./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem17_label57.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../sv-benchmarks/c/eca-rers2012/Problem17_label57.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 0e82c46cc7c6a1ae6528ac072c5cfd2ae759a81ebaffa85f079f32af9f51d4a1 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 10:53:33,959 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 10:53:34,026 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 10:53:34,032 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 10:53:34,033 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 10:53:34,063 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 10:53:34,064 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 10:53:34,065 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 10:53:34,065 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 10:53:34,066 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 10:53:34,066 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 10:53:34,066 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 10:53:34,067 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 10:53:34,068 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 10:53:34,070 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 10:53:34,070 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 10:53:34,070 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 10:53:34,071 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 10:53:34,071 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 10:53:34,074 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 10:53:34,074 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 10:53:34,075 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 10:53:34,075 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 10:53:34,075 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 10:53:34,075 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 10:53:34,076 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 10:53:34,076 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 10:53:34,076 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 10:53:34,076 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 10:53:34,077 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 10:53:34,077 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 10:53:34,077 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 10:53:34,078 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 10:53:34,078 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 10:53:34,083 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 10:53:34,083 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 10:53:34,083 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 10:53:34,084 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 10:53:34,084 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 10:53:34,084 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 10:53:34,084 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 10:53:34,085 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 10:53:34,085 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e82c46cc7c6a1ae6528ac072c5cfd2ae759a81ebaffa85f079f32af9f51d4a1 [2024-11-18 10:53:34,371 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 10:53:34,395 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 10:53:34,398 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 10:53:34,399 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 10:53:34,399 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 10:53:34,401 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem17_label57.c [2024-11-18 10:53:35,823 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 10:53:36,208 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 10:53:36,208 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label57.c [2024-11-18 10:53:36,235 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8a9f9db7/0ac5f955c6ef4925b257727cad5776b5/FLAG87669c52f [2024-11-18 10:53:36,253 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8a9f9db7/0ac5f955c6ef4925b257727cad5776b5 [2024-11-18 10:53:36,256 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 10:53:36,258 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 10:53:36,259 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 10:53:36,259 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 10:53:36,264 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 10:53:36,265 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:53:36" (1/1) ... [2024-11-18 10:53:36,267 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59f8b753 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:53:36, skipping insertion in model container [2024-11-18 10:53:36,267 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:53:36" (1/1) ... [2024-11-18 10:53:36,349 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 10:53:36,591 WARN L250 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/Problem17_label57.c[2672,2685] [2024-11-18 10:53:37,113 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 10:53:37,123 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 10:53:37,138 WARN L250 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/Problem17_label57.c[2672,2685] [2024-11-18 10:53:37,397 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 10:53:37,418 INFO L204 MainTranslator]: Completed translation [2024-11-18 10:53:37,419 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:53:37 WrapperNode [2024-11-18 10:53:37,419 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 10:53:37,420 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 10:53:37,420 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 10:53:37,420 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 10:53:37,426 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:53:37" (1/1) ... [2024-11-18 10:53:37,474 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:53:37" (1/1) ... [2024-11-18 10:53:37,801 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2613 [2024-11-18 10:53:37,801 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 10:53:37,802 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 10:53:37,802 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 10:53:37,802 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 10:53:37,814 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:53:37" (1/1) ... [2024-11-18 10:53:37,814 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:53:37" (1/1) ... [2024-11-18 10:53:37,880 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:53:37" (1/1) ... [2024-11-18 10:53:38,062 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]. [2024-11-18 10:53:38,063 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:53:37" (1/1) ... [2024-11-18 10:53:38,063 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:53:37" (1/1) ... [2024-11-18 10:53:38,190 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:53:37" (1/1) ... [2024-11-18 10:53:38,215 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:53:37" (1/1) ... [2024-11-18 10:53:38,266 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:53:37" (1/1) ... [2024-11-18 10:53:38,282 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:53:37" (1/1) ... [2024-11-18 10:53:38,318 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 10:53:38,320 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 10:53:38,320 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 10:53:38,321 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 10:53:38,321 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:53:37" (1/1) ... [2024-11-18 10:53:38,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 10:53:38,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:53:38,357 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) [2024-11-18 10:53:38,360 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 [2024-11-18 10:53:38,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 10:53:38,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 10:53:38,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 10:53:38,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 10:53:38,506 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 10:53:38,508 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 10:53:42,146 INFO L? ?]: Removed 372 outVars from TransFormulas that were not future-live. [2024-11-18 10:53:42,147 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 10:53:42,188 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 10:53:42,188 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 10:53:42,189 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:53:42 BoogieIcfgContainer [2024-11-18 10:53:42,190 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 10:53:42,193 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 10:53:42,193 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 10:53:42,197 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 10:53:42,197 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 10:53:36" (1/3) ... [2024-11-18 10:53:42,198 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fb1aa49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:53:42, skipping insertion in model container [2024-11-18 10:53:42,198 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:53:37" (2/3) ... [2024-11-18 10:53:42,198 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fb1aa49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:53:42, skipping insertion in model container [2024-11-18 10:53:42,198 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:53:42" (3/3) ... [2024-11-18 10:53:42,201 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label57.c [2024-11-18 10:53:42,218 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 10:53:42,218 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 10:53:42,313 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 10:53:42,321 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;@76bd293d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 10:53:42,321 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 10:53:42,328 INFO L276 IsEmpty]: Start isEmpty. Operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:53:42,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-18 10:53:42,337 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:53:42,338 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:53:42,339 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:53:42,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:53:42,346 INFO L85 PathProgramCache]: Analyzing trace with hash 156847385, now seen corresponding path program 1 times [2024-11-18 10:53:42,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:53:42,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660758080] [2024-11-18 10:53:42,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:53:42,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:53:42,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:53:42,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:53:42,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:53:42,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660758080] [2024-11-18 10:53:42,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660758080] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:53:42,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:53:42,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 10:53:42,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968223068] [2024-11-18 10:53:42,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:53:42,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:53:42,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:53:42,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:53:42,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:53:42,699 INFO L87 Difference]: Start difference. First operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 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 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:53:45,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:53:45,292 INFO L93 Difference]: Finished difference Result 1667 states and 3061 transitions. [2024-11-18 10:53:45,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:53:45,294 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2024-11-18 10:53:45,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:53:45,330 INFO L225 Difference]: With dead ends: 1667 [2024-11-18 10:53:45,330 INFO L226 Difference]: Without dead ends: 998 [2024-11-18 10:53:45,337 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 [2024-11-18 10:53:45,341 INFO L432 NwaCegarLoop]: 214 mSDtfsCounter, 528 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1566 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 528 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 1962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 1566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-18 10:53:45,342 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [528 Valid, 276 Invalid, 1962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [396 Valid, 1566 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-18 10:53:45,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2024-11-18 10:53:45,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 982. [2024-11-18 10:53:45,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 982 states, 981 states have (on average 1.707441386340469) internal successors, (1675), 981 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:53:45,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 982 states to 982 states and 1675 transitions. [2024-11-18 10:53:45,428 INFO L78 Accepts]: Start accepts. Automaton has 982 states and 1675 transitions. Word has length 17 [2024-11-18 10:53:45,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:53:45,428 INFO L471 AbstractCegarLoop]: Abstraction has 982 states and 1675 transitions. [2024-11-18 10:53:45,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:53:45,429 INFO L276 IsEmpty]: Start isEmpty. Operand 982 states and 1675 transitions. [2024-11-18 10:53:45,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-18 10:53:45,432 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:53:45,432 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 10:53:45,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 10:53:45,433 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:53:45,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:53:45,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1420614467, now seen corresponding path program 1 times [2024-11-18 10:53:45,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:53:45,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115221839] [2024-11-18 10:53:45,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:53:45,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:53:45,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:53:45,702 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:53:45,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:53:45,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115221839] [2024-11-18 10:53:45,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115221839] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:53:45,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:53:45,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 10:53:45,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209224418] [2024-11-18 10:53:45,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:53:45,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:53:45,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:53:45,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:53:45,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:53:45,708 INFO L87 Difference]: Start difference. First operand 982 states and 1675 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:53:47,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:53:47,714 INFO L93 Difference]: Finished difference Result 2843 states and 4882 transitions. [2024-11-18 10:53:47,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:53:47,715 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2024-11-18 10:53:47,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:53:47,723 INFO L225 Difference]: With dead ends: 2843 [2024-11-18 10:53:47,723 INFO L226 Difference]: Without dead ends: 1863 [2024-11-18 10:53:47,725 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 [2024-11-18 10:53:47,726 INFO L432 NwaCegarLoop]: 422 mSDtfsCounter, 409 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1341 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 1665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 1341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-18 10:53:47,727 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 495 Invalid, 1665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 1341 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-18 10:53:47,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1863 states. [2024-11-18 10:53:47,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1863 to 1857. [2024-11-18 10:53:47,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1857 states, 1856 states have (on average 1.4552801724137931) internal successors, (2701), 1856 states have internal predecessors, (2701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:53:47,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1857 states to 1857 states and 2701 transitions. [2024-11-18 10:53:47,779 INFO L78 Accepts]: Start accepts. Automaton has 1857 states and 2701 transitions. Word has length 82 [2024-11-18 10:53:47,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:53:47,780 INFO L471 AbstractCegarLoop]: Abstraction has 1857 states and 2701 transitions. [2024-11-18 10:53:47,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:53:47,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1857 states and 2701 transitions. [2024-11-18 10:53:47,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-18 10:53:47,785 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:53:47,785 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 10:53:47,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 10:53:47,786 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:53:47,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:53:47,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1820580012, now seen corresponding path program 1 times [2024-11-18 10:53:47,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:53:47,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972359984] [2024-11-18 10:53:47,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:53:47,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:53:47,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:53:47,936 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:53:47,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:53:47,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972359984] [2024-11-18 10:53:47,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972359984] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:53:47,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:53:47,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 10:53:47,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598142569] [2024-11-18 10:53:47,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:53:47,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:53:47,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:53:47,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:53:47,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:53:47,939 INFO L87 Difference]: Start difference. First operand 1857 states and 2701 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:53:50,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:53:50,058 INFO L93 Difference]: Finished difference Result 5425 states and 7895 transitions. [2024-11-18 10:53:50,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:53:50,059 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2024-11-18 10:53:50,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:53:50,071 INFO L225 Difference]: With dead ends: 5425 [2024-11-18 10:53:50,071 INFO L226 Difference]: Without dead ends: 3570 [2024-11-18 10:53:50,074 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 [2024-11-18 10:53:50,075 INFO L432 NwaCegarLoop]: 516 mSDtfsCounter, 387 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-18 10:53:50,076 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 591 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-18 10:53:50,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3570 states. [2024-11-18 10:53:50,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3570 to 2714. [2024-11-18 10:53:50,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2714 states, 2713 states have (on average 1.315886472539624) internal successors, (3570), 2713 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:53:50,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2714 states to 2714 states and 3570 transitions. [2024-11-18 10:53:50,128 INFO L78 Accepts]: Start accepts. Automaton has 2714 states and 3570 transitions. Word has length 88 [2024-11-18 10:53:50,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:53:50,128 INFO L471 AbstractCegarLoop]: Abstraction has 2714 states and 3570 transitions. [2024-11-18 10:53:50,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:53:50,129 INFO L276 IsEmpty]: Start isEmpty. Operand 2714 states and 3570 transitions. [2024-11-18 10:53:50,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-11-18 10:53:50,133 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:53:50,133 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 10:53:50,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 10:53:50,134 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:53:50,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:53:50,134 INFO L85 PathProgramCache]: Analyzing trace with hash -872972308, now seen corresponding path program 1 times [2024-11-18 10:53:50,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:53:50,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967882613] [2024-11-18 10:53:50,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:53:50,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:53:50,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:53:50,662 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:53:50,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:53:50,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967882613] [2024-11-18 10:53:50,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967882613] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:53:50,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:53:50,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 10:53:50,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861787042] [2024-11-18 10:53:50,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:53:50,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 10:53:50,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:53:50,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 10:53:50,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 10:53:50,668 INFO L87 Difference]: Start difference. First operand 2714 states and 3570 transitions. Second operand has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 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) [2024-11-18 10:53:52,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:53:52,996 INFO L93 Difference]: Finished difference Result 7147 states and 9641 transitions. [2024-11-18 10:53:52,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:53:52,996 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 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 165 [2024-11-18 10:53:52,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:53:53,014 INFO L225 Difference]: With dead ends: 7147 [2024-11-18 10:53:53,015 INFO L226 Difference]: Without dead ends: 4435 [2024-11-18 10:53:53,022 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 10:53:53,025 INFO L432 NwaCegarLoop]: 765 mSDtfsCounter, 1651 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 1789 mSolverCounterSat, 956 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1651 SdHoareTripleChecker+Valid, 863 SdHoareTripleChecker+Invalid, 2745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 956 IncrementalHoareTripleChecker+Valid, 1789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-18 10:53:53,028 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1651 Valid, 863 Invalid, 2745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [956 Valid, 1789 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-18 10:53:53,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4435 states. [2024-11-18 10:53:53,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4435 to 4424. [2024-11-18 10:53:53,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4424 states, 4423 states have (on average 1.2912050644359032) internal successors, (5711), 4423 states have internal predecessors, (5711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:53:53,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4424 states to 4424 states and 5711 transitions. [2024-11-18 10:53:53,117 INFO L78 Accepts]: Start accepts. Automaton has 4424 states and 5711 transitions. Word has length 165 [2024-11-18 10:53:53,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:53:53,118 INFO L471 AbstractCegarLoop]: Abstraction has 4424 states and 5711 transitions. [2024-11-18 10:53:53,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 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) [2024-11-18 10:53:53,119 INFO L276 IsEmpty]: Start isEmpty. Operand 4424 states and 5711 transitions. [2024-11-18 10:53:53,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-18 10:53:53,125 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:53:53,126 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:53:53,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 10:53:53,126 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:53:53,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:53:53,127 INFO L85 PathProgramCache]: Analyzing trace with hash 259839131, now seen corresponding path program 1 times [2024-11-18 10:53:53,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:53:53,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700816385] [2024-11-18 10:53:53,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:53:53,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:53:53,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:53:53,491 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 29 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:53:53,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:53:53,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700816385] [2024-11-18 10:53:53,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700816385] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:53:53,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759859447] [2024-11-18 10:53:53,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:53:53,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:53:53,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:53:53,498 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) [2024-11-18 10:53:53,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 10:53:53,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:53:53,602 INFO L255 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 10:53:53,609 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:53:53,848 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 29 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:53:53,848 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 10:53:54,192 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:53:54,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759859447] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-18 10:53:54,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-18 10:53:54,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-11-18 10:53:54,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889023956] [2024-11-18 10:53:54,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:53:54,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 10:53:54,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:53:54,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 10:53:54,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-18 10:53:54,197 INFO L87 Difference]: Start difference. First operand 4424 states and 5711 transitions. Second operand has 4 states, 4 states have (on average 42.75) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:53:57,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:53:57,447 INFO L93 Difference]: Finished difference Result 13992 states and 18566 transitions. [2024-11-18 10:53:57,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:53:57,448 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 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 171 [2024-11-18 10:53:57,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:53:57,476 INFO L225 Difference]: With dead ends: 13992 [2024-11-18 10:53:57,476 INFO L226 Difference]: Without dead ends: 8693 [2024-11-18 10:53:57,485 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-18 10:53:57,486 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 1122 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 2296 mSolverCounterSat, 1396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1122 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 3692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1396 IncrementalHoareTripleChecker+Valid, 2296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-18 10:53:57,486 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1122 Valid, 152 Invalid, 3692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1396 Valid, 2296 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-18 10:53:57,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8693 states. [2024-11-18 10:53:57,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8693 to 8688. [2024-11-18 10:53:57,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8688 states, 8687 states have (on average 1.2229768619776678) internal successors, (10624), 8687 states have internal predecessors, (10624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:53:57,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8688 states to 8688 states and 10624 transitions. [2024-11-18 10:53:57,647 INFO L78 Accepts]: Start accepts. Automaton has 8688 states and 10624 transitions. Word has length 171 [2024-11-18 10:53:57,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:53:57,648 INFO L471 AbstractCegarLoop]: Abstraction has 8688 states and 10624 transitions. [2024-11-18 10:53:57,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:53:57,649 INFO L276 IsEmpty]: Start isEmpty. Operand 8688 states and 10624 transitions. [2024-11-18 10:53:57,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2024-11-18 10:53:57,653 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:53:57,653 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:53:57,672 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 10:53:57,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:53:57,854 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:53:57,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:53:57,855 INFO L85 PathProgramCache]: Analyzing trace with hash -931351970, now seen corresponding path program 1 times [2024-11-18 10:53:57,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:53:57,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041545382] [2024-11-18 10:53:57,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:53:57,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:53:57,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:53:58,339 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 44 proven. 214 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:53:58,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:53:58,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041545382] [2024-11-18 10:53:58,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041545382] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:53:58,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944827835] [2024-11-18 10:53:58,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:53:58,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:53:58,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:53:58,347 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) [2024-11-18 10:53:58,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 10:53:58,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:53:58,467 INFO L255 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 10:53:58,475 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:53:58,682 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 170 proven. 73 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-18 10:53:58,684 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 10:53:58,959 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 243 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-18 10:53:58,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944827835] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-18 10:53:58,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-18 10:53:58,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 3] total 6 [2024-11-18 10:53:58,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087900944] [2024-11-18 10:53:58,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:53:58,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 10:53:58,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:53:58,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 10:53:58,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-18 10:53:58,962 INFO L87 Difference]: Start difference. First operand 8688 states and 10624 transitions. Second operand has 4 states, 4 states have (on average 57.75) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:54:01,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:54:01,383 INFO L93 Difference]: Finished difference Result 24222 states and 29723 transitions. [2024-11-18 10:54:01,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:54:01,384 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 245 [2024-11-18 10:54:01,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:54:01,430 INFO L225 Difference]: With dead ends: 24222 [2024-11-18 10:54:01,430 INFO L226 Difference]: Without dead ends: 15536 [2024-11-18 10:54:01,443 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 487 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-18 10:54:01,445 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 878 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 2269 mSolverCounterSat, 603 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 878 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 2872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 603 IncrementalHoareTripleChecker+Valid, 2269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-18 10:54:01,445 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [878 Valid, 178 Invalid, 2872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [603 Valid, 2269 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-18 10:54:01,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15536 states. [2024-11-18 10:54:01,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15536 to 15530. [2024-11-18 10:54:01,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15530 states, 15529 states have (on average 1.2101229956854918) internal successors, (18792), 15529 states have internal predecessors, (18792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:54:01,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15530 states to 15530 states and 18792 transitions. [2024-11-18 10:54:01,802 INFO L78 Accepts]: Start accepts. Automaton has 15530 states and 18792 transitions. Word has length 245 [2024-11-18 10:54:01,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:54:01,803 INFO L471 AbstractCegarLoop]: Abstraction has 15530 states and 18792 transitions. [2024-11-18 10:54:01,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:54:01,803 INFO L276 IsEmpty]: Start isEmpty. Operand 15530 states and 18792 transitions. [2024-11-18 10:54:01,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2024-11-18 10:54:01,820 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:54:01,820 INFO L215 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 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] [2024-11-18 10:54:01,837 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 10:54:02,020 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,SelfDestructingSolverStorable5 [2024-11-18 10:54:02,021 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:54:02,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:54:02,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1067126678, now seen corresponding path program 1 times [2024-11-18 10:54:02,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:54:02,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379822343] [2024-11-18 10:54:02,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:54:02,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:54:02,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:54:02,480 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 403 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-11-18 10:54:02,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:54:02,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379822343] [2024-11-18 10:54:02,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379822343] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:54:02,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:54:02,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:54:02,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587167950] [2024-11-18 10:54:02,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:54:02,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:54:02,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:54:02,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:54:02,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:54:02,484 INFO L87 Difference]: Start difference. First operand 15530 states and 18792 transitions. Second operand has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:54:04,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:54:04,167 INFO L93 Difference]: Finished difference Result 40443 states and 49307 transitions. [2024-11-18 10:54:04,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:54:04,168 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 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 348 [2024-11-18 10:54:04,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:54:04,219 INFO L225 Difference]: With dead ends: 40443 [2024-11-18 10:54:04,219 INFO L226 Difference]: Without dead ends: 24913 [2024-11-18 10:54:04,241 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:54:04,242 INFO L432 NwaCegarLoop]: 297 mSDtfsCounter, 434 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 1234 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 1449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 1234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-18 10:54:04,242 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 351 Invalid, 1449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 1234 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-18 10:54:04,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24913 states. [2024-11-18 10:54:04,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24913 to 22343. [2024-11-18 10:54:04,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22343 states, 22342 states have (on average 1.1988183689911378) internal successors, (26784), 22342 states have internal predecessors, (26784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:54:04,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22343 states to 22343 states and 26784 transitions. [2024-11-18 10:54:04,589 INFO L78 Accepts]: Start accepts. Automaton has 22343 states and 26784 transitions. Word has length 348 [2024-11-18 10:54:04,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:54:04,590 INFO L471 AbstractCegarLoop]: Abstraction has 22343 states and 26784 transitions. [2024-11-18 10:54:04,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:54:04,590 INFO L276 IsEmpty]: Start isEmpty. Operand 22343 states and 26784 transitions. [2024-11-18 10:54:04,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2024-11-18 10:54:04,596 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:54:04,596 INFO L215 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 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] [2024-11-18 10:54:04,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 10:54:04,597 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:54:04,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:54:04,597 INFO L85 PathProgramCache]: Analyzing trace with hash -359571855, now seen corresponding path program 1 times [2024-11-18 10:54:04,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:54:04,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155354854] [2024-11-18 10:54:04,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:54:04,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:54:04,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:54:04,997 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 403 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-11-18 10:54:04,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:54:04,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155354854] [2024-11-18 10:54:04,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155354854] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:54:04,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:54:04,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:54:04,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934522394] [2024-11-18 10:54:04,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:54:04,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:54:04,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:54:04,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:54:04,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:54:04,999 INFO L87 Difference]: Start difference. First operand 22343 states and 26784 transitions. Second operand has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:54:06,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:54:06,834 INFO L93 Difference]: Finished difference Result 53677 states and 64570 transitions. [2024-11-18 10:54:06,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:54:06,835 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 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 350 [2024-11-18 10:54:06,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:54:06,895 INFO L225 Difference]: With dead ends: 53677 [2024-11-18 10:54:06,896 INFO L226 Difference]: Without dead ends: 31336 [2024-11-18 10:54:06,926 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 [2024-11-18 10:54:06,928 INFO L432 NwaCegarLoop]: 687 mSDtfsCounter, 428 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1342 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 1526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 1342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-18 10:54:06,928 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [428 Valid, 731 Invalid, 1526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 1342 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-18 10:54:06,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31336 states. [2024-11-18 10:54:07,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31336 to 30027. [2024-11-18 10:54:07,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30027 states, 30026 states have (on average 1.2049224005861587) internal successors, (36179), 30026 states have internal predecessors, (36179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:54:07,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30027 states to 30027 states and 36179 transitions. [2024-11-18 10:54:07,544 INFO L78 Accepts]: Start accepts. Automaton has 30027 states and 36179 transitions. Word has length 350 [2024-11-18 10:54:07,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:54:07,544 INFO L471 AbstractCegarLoop]: Abstraction has 30027 states and 36179 transitions. [2024-11-18 10:54:07,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:54:07,545 INFO L276 IsEmpty]: Start isEmpty. Operand 30027 states and 36179 transitions. [2024-11-18 10:54:07,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2024-11-18 10:54:07,551 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:54:07,551 INFO L215 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:54:07,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 10:54:07,552 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:54:07,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:54:07,554 INFO L85 PathProgramCache]: Analyzing trace with hash -60944868, now seen corresponding path program 1 times [2024-11-18 10:54:07,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:54:07,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616188457] [2024-11-18 10:54:07,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:54:07,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:54:07,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:54:08,036 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 420 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-11-18 10:54:08,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:54:08,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616188457] [2024-11-18 10:54:08,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616188457] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:54:08,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:54:08,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:54:08,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887936183] [2024-11-18 10:54:08,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:54:08,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:54:08,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:54:08,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:54:08,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:54:08,039 INFO L87 Difference]: Start difference. First operand 30027 states and 36179 transitions. Second operand has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:54:09,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:54:09,836 INFO L93 Difference]: Finished difference Result 80910 states and 96296 transitions. [2024-11-18 10:54:09,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:54:09,837 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 351 [2024-11-18 10:54:09,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:54:09,925 INFO L225 Difference]: With dead ends: 80910 [2024-11-18 10:54:09,926 INFO L226 Difference]: Without dead ends: 49601 [2024-11-18 10:54:09,965 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 [2024-11-18 10:54:09,966 INFO L432 NwaCegarLoop]: 586 mSDtfsCounter, 446 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 1179 mSolverCounterSat, 292 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 1471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 292 IncrementalHoareTripleChecker+Valid, 1179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-18 10:54:09,966 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [446 Valid, 625 Invalid, 1471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [292 Valid, 1179 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-18 10:54:10,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49601 states. [2024-11-18 10:54:10,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49601 to 46191. [2024-11-18 10:54:10,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46191 states, 46190 states have (on average 1.166161506819658) internal successors, (53865), 46190 states have internal predecessors, (53865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:54:10,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46191 states to 46191 states and 53865 transitions. [2024-11-18 10:54:10,667 INFO L78 Accepts]: Start accepts. Automaton has 46191 states and 53865 transitions. Word has length 351 [2024-11-18 10:54:10,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:54:10,667 INFO L471 AbstractCegarLoop]: Abstraction has 46191 states and 53865 transitions. [2024-11-18 10:54:10,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:54:10,668 INFO L276 IsEmpty]: Start isEmpty. Operand 46191 states and 53865 transitions. [2024-11-18 10:54:10,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2024-11-18 10:54:10,681 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:54:10,682 INFO L215 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:54:10,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 10:54:10,682 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:54:10,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:54:10,683 INFO L85 PathProgramCache]: Analyzing trace with hash 493747939, now seen corresponding path program 1 times [2024-11-18 10:54:10,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:54:10,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592977598] [2024-11-18 10:54:10,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:54:10,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:54:10,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:54:11,367 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 495 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-18 10:54:11,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:54:11,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592977598] [2024-11-18 10:54:11,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592977598] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:54:11,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:54:11,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 10:54:11,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462435068] [2024-11-18 10:54:11,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:54:11,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 10:54:11,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:54:11,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 10:54:11,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 10:54:11,370 INFO L87 Difference]: Start difference. First operand 46191 states and 53865 transitions. Second operand has 4 states, 4 states have (on average 85.25) internal successors, (341), 4 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:54:13,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:54:13,899 INFO L93 Difference]: Finished difference Result 124790 states and 145084 transitions. [2024-11-18 10:54:13,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:54:13,900 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 85.25) internal successors, (341), 4 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 355 [2024-11-18 10:54:13,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:54:14,004 INFO L225 Difference]: With dead ends: 124790 [2024-11-18 10:54:14,004 INFO L226 Difference]: Without dead ends: 78601 [2024-11-18 10:54:14,052 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 10:54:14,053 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 836 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 2311 mSolverCounterSat, 468 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 836 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 2779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 468 IncrementalHoareTripleChecker+Valid, 2311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-18 10:54:14,053 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [836 Valid, 181 Invalid, 2779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [468 Valid, 2311 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-18 10:54:14,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78601 states. [2024-11-18 10:54:15,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78601 to 75618. [2024-11-18 10:54:15,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75618 states, 75617 states have (on average 1.1590383114908023) internal successors, (87643), 75617 states have internal predecessors, (87643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:54:15,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75618 states to 75618 states and 87643 transitions. [2024-11-18 10:54:15,413 INFO L78 Accepts]: Start accepts. Automaton has 75618 states and 87643 transitions. Word has length 355 [2024-11-18 10:54:15,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:54:15,414 INFO L471 AbstractCegarLoop]: Abstraction has 75618 states and 87643 transitions. [2024-11-18 10:54:15,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.25) internal successors, (341), 4 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:54:15,414 INFO L276 IsEmpty]: Start isEmpty. Operand 75618 states and 87643 transitions. [2024-11-18 10:54:15,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2024-11-18 10:54:15,419 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:54:15,419 INFO L215 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 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] [2024-11-18 10:54:15,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 10:54:15,420 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:54:15,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:54:15,420 INFO L85 PathProgramCache]: Analyzing trace with hash -220930497, now seen corresponding path program 1 times [2024-11-18 10:54:15,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:54:15,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505247003] [2024-11-18 10:54:15,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:54:15,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:54:15,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:54:16,650 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 317 proven. 82 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2024-11-18 10:54:16,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:54:16,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505247003] [2024-11-18 10:54:16,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505247003] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:54:16,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958769290] [2024-11-18 10:54:16,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:54:16,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:54:16,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:54:16,654 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 10:54:16,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 10:54:16,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:54:16,804 INFO L255 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 10:54:16,810 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:54:17,083 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2024-11-18 10:54:17,084 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 10:54:17,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958769290] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:54:17,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 10:54:17,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-18 10:54:17,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742921764] [2024-11-18 10:54:17,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:54:17,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:54:17,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:54:17,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:54:17,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-18 10:54:17,087 INFO L87 Difference]: Start difference. First operand 75618 states and 87643 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:54:19,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:54:19,053 INFO L93 Difference]: Finished difference Result 171699 states and 198294 transitions. [2024-11-18 10:54:19,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:54:19,055 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 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 370 [2024-11-18 10:54:19,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:54:19,169 INFO L225 Difference]: With dead ends: 171699 [2024-11-18 10:54:19,170 INFO L226 Difference]: Without dead ends: 95654 [2024-11-18 10:54:19,204 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-18 10:54:19,205 INFO L432 NwaCegarLoop]: 687 mSDtfsCounter, 478 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1225 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 1381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 1225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-18 10:54:19,205 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 744 Invalid, 1381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 1225 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-18 10:54:19,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95654 states. [2024-11-18 10:54:20,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95654 to 95639. [2024-11-18 10:54:20,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95639 states, 95638 states have (on average 1.126989272046676) internal successors, (107783), 95638 states have internal predecessors, (107783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:54:20,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95639 states to 95639 states and 107783 transitions. [2024-11-18 10:54:20,717 INFO L78 Accepts]: Start accepts. Automaton has 95639 states and 107783 transitions. Word has length 370 [2024-11-18 10:54:20,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:54:20,718 INFO L471 AbstractCegarLoop]: Abstraction has 95639 states and 107783 transitions. [2024-11-18 10:54:20,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:54:20,718 INFO L276 IsEmpty]: Start isEmpty. Operand 95639 states and 107783 transitions. [2024-11-18 10:54:20,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2024-11-18 10:54:20,737 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:54:20,737 INFO L215 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:54:20,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-18 10:54:20,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:54:20,938 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:54:20,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:54:20,939 INFO L85 PathProgramCache]: Analyzing trace with hash -2071414173, now seen corresponding path program 1 times [2024-11-18 10:54:20,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:54:20,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738132086] [2024-11-18 10:54:20,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:54:20,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:54:21,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:54:21,498 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 268 proven. 0 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-11-18 10:54:21,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:54:21,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738132086] [2024-11-18 10:54:21,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738132086] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:54:21,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:54:21,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:54:21,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404876062] [2024-11-18 10:54:21,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:54:21,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:54:21,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:54:21,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:54:21,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:54:21,501 INFO L87 Difference]: Start difference. First operand 95639 states and 107783 transitions. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:54:23,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:54:23,716 INFO L93 Difference]: Finished difference Result 199357 states and 224702 transitions. [2024-11-18 10:54:23,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:54:23,717 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 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 496 [2024-11-18 10:54:23,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:54:23,857 INFO L225 Difference]: With dead ends: 199357 [2024-11-18 10:54:23,857 INFO L226 Difference]: Without dead ends: 103289 [2024-11-18 10:54:23,921 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 [2024-11-18 10:54:23,922 INFO L432 NwaCegarLoop]: 632 mSDtfsCounter, 502 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 1147 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 1328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 1147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-18 10:54:23,923 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [502 Valid, 680 Invalid, 1328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 1147 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-18 10:54:24,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103289 states. [2024-11-18 10:54:25,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103289 to 89634. [2024-11-18 10:54:25,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89634 states, 89633 states have (on average 1.1228900070286614) internal successors, (100648), 89633 states have internal predecessors, (100648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:54:25,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89634 states to 89634 states and 100648 transitions. [2024-11-18 10:54:25,385 INFO L78 Accepts]: Start accepts. Automaton has 89634 states and 100648 transitions. Word has length 496 [2024-11-18 10:54:25,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:54:25,385 INFO L471 AbstractCegarLoop]: Abstraction has 89634 states and 100648 transitions. [2024-11-18 10:54:25,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:54:25,386 INFO L276 IsEmpty]: Start isEmpty. Operand 89634 states and 100648 transitions. [2024-11-18 10:54:25,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2024-11-18 10:54:25,402 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:54:25,402 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:54:25,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 10:54:25,402 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:54:25,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:54:25,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1285746988, now seen corresponding path program 1 times [2024-11-18 10:54:25,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:54:25,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725548578] [2024-11-18 10:54:25,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:54:25,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:54:25,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:54:26,116 INFO L134 CoverageAnalysis]: Checked inductivity of 569 backedges. 340 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2024-11-18 10:54:26,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:54:26,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725548578] [2024-11-18 10:54:26,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725548578] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:54:26,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:54:26,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 10:54:26,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874882946] [2024-11-18 10:54:26,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:54:26,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 10:54:26,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:54:26,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 10:54:26,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 10:54:26,118 INFO L87 Difference]: Start difference. First operand 89634 states and 100648 transitions. Second operand has 4 states, 4 states have (on average 87.75) internal successors, (351), 4 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:54:28,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:54:28,960 INFO L93 Difference]: Finished difference Result 204844 states and 229215 transitions. [2024-11-18 10:54:28,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:54:28,960 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 87.75) internal successors, (351), 4 states have internal predecessors, (351), 0 states have call successors, (0), 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 505 [2024-11-18 10:54:28,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:54:29,109 INFO L225 Difference]: With dead ends: 204844 [2024-11-18 10:54:29,109 INFO L226 Difference]: Without dead ends: 113937 [2024-11-18 10:54:29,146 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 10:54:29,147 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 772 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 2405 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 772 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 2761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 2405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-18 10:54:29,147 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [772 Valid, 251 Invalid, 2761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 2405 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-18 10:54:29,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113937 states. [2024-11-18 10:54:30,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113937 to 109677. [2024-11-18 10:54:30,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109677 states, 109676 states have (on average 1.1174276961231262) internal successors, (122555), 109676 states have internal predecessors, (122555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:54:30,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109677 states to 109677 states and 122555 transitions. [2024-11-18 10:54:30,659 INFO L78 Accepts]: Start accepts. Automaton has 109677 states and 122555 transitions. Word has length 505 [2024-11-18 10:54:30,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:54:30,660 INFO L471 AbstractCegarLoop]: Abstraction has 109677 states and 122555 transitions. [2024-11-18 10:54:30,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.75) internal successors, (351), 4 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:54:30,660 INFO L276 IsEmpty]: Start isEmpty. Operand 109677 states and 122555 transitions. [2024-11-18 10:54:30,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2024-11-18 10:54:30,677 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:54:30,678 INFO L215 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:54:30,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 10:54:30,678 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:54:30,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:54:30,679 INFO L85 PathProgramCache]: Analyzing trace with hash 912340516, now seen corresponding path program 1 times [2024-11-18 10:54:30,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:54:30,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961324893] [2024-11-18 10:54:30,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:54:30,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:54:30,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:54:31,588 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 509 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-11-18 10:54:31,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:54:31,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961324893] [2024-11-18 10:54:31,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961324893] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:54:31,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:54:31,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:54:31,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925092953] [2024-11-18 10:54:31,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:54:31,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:54:31,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:54:31,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:54:31,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:54:31,592 INFO L87 Difference]: Start difference. First operand 109677 states and 122555 transitions. Second operand has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:54:33,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:54:33,593 INFO L93 Difference]: Finished difference Result 232121 states and 259349 transitions. [2024-11-18 10:54:33,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:54:33,594 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 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 509 [2024-11-18 10:54:33,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:54:33,737 INFO L225 Difference]: With dead ends: 232121 [2024-11-18 10:54:33,738 INFO L226 Difference]: Without dead ends: 122446 [2024-11-18 10:54:33,780 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 [2024-11-18 10:54:33,780 INFO L432 NwaCegarLoop]: 265 mSDtfsCounter, 381 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1198 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 1385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 1198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-18 10:54:33,781 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 307 Invalid, 1385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 1198 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-18 10:54:33,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122446 states. [2024-11-18 10:54:35,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122446 to 119463. [2024-11-18 10:54:35,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119463 states, 119462 states have (on average 1.1157020642547422) internal successors, (133284), 119462 states have internal predecessors, (133284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:54:35,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119463 states to 119463 states and 133284 transitions. [2024-11-18 10:54:35,947 INFO L78 Accepts]: Start accepts. Automaton has 119463 states and 133284 transitions. Word has length 509 [2024-11-18 10:54:35,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:54:35,948 INFO L471 AbstractCegarLoop]: Abstraction has 119463 states and 133284 transitions. [2024-11-18 10:54:35,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:54:35,948 INFO L276 IsEmpty]: Start isEmpty. Operand 119463 states and 133284 transitions. [2024-11-18 10:54:35,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2024-11-18 10:54:35,961 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:54:35,961 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-18 10:54:35,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 10:54:35,962 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:54:35,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:54:35,962 INFO L85 PathProgramCache]: Analyzing trace with hash 896412374, now seen corresponding path program 1 times [2024-11-18 10:54:35,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:54:35,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713633863] [2024-11-18 10:54:35,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:54:35,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:54:36,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:54:36,528 INFO L134 CoverageAnalysis]: Checked inductivity of 584 backedges. 345 proven. 0 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2024-11-18 10:54:36,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:54:36,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713633863] [2024-11-18 10:54:36,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713633863] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:54:36,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:54:36,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 10:54:36,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110178941] [2024-11-18 10:54:36,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:54:36,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 10:54:36,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:54:36,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 10:54:36,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 10:54:36,531 INFO L87 Difference]: Start difference. First operand 119463 states and 133284 transitions. Second operand has 4 states, 4 states have (on average 87.75) internal successors, (351), 4 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:54:39,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:54:39,304 INFO L93 Difference]: Finished difference Result 260660 states and 290115 transitions. [2024-11-18 10:54:39,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:54:39,304 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 87.75) internal successors, (351), 4 states have internal predecessors, (351), 0 states have call successors, (0), 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 510 [2024-11-18 10:54:39,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:54:39,475 INFO L225 Difference]: With dead ends: 260660 [2024-11-18 10:54:39,475 INFO L226 Difference]: Without dead ends: 139924 [2024-11-18 10:54:39,550 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 10:54:39,550 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 798 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 2242 mSolverCounterSat, 445 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 798 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 2687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 445 IncrementalHoareTripleChecker+Valid, 2242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-18 10:54:39,550 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [798 Valid, 227 Invalid, 2687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [445 Valid, 2242 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-18 10:54:39,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139924 states. [2024-11-18 10:54:41,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139924 to 119463. [2024-11-18 10:54:41,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119463 states, 119462 states have (on average 1.1157020642547422) internal successors, (133284), 119462 states have internal predecessors, (133284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:54:41,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119463 states to 119463 states and 133284 transitions. [2024-11-18 10:54:41,580 INFO L78 Accepts]: Start accepts. Automaton has 119463 states and 133284 transitions. Word has length 510 [2024-11-18 10:54:41,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:54:41,581 INFO L471 AbstractCegarLoop]: Abstraction has 119463 states and 133284 transitions. [2024-11-18 10:54:41,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.75) internal successors, (351), 4 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:54:41,582 INFO L276 IsEmpty]: Start isEmpty. Operand 119463 states and 133284 transitions. [2024-11-18 10:54:41,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2024-11-18 10:54:41,609 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:54:41,609 INFO L215 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:54:41,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-18 10:54:41,610 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:54:41,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:54:41,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1610286098, now seen corresponding path program 1 times [2024-11-18 10:54:41,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:54:41,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481875144] [2024-11-18 10:54:41,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:54:41,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:54:41,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:54:42,139 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 490 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2024-11-18 10:54:42,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:54:42,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481875144] [2024-11-18 10:54:42,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481875144] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:54:42,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:54:42,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:54:42,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896569667] [2024-11-18 10:54:42,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:54:42,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:54:42,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:54:42,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:54:42,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:54:42,143 INFO L87 Difference]: Start difference. First operand 119463 states and 133284 transitions. Second operand has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:54:44,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:54:44,266 INFO L93 Difference]: Finished difference Result 261570 states and 291310 transitions. [2024-11-18 10:54:44,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:54:44,267 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 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 541 [2024-11-18 10:54:44,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:54:44,428 INFO L225 Difference]: With dead ends: 261570 [2024-11-18 10:54:44,429 INFO L226 Difference]: Without dead ends: 142109 [2024-11-18 10:54:44,504 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 [2024-11-18 10:54:44,504 INFO L432 NwaCegarLoop]: 703 mSDtfsCounter, 300 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 1156 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 1240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-18 10:54:44,505 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 766 Invalid, 1240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1156 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-18 10:54:44,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142109 states. [2024-11-18 10:54:46,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142109 to 142101. [2024-11-18 10:54:46,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142101 states, 142100 states have (on average 1.106530612244898) internal successors, (157238), 142100 states have internal predecessors, (157238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:54:46,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142101 states to 142101 states and 157238 transitions. [2024-11-18 10:54:46,656 INFO L78 Accepts]: Start accepts. Automaton has 142101 states and 157238 transitions. Word has length 541 [2024-11-18 10:54:46,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:54:46,656 INFO L471 AbstractCegarLoop]: Abstraction has 142101 states and 157238 transitions. [2024-11-18 10:54:46,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:54:46,657 INFO L276 IsEmpty]: Start isEmpty. Operand 142101 states and 157238 transitions. [2024-11-18 10:54:46,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 593 [2024-11-18 10:54:46,674 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:54:46,675 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-18 10:54:46,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-18 10:54:46,675 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:54:46,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:54:46,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1925630162, now seen corresponding path program 1 times [2024-11-18 10:54:46,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:54:46,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974579956] [2024-11-18 10:54:46,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:54:46,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:54:46,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat