model container [2024-10-23 20:21:15,315 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:21:15" (1/1) ... [2024-10-23 20:21:15,436 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-23 20:21:15,855 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/Problem03_label25.c[58529,58542] [2024-10-23 20:21:15,885 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 20:21:15,894 INFO L200 MainTranslator]: Completed pre-run [2024-10-23 20:21:16,023 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/Problem03_label25.c[58529,58542] [2024-10-23 20:21:16,041 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 20:21:16,057 INFO L204 MainTranslator]: Completed translation [2024-10-23 20:21:16,058 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:16 WrapperNode [2024-10-23 20:21:16,058 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-23 20:21:16,058 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-23 20:21:16,059 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-23 20:21:16,059 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-23 20:21:16,064 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:16" (1/1) ... [2024-10-23 20:21:16,091 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:16" (1/1) ... [2024-10-23 20:21:16,200 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1772 [2024-10-23 20:21:16,200 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-23 20:21:16,201 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-23 20:21:16,201 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-23 20:21:16,201 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-23 20:21:16,214 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:16" (1/1) ... [2024-10-23 20:21:16,214 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:16" (1/1) ... [2024-10-23 20:21:16,225 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:16" (1/1) ... [2024-10-23 20:21:16,260 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]. [2024-10-23 20:21:16,261 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:16" (1/1) ... [2024-10-23 20:21:16,261 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:16" (1/1) ... [2024-10-23 20:21:16,296 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:16" (1/1) ... [2024-10-23 20:21:16,311 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:16" (1/1) ... [2024-10-23 20:21:16,323 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:16" (1/1) ... [2024-10-23 20:21:16,332 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:16" (1/1) ... [2024-10-23 20:21:16,349 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-23 20:21:16,354 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-23 20:21:16,354 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-23 20:21:16,354 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-23 20:21:16,355 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:16" (1/1) ... [2024-10-23 20:21:16,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 20:21:16,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 20:21:16,399 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-23 20:21:16,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-23 20:21:16,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-23 20:21:16,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-23 20:21:16,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-23 20:21:16,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-23 20:21:16,536 INFO L238 CfgBuilder]: Building ICFG [2024-10-23 20:21:16,538 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-23 20:21:17,809 INFO L? ?]: Removed 147 outVars from TransFormulas that were not future-live. [2024-10-23 20:21:17,810 INFO L287 CfgBuilder]: Performing block encoding [2024-10-23 20:21:17,859 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-23 20:21:17,863 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-23 20:21:17,863 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:21:17 BoogieIcfgContainer [2024-10-23 20:21:17,863 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-23 20:21:17,865 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-23 20:21:17,869 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-23 20:21:17,872 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-23 20:21:17,872 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:21:15" (1/3) ... [2024-10-23 20:21:17,872 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d51a4f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:21:17, skipping insertion in model container [2024-10-23 20:21:17,872 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:16" (2/3) ... [2024-10-23 20:21:17,873 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d51a4f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:21:17, skipping insertion in model container [2024-10-23 20:21:17,873 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:21:17" (3/3) ... [2024-10-23 20:21:17,874 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label25.c [2024-10-23 20:21:17,896 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-23 20:21:17,900 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-23 20:21:17,972 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-23 20:21:17,979 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;@7ccb1673, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-23 20:21:17,979 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-23 20:21:17,984 INFO L276 IsEmpty]: Start isEmpty. Operand has 240 states, 238 states have (on average 1.9201680672268908) internal successors, (457), 239 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:21:17,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-10-23 20:21:17,996 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:21:17,997 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:21:17,998 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:21:18,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:21:18,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1338073287, now seen corresponding path program 1 times [2024-10-23 20:21:18,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:21:18,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249464439] [2024-10-23 20:21:18,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:21:18,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:21:18,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:21:18,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 20:21:18,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:21:18,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249464439] [2024-10-23 20:21:18,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249464439] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:21:18,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:21:18,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 20:21:18,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201275391] [2024-10-23 20:21:18,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:21:18,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-23 20:21:18,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:21:18,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-23 20:21:18,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 20:21:18,555 INFO L87 Difference]: Start difference. First operand has 240 states, 238 states have (on average 1.9201680672268908) internal successors, (457), 239 states have internal predecessors, (457), 0 states have call successors, (0), 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 89.5) internal successors, (179), 2 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:21:18,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:21:18,598 INFO L93 Difference]: Finished difference Result 479 states and 913 transitions. [2024-10-23 20:21:18,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-23 20:21:18,600 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 89.5) internal successors, (179), 2 states have internal predecessors, (179), 0 states have call successors, (0), 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 179 [2024-10-23 20:21:18,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:21:18,609 INFO L225 Difference]: With dead ends: 479 [2024-10-23 20:21:18,609 INFO L226 Difference]: Without dead ends: 238 [2024-10-23 20:21:18,612 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 [2024-10-23 20:21:18,615 INFO L432 NwaCegarLoop]: 392 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, 392 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 [2024-10-23 20:21:18,616 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 392 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-23 20:21:18,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2024-10-23 20:21:18,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2024-10-23 20:21:18,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 1.6540084388185654) internal successors, (392), 237 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:21:18,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 392 transitions. [2024-10-23 20:21:18,655 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 392 transitions. Word has length 179 [2024-10-23 20:21:18,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:21:18,656 INFO L471 AbstractCegarLoop]: Abstraction has 238 states and 392 transitions. [2024-10-23 20:21:18,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 89.5) internal successors, (179), 2 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:21:18,656 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 392 transitions. [2024-10-23 20:21:18,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-10-23 20:21:18,658 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:21:18,658 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:21:18,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-23 20:21:18,659 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:21:18,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:21:18,659 INFO L85 PathProgramCache]: Analyzing trace with hash -693337360, now seen corresponding path program 1 times [2024-10-23 20:21:18,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:21:18,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778461361] [2024-10-23 20:21:18,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:21:18,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:21:18,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:21:19,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 20:21:19,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:21:19,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778461361] [2024-10-23 20:21:19,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778461361] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:21:19,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:21:19,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 20:21:19,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943865732] [2024-10-23 20:21:19,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:21:19,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:21:19,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:21:19,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:21:19,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:21:19,291 INFO L87 Difference]: Start difference. First operand 238 states and 392 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 2 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:21:20,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:21:20,028 INFO L93 Difference]: Finished difference Result 693 states and 1149 transitions. [2024-10-23 20:21:20,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:21:20,028 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 2 states have internal predecessors, (179), 0 states have call successors, (0), 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 179 [2024-10-23 20:21:20,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:21:20,031 INFO L225 Difference]: With dead ends: 693 [2024-10-23 20:21:20,031 INFO L226 Difference]: Without dead ends: 456 [2024-10-23 20:21:20,032 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 [2024-10-23 20:21:20,033 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 71 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-23 20:21:20,033 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 111 Invalid, 741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-23 20:21:20,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2024-10-23 20:21:20,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 450. [2024-10-23 20:21:20,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 449 states have (on average 1.599109131403118) internal successors, (718), 449 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:21:20,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 718 transitions. [2024-10-23 20:21:20,071 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 718 transitions. Word has length 179 [2024-10-23 20:21:20,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:21:20,072 INFO L471 AbstractCegarLoop]: Abstraction has 450 states and 718 transitions. [2024-10-23 20:21:20,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 2 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:21:20,073 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 718 transitions. [2024-10-23 20:21:20,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2024-10-23 20:21:20,078 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:21:20,080 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-23 20:21:20,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-23 20:21:20,081 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:21:20,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:21:20,081 INFO L85 PathProgramCache]: Analyzing trace with hash 2052825084, now seen corresponding path program 1 times [2024-10-23 20:21:20,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:21:20,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336047000] [2024-10-23 20:21:20,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:21:20,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:21:20,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:21:20,312 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 20:21:20,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:21:20,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336047000] [2024-10-23 20:21:20,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336047000] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:21:20,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:21:20,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 20:21:20,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845665600] [2024-10-23 20:21:20,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:21:20,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:21:20,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:21:20,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:21:20,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:21:20,317 INFO L87 Difference]: Start difference. First operand 450 states and 718 transitions. Second operand has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 2 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:21:20,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:21:20,942 INFO L93 Difference]: Finished difference Result 1339 states and 2141 transitions. [2024-10-23 20:21:20,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:21:20,943 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 2 states have internal predecessors, (185), 0 states have call successors, (0), 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 185 [2024-10-23 20:21:20,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:21:20,946 INFO L225 Difference]: With dead ends: 1339 [2024-10-23 20:21:20,946 INFO L226 Difference]: Without dead ends: 890 [2024-10-23 20:21:20,947 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 [2024-10-23 20:21:20,948 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 285 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-23 20:21:20,949 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 139 Invalid, 722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 698 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-23 20:21:20,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2024-10-23 20:21:20,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 885. [2024-10-23 20:21:20,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 884 states have (on average 1.579185520361991) internal successors, (1396), 884 states have internal predecessors, (1396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:21:20,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1396 transitions. [2024-10-23 20:21:20,975 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1396 transitions. Word has length 185 [2024-10-23 20:21:20,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:21:20,975 INFO L471 AbstractCegarLoop]: Abstraction has 885 states and 1396 transitions. [2024-10-23 20:21:20,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 2 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:21:20,976 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1396 transitions. [2024-10-23 20:21:20,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2024-10-23 20:21:20,982 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:21:20,982 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:21:20,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-23 20:21:20,983 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:21:20,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:21:20,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1810003382, now seen corresponding path program 1 times [2024-10-23 20:21:20,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:21:20,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078120779] [2024-10-23 20:21:20,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:21:20,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:21:21,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:21:21,436 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 20:21:21,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:21:21,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078120779] [2024-10-23 20:21:21,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078120779] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:21:21,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:21:21,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 20:21:21,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991194360] [2024-10-23 20:21:21,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:21:21,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:21:21,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:21:21,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:21:21,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:21:21,441 INFO L87 Difference]: Start difference. First operand 885 states and 1396 transitions. Second operand has 3 states, 3 states have (on average 63.0) internal successors, (189), 2 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:21:22,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:21:22,241 INFO L93 Difference]: Finished difference Result 2604 states and 4114 transitions. [2024-10-23 20:21:22,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:21:22,242 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 2 states have internal predecessors, (189), 0 states have call successors, (0), 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 189 [2024-10-23 20:21:22,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:21:22,246 INFO L225 Difference]: With dead ends: 2604 [2024-10-23 20:21:22,247 INFO L226 Difference]: Without dead ends: 1720 [2024-10-23 20:21:22,248 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 [2024-10-23 20:21:22,248 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 232 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-23 20:21:22,249 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 124 Invalid, 762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-23 20:21:22,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1720 states. [2024-10-23 20:21:22,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1720 to 1718. [2024-10-23 20:21:22,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1718 states, 1717 states have (on average 1.500873616773442) internal successors, (2577), 1717 states have internal predecessors, (2577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:21:22,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1718 states to 1718 states and 2577 transitions. [2024-10-23 20:21:22,272 INFO L78 Accepts]: Start accepts. Automaton has 1718 states and 2577 transitions. Word has length 189 [2024-10-23 20:21:22,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:21:22,273 INFO L471 AbstractCegarLoop]: Abstraction has 1718 states and 2577 transitions. [2024-10-23 20:21:22,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 2 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:21:22,273 INFO L276 IsEmpty]: Start isEmpty. Operand 1718 states and 2577 transitions. [2024-10-23 20:21:22,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-10-23 20:21:22,276 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:21:22,276 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 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] [2024-10-23 20:21:22,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-23 20:21:22,276 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:21:22,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:21:22,277 INFO L85 PathProgramCache]: Analyzing trace with hash 843492843, now seen corresponding path program 1 times [2024-10-23 20:21:22,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:21:22,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494788612] [2024-10-23 20:21:22,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:21:22,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:21:22,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:21:22,388 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 20:21:22,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:21:22,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494788612] [2024-10-23 20:21:22,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494788612] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:21:22,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:21:22,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 20:21:22,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003345446] [2024-10-23 20:21:22,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:21:22,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:21:22,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:21:22,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:21:22,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:21:22,390 INFO L87 Difference]: Start difference. First operand 1718 states and 2577 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:21:23,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:21:23,049 INFO L93 Difference]: Finished difference Result 5079 states and 7622 transitions. [2024-10-23 20:21:23,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:21:23,049 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 192 [2024-10-23 20:21:23,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:21:23,058 INFO L225 Difference]: With dead ends: 5079 [2024-10-23 20:21:23,058 INFO L226 Difference]: Without dead ends: 3362 [2024-10-23 20:21:23,059 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 [2024-10-23 20:21:23,060 INFO L432 NwaCegarLoop]: 148 mSDtfsCounter, 253 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-23 20:21:23,060 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 177 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 630 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-23 20:21:23,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3362 states. [2024-10-23 20:21:23,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3362 to 3360. [2024-10-23 20:21:23,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3360 states, 3359 states have (on average 1.432271509377791) internal successors, (4811), 3359 states have internal predecessors, (4811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:21:23,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3360 states to 3360 states and 4811 transitions. [2024-10-23 20:21:23,116 INFO L78 Accepts]: Start accepts. Automaton has 3360 states and 4811 transitions. Word has length 192 [2024-10-23 20:21:23,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:21:23,117 INFO L471 AbstractCegarLoop]: Abstraction has 3360 states and 4811 transitions. [2024-10-23 20:21:23,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:21:23,117 INFO L276 IsEmpty]: Start isEmpty. Operand 3360 states and 4811 transitions. [2024-10-23 20:21:23,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-10-23 20:21:23,122 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:21:23,123 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:21:23,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-23 20:21:23,123 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:21:23,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:21:23,124 INFO L85 PathProgramCache]: Analyzing trace with hash 163064000, now seen corresponding path program 1 times [2024-10-23 20:21:23,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:21:23,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093135517] [2024-10-23 20:21:23,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:21:23,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:21:23,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:21:23,310 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 20:21:23,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:21:23,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093135517] [2024-10-23 20:21:23,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093135517] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:21:23,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:21:23,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 20:21:23,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710884631] [2024-10-23 20:21:23,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:21:23,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:21:23,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:21:23,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:21:23,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:21:23,312 INFO L87 Difference]: Start difference. First operand 3360 states and 4811 transitions. Second operand has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 2 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:21:23,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:21:23,921 INFO L93 Difference]: Finished difference Result 9994 states and 14318 transitions. [2024-10-23 20:21:23,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:21:23,922 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 2 states have internal predecessors, (193), 0 states have call successors, (0), 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 193 [2024-10-23 20:21:23,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:21:23,939 INFO L225 Difference]: With dead ends: 9994 [2024-10-23 20:21:23,939 INFO L226 Difference]: Without dead ends: 6635 [2024-10-23 20:21:23,945 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 [2024-10-23 20:21:23,947 INFO L432 NwaCegarLoop]: 136 mSDtfsCounter, 242 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-23 20:21:23,948 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 171 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-23 20:21:23,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6635 states. [2024-10-23 20:21:24,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6635 to 6629. [2024-10-23 20:21:24,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6629 states, 6628 states have (on average 1.368436934218467) internal successors, (9070), 6628 states have internal predecessors, (9070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:21:24,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6629 states to 6629 states and 9070 transitions. [2024-10-23 20:21:24,065 INFO L78 Accepts]: Start accepts. Automaton has 6629 states and 9070 transitions. Word has length 193 [2024-10-23 20:21:24,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:21:24,065 INFO L471 AbstractCegarLoop]: Abstraction has 6629 states and 9070 transitions. [2024-10-23 20:21:24,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 2 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:21:24,067 INFO L276 IsEmpty]: Start isEmpty. Operand 6629 states and 9070 transitions. [2024-10-23 20:21:24,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-10-23 20:21:24,074 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:21:24,074 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-23 20:21:24,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-23 20:21:24,075 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:21:24,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:21:24,075 INFO L85 PathProgramCache]: Analyzing trace with hash -312671647, now seen corresponding path program 1 times [2024-10-23 20:21:24,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:21:24,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972759174] [2024-10-23 20:21:24,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:21:24,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:21:24,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:21:24,426 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 20:21:24,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:21:24,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972759174] [2024-10-23 20:21:24,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972759174] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:21:24,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:21:24,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 20:21:24,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723994021] [2024-10-23 20:21:24,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:21:24,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:21:24,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:21:24,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:21:24,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:21:24,429 INFO L87 Difference]: Start difference. First operand 6629 states and 9070 transitions. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 2 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:21:25,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:21:25,075 INFO L93 Difference]: Finished difference Result 17746 states and 24320 transitions. [2024-10-23 20:21:25,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:21:25,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 2 states have internal predecessors, (198), 0 states have call successors, (0), 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 198 [2024-10-23 20:21:25,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:21:25,106 INFO L225 Difference]: With dead ends: 17746 [2024-10-23 20:21:25,107 INFO L226 Difference]: Without dead ends: 11118 [2024-10-23 20:21:25,115 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 [2024-10-23 20:21:25,117 INFO L432 NwaCegarLoop]: 148 mSDtfsCounter, 208 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-23 20:21:25,117 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 169 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-23 20:21:25,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11118 states. [2024-10-23 20:21:25,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11118 to 11095. [2024-10-23 20:21:25,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11095 states, 11094 states have (on average 1.3208941770326303) internal successors, (14654), 11094 states have internal predecessors, (14654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:21:25,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11095 states to 11095 states and 14654 transitions. [2024-10-23 20:21:25,258 INFO L78 Accepts]: Start accepts. Automaton has 11095 states and 14654 transitions. Word has length 198 [2024-10-23 20:21:25,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:21:25,258 INFO L471 AbstractCegarLoop]: Abstraction has 11095 states and 14654 transitions. [2024-10-23 20:21:25,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 2 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:21:25,258 INFO L276 IsEmpty]: Start isEmpty. Operand 11095 states and 14654 transitions. [2024-10-23 20:21:25,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-10-23 20:21:25,269 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:21:25,270 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 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] [2024-10-23 20:21:25,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-23 20:21:25,270 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:21:25,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:21:25,271 INFO L85 PathProgramCache]: Analyzing trace with hash -234912202, now seen corresponding path program 1 times [2024-10-23 20:21:25,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:21:25,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330211850] [2024-10-23 20:21:25,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:21:25,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:21:25,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:21:25,491 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 30 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 20:21:25,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:21:25,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330211850] [2024-10-23 20:21:25,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330211850] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 20:21:25,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074075044] [2024-10-23 20:21:25,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:21:25,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:21:25,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 20:21:25,495 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 20:21:25,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-23 20:21:25,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:21:25,615 INFO L255 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 20:21:25,623 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 20:21:25,652 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-23 20:21:25,656 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 20:21:25,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074075044] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:21:25,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 20:21:25,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-10-23 20:21:25,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143304584] [2024-10-23 20:21:25,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:21:25,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:21:25,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:21:25,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:21:25,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-23 20:21:25,658 INFO L87 Difference]: Start difference. First operand 11095 states and 14654 transitions. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:21:26,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:21:26,596 INFO L93 Difference]: Finished difference Result 29905 states and 39730 transitions. [2024-10-23 20:21:26,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:21:26,598 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 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 203 [2024-10-23 20:21:26,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:21:26,675 INFO L225 Difference]: With dead ends: 29905 [2024-10-23 20:21:26,678 INFO L226 Difference]: Without dead ends: 19014 [2024-10-23 20:21:26,701 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-23 20:21:26,702 INFO L432 NwaCegarLoop]: 383 mSDtfsCounter, 230 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-23 20:21:26,702 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 410 Invalid, 705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-23 20:21:26,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19014 states. [2024-10-23 20:21:27,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19014 to 19010. [2024-10-23 20:21:27,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19010 states, 19009 states have (on average 1.202798674312168) internal successors, (22864), 19009 states have internal predecessors, (22864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:21:27,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19010 states to 19010 states and 22864 transitions. [2024-10-23 20:21:27,182 INFO L78 Accepts]: Start accepts. Automaton has 19010 states and 22864 transitions. Word has length 203 [2024-10-23 20:21:27,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:21:27,183 INFO L471 AbstractCegarLoop]: Abstraction has 19010 states and 22864 transitions. [2024-10-23 20:21:27,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:21:27,184 INFO L276 IsEmpty]: Start isEmpty. Operand 19010 states and 22864 transitions. [2024-10-23 20:21:27,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-10-23 20:21:27,205 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:21:27,205 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:21:27,222 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-23 20:21:27,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:21:27,407 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:21:27,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:21:27,407 INFO L85 PathProgramCache]: Analyzing trace with hash -862039854, now seen corresponding path program 1 times [2024-10-23 20:21:27,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:21:27,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225534975] [2024-10-23 20:21:27,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:21:27,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:21:27,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:21:27,864 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 25 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 20:21:27,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:21:27,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225534975] [2024-10-23 20:21:27,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225534975] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 20:21:27,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650099777] [2024-10-23 20:21:27,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:21:27,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:21:27,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 20:21:27,870 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 20:21:27,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-23 20:21:28,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:21:28,075 INFO L255 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 20:21:28,078 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 20:21:28,133 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-23 20:21:28,134 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 20:21:28,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650099777] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:21:28,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 20:21:28,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-10-23 20:21:28,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427687686] [2024-10-23 20:21:28,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:21:28,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:21:28,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:21:28,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:21:28,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-23 20:21:28,135 INFO L87 Difference]: Start difference. First operand 19010 states and 22864 transitions. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:21:28,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:21:28,817 INFO L93 Difference]: Finished difference Result 42893 states and 52534 transitions. [2024-10-23 20:21:28,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:21:28,818 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 0 states have call successors, (0), 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 205 [2024-10-23 20:21:28,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:21:28,848 INFO L225 Difference]: With dead ends: 42893 [2024-10-23 20:21:28,848 INFO L226 Difference]: Without dead ends: 24087 [2024-10-23 20:21:28,864 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-23 20:21:28,865 INFO L432 NwaCegarLoop]: 143 mSDtfsCounter, 223 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-23 20:21:28,866 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 168 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-23 20:21:28,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24087 states. [2024-10-23 20:21:29,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24087 to 24083. [2024-10-23 20:21:29,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24083 states, 24082 states have (on average 1.1824599285773607) internal successors, (28476), 24082 states have internal predecessors, (28476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:21:29,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24083 states to 24083 states and 28476 transitions. [2024-10-23 20:21:29,189 INFO L78 Accepts]: Start accepts. Automaton has 24083 states and 28476 transitions. Word has length 205 [2024-10-23 20:21:29,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:21:29,189 INFO L471 AbstractCegarLoop]: Abstraction has 24083 states and 28476 transitions. [2024-10-23 20:21:29,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:21:29,190 INFO L276 IsEmpty]: Start isEmpty. Operand 24083 states and 28476 transitions. [2024-10-23 20:21:29,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2024-10-23 20:21:29,205 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:21:29,205 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:21:29,220 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-23 20:21:29,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-10-23 20:21:29,408 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:21:29,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:21:29,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1981937413, now seen corresponding path program 1 times [2024-10-23 20:21:29,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:21:29,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962897207] [2024-10-23 20:21:29,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:21:29,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:21:29,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:21:29,881 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 34 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 20:21:29,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:21:29,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962897207] [2024-10-23 20:21:29,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962897207] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 20:21:29,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450405170] [2024-10-23 20:21:29,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:21:29,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:21:29,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 20:21:29,884 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 20:21:29,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-23 20:21:30,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:21:30,048 INFO L255 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 20:21:30,052 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 20:21:30,272 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-23 20:21:30,272 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 20:21:30,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450405170] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:21:30,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 20:21:30,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-10-23 20:21:30,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386631935] [2024-10-23 20:21:30,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:21:30,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:21:30,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:21:30,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:21:30,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-23 20:21:30,274 INFO L87 Difference]: Start difference. First operand 24083 states and 28476 transitions. Second operand has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 2 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:21:31,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:21:31,052 INFO L93 Difference]: Finished difference Result 58777 states and 70028 transitions. [2024-10-23 20:21:31,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:21:31,053 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 2 states have internal predecessors, (182), 0 states have call successors, (0), 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 214 [2024-10-23 20:21:31,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:21:31,105 INFO L225 Difference]: With dead ends: 58777 [2024-10-23 20:21:31,105 INFO L226 Difference]: Without dead ends: 35101 [2024-10-23 20:21:31,132 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-23 20:21:31,133 INFO L432 NwaCegarLoop]: 147 mSDtfsCounter, 89 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-23 20:21:31,133 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 179 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-23 20:21:31,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35101 states. [2024-10-23 20:21:31,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35101 to 35085. [2024-10-23 20:21:31,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35085 states, 35084 states have (on average 1.1760916657165659) internal successors, (41262), 35084 states have internal predecessors, (41262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:21:31,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35085 states to 35085 states and 41262 transitions. [2024-10-23 20:21:31,662 INFO L78 Accepts]: Start accepts. Automaton has 35085 states and 41262 transitions. Word has length 214 [2024-10-23 20:21:31,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:21:31,663 INFO L471 AbstractCegarLoop]: Abstraction has 35085 states and 41262 transitions. [2024-10-23 20:21:31,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 2 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:21:31,663 INFO L276 IsEmpty]: Start isEmpty. Operand 35085 states and 41262 transitions. [2024-10-23 20:21:31,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2024-10-23 20:21:31,687 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:21:31,687 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:21:31,704 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-23 20:21:31,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:21:31,889 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:21:31,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:21:31,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1424760763, now seen corresponding path program 1 times [2024-10-23 20:21:31,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:21:31,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989647444] [2024-10-23 20:21:31,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:21:31,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:21:31,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:21:32,192 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 53 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-23 20:21:32,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:21:32,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989647444] [2024-10-23 20:21:32,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989647444] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 20:21:32,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448190896] [2024-10-23 20:21:32,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:21:32,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:21:32,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 20:21:32,198 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 20:21:32,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-23 20:21:32,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:21:32,307 INFO L255 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 20:21:32,310 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 20:21:32,468 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-10-23 20:21:32,469 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 20:21:32,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448190896] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:21:32,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 20:21:32,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-23 20:21:32,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620668062] [2024-10-23 20:21:32,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:21:32,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:21:32,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:21:32,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:21:32,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-23 20:21:32,470 INFO L87 Difference]: Start difference. First operand 35085 states and 41262 transitions. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:21:33,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:21:33,393 INFO L93 Difference]: Finished difference Result 84435 states and 99670 transitions. [2024-10-23 20:21:33,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:21:33,394 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 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 227 [2024-10-23 20:21:33,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:21:33,471 INFO L225 Difference]: With dead ends: 84435 [2024-10-23 20:21:33,471 INFO L226 Difference]: Without dead ends: 49757 [2024-10-23 20:21:33,503 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-23 20:21:33,504 INFO L432 NwaCegarLoop]: 182 mSDtfsCounter, 63 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-23 20:21:33,504 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 216 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-23 20:21:33,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49757 states. [2024-10-23 20:21:34,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49757 to 47074. [2024-10-23 20:21:34,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47074 states, 47073 states have (on average 1.1830985915492958) internal successors, (55692), 47073 states have internal predecessors, (55692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:21:34,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47074 states to 47074 states and 55692 transitions. [2024-10-23 20:21:34,287 INFO L78 Accepts]: Start accepts. Automaton has 47074 states and 55692 transitions. Word has length 227 [2024-10-23 20:21:34,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:21:34,288 INFO L471 AbstractCegarLoop]: Abstraction has 47074 states and 55692 transitions. [2024-10-23 20:21:34,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:21:34,288 INFO L276 IsEmpty]: Start isEmpty. Operand 47074 states and 55692 transitions. [2024-10-23 20:21:34,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2024-10-23 20:21:34,320 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:21:34,320 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:21:34,347 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-23 20:21:34,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:21:34,521 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:21:34,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:21:34,522 INFO L85 PathProgramCache]: Analyzing trace with hash 939757049, now seen corresponding path program 1 times [2024-10-23 20:21:34,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:21:34,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103979713] [2024-10-23 20:21:34,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:21:34,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:21:34,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:21:34,938 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 74 proven. 6 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-10-23 20:21:34,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:21:34,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103979713] [2024-10-23 20:21:34,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103979713] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 20:21:34,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212355871] [2024-10-23 20:21:34,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:21:34,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:21:34,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 20:21:34,942 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 20:21:34,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-23 20:21:35,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:21:35,065 INFO L255 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 20:21:35,067 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 20:21:35,080 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-23 20:21:35,081 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 20:21:35,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212355871] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:21:35,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 20:21:35,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-23 20:21:35,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790081582] [2024-10-23 20:21:35,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:21:35,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:21:35,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:21:35,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:21:35,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-23 20:21:35,085 INFO L87 Difference]: Start difference. First operand 47074 states and 55692 transitions. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:21:35,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:21:35,969 INFO L93 Difference]: Finished difference Result 93744 states and 110936 transitions. [2024-10-23 20:21:35,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:21:35,969 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 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 244 [2024-10-23 20:21:35,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:21:36,021 INFO L225 Difference]: With dead ends: 93744 [2024-10-23 20:21:36,021 INFO L226 Difference]: Without dead ends: 47077 [2024-10-23 20:21:36,055 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-23 20:21:36,055 INFO L432 NwaCegarLoop]: 319 mSDtfsCounter, 262 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-23 20:21:36,056 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 339 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-23 20:21:36,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47077 states. [2024-10-23 20:21:36,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47077 to 45855. [2024-10-23 20:21:36,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45855 states, 45854 states have (on average 1.1619269856501069) internal successors, (53279), 45854 states have internal predecessors, (53279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:21:36,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45855 states to 45855 states and 53279 transitions. [2024-10-23 20:21:36,827 INFO L78 Accepts]: Start accepts. Automaton has 45855 states and 53279 transitions. Word has length 244 [2024-10-23 20:21:36,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:21:36,827 INFO L471 AbstractCegarLoop]: Abstraction has 45855 states and 53279 transitions. [2024-10-23 20:21:36,827 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:21:36,827 INFO L276 IsEmpty]: Start isEmpty. Operand 45855 states and 53279 transitions. [2024-10-23 20:21:36,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2024-10-23 20:21:36,854 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:21:36,854 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-10-23 20:21:36,868 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-23 20:21:37,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-23 20:21:37,056 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:21:37,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:21:37,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1200500378, now seen corresponding path program 1 times [2024-10-23 20:21:37,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:21:37,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057967275] [2024-10-23 20:21:37,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:21:37,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:21:37,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:21:37,452 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 71 proven. 6 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-10-23 20:21:37,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:21:37,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057967275] [2024-10-23 20:21:37,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057967275] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 20:21:37,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231965694] [2024-10-23 20:21:37,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:21:37,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:21:37,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 20:21:37,454 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 20:21:37,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-23 20:21:37,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:21:37,567 INFO L255 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-23 20:21:37,572 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 20:21:37,616 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-23 20:21:37,620 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 20:21:37,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [231965694] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:21:37,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 20:21:37,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-23 20:21:37,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293157837] [2024-10-23 20:21:37,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:21:37,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:21:37,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:21:37,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:21:37,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-23 20:21:37,622 INFO L87 Difference]: Start difference. First operand 45855 states and 53279 transitions. Second operand has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:21:38,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:21:38,481 INFO L93 Difference]: Finished difference Result 88238 states and 102174 transitions. [2024-10-23 20:21:38,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:21:38,482 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 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 245 [2024-10-23 20:21:38,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:21:38,528 INFO L225 Difference]: With dead ends: 88238 [2024-10-23 20:21:38,528 INFO L226 Difference]: Without dead ends: 42790 [2024-10-23 20:21:38,561 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-23 20:21:38,561 INFO L432 NwaCegarLoop]: 348 mSDtfsCounter, 248 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-23 20:21:38,562 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 373 Invalid, 674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-23 20:21:38,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42790 states. [2024-10-23 20:21:39,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42790 to 39331. [2024-10-23 20:21:39,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39331 states, 39330 states have (on average 1.1241291634884312) internal successors, (44212), 39330 states have internal predecessors, (44212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:21:39,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39331 states to 39331 states and 44212 transitions. [2024-10-23 20:21:39,162 INFO L78 Accepts]: Start accepts. Automaton has 39331 states and 44212 transitions. Word has length 245 [2024-10-23 20:21:39,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:21:39,162 INFO L471 AbstractCegarLoop]: Abstraction has 39331 states and 44212 transitions. [2024-10-23 20:21:39,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:21:39,162 INFO L276 IsEmpty]: Start isEmpty. Operand 39331 states and 44212 transitions. [2024-10-23 20:21:39,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2024-10-23 20:21:39,183 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:21:39,184 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:21:39,198 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-23 20:21:39,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:21:39,388 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:21:39,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:21:39,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1339770074, now seen corresponding path program 1 times [2024-10-23 20:21:39,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:21:39,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269531799] [2024-10-23 20:21:39,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:21:39,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:21:39,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:21:39,575 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-23 20:21:39,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:21:39,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269531799] [2024-10-23 20:21:39,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269531799] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:21:39,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:21:39,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 20:21:39,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224016271] [2024-10-23 20:21:39,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:21:39,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 20:21:39,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:21:39,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 20:21:39,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 20:21:39,578 INFO L87 Difference]: Start difference. First operand 39331 states and 44212 transitions. Second operand has 4 states, 4 states have (on average 58.75) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:21:40,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:21:40,733 INFO L93 Difference]: Finished difference Result 145612 states and 163844 transitions. [2024-10-23 20:21:40,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 20:21:40,734 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 246 [2024-10-23 20:21:40,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:21:40,856 INFO L225 Difference]: With dead ends: 145612 [2024-10-23 20:21:40,857 INFO L226 Difference]: Without dead ends: 106891 [2024-10-23 20:21:40,902 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 [2024-10-23 20:21:40,903 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 880 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 751 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 880 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-23 20:21:40,903 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [880 Valid, 325 Invalid, 962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 751 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-23 20:21:40,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106891 states. [2024-10-23 20:21:42,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106891 to 87352. [2024-10-23 20:21:42,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87352 states, 87351 states have (on average 1.126535471832034) internal successors, (98404), 87351 states have internal predecessors, (98404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:21:42,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87352 states to 87352 states and 98404 transitions. [2024-10-23 20:21:42,441 INFO L78 Accepts]: Start accepts. Automaton has 87352 states and 98404 transitions. Word has length 246 [2024-10-23 20:21:42,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:21:42,441 INFO L471 AbstractCegarLoop]: Abstraction has 87352 states and 98404 transitions. [2024-10-23 20:21:42,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:21:42,442 INFO L276 IsEmpty]: Start isEmpty. Operand 87352 states and 98404 transitions. [2024-10-23 20:21:42,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2024-10-23 20:21:42,467 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:21:42,468 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:21:42,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-23 20:21:42,468 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:21:42,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:21:42,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1873668037, now seen corresponding path program 1 times [2024-10-23 20:21:42,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:21:42,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883842149] [2024-10-23 20:21:42,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:21:42,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:21:42,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:21:42,911 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-10-23 20:21:42,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:21:42,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883842149] [2024-10-23 20:21:42,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883842149] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:21:42,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:21:42,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 20:21:42,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051669494] [2024-10-23 20:21:42,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:21:42,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:21:42,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:21:42,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:21:42,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:21:42,914 INFO L87 Difference]: Start difference. First operand 87352 states and 98404 transitions. Second operand has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 2 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:21:43,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:21:43,905 INFO L93 Difference]: Finished difference Result 249146 states and 280525 transitions. [2024-10-23 20:21:43,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:21:43,906 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 2 states have internal predecessors, (278), 0 states have call successors, (0), 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 313 [2024-10-23 20:21:43,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:21:44,075 INFO L225 Difference]: With dead ends: 249146 [2024-10-23 20:21:44,075 INFO L226 Difference]: Without dead ends: 161998 [2024-10-23 20:21:44,103 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 [2024-10-23 20:21:44,106 INFO L432 NwaCegarLoop]: 291 mSDtfsCounter, 269 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-23 20:21:44,106 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 546 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-23 20:21:44,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161998 states. [2024-10-23 20:21:45,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161998 to 161996. [2024-10-23 20:21:45,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161996 states, 161995 states have (on average 1.1251458378345012) internal successors, (182268), 161995 states have internal predecessors, (182268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:21:46,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161996 states to 161996 states and 182268 transitions. [2024-10-23 20:21:46,519 INFO L78 Accepts]: Start accepts. Automaton has 161996 states and 182268 transitions. Word has length 313 [2024-10-23 20:21:46,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:21:46,523 INFO L471 AbstractCegarLoop]: Abstraction has 161996 states and 182268 transitions. [2024-10-23 20:21:46,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 2 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:21:46,523 INFO L276 IsEmpty]: Start isEmpty. Operand 161996 states and 182268 transitions. [2024-10-23 20:21:46,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2024-10-23 20:21:46,573 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:21:46,573 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:21:46,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-23 20:21:46,574 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:21:46,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:21:46,578 INFO L85 PathProgramCache]: Analyzing trace with hash -572345456, now seen corresponding path program 1 times [2024-10-23 20:21:46,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:21:46,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535176468] [2024-10-23 20:21:46,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:21:46,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:21:46,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:21:47,129 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 151 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-23 20:21:47,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:21:47,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535176468] [2024-10-23 20:21:47,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535176468] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 20:21:47,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617062361] [2024-10-23 20:21:47,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:21:47,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:21:47,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 20:21:47,131 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 20:21:47,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-23 20:21:47,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:21:47,269 INFO L255 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-23 20:21:47,273 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 20:21:47,803 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 163 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-23 20:21:47,803 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 20:21:47,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617062361] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:21:47,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 20:21:47,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2024-10-23 20:21:47,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165728112] [2024-10-23 20:21:47,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:21:47,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:21:47,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:21:47,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:21:47,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-23 20:21:47,805 INFO L87 Difference]: Start difference. First operand 161996 states and 182268 transitions. Second operand has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:21:49,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:21:49,315 INFO L93 Difference]: Finished difference Result 379710 states and 428537 transitions. [2024-10-23 20:21:49,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:21:49,315 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 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 333 [2024-10-23 20:21:49,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:21:49,646 INFO L225 Difference]: With dead ends: 379710 [2024-10-23 20:21:49,647 INFO L226 Difference]: Without dead ends: 217918 [2024-10-23 20:21:49,747 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-23 20:21:49,748 INFO L432 NwaCegarLoop]: 163 mSDtfsCounter, 114 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 654 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-23 20:21:49,749 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 196 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 654 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-23 20:21:49,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217918 states. [2024-10-23 20:21:52,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217918 to 211004. [2024-10-23 20:21:53,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211004 states, 211003 states have (on average 1.133235072487121) internal successors, (239116), 211003 states have internal predecessors, (239116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:21:53,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211004 states to 211004 states and 239116 transitions. [2024-10-23 20:21:53,316 INFO L78 Accepts]: Start accepts. Automaton has 211004 states and 239116 transitions. Word has length 333 [2024-10-23 20:21:53,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:21:53,317 INFO L471 AbstractCegarLoop]: Abstraction has 211004 states and 239116 transitions. [2024-10-23 20:21:53,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:21:53,317 INFO L276 IsEmpty]: Start isEmpty. Operand 211004 states and 239116 transitions. [2024-10-23 20:21:53,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2024-10-23 20:21:53,355 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:21:53,355 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-23 20:21:53,370 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-23 20:21:53,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:21:53,556 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:21:53,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:21:53,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1127292953, now seen corresponding path program 1 times [2024-10-23 20:21:53,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:21:53,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613167658] [2024-10-23 20:21:53,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:21:53,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:21:53,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:21:54,304 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 163 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-10-23 20:21:54,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:21:54,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613167658] [2024-10-23 20:21:54,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613167658] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:21:54,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:21:54,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 20:21:54,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928674433] [2024-10-23 20:21:54,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:21:54,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 20:21:54,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:21:54,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 20:21:54,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 20:21:54,312 INFO L87 Difference]: Start difference. First operand 211004 states and 239116 transitions. Second operand has 4 states, 4 states have (on average 70.5) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:21:56,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:21:56,744 INFO L93 Difference]: Finished difference Result 479569 states and 544549 transitions. [2024-10-23 20:21:56,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 20:21:56,744 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 70.5) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 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 339 [2024-10-23 20:21:56,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:21:57,153 INFO L225 Difference]: With dead ends: 479569 [2024-10-23 20:21:57,154 INFO L226 Difference]: Without dead ends: 268769 [2024-10-23 20:21:57,313 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 [2024-10-23 20:21:57,314 INFO L432 NwaCegarLoop]: 116 mSDtfsCounter, 356 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 1180 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 1438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 1180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-23 20:21:57,315 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 157 Invalid, 1438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 1180 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-23 20:21:57,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268769 states. [2024-10-23 20:22:00,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268769 to 240659. [2024-10-23 20:22:00,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240659 states, 240658 states have (on average 1.1297609055173732) internal successors, (271886), 240658 states have internal predecessors, (271886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:22:01,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240659 states to 240659 states and 271886 transitions. [2024-10-23 20:22:01,661 INFO L78 Accepts]: Start accepts. Automaton has 240659 states and 271886 transitions. Word has length 339 [2024-10-23 20:22:01,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:22:01,665 INFO L471 AbstractCegarLoop]: Abstraction has 240659 states and 271886 transitions. [2024-10-23 20:22:01,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.5) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:22:01,666 INFO L276 IsEmpty]: Start isEmpty. Operand 240659 states and 271886 transitions. [2024-10-23 20:22:01,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2024-10-23 20:22:01,802 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:22:01,802 INFO L215 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:22:01,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-23 20:22:01,803 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:22:01,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:22:01,803 INFO L85 PathProgramCache]: Analyzing trace with hash -2018244348, now seen corresponding path program 1 times [2024-10-23 20:22:01,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:22:01,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336030411] [2024-10-23 20:22:01,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:22:01,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:22:01,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:22:03,456 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 181 proven. 6 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-10-23 20:22:03,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:22:03,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336030411] [2024-10-23 20:22:03,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336030411] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 20:22:03,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229989457] [2024-10-23 20:22:03,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:22:03,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:22:03,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 20:22:03,458 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 20:22:03,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-23 20:22:03,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:22:03,606 INFO L255 TraceCheckSpWp]: Trace formula consists of 621 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-23 20:22:03,610 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 20:22:03,728 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 267 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-10-23 20:22:03,728 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 20:22:03,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229989457] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:22:03,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 20:22:03,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-23 20:22:03,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408699017] [2024-10-23 20:22:03,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:22:03,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:22:03,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:22:03,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:22:03,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-23 20:22:03,730 INFO L87 Difference]: Start difference. First operand 240659 states and 271886 transitions. Second operand has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:22:05,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:22:05,425 INFO L93 Difference]: Finished difference Result 511845 states and 578364 transitions. [2024-10-23 20:22:05,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:22:05,426 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 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 351 [2024-10-23 20:22:05,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:22:05,771 INFO L225 Difference]: With dead ends: 511845 [2024-10-23 20:22:05,771 INFO L226 Difference]: Without dead ends: 271390 [2024-10-23 20:22:06,354 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-23 20:22:06,356 INFO L432 NwaCegarLoop]: 161 mSDtfsCounter, 166 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-23 20:22:06,356 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 184 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 631 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-23 20:22:06,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271390 states.