./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/Problem12_label06.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/Problem12_label06.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 b8e390e3329fd730c72061af7f4f756de3cffbc4334952b16b06779e5db77927 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-23 21:04:28,121 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-23 21:04:28,179 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-23 21:04:28,184 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-23 21:04:28,186 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-23 21:04:28,215 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-23 21:04:28,216 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-23 21:04:28,216 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-23 21:04:28,217 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-23 21:04:28,219 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-23 21:04:28,219 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-23 21:04:28,220 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-23 21:04:28,220 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-23 21:04:28,220 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-23 21:04:28,220 INFO L153 SettingsManager]: * Use SBE=true [2024-10-23 21:04:28,221 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-23 21:04:28,221 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-23 21:04:28,221 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-23 21:04:28,222 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-23 21:04:28,222 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-23 21:04:28,222 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-23 21:04:28,223 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-23 21:04:28,223 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-23 21:04:28,223 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-23 21:04:28,223 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-23 21:04:28,223 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-23 21:04:28,223 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-23 21:04:28,224 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-23 21:04:28,224 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-23 21:04:28,224 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-23 21:04:28,224 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-23 21:04:28,224 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-23 21:04:28,224 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 21:04:28,225 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-23 21:04:28,225 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-23 21:04:28,225 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-23 21:04:28,225 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-23 21:04:28,225 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-23 21:04:28,225 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-23 21:04:28,226 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-23 21:04:28,226 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-23 21:04:28,227 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-23 21:04:28,227 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8e390e3329fd730c72061af7f4f756de3cffbc4334952b16b06779e5db77927 [2024-10-23 21:04:28,414 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-23 21:04:28,432 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-23 21:04:28,436 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-23 21:04:28,436 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-23 21:04:28,437 INFO L274 PluginConnector]: CDTParser initialized [2024-10-23 21:04:28,438 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label06.c [2024-10-23 21:04:29,661 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-23 21:04:29,947 INFO L384 CDTParser]: Found 1 translation units. [2024-10-23 21:04:29,948 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label06.c [2024-10-23 21:04:29,974 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c9941597/b751a769507946c290f5a190e5055867/FLAG4e18c876d [2024-10-23 21:04:29,986 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c9941597/b751a769507946c290f5a190e5055867 [2024-10-23 21:04:29,988 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-23 21:04:29,989 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-23 21:04:29,991 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-23 21:04:29,992 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-23 21:04:29,995 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-23 21:04:29,996 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:04:29" (1/1) ... [2024-10-23 21:04:29,997 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c0ca783 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:04:29, skipping insertion in model container [2024-10-23 21:04:29,998 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:04:29" (1/1) ... [2024-10-23 21:04:30,083 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-23 21:04:30,261 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/Problem12_label06.c[3178,3191] [2024-10-23 21:04:30,862 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 21:04:30,870 INFO L200 MainTranslator]: Completed pre-run [2024-10-23 21:04:30,887 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/Problem12_label06.c[3178,3191] [2024-10-23 21:04:31,182 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 21:04:31,201 INFO L204 MainTranslator]: Completed translation [2024-10-23 21:04:31,201 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:04:31 WrapperNode [2024-10-23 21:04:31,202 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-23 21:04:31,202 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-23 21:04:31,202 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-23 21:04:31,203 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-23 21:04:31,208 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:04:31" (1/1) ... [2024-10-23 21:04:31,250 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:04:31" (1/1) ... [2024-10-23 21:04:31,444 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4761 [2024-10-23 21:04:31,445 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-23 21:04:31,446 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-23 21:04:31,446 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-23 21:04:31,446 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-23 21:04:31,454 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:04:31" (1/1) ... [2024-10-23 21:04:31,454 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:04:31" (1/1) ... [2024-10-23 21:04:31,485 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:04:31" (1/1) ... [2024-10-23 21:04:31,659 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 21:04:31,659 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:04:31" (1/1) ... [2024-10-23 21:04:31,659 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:04:31" (1/1) ... [2024-10-23 21:04:31,781 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:04:31" (1/1) ... [2024-10-23 21:04:31,800 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:04:31" (1/1) ... [2024-10-23 21:04:31,837 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:04:31" (1/1) ... [2024-10-23 21:04:31,852 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:04:31" (1/1) ... [2024-10-23 21:04:31,905 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-23 21:04:31,906 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-23 21:04:31,906 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-23 21:04:31,907 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-23 21:04:31,908 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:04:31" (1/1) ... [2024-10-23 21:04:31,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 21:04:31,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:04:31,931 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 21:04:31,935 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 21:04:31,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-23 21:04:31,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-23 21:04:31,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-23 21:04:31,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-23 21:04:32,028 INFO L238 CfgBuilder]: Building ICFG [2024-10-23 21:04:32,029 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-23 21:04:34,982 INFO L? ?]: Removed 702 outVars from TransFormulas that were not future-live. [2024-10-23 21:04:34,982 INFO L287 CfgBuilder]: Performing block encoding [2024-10-23 21:04:35,029 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-23 21:04:35,032 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-23 21:04:35,032 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:04:35 BoogieIcfgContainer [2024-10-23 21:04:35,033 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-23 21:04:35,034 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-23 21:04:35,034 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-23 21:04:35,036 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-23 21:04:35,037 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:04:29" (1/3) ... [2024-10-23 21:04:35,037 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@410ff42b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:04:35, skipping insertion in model container [2024-10-23 21:04:35,037 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:04:31" (2/3) ... [2024-10-23 21:04:35,037 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@410ff42b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:04:35, skipping insertion in model container [2024-10-23 21:04:35,038 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:04:35" (3/3) ... [2024-10-23 21:04:35,038 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label06.c [2024-10-23 21:04:35,051 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-23 21:04:35,051 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-23 21:04:35,111 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-23 21:04:35,117 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;@7f1294da, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-23 21:04:35,118 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-23 21:04:35,123 INFO L276 IsEmpty]: Start isEmpty. Operand has 756 states, 754 states have (on average 1.993368700265252) internal successors, (1503), 755 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states 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 21:04:35,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-10-23 21:04:35,127 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:04:35,128 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] [2024-10-23 21:04:35,128 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:04:35,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:04:35,135 INFO L85 PathProgramCache]: Analyzing trace with hash 748368663, now seen corresponding path program 1 times [2024-10-23 21:04:35,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:04:35,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861771480] [2024-10-23 21:04:35,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:04:35,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:04:35,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:04:35,270 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 21:04:35,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:04:35,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861771480] [2024-10-23 21:04:35,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861771480] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:04:35,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:04:35,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:04:35,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503083467] [2024-10-23 21:04:35,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:04:35,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-23 21:04:35,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:04:35,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-23 21:04:35,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 21:04:35,301 INFO L87 Difference]: Start difference. First operand has 756 states, 754 states have (on average 1.993368700265252) internal successors, (1503), 755 states have internal predecessors, (1503), 0 states have call successors, (0), 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 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states 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 21:04:35,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:04:35,418 INFO L93 Difference]: Finished difference Result 1511 states and 3005 transitions. [2024-10-23 21:04:35,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-23 21:04:35,420 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2024-10-23 21:04:35,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:04:35,437 INFO L225 Difference]: With dead ends: 1511 [2024-10-23 21:04:35,439 INFO L226 Difference]: Without dead ends: 754 [2024-10-23 21:04:35,446 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 21:04:35,449 INFO L432 NwaCegarLoop]: 1438 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, 1438 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 21:04:35,450 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1438 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-23 21:04:35,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2024-10-23 21:04:35,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 754. [2024-10-23 21:04:35,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 753 states have (on average 1.9096945551128819) internal successors, (1438), 753 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 21:04:35,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1438 transitions. [2024-10-23 21:04:35,525 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1438 transitions. Word has length 22 [2024-10-23 21:04:35,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:04:35,525 INFO L471 AbstractCegarLoop]: Abstraction has 754 states and 1438 transitions. [2024-10-23 21:04:35,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states 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 21:04:35,526 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1438 transitions. [2024-10-23 21:04:35,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-10-23 21:04:35,527 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:04:35,527 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] [2024-10-23 21:04:35,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-23 21:04:35,527 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:04:35,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:04:35,528 INFO L85 PathProgramCache]: Analyzing trace with hash -90270926, now seen corresponding path program 1 times [2024-10-23 21:04:35,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:04:35,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470316648] [2024-10-23 21:04:35,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:04:35,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:04:35,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:04:35,657 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 21:04:35,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:04:35,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470316648] [2024-10-23 21:04:35,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470316648] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:04:35,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:04:35,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:04:35,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784072233] [2024-10-23 21:04:35,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:04:35,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:04:35,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:04:35,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:04:35,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:04:35,660 INFO L87 Difference]: Start difference. First operand 754 states and 1438 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states 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 21:04:38,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:04:38,345 INFO L93 Difference]: Finished difference Result 2258 states and 4311 transitions. [2024-10-23 21:04:38,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:04:38,345 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2024-10-23 21:04:38,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:04:38,353 INFO L225 Difference]: With dead ends: 2258 [2024-10-23 21:04:38,353 INFO L226 Difference]: Without dead ends: 1505 [2024-10-23 21:04:38,354 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 21:04:38,355 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 846 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2378 mSolverCounterSat, 711 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 3089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 711 IncrementalHoareTripleChecker+Valid, 2378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-10-23 21:04:38,355 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [846 Valid, 113 Invalid, 3089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [711 Valid, 2378 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-10-23 21:04:38,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1505 states. [2024-10-23 21:04:38,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1505 to 1505. [2024-10-23 21:04:38,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1505 states, 1504 states have (on average 1.846409574468085) internal successors, (2777), 1504 states have internal predecessors, (2777), 0 states have call successors, (0), 0 states 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 21:04:38,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1505 states to 1505 states and 2777 transitions. [2024-10-23 21:04:38,380 INFO L78 Accepts]: Start accepts. Automaton has 1505 states and 2777 transitions. Word has length 22 [2024-10-23 21:04:38,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:04:38,380 INFO L471 AbstractCegarLoop]: Abstraction has 1505 states and 2777 transitions. [2024-10-23 21:04:38,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states 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 21:04:38,380 INFO L276 IsEmpty]: Start isEmpty. Operand 1505 states and 2777 transitions. [2024-10-23 21:04:38,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-23 21:04:38,405 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:04:38,405 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:04:38,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-23 21:04:38,406 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:04:38,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:04:38,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1602260221, now seen corresponding path program 1 times [2024-10-23 21:04:38,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:04:38,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637284783] [2024-10-23 21:04:38,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:04:38,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:04:38,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:04:38,550 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:04:38,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:04:38,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637284783] [2024-10-23 21:04:38,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637284783] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:04:38,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:04:38,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:04:38,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122294080] [2024-10-23 21:04:38,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:04:38,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:04:38,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:04:38,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:04:38,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:04:38,552 INFO L87 Difference]: Start difference. First operand 1505 states and 2777 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:40,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:04:40,871 INFO L93 Difference]: Finished difference Result 3760 states and 6892 transitions. [2024-10-23 21:04:40,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:04:40,871 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2024-10-23 21:04:40,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:04:40,878 INFO L225 Difference]: With dead ends: 3760 [2024-10-23 21:04:40,878 INFO L226 Difference]: Without dead ends: 2256 [2024-10-23 21:04:40,879 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 21:04:40,880 INFO L432 NwaCegarLoop]: 440 mSDtfsCounter, 780 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1996 mSolverCounterSat, 864 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 2860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 864 IncrementalHoareTripleChecker+Valid, 1996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-10-23 21:04:40,880 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [780 Valid, 446 Invalid, 2860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [864 Valid, 1996 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-10-23 21:04:40,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2256 states. [2024-10-23 21:04:40,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2256 to 2256. [2024-10-23 21:04:40,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2256 states, 2255 states have (on average 1.4421286031042129) internal successors, (3252), 2255 states have internal predecessors, (3252), 0 states have call successors, (0), 0 states 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 21:04:40,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2256 states to 2256 states and 3252 transitions. [2024-10-23 21:04:40,909 INFO L78 Accepts]: Start accepts. Automaton has 2256 states and 3252 transitions. Word has length 91 [2024-10-23 21:04:40,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:04:40,910 INFO L471 AbstractCegarLoop]: Abstraction has 2256 states and 3252 transitions. [2024-10-23 21:04:40,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:40,911 INFO L276 IsEmpty]: Start isEmpty. Operand 2256 states and 3252 transitions. [2024-10-23 21:04:40,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-10-23 21:04:40,916 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:04:40,916 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:04:40,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-23 21:04:40,919 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:04:40,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:04:40,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1168978978, now seen corresponding path program 1 times [2024-10-23 21:04:40,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:04:40,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462946280] [2024-10-23 21:04:40,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:04:40,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:04:40,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:04:41,061 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-23 21:04:41,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:04:41,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462946280] [2024-10-23 21:04:41,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462946280] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:04:41,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:04:41,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:04:41,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454301387] [2024-10-23 21:04:41,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:04:41,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:04:41,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:04:41,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:04:41,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:04:41,065 INFO L87 Difference]: Start difference. First operand 2256 states and 3252 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:43,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:04:43,336 INFO L93 Difference]: Finished difference Result 6764 states and 9753 transitions. [2024-10-23 21:04:43,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:04:43,337 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2024-10-23 21:04:43,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:04:43,350 INFO L225 Difference]: With dead ends: 6764 [2024-10-23 21:04:43,351 INFO L226 Difference]: Without dead ends: 4509 [2024-10-23 21:04:43,354 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 21:04:43,355 INFO L432 NwaCegarLoop]: 609 mSDtfsCounter, 726 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2339 mSolverCounterSat, 630 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 2969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 630 IncrementalHoareTripleChecker+Valid, 2339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-10-23 21:04:43,355 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [726 Valid, 616 Invalid, 2969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [630 Valid, 2339 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-10-23 21:04:43,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4509 states. [2024-10-23 21:04:43,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4509 to 4509. [2024-10-23 21:04:43,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4509 states, 4508 states have (on average 1.2930346051464063) internal successors, (5829), 4508 states have internal predecessors, (5829), 0 states have call successors, (0), 0 states 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 21:04:43,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4509 states to 4509 states and 5829 transitions. [2024-10-23 21:04:43,412 INFO L78 Accepts]: Start accepts. Automaton has 4509 states and 5829 transitions. Word has length 93 [2024-10-23 21:04:43,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:04:43,414 INFO L471 AbstractCegarLoop]: Abstraction has 4509 states and 5829 transitions. [2024-10-23 21:04:43,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:43,414 INFO L276 IsEmpty]: Start isEmpty. Operand 4509 states and 5829 transitions. [2024-10-23 21:04:43,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-10-23 21:04:43,420 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:04:43,420 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:04:43,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-23 21:04:43,420 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:04:43,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:04:43,421 INFO L85 PathProgramCache]: Analyzing trace with hash 973427089, now seen corresponding path program 1 times [2024-10-23 21:04:43,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:04:43,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387540853] [2024-10-23 21:04:43,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:04:43,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:04:43,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:04:43,664 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:04:43,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:04:43,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387540853] [2024-10-23 21:04:43,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387540853] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:04:43,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:04:43,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:04:43,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122405942] [2024-10-23 21:04:43,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:04:43,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:04:43,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:04:43,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:04:43,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:04:43,667 INFO L87 Difference]: Start difference. First operand 4509 states and 5829 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 21:04:46,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:04:46,834 INFO L93 Difference]: Finished difference Result 14274 states and 18283 transitions. [2024-10-23 21:04:46,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:04:46,835 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2024-10-23 21:04:46,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:04:46,859 INFO L225 Difference]: With dead ends: 14274 [2024-10-23 21:04:46,859 INFO L226 Difference]: Without dead ends: 9766 [2024-10-23 21:04:46,863 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-23 21:04:46,864 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 2181 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 4713 mSolverCounterSat, 711 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2181 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 5424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 711 IncrementalHoareTripleChecker+Valid, 4713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-10-23 21:04:46,864 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2181 Valid, 162 Invalid, 5424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [711 Valid, 4713 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-10-23 21:04:46,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9766 states. [2024-10-23 21:04:46,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9766 to 9766. [2024-10-23 21:04:46,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9766 states, 9765 states have (on average 1.2558115719406042) internal successors, (12263), 9765 states have internal predecessors, (12263), 0 states have call successors, (0), 0 states 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 21:04:47,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9766 states to 9766 states and 12263 transitions. [2024-10-23 21:04:47,011 INFO L78 Accepts]: Start accepts. Automaton has 9766 states and 12263 transitions. Word has length 99 [2024-10-23 21:04:47,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:04:47,012 INFO L471 AbstractCegarLoop]: Abstraction has 9766 states and 12263 transitions. [2024-10-23 21:04:47,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 21:04:47,013 INFO L276 IsEmpty]: Start isEmpty. Operand 9766 states and 12263 transitions. [2024-10-23 21:04:47,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-10-23 21:04:47,018 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:04:47,018 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:04:47,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-23 21:04:47,018 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:04:47,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:04:47,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1980287327, now seen corresponding path program 1 times [2024-10-23 21:04:47,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:04:47,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934003028] [2024-10-23 21:04:47,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:04:47,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:04:47,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:04:47,310 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:04:47,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:04:47,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934003028] [2024-10-23 21:04:47,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934003028] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:04:47,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:04:47,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:04:47,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373667080] [2024-10-23 21:04:47,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:04:47,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:04:47,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:04:47,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:04:47,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:04:47,314 INFO L87 Difference]: Start difference. First operand 9766 states and 12263 transitions. Second operand has 4 states, 4 states have (on average 42.5) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states 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 21:04:49,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:04:49,663 INFO L93 Difference]: Finished difference Result 21821 states and 27289 transitions. [2024-10-23 21:04:49,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:04:49,665 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 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 170 [2024-10-23 21:04:49,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:04:49,696 INFO L225 Difference]: With dead ends: 21821 [2024-10-23 21:04:49,696 INFO L226 Difference]: Without dead ends: 12770 [2024-10-23 21:04:49,702 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 21:04:49,703 INFO L432 NwaCegarLoop]: 596 mSDtfsCounter, 688 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 3681 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 3882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 3681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-10-23 21:04:49,705 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [688 Valid, 613 Invalid, 3882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 3681 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-10-23 21:04:49,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12770 states. [2024-10-23 21:04:49,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12770 to 12019. [2024-10-23 21:04:49,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12019 states, 12018 states have (on average 1.2085205525045766) internal successors, (14524), 12018 states have internal predecessors, (14524), 0 states have call successors, (0), 0 states 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 21:04:49,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12019 states to 12019 states and 14524 transitions. [2024-10-23 21:04:49,856 INFO L78 Accepts]: Start accepts. Automaton has 12019 states and 14524 transitions. Word has length 170 [2024-10-23 21:04:49,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:04:49,856 INFO L471 AbstractCegarLoop]: Abstraction has 12019 states and 14524 transitions. [2024-10-23 21:04:49,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states 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 21:04:49,857 INFO L276 IsEmpty]: Start isEmpty. Operand 12019 states and 14524 transitions. [2024-10-23 21:04:49,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2024-10-23 21:04:49,858 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:04:49,858 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:04:49,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-23 21:04:49,858 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:04:49,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:04:49,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1899414461, now seen corresponding path program 1 times [2024-10-23 21:04:49,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:04:49,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193804201] [2024-10-23 21:04:49,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:04:49,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:04:49,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:04:49,996 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-23 21:04:49,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:04:49,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193804201] [2024-10-23 21:04:49,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193804201] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:04:49,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:04:49,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:04:49,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781703829] [2024-10-23 21:04:49,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:04:49,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:04:49,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:04:49,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:04:49,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:04:49,998 INFO L87 Difference]: Start difference. First operand 12019 states and 14524 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 21:04:52,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:04:52,192 INFO L93 Difference]: Finished difference Result 27792 states and 34551 transitions. [2024-10-23 21:04:52,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:04:52,192 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 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 234 [2024-10-23 21:04:52,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:04:52,209 INFO L225 Difference]: With dead ends: 27792 [2024-10-23 21:04:52,209 INFO L226 Difference]: Without dead ends: 16525 [2024-10-23 21:04:52,215 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 21:04:52,216 INFO L432 NwaCegarLoop]: 486 mSDtfsCounter, 762 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2219 mSolverCounterSat, 626 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 762 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 2845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 626 IncrementalHoareTripleChecker+Valid, 2219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-10-23 21:04:52,216 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [762 Valid, 493 Invalid, 2845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [626 Valid, 2219 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-10-23 21:04:52,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16525 states. [2024-10-23 21:04:52,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16525 to 12019. [2024-10-23 21:04:52,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12019 states, 12018 states have (on average 1.2085205525045766) internal successors, (14524), 12018 states have internal predecessors, (14524), 0 states have call successors, (0), 0 states 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 21:04:52,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12019 states to 12019 states and 14524 transitions. [2024-10-23 21:04:52,339 INFO L78 Accepts]: Start accepts. Automaton has 12019 states and 14524 transitions. Word has length 234 [2024-10-23 21:04:52,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:04:52,339 INFO L471 AbstractCegarLoop]: Abstraction has 12019 states and 14524 transitions. [2024-10-23 21:04:52,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 21:04:52,339 INFO L276 IsEmpty]: Start isEmpty. Operand 12019 states and 14524 transitions. [2024-10-23 21:04:52,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2024-10-23 21:04:52,341 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:04:52,341 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:04:52,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-23 21:04:52,341 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:04:52,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:04:52,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1965594552, now seen corresponding path program 1 times [2024-10-23 21:04:52,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:04:52,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465213830] [2024-10-23 21:04:52,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:04:52,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:04:52,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:04:52,481 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-10-23 21:04:52,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:04:52,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465213830] [2024-10-23 21:04:52,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465213830] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:04:52,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:04:52,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:04:52,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669818861] [2024-10-23 21:04:52,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:04:52,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:04:52,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:04:52,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:04:52,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:04:52,485 INFO L87 Difference]: Start difference. First operand 12019 states and 14524 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 21:04:54,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:04:54,664 INFO L93 Difference]: Finished difference Result 31549 states and 38844 transitions. [2024-10-23 21:04:54,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:04:54,665 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 235 [2024-10-23 21:04:54,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:04:54,692 INFO L225 Difference]: With dead ends: 31549 [2024-10-23 21:04:54,693 INFO L226 Difference]: Without dead ends: 20282 [2024-10-23 21:04:54,699 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 21:04:54,700 INFO L432 NwaCegarLoop]: 303 mSDtfsCounter, 848 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2310 mSolverCounterSat, 466 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 2776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 466 IncrementalHoareTripleChecker+Valid, 2310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-10-23 21:04:54,700 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 310 Invalid, 2776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [466 Valid, 2310 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-10-23 21:04:54,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20282 states. [2024-10-23 21:04:54,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20282 to 18778. [2024-10-23 21:04:54,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18778 states, 18777 states have (on average 1.1888480587953347) internal successors, (22323), 18777 states have internal predecessors, (22323), 0 states have call successors, (0), 0 states 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 21:04:54,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18778 states to 18778 states and 22323 transitions. [2024-10-23 21:04:54,873 INFO L78 Accepts]: Start accepts. Automaton has 18778 states and 22323 transitions. Word has length 235 [2024-10-23 21:04:54,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:04:54,873 INFO L471 AbstractCegarLoop]: Abstraction has 18778 states and 22323 transitions. [2024-10-23 21:04:54,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 21:04:54,874 INFO L276 IsEmpty]: Start isEmpty. Operand 18778 states and 22323 transitions. [2024-10-23 21:04:54,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2024-10-23 21:04:54,877 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:04:54,877 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-23 21:04:54,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-23 21:04:54,877 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:04:54,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:04:54,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1604606477, now seen corresponding path program 1 times [2024-10-23 21:04:54,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:04:54,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277759779] [2024-10-23 21:04:54,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:04:54,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:04:54,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:04:55,073 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 199 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-10-23 21:04:55,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:04:55,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277759779] [2024-10-23 21:04:55,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277759779] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:04:55,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:04:55,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:04:55,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094216884] [2024-10-23 21:04:55,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:04:55,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:04:55,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:04:55,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:04:55,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:04:55,076 INFO L87 Difference]: Start difference. First operand 18778 states and 22323 transitions. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states 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 21:04:57,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:04:57,325 INFO L93 Difference]: Finished difference Result 43563 states and 53012 transitions. [2024-10-23 21:04:57,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:04:57,328 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 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 321 [2024-10-23 21:04:57,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:04:57,358 INFO L225 Difference]: With dead ends: 43563 [2024-10-23 21:04:57,359 INFO L226 Difference]: Without dead ends: 25537 [2024-10-23 21:04:57,373 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 21:04:57,374 INFO L432 NwaCegarLoop]: 1206 mSDtfsCounter, 704 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2255 mSolverCounterSat, 439 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 1213 SdHoareTripleChecker+Invalid, 2694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 439 IncrementalHoareTripleChecker+Valid, 2255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-10-23 21:04:57,374 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [704 Valid, 1213 Invalid, 2694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [439 Valid, 2255 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-10-23 21:04:57,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25537 states. [2024-10-23 21:04:57,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25537 to 24035. [2024-10-23 21:04:57,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24035 states, 24034 states have (on average 1.1785387367895481) internal successors, (28325), 24034 states have internal predecessors, (28325), 0 states have call successors, (0), 0 states 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 21:04:57,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24035 states to 24035 states and 28325 transitions. [2024-10-23 21:04:57,618 INFO L78 Accepts]: Start accepts. Automaton has 24035 states and 28325 transitions. Word has length 321 [2024-10-23 21:04:57,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:04:57,619 INFO L471 AbstractCegarLoop]: Abstraction has 24035 states and 28325 transitions. [2024-10-23 21:04:57,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states 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 21:04:57,619 INFO L276 IsEmpty]: Start isEmpty. Operand 24035 states and 28325 transitions. [2024-10-23 21:04:57,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2024-10-23 21:04:57,622 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:04:57,622 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:04:57,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-23 21:04:57,623 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:04:57,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:04:57,623 INFO L85 PathProgramCache]: Analyzing trace with hash -2132047911, now seen corresponding path program 1 times [2024-10-23 21:04:57,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:04:57,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005388435] [2024-10-23 21:04:57,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:04:57,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:04:57,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:04:57,811 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 294 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-10-23 21:04:57,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:04:57,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005388435] [2024-10-23 21:04:57,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005388435] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:04:57,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:04:57,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:04:57,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757860602] [2024-10-23 21:04:57,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:04:57,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:04:57,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:04:57,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:04:57,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:04:57,816 INFO L87 Difference]: Start difference. First operand 24035 states and 28325 transitions. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states 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 21:05:00,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:05:00,175 INFO L93 Difference]: Finished difference Result 60836 states and 71502 transitions. [2024-10-23 21:05:00,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:05:00,175 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 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 349 [2024-10-23 21:05:00,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:05:00,206 INFO L225 Difference]: With dead ends: 60836 [2024-10-23 21:05:00,206 INFO L226 Difference]: Without dead ends: 37553 [2024-10-23 21:05:00,222 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 21:05:00,222 INFO L432 NwaCegarLoop]: 1237 mSDtfsCounter, 635 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2626 mSolverCounterSat, 333 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 1244 SdHoareTripleChecker+Invalid, 2959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 333 IncrementalHoareTripleChecker+Valid, 2626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-10-23 21:05:00,222 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [635 Valid, 1244 Invalid, 2959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [333 Valid, 2626 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-10-23 21:05:00,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37553 states. [2024-10-23 21:05:00,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37553 to 35300. [2024-10-23 21:05:00,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35300 states, 35299 states have (on average 1.166860250998612) internal successors, (41189), 35299 states have internal predecessors, (41189), 0 states have call successors, (0), 0 states 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 21:05:00,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35300 states to 35300 states and 41189 transitions. [2024-10-23 21:05:00,529 INFO L78 Accepts]: Start accepts. Automaton has 35300 states and 41189 transitions. Word has length 349 [2024-10-23 21:05:00,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:05:00,530 INFO L471 AbstractCegarLoop]: Abstraction has 35300 states and 41189 transitions. [2024-10-23 21:05:00,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states 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 21:05:00,530 INFO L276 IsEmpty]: Start isEmpty. Operand 35300 states and 41189 transitions. [2024-10-23 21:05:00,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2024-10-23 21:05:00,536 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:05:00,537 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:05:00,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-23 21:05:00,537 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:05:00,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:05:00,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1723277731, now seen corresponding path program 1 times [2024-10-23 21:05:00,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:05:00,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845851375] [2024-10-23 21:05:00,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:05:00,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:05:00,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:05:00,721 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2024-10-23 21:05:00,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:05:00,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845851375] [2024-10-23 21:05:00,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845851375] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:05:00,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:05:00,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:05:00,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892761991] [2024-10-23 21:05:00,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:05:00,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:05:00,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:05:00,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:05:00,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:05:00,723 INFO L87 Difference]: Start difference. First operand 35300 states and 41189 transitions. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states 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 21:05:03,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:05:03,021 INFO L93 Difference]: Finished difference Result 102892 states and 120517 transitions. [2024-10-23 21:05:03,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:05:03,021 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 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 353 [2024-10-23 21:05:03,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:05:03,084 INFO L225 Difference]: With dead ends: 102892 [2024-10-23 21:05:03,084 INFO L226 Difference]: Without dead ends: 63838 [2024-10-23 21:05:03,116 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 21:05:03,117 INFO L432 NwaCegarLoop]: 1305 mSDtfsCounter, 770 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2235 mSolverCounterSat, 620 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 770 SdHoareTripleChecker+Valid, 1312 SdHoareTripleChecker+Invalid, 2855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 620 IncrementalHoareTripleChecker+Valid, 2235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-10-23 21:05:03,117 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [770 Valid, 1312 Invalid, 2855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [620 Valid, 2235 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-10-23 21:05:03,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63838 states. [2024-10-23 21:05:03,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63838 to 53324. [2024-10-23 21:05:03,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53324 states, 53323 states have (on average 1.1311441591808413) internal successors, (60316), 53323 states have internal predecessors, (60316), 0 states have call successors, (0), 0 states 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 21:05:03,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53324 states to 53324 states and 60316 transitions. [2024-10-23 21:05:03,690 INFO L78 Accepts]: Start accepts. Automaton has 53324 states and 60316 transitions. Word has length 353 [2024-10-23 21:05:03,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:05:03,690 INFO L471 AbstractCegarLoop]: Abstraction has 53324 states and 60316 transitions. [2024-10-23 21:05:03,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states 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 21:05:03,690 INFO L276 IsEmpty]: Start isEmpty. Operand 53324 states and 60316 transitions. [2024-10-23 21:05:03,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2024-10-23 21:05:03,694 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:05:03,694 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-23 21:05:03,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-23 21:05:03,694 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:05:03,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:05:03,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1450186003, now seen corresponding path program 1 times [2024-10-23 21:05:03,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:05:03,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934901509] [2024-10-23 21:05:03,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:05:03,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:05:03,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:05:03,868 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 254 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-10-23 21:05:03,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:05:03,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934901509] [2024-10-23 21:05:03,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934901509] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:05:03,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:05:03,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:05:03,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042588162] [2024-10-23 21:05:03,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:05:03,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:05:03,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:05:03,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:05:03,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:05:03,871 INFO L87 Difference]: Start difference. First operand 53324 states and 60316 transitions. Second operand has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states 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 21:05:06,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:05:06,425 INFO L93 Difference]: Finished difference Result 135185 states and 154638 transitions. [2024-10-23 21:05:06,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:05:06,425 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 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 360 [2024-10-23 21:05:06,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:05:06,502 INFO L225 Difference]: With dead ends: 135185 [2024-10-23 21:05:06,503 INFO L226 Difference]: Without dead ends: 82613 [2024-10-23 21:05:06,519 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 21:05:06,519 INFO L432 NwaCegarLoop]: 1225 mSDtfsCounter, 722 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2116 mSolverCounterSat, 696 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 1231 SdHoareTripleChecker+Invalid, 2812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 696 IncrementalHoareTripleChecker+Valid, 2116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-10-23 21:05:06,520 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [722 Valid, 1231 Invalid, 2812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [696 Valid, 2116 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-10-23 21:05:06,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82613 states. [2024-10-23 21:05:07,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82613 to 77356. [2024-10-23 21:05:07,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77356 states, 77355 states have (on average 1.1153642298493955) internal successors, (86279), 77355 states have internal predecessors, (86279), 0 states have call successors, (0), 0 states 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 21:05:07,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77356 states to 77356 states and 86279 transitions. [2024-10-23 21:05:07,240 INFO L78 Accepts]: Start accepts. Automaton has 77356 states and 86279 transitions. Word has length 360 [2024-10-23 21:05:07,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:05:07,240 INFO L471 AbstractCegarLoop]: Abstraction has 77356 states and 86279 transitions. [2024-10-23 21:05:07,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states 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 21:05:07,240 INFO L276 IsEmpty]: Start isEmpty. Operand 77356 states and 86279 transitions. [2024-10-23 21:05:07,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2024-10-23 21:05:07,244 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:05:07,244 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:05:07,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-23 21:05:07,244 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:05:07,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:05:07,245 INFO L85 PathProgramCache]: Analyzing trace with hash 33760425, now seen corresponding path program 1 times [2024-10-23 21:05:07,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:05:07,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35626257] [2024-10-23 21:05:07,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:05:07,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:05:07,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:05:07,591 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2024-10-23 21:05:07,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:05:07,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35626257] [2024-10-23 21:05:07,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35626257] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:05:07,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:05:07,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:05:07,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201122441] [2024-10-23 21:05:07,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:05:07,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:05:07,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:05:07,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:05:07,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:05:07,593 INFO L87 Difference]: Start difference. First operand 77356 states and 86279 transitions. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states 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 21:05:10,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:05:10,173 INFO L93 Difference]: Finished difference Result 165225 states and 183749 transitions. [2024-10-23 21:05:10,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:05:10,174 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 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 381 [2024-10-23 21:05:10,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:05:10,259 INFO L225 Difference]: With dead ends: 165225 [2024-10-23 21:05:10,259 INFO L226 Difference]: Without dead ends: 88621 [2024-10-23 21:05:10,289 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 21:05:10,290 INFO L432 NwaCegarLoop]: 1238 mSDtfsCounter, 763 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2421 mSolverCounterSat, 485 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 1245 SdHoareTripleChecker+Invalid, 2906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 485 IncrementalHoareTripleChecker+Valid, 2421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-10-23 21:05:10,290 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [763 Valid, 1245 Invalid, 2906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [485 Valid, 2421 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-10-23 21:05:10,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88621 states. [2024-10-23 21:05:11,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88621 to 85617. [2024-10-23 21:05:11,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85617 states, 85616 states have (on average 1.0999696318445151) internal successors, (94175), 85616 states have internal predecessors, (94175), 0 states have call successors, (0), 0 states 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 21:05:11,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85617 states to 85617 states and 94175 transitions. [2024-10-23 21:05:11,186 INFO L78 Accepts]: Start accepts. Automaton has 85617 states and 94175 transitions. Word has length 381 [2024-10-23 21:05:11,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:05:11,187 INFO L471 AbstractCegarLoop]: Abstraction has 85617 states and 94175 transitions. [2024-10-23 21:05:11,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states 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 21:05:11,187 INFO L276 IsEmpty]: Start isEmpty. Operand 85617 states and 94175 transitions. [2024-10-23 21:05:11,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2024-10-23 21:05:11,194 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:05:11,194 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:05:11,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-23 21:05:11,195 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:05:11,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:05:11,195 INFO L85 PathProgramCache]: Analyzing trace with hash -700100825, now seen corresponding path program 1 times [2024-10-23 21:05:11,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:05:11,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198720468] [2024-10-23 21:05:11,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:05:11,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:05:11,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:05:11,676 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2024-10-23 21:05:11,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:05:11,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198720468] [2024-10-23 21:05:11,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198720468] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:05:11,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:05:11,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:05:11,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45957101] [2024-10-23 21:05:11,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:05:11,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:05:11,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:05:11,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:05:11,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:05:11,679 INFO L87 Difference]: Start difference. First operand 85617 states and 94175 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 21:05:14,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:05:14,014 INFO L93 Difference]: Finished difference Result 170482 states and 187593 transitions. [2024-10-23 21:05:14,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:05:14,014 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 457 [2024-10-23 21:05:14,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:05:14,097 INFO L225 Difference]: With dead ends: 170482 [2024-10-23 21:05:14,097 INFO L226 Difference]: Without dead ends: 85617 [2024-10-23 21:05:14,119 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 21:05:14,120 INFO L432 NwaCegarLoop]: 399 mSDtfsCounter, 794 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2213 mSolverCounterSat, 496 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 2709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 496 IncrementalHoareTripleChecker+Valid, 2213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-10-23 21:05:14,120 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [794 Valid, 406 Invalid, 2709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [496 Valid, 2213 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-10-23 21:05:14,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85617 states. [2024-10-23 21:05:14,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85617 to 83364. [2024-10-23 21:05:14,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83364 states, 83363 states have (on average 1.0677518803306023) internal successors, (89011), 83363 states have internal predecessors, (89011), 0 states have call successors, (0), 0 states 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 21:05:14,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83364 states to 83364 states and 89011 transitions. [2024-10-23 21:05:14,990 INFO L78 Accepts]: Start accepts. Automaton has 83364 states and 89011 transitions. Word has length 457 [2024-10-23 21:05:14,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:05:14,991 INFO L471 AbstractCegarLoop]: Abstraction has 83364 states and 89011 transitions. [2024-10-23 21:05:14,991 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 21:05:14,991 INFO L276 IsEmpty]: Start isEmpty. Operand 83364 states and 89011 transitions. [2024-10-23 21:05:15,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2024-10-23 21:05:15,005 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:05:15,006 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 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 21:05:15,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-23 21:05:15,006 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:05:15,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:05:15,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1880921259, now seen corresponding path program 1 times [2024-10-23 21:05:15,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:05:15,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140660855] [2024-10-23 21:05:15,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:05:15,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:05:15,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:05:15,946 INFO L134 CoverageAnalysis]: Checked inductivity of 698 backedges. 448 proven. 229 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-10-23 21:05:15,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:05:15,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140660855] [2024-10-23 21:05:15,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140660855] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:05:15,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334441895] [2024-10-23 21:05:15,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:05:15,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:05:15,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:05:15,949 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 21:05:15,950 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 21:05:16,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:05:16,096 INFO L255 TraceCheckSpWp]: Trace formula consists of 677 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 21:05:16,107 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:05:16,258 INFO L134 CoverageAnalysis]: Checked inductivity of 698 backedges. 385 proven. 0 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2024-10-23 21:05:16,258 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:05:16,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334441895] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:05:16,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:05:16,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-10-23 21:05:16,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619466451] [2024-10-23 21:05:16,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:05:16,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:05:16,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:05:16,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:05:16,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-23 21:05:16,260 INFO L87 Difference]: Start difference. First operand 83364 states and 89011 transitions. Second operand has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states 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 21:05:18,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:05:18,591 INFO L93 Difference]: Finished difference Result 187004 states and 201028 transitions. [2024-10-23 21:05:18,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:05:18,591 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 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 524 [2024-10-23 21:05:18,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:05:18,698 INFO L225 Difference]: With dead ends: 187004 [2024-10-23 21:05:18,698 INFO L226 Difference]: Without dead ends: 104392 [2024-10-23 21:05:18,746 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 523 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-23 21:05:18,747 INFO L432 NwaCegarLoop]: 1381 mSDtfsCounter, 649 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2141 mSolverCounterSat, 589 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 1388 SdHoareTripleChecker+Invalid, 2730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 589 IncrementalHoareTripleChecker+Valid, 2141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-10-23 21:05:18,747 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [649 Valid, 1388 Invalid, 2730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [589 Valid, 2141 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-10-23 21:05:18,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104392 states. [2024-10-23 21:05:19,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104392 to 93127. [2024-10-23 21:05:19,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93127 states, 93126 states have (on average 1.0624744969181539) internal successors, (98944), 93126 states have internal predecessors, (98944), 0 states have call successors, (0), 0 states 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 21:05:19,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93127 states to 93127 states and 98944 transitions. [2024-10-23 21:05:19,880 INFO L78 Accepts]: Start accepts. Automaton has 93127 states and 98944 transitions. Word has length 524 [2024-10-23 21:05:19,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:05:19,881 INFO L471 AbstractCegarLoop]: Abstraction has 93127 states and 98944 transitions. [2024-10-23 21:05:19,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states 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 21:05:19,881 INFO L276 IsEmpty]: Start isEmpty. Operand 93127 states and 98944 transitions. [2024-10-23 21:05:19,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 601 [2024-10-23 21:05:19,904 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:05:19,904 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:05:19,920 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 21:05:20,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-23 21:05:20,105 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:05:20,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:05:20,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1004902593, now seen corresponding path program 1 times [2024-10-23 21:05:20,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:05:20,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143530730] [2024-10-23 21:05:20,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:05:20,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:05:20,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:05:20,556 INFO L134 CoverageAnalysis]: Checked inductivity of 862 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 779 trivial. 0 not checked. [2024-10-23 21:05:20,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:05:20,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143530730] [2024-10-23 21:05:20,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143530730] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:05:20,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:05:20,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:05:20,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114467971] [2024-10-23 21:05:20,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:05:20,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:05:20,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:05:20,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:05:20,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:05:20,558 INFO L87 Difference]: Start difference. First operand 93127 states and 98944 transitions. Second operand has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states 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 21:05:23,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:05:23,031 INFO L93 Difference]: Finished difference Result 202775 states and 215854 transitions. [2024-10-23 21:05:23,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:05:23,031 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 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 600 [2024-10-23 21:05:23,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:05:23,150 INFO L225 Difference]: With dead ends: 202775 [2024-10-23 21:05:23,150 INFO L226 Difference]: Without dead ends: 110400 [2024-10-23 21:05:23,198 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 21:05:23,199 INFO L432 NwaCegarLoop]: 1107 mSDtfsCounter, 851 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2183 mSolverCounterSat, 439 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 1114 SdHoareTripleChecker+Invalid, 2622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 439 IncrementalHoareTripleChecker+Valid, 2183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-10-23 21:05:23,199 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [851 Valid, 1114 Invalid, 2622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [439 Valid, 2183 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-10-23 21:05:23,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110400 states. [2024-10-23 21:05:24,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110400 to 108898. [2024-10-23 21:05:24,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108898 states, 108897 states have (on average 1.0576783566122114) internal successors, (115178), 108897 states have internal predecessors, (115178), 0 states have call successors, (0), 0 states 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 21:05:24,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108898 states to 108898 states and 115178 transitions. [2024-10-23 21:05:24,509 INFO L78 Accepts]: Start accepts. Automaton has 108898 states and 115178 transitions. Word has length 600 [2024-10-23 21:05:24,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:05:24,510 INFO L471 AbstractCegarLoop]: Abstraction has 108898 states and 115178 transitions. [2024-10-23 21:05:24,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states 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 21:05:24,510 INFO L276 IsEmpty]: Start isEmpty. Operand 108898 states and 115178 transitions. [2024-10-23 21:05:24,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 927 [2024-10-23 21:05:24,566 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:05:24,566 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:05:24,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-23 21:05:24,566 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:05:24,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:05:24,567 INFO L85 PathProgramCache]: Analyzing trace with hash 923947661, now seen corresponding path program 1 times [2024-10-23 21:05:24,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:05:24,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480359311] [2024-10-23 21:05:24,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:05:24,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:05:24,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:05:27,229 INFO L134 CoverageAnalysis]: Checked inductivity of 894 backedges. 811 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:05:27,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:05:27,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480359311] [2024-10-23 21:05:27,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480359311] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:05:27,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007766939] [2024-10-23 21:05:27,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:05:27,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:05:27,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:05:27,231 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 21:05:27,232 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 21:05:27,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:05:27,425 INFO L255 TraceCheckSpWp]: Trace formula consists of 1087 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-23 21:05:27,433 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:05:29,732 INFO L134 CoverageAnalysis]: Checked inductivity of 894 backedges. 605 proven. 173 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2024-10-23 21:05:29,733 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 21:05:36,787 INFO L134 CoverageAnalysis]: Checked inductivity of 894 backedges. 517 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2024-10-23 21:05:36,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007766939] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 21:05:36,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 21:05:36,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 5] total 12 [2024-10-23 21:05:36,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509389492] [2024-10-23 21:05:36,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:05:36,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:05:36,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:05:36,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:05:36,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-10-23 21:05:36,790 INFO L87 Difference]: Start difference. First operand 108898 states and 115178 transitions. Second operand has 4 states, 4 states have (on average 166.75) internal successors, (667), 4 states have internal predecessors, (667), 0 states have call successors, (0), 0 states 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 21:05:40,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:05:40,389 INFO L93 Difference]: Finished difference Result 243903 states and 257777 transitions. [2024-10-23 21:05:40,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-23 21:05:40,389 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 166.75) internal successors, (667), 4 states have internal predecessors, (667), 0 states have call successors, (0), 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 926 [2024-10-23 21:05:40,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:05:40,523 INFO L225 Difference]: With dead ends: 243903 [2024-10-23 21:05:40,523 INFO L226 Difference]: Without dead ends: 135005 [2024-10-23 21:05:40,583 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1859 GetRequests, 1848 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-10-23 21:05:40,584 INFO L432 NwaCegarLoop]: 1013 mSDtfsCounter, 809 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 4311 mSolverCounterSat, 490 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 1031 SdHoareTripleChecker+Invalid, 4801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 490 IncrementalHoareTripleChecker+Valid, 4311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-10-23 21:05:40,584 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [809 Valid, 1031 Invalid, 4801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [490 Valid, 4311 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-10-23 21:05:40,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135005 states. [2024-10-23 21:05:41,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135005 to 109649. [2024-10-23 21:05:41,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109649 states, 109648 states have (on average 1.0572833065810594) internal successors, (115929), 109648 states have internal predecessors, (115929), 0 states have call successors, (0), 0 states 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 21:05:41,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109649 states to 109649 states and 115929 transitions. [2024-10-23 21:05:41,710 INFO L78 Accepts]: Start accepts. Automaton has 109649 states and 115929 transitions. Word has length 926 [2024-10-23 21:05:41,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:05:41,711 INFO L471 AbstractCegarLoop]: Abstraction has 109649 states and 115929 transitions. [2024-10-23 21:05:41,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 166.75) internal successors, (667), 4 states have internal predecessors, (667), 0 states have call successors, (0), 0 states 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 21:05:41,712 INFO L276 IsEmpty]: Start isEmpty. Operand 109649 states and 115929 transitions. [2024-10-23 21:05:41,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 983 [2024-10-23 21:05:41,772 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:05:41,772 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:05:41,785 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 21:05:41,973 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,SelfDestructingSolverStorable16 [2024-10-23 21:05:41,973 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:05:41,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:05:41,974 INFO L85 PathProgramCache]: Analyzing trace with hash -2140548400, now seen corresponding path program 1 times [2024-10-23 21:05:41,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:05:41,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037511037] [2024-10-23 21:05:41,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:05:41,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:05:42,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:05:42,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1121 backedges. 710 proven. 0 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2024-10-23 21:05:42,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:05:42,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037511037] [2024-10-23 21:05:42,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037511037] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:05:42,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:05:42,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:05:42,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135067431] [2024-10-23 21:05:42,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:05:42,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:05:42,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:05:42,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:05:42,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:05:42,974 INFO L87 Difference]: Start difference. First operand 109649 states and 115929 transitions. Second operand has 3 states, 3 states have (on average 231.0) internal successors, (693), 3 states have internal predecessors, (693), 0 states have call successors, (0), 0 states 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 21:05:46,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:05:46,061 INFO L93 Difference]: Finished difference Result 263606 states and 279144 transitions. [2024-10-23 21:05:46,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:05:46,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 231.0) internal successors, (693), 3 states have internal predecessors, (693), 0 states have call successors, (0), 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 982 [2024-10-23 21:05:46,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:05:46,213 INFO L225 Difference]: With dead ends: 263606 [2024-10-23 21:05:46,214 INFO L226 Difference]: Without dead ends: 154709 [2024-10-23 21:05:46,241 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 21:05:46,242 INFO L432 NwaCegarLoop]: 568 mSDtfsCounter, 713 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2324 mSolverCounterSat, 571 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 2895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 571 IncrementalHoareTripleChecker+Valid, 2324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-10-23 21:05:46,242 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [713 Valid, 575 Invalid, 2895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [571 Valid, 2324 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-10-23 21:05:46,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154709 states. [2024-10-23 21:05:47,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154709 to 147950. [2024-10-23 21:05:47,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147950 states, 147949 states have (on average 1.0539983372648682) internal successors, (155938), 147949 states have internal predecessors, (155938), 0 states have call successors, (0), 0 states 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 21:05:47,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147950 states to 147950 states and 155938 transitions. [2024-10-23 21:05:47,769 INFO L78 Accepts]: Start accepts. Automaton has 147950 states and 155938 transitions. Word has length 982 [2024-10-23 21:05:47,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:05:47,770 INFO L471 AbstractCegarLoop]: Abstraction has 147950 states and 155938 transitions. [2024-10-23 21:05:47,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 231.0) internal successors, (693), 3 states have internal predecessors, (693), 0 states have call successors, (0), 0 states 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 21:05:47,770 INFO L276 IsEmpty]: Start isEmpty. Operand 147950 states and 155938 transitions. [2024-10-23 21:05:47,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 987 [2024-10-23 21:05:47,816 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:05:47,816 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:05:47,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-23 21:05:47,817 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:05:47,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:05:47,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1632698275, now seen corresponding path program 1 times [2024-10-23 21:05:47,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:05:47,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841946887] [2024-10-23 21:05:47,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:05:47,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:05:47,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:05:49,229 INFO L134 CoverageAnalysis]: Checked inductivity of 894 backedges. 517 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2024-10-23 21:05:49,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:05:49,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841946887] [2024-10-23 21:05:49,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841946887] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:05:49,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:05:49,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-23 21:05:49,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106129371] [2024-10-23 21:05:49,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:05:49,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:05:49,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:05:49,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:05:49,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:05:49,231 INFO L87 Difference]: Start difference. First operand 147950 states and 155938 transitions. Second operand has 4 states, 4 states have (on average 181.75) internal successors, (727), 4 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)