./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label06.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label06.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e9764aa77a297d88a5c4424b1d4363c7dc0ea34b016b7ff505243e4a2273d457 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-13 23:54:08,266 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 23:54:08,358 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-13 23:54:08,371 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 23:54:08,372 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 23:54:08,408 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 23:54:08,408 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 23:54:08,409 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 23:54:08,414 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 23:54:08,415 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 23:54:08,415 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 23:54:08,415 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 23:54:08,416 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 23:54:08,416 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 23:54:08,416 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 23:54:08,416 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 23:54:08,417 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 23:54:08,417 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 23:54:08,422 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 23:54:08,423 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 23:54:08,423 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 23:54:08,423 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 23:54:08,423 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 23:54:08,424 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 23:54:08,424 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 23:54:08,424 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 23:54:08,424 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 23:54:08,424 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 23:54:08,425 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 23:54:08,425 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 23:54:08,425 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 23:54:08,425 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 23:54:08,426 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 23:54:08,426 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 23:54:08,433 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 23:54:08,434 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 23:54:08,434 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 23:54:08,434 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 23:54:08,434 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 23:54:08,434 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 23:54:08,434 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 23:54:08,435 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 23:54:08,435 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e9764aa77a297d88a5c4424b1d4363c7dc0ea34b016b7ff505243e4a2273d457 [2024-10-13 23:54:08,644 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 23:54:08,666 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 23:54:08,668 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 23:54:08,669 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 23:54:08,669 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 23:54:08,670 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label06.c [2024-10-13 23:54:10,028 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 23:54:10,340 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 23:54:10,341 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label06.c [2024-10-13 23:54:10,362 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26c28c7de/7f97ff17339b4c81b9df66a71acae39f/FLAG2bc2d54f5 [2024-10-13 23:54:10,375 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26c28c7de/7f97ff17339b4c81b9df66a71acae39f [2024-10-13 23:54:10,377 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 23:54:10,378 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 23:54:10,380 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 23:54:10,381 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 23:54:10,385 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 23:54:10,385 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:54:10" (1/1) ... [2024-10-13 23:54:10,386 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4da3132c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:54:10, skipping insertion in model container [2024-10-13 23:54:10,386 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:54:10" (1/1) ... [2024-10-13 23:54:10,500 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 23:54:10,656 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label06.c[4782,4795] [2024-10-13 23:54:11,058 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 23:54:11,066 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 23:54:11,084 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label06.c[4782,4795] [2024-10-13 23:54:11,279 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 23:54:11,293 INFO L204 MainTranslator]: Completed translation [2024-10-13 23:54:11,294 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:54:11 WrapperNode [2024-10-13 23:54:11,294 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 23:54:11,295 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 23:54:11,295 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 23:54:11,295 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 23:54:11,300 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:54:11" (1/1) ... [2024-10-13 23:54:11,340 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:54:11" (1/1) ... [2024-10-13 23:54:11,700 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2613 [2024-10-13 23:54:11,700 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 23:54:11,701 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 23:54:11,701 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 23:54:11,701 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 23:54:11,713 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:54:11" (1/1) ... [2024-10-13 23:54:11,717 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:54:11" (1/1) ... [2024-10-13 23:54:11,800 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:54:11" (1/1) ... [2024-10-13 23:54:11,884 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-13 23:54:11,885 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:54:11" (1/1) ... [2024-10-13 23:54:11,885 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:54:11" (1/1) ... [2024-10-13 23:54:11,951 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:54:11" (1/1) ... [2024-10-13 23:54:12,018 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:54:11" (1/1) ... [2024-10-13 23:54:12,056 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:54:11" (1/1) ... [2024-10-13 23:54:12,080 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:54:11" (1/1) ... [2024-10-13 23:54:12,124 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 23:54:12,125 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 23:54:12,128 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 23:54:12,128 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 23:54:12,128 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:54:11" (1/1) ... [2024-10-13 23:54:12,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 23:54:12,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 23:54:12,151 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 23:54:12,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-13 23:54:12,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 23:54:12,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 23:54:12,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 23:54:12,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 23:54:12,237 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 23:54:12,238 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 23:54:14,842 INFO L? ?]: Removed 372 outVars from TransFormulas that were not future-live. [2024-10-13 23:54:14,843 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 23:54:14,886 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 23:54:14,886 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-13 23:54:14,887 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:54:14 BoogieIcfgContainer [2024-10-13 23:54:14,887 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 23:54:14,889 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 23:54:14,889 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 23:54:14,891 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 23:54:14,892 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:54:10" (1/3) ... [2024-10-13 23:54:14,892 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42d0a4e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:54:14, skipping insertion in model container [2024-10-13 23:54:14,892 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:54:11" (2/3) ... [2024-10-13 23:54:14,893 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42d0a4e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:54:14, skipping insertion in model container [2024-10-13 23:54:14,893 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:54:14" (3/3) ... [2024-10-13 23:54:14,894 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label06.c [2024-10-13 23:54:14,906 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 23:54:14,907 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-13 23:54:14,962 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 23:54:14,968 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;@2af61eb2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 23:54:14,968 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-13 23:54:14,977 INFO L276 IsEmpty]: Start isEmpty. Operand has 528 states, 526 states have (on average 1.9011406844106464) internal successors, (1000), 527 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:14,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-10-13 23:54:14,982 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:54:14,982 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:54:14,983 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:54:14,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:54:14,987 INFO L85 PathProgramCache]: Analyzing trace with hash -484703600, now seen corresponding path program 1 times [2024-10-13 23:54:14,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:54:14,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382979006] [2024-10-13 23:54:14,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:54:14,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:54:15,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:54:15,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 23:54:15,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:54:15,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382979006] [2024-10-13 23:54:15,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382979006] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:54:15,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:54:15,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 23:54:15,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192519199] [2024-10-13 23:54:15,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:54:15,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-13 23:54:15,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:54:15,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-13 23:54:15,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 23:54:15,179 INFO L87 Difference]: Start difference. First operand has 528 states, 526 states have (on average 1.9011406844106464) internal successors, (1000), 527 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:15,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:54:15,246 INFO L93 Difference]: Finished difference Result 1055 states and 1999 transitions. [2024-10-13 23:54:15,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-13 23:54:15,251 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2024-10-13 23:54:15,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:54:15,262 INFO L225 Difference]: With dead ends: 1055 [2024-10-13 23:54:15,263 INFO L226 Difference]: Without dead ends: 526 [2024-10-13 23:54:15,266 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 23:54:15,269 INFO L432 NwaCegarLoop]: 935 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 23:54:15,269 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 935 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 23:54:15,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2024-10-13 23:54:15,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2024-10-13 23:54:15,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 525 states have (on average 1.7809523809523808) internal successors, (935), 525 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:15,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 935 transitions. [2024-10-13 23:54:15,329 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 935 transitions. Word has length 30 [2024-10-13 23:54:15,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:54:15,329 INFO L471 AbstractCegarLoop]: Abstraction has 526 states and 935 transitions. [2024-10-13 23:54:15,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:15,329 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 935 transitions. [2024-10-13 23:54:15,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-10-13 23:54:15,330 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:54:15,330 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:54:15,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 23:54:15,330 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:54:15,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:54:15,331 INFO L85 PathProgramCache]: Analyzing trace with hash 610002122, now seen corresponding path program 1 times [2024-10-13 23:54:15,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:54:15,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900960952] [2024-10-13 23:54:15,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:54:15,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:54:15,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:54:15,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 23:54:15,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:54:15,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900960952] [2024-10-13 23:54:15,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900960952] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:54:15,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:54:15,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 23:54:15,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990624407] [2024-10-13 23:54:15,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:54:15,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:54:15,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:54:15,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:54:15,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:54:15,566 INFO L87 Difference]: Start difference. First operand 526 states and 935 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:17,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:54:17,714 INFO L93 Difference]: Finished difference Result 1522 states and 2728 transitions. [2024-10-13 23:54:17,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:54:17,715 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2024-10-13 23:54:17,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:54:17,719 INFO L225 Difference]: With dead ends: 1522 [2024-10-13 23:54:17,720 INFO L226 Difference]: Without dead ends: 997 [2024-10-13 23:54:17,721 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:54:17,722 INFO L432 NwaCegarLoop]: 180 mSDtfsCounter, 480 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 1492 mSolverCounterSat, 351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 1843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 351 IncrementalHoareTripleChecker+Valid, 1492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-10-13 23:54:17,722 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [480 Valid, 239 Invalid, 1843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [351 Valid, 1492 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-10-13 23:54:17,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2024-10-13 23:54:17,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 981. [2024-10-13 23:54:17,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 981 states, 980 states have (on average 1.7081632653061225) internal successors, (1674), 980 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:17,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 981 states to 981 states and 1674 transitions. [2024-10-13 23:54:17,750 INFO L78 Accepts]: Start accepts. Automaton has 981 states and 1674 transitions. Word has length 30 [2024-10-13 23:54:17,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:54:17,750 INFO L471 AbstractCegarLoop]: Abstraction has 981 states and 1674 transitions. [2024-10-13 23:54:17,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:17,751 INFO L276 IsEmpty]: Start isEmpty. Operand 981 states and 1674 transitions. [2024-10-13 23:54:17,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-10-13 23:54:17,752 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:54:17,753 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-13 23:54:17,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 23:54:17,753 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:54:17,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:54:17,754 INFO L85 PathProgramCache]: Analyzing trace with hash 880928828, now seen corresponding path program 1 times [2024-10-13 23:54:17,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:54:17,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588666884] [2024-10-13 23:54:17,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:54:17,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:54:17,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:54:17,900 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 23:54:17,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:54:17,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588666884] [2024-10-13 23:54:17,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588666884] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:54:17,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:54:17,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 23:54:17,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472558503] [2024-10-13 23:54:17,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:54:17,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:54:17,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:54:17,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:54:17,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:54:17,902 INFO L87 Difference]: Start difference. First operand 981 states and 1674 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:19,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:54:19,715 INFO L93 Difference]: Finished difference Result 2840 states and 4880 transitions. [2024-10-13 23:54:19,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:54:19,716 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2024-10-13 23:54:19,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:54:19,721 INFO L225 Difference]: With dead ends: 2840 [2024-10-13 23:54:19,721 INFO L226 Difference]: Without dead ends: 1860 [2024-10-13 23:54:19,723 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:54:19,725 INFO L432 NwaCegarLoop]: 421 mSDtfsCounter, 407 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1341 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 1666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-10-13 23:54:19,725 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 494 Invalid, 1666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1341 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-10-13 23:54:19,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1860 states. [2024-10-13 23:54:19,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1860 to 1856. [2024-10-13 23:54:19,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1856 states, 1855 states have (on average 1.4549865229110512) internal successors, (2699), 1855 states have internal predecessors, (2699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:19,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1856 states to 1856 states and 2699 transitions. [2024-10-13 23:54:19,758 INFO L78 Accepts]: Start accepts. Automaton has 1856 states and 2699 transitions. Word has length 95 [2024-10-13 23:54:19,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:54:19,759 INFO L471 AbstractCegarLoop]: Abstraction has 1856 states and 2699 transitions. [2024-10-13 23:54:19,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:19,759 INFO L276 IsEmpty]: Start isEmpty. Operand 1856 states and 2699 transitions. [2024-10-13 23:54:19,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-10-13 23:54:19,766 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:54:19,766 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-13 23:54:19,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 23:54:19,767 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:54:19,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:54:19,767 INFO L85 PathProgramCache]: Analyzing trace with hash 710160551, now seen corresponding path program 1 times [2024-10-13 23:54:19,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:54:19,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965111273] [2024-10-13 23:54:19,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:54:19,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:54:19,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:54:20,139 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 23:54:20,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:54:20,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965111273] [2024-10-13 23:54:20,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965111273] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:54:20,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:54:20,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 23:54:20,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23464477] [2024-10-13 23:54:20,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:54:20,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:54:20,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:54:20,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:54:20,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:54:20,141 INFO L87 Difference]: Start difference. First operand 1856 states and 2699 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 2 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:22,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:54:22,094 INFO L93 Difference]: Finished difference Result 4590 states and 6639 transitions. [2024-10-13 23:54:22,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:54:22,095 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 2 states have internal predecessors, (135), 0 states have call successors, (0), 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 135 [2024-10-13 23:54:22,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:54:22,103 INFO L225 Difference]: With dead ends: 4590 [2024-10-13 23:54:22,103 INFO L226 Difference]: Without dead ends: 2735 [2024-10-13 23:54:22,105 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:54:22,106 INFO L432 NwaCegarLoop]: 473 mSDtfsCounter, 352 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1666 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 1764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-10-13 23:54:22,107 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 535 Invalid, 1764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1666 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-10-13 23:54:22,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2735 states. [2024-10-13 23:54:22,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2735 to 2715. [2024-10-13 23:54:22,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2715 states, 2714 states have (on average 1.3909358879882092) internal successors, (3775), 2714 states have internal predecessors, (3775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:22,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2715 states to 2715 states and 3775 transitions. [2024-10-13 23:54:22,145 INFO L78 Accepts]: Start accepts. Automaton has 2715 states and 3775 transitions. Word has length 135 [2024-10-13 23:54:22,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:54:22,145 INFO L471 AbstractCegarLoop]: Abstraction has 2715 states and 3775 transitions. [2024-10-13 23:54:22,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 2 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:22,146 INFO L276 IsEmpty]: Start isEmpty. Operand 2715 states and 3775 transitions. [2024-10-13 23:54:22,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-10-13 23:54:22,152 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:54:22,152 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-13 23:54:22,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 23:54:22,153 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:54:22,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:54:22,153 INFO L85 PathProgramCache]: Analyzing trace with hash 944997302, now seen corresponding path program 1 times [2024-10-13 23:54:22,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:54:22,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576616592] [2024-10-13 23:54:22,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:54:22,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:54:22,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:54:22,362 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 23:54:22,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:54:22,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576616592] [2024-10-13 23:54:22,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576616592] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:54:22,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:54:22,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 23:54:22,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884782766] [2024-10-13 23:54:22,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:54:22,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:54:22,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:54:22,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:54:22,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:54:22,364 INFO L87 Difference]: Start difference. First operand 2715 states and 3775 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:24,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:54:24,395 INFO L93 Difference]: Finished difference Result 6708 states and 9428 transitions. [2024-10-13 23:54:24,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:54:24,395 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 0 states have call successors, (0), 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 141 [2024-10-13 23:54:24,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:54:24,409 INFO L225 Difference]: With dead ends: 6708 [2024-10-13 23:54:24,409 INFO L226 Difference]: Without dead ends: 3994 [2024-10-13 23:54:24,413 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:54:24,417 INFO L432 NwaCegarLoop]: 514 mSDtfsCounter, 347 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 1630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-10-13 23:54:24,418 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 589 Invalid, 1630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-10-13 23:54:24,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3994 states. [2024-10-13 23:54:24,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3994 to 3141. [2024-10-13 23:54:24,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3141 states, 3140 states have (on average 1.2745222929936306) internal successors, (4002), 3140 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:24,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3141 states to 3141 states and 4002 transitions. [2024-10-13 23:54:24,502 INFO L78 Accepts]: Start accepts. Automaton has 3141 states and 4002 transitions. Word has length 141 [2024-10-13 23:54:24,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:54:24,504 INFO L471 AbstractCegarLoop]: Abstraction has 3141 states and 4002 transitions. [2024-10-13 23:54:24,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:24,504 INFO L276 IsEmpty]: Start isEmpty. Operand 3141 states and 4002 transitions. [2024-10-13 23:54:24,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-10-13 23:54:24,508 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:54:24,508 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:54:24,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 23:54:24,508 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:54:24,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:54:24,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1831495645, now seen corresponding path program 1 times [2024-10-13 23:54:24,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:54:24,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074490541] [2024-10-13 23:54:24,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:54:24,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:54:24,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:54:24,789 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 23:54:24,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:54:24,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074490541] [2024-10-13 23:54:24,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074490541] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:54:24,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:54:24,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 23:54:24,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844021618] [2024-10-13 23:54:24,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:54:24,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 23:54:24,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:54:24,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 23:54:24,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-13 23:54:24,792 INFO L87 Difference]: Start difference. First operand 3141 states and 4002 transitions. Second operand has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:27,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:54:27,001 INFO L93 Difference]: Finished difference Result 8004 states and 10507 transitions. [2024-10-13 23:54:27,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 23:54:27,001 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 0 states have call successors, (0), 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 178 [2024-10-13 23:54:27,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:54:27,015 INFO L225 Difference]: With dead ends: 8004 [2024-10-13 23:54:27,015 INFO L226 Difference]: Without dead ends: 4864 [2024-10-13 23:54:27,019 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 [2024-10-13 23:54:27,019 INFO L432 NwaCegarLoop]: 763 mSDtfsCounter, 593 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 2472 mSolverCounterSat, 622 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 593 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 3094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 622 IncrementalHoareTripleChecker+Valid, 2472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-10-13 23:54:27,020 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [593 Valid, 924 Invalid, 3094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [622 Valid, 2472 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-10-13 23:54:27,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4864 states. [2024-10-13 23:54:27,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4864 to 4851. [2024-10-13 23:54:27,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4851 states, 4850 states have (on average 1.26659793814433) internal successors, (6143), 4850 states have internal predecessors, (6143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:27,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4851 states to 4851 states and 6143 transitions. [2024-10-13 23:54:27,076 INFO L78 Accepts]: Start accepts. Automaton has 4851 states and 6143 transitions. Word has length 178 [2024-10-13 23:54:27,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:54:27,077 INFO L471 AbstractCegarLoop]: Abstraction has 4851 states and 6143 transitions. [2024-10-13 23:54:27,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:27,077 INFO L276 IsEmpty]: Start isEmpty. Operand 4851 states and 6143 transitions. [2024-10-13 23:54:27,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-10-13 23:54:27,078 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:54:27,078 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:54:27,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 23:54:27,078 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:54:27,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:54:27,079 INFO L85 PathProgramCache]: Analyzing trace with hash -134338676, now seen corresponding path program 1 times [2024-10-13 23:54:27,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:54:27,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113101902] [2024-10-13 23:54:27,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:54:27,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:54:27,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:54:27,172 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-13 23:54:27,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:54:27,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113101902] [2024-10-13 23:54:27,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113101902] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:54:27,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:54:27,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:54:27,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674311497] [2024-10-13 23:54:27,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:54:27,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:54:27,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:54:27,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:54:27,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:54:27,175 INFO L87 Difference]: Start difference. First operand 4851 states and 6143 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:28,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:54:28,908 INFO L93 Difference]: Finished difference Result 12248 states and 15824 transitions. [2024-10-13 23:54:28,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:54:28,908 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 184 [2024-10-13 23:54:28,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:54:28,924 INFO L225 Difference]: With dead ends: 12248 [2024-10-13 23:54:28,924 INFO L226 Difference]: Without dead ends: 7398 [2024-10-13 23:54:28,928 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:54:28,928 INFO L432 NwaCegarLoop]: 479 mSDtfsCounter, 416 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 1340 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 1696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 1340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-10-13 23:54:28,929 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [416 Valid, 543 Invalid, 1696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 1340 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-10-13 23:54:28,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7398 states. [2024-10-13 23:54:28,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7398 to 4825. [2024-10-13 23:54:28,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4825 states, 4824 states have (on average 1.265339966832504) internal successors, (6104), 4824 states have internal predecessors, (6104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:28,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4825 states to 4825 states and 6104 transitions. [2024-10-13 23:54:28,989 INFO L78 Accepts]: Start accepts. Automaton has 4825 states and 6104 transitions. Word has length 184 [2024-10-13 23:54:28,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:54:28,990 INFO L471 AbstractCegarLoop]: Abstraction has 4825 states and 6104 transitions. [2024-10-13 23:54:28,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:28,990 INFO L276 IsEmpty]: Start isEmpty. Operand 4825 states and 6104 transitions. [2024-10-13 23:54:28,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-10-13 23:54:28,991 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:54:28,991 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1] [2024-10-13 23:54:28,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 23:54:28,992 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:54:28,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:54:28,992 INFO L85 PathProgramCache]: Analyzing trace with hash -576344346, now seen corresponding path program 1 times [2024-10-13 23:54:28,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:54:28,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644850811] [2024-10-13 23:54:28,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:54:28,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:54:29,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:54:29,102 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-10-13 23:54:29,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:54:29,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644850811] [2024-10-13 23:54:29,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644850811] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:54:29,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:54:29,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:54:29,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072442766] [2024-10-13 23:54:29,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:54:29,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:54:29,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:54:29,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:54:29,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:54:29,104 INFO L87 Difference]: Start difference. First operand 4825 states and 6104 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:30,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:54:30,785 INFO L93 Difference]: Finished difference Result 13480 states and 17130 transitions. [2024-10-13 23:54:30,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:54:30,786 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 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 197 [2024-10-13 23:54:30,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:54:30,813 INFO L225 Difference]: With dead ends: 13480 [2024-10-13 23:54:30,813 INFO L226 Difference]: Without dead ends: 8656 [2024-10-13 23:54:30,818 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:54:30,819 INFO L432 NwaCegarLoop]: 423 mSDtfsCounter, 452 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1421 mSolverCounterSat, 328 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 1749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 328 IncrementalHoareTripleChecker+Valid, 1421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-13 23:54:30,819 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [452 Valid, 481 Invalid, 1749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [328 Valid, 1421 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-13 23:54:30,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8656 states. [2024-10-13 23:54:30,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8656 to 7377. [2024-10-13 23:54:30,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7377 states, 7376 states have (on average 1.247966377440347) internal successors, (9205), 7376 states have internal predecessors, (9205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:30,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7377 states to 7377 states and 9205 transitions. [2024-10-13 23:54:30,893 INFO L78 Accepts]: Start accepts. Automaton has 7377 states and 9205 transitions. Word has length 197 [2024-10-13 23:54:30,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:54:30,893 INFO L471 AbstractCegarLoop]: Abstraction has 7377 states and 9205 transitions. [2024-10-13 23:54:30,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:30,893 INFO L276 IsEmpty]: Start isEmpty. Operand 7377 states and 9205 transitions. [2024-10-13 23:54:30,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2024-10-13 23:54:30,895 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:54:30,896 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:54:30,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-13 23:54:30,896 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:54:30,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:54:30,896 INFO L85 PathProgramCache]: Analyzing trace with hash 750637180, now seen corresponding path program 1 times [2024-10-13 23:54:30,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:54:30,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820138694] [2024-10-13 23:54:30,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:54:30,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:54:30,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:54:31,090 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-10-13 23:54:31,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:54:31,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820138694] [2024-10-13 23:54:31,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820138694] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:54:31,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:54:31,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:54:31,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916771719] [2024-10-13 23:54:31,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:54:31,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:54:31,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:54:31,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:54:31,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:54:31,093 INFO L87 Difference]: Start difference. First operand 7377 states and 9205 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:32,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:54:32,870 INFO L93 Difference]: Finished difference Result 18606 states and 23434 transitions. [2024-10-13 23:54:32,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:54:32,871 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 246 [2024-10-13 23:54:32,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:54:32,883 INFO L225 Difference]: With dead ends: 18606 [2024-10-13 23:54:32,883 INFO L226 Difference]: Without dead ends: 10378 [2024-10-13 23:54:32,889 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:54:32,889 INFO L432 NwaCegarLoop]: 943 mSDtfsCounter, 469 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 1482 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 1730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 1482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-10-13 23:54:32,890 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [469 Valid, 1017 Invalid, 1730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 1482 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-10-13 23:54:32,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10378 states. [2024-10-13 23:54:32,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10378 to 10370. [2024-10-13 23:54:32,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10370 states, 10369 states have (on average 1.2060950911370432) internal successors, (12506), 10369 states have internal predecessors, (12506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:32,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10370 states to 10370 states and 12506 transitions. [2024-10-13 23:54:32,971 INFO L78 Accepts]: Start accepts. Automaton has 10370 states and 12506 transitions. Word has length 246 [2024-10-13 23:54:32,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:54:32,971 INFO L471 AbstractCegarLoop]: Abstraction has 10370 states and 12506 transitions. [2024-10-13 23:54:32,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:32,972 INFO L276 IsEmpty]: Start isEmpty. Operand 10370 states and 12506 transitions. [2024-10-13 23:54:32,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2024-10-13 23:54:32,974 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:54:32,974 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:54:32,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-13 23:54:32,975 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:54:32,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:54:32,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1836235263, now seen corresponding path program 1 times [2024-10-13 23:54:32,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:54:32,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402159073] [2024-10-13 23:54:32,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:54:32,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:54:33,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:54:33,191 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 196 proven. 70 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-10-13 23:54:33,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:54:33,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402159073] [2024-10-13 23:54:33,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402159073] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 23:54:33,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831507349] [2024-10-13 23:54:33,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:54:33,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:54:33,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 23:54:33,194 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 23:54:33,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 23:54:33,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:54:33,304 INFO L255 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 23:54:33,310 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 23:54:33,575 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 196 proven. 70 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-10-13 23:54:33,575 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 23:54:33,890 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 266 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-10-13 23:54:33,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831507349] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-13 23:54:33,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-13 23:54:33,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-10-13 23:54:33,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591560739] [2024-10-13 23:54:33,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:54:33,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 23:54:33,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:54:33,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 23:54:33,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-13 23:54:33,893 INFO L87 Difference]: Start difference. First operand 10370 states and 12506 transitions. Second operand has 4 states, 4 states have (on average 56.5) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:37,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:54:37,175 INFO L93 Difference]: Finished difference Result 32690 states and 39750 transitions. [2024-10-13 23:54:37,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 23:54:37,175 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 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 254 [2024-10-13 23:54:37,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:54:37,201 INFO L225 Difference]: With dead ends: 32690 [2024-10-13 23:54:37,202 INFO L226 Difference]: Without dead ends: 21460 [2024-10-13 23:54:37,212 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 509 GetRequests, 505 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-13 23:54:37,213 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 1138 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 2294 mSolverCounterSat, 1420 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1138 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 3714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1420 IncrementalHoareTripleChecker+Valid, 2294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-10-13 23:54:37,213 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1138 Valid, 140 Invalid, 3714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1420 Valid, 2294 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-10-13 23:54:37,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21460 states. [2024-10-13 23:54:37,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21460 to 21458. [2024-10-13 23:54:37,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21458 states, 21457 states have (on average 1.1587826816423545) internal successors, (24864), 21457 states have internal predecessors, (24864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:37,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21458 states to 21458 states and 24864 transitions. [2024-10-13 23:54:37,388 INFO L78 Accepts]: Start accepts. Automaton has 21458 states and 24864 transitions. Word has length 254 [2024-10-13 23:54:37,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:54:37,388 INFO L471 AbstractCegarLoop]: Abstraction has 21458 states and 24864 transitions. [2024-10-13 23:54:37,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:37,389 INFO L276 IsEmpty]: Start isEmpty. Operand 21458 states and 24864 transitions. [2024-10-13 23:54:37,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2024-10-13 23:54:37,391 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:54:37,391 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:54:37,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-13 23:54:37,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-13 23:54:37,596 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:54:37,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:54:37,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1441451129, now seen corresponding path program 1 times [2024-10-13 23:54:37,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:54:37,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991412236] [2024-10-13 23:54:37,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:54:37,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:54:37,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:54:37,708 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 229 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-10-13 23:54:37,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:54:37,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991412236] [2024-10-13 23:54:37,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991412236] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:54:37,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:54:37,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:54:37,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145849508] [2024-10-13 23:54:37,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:54:37,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:54:37,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:54:37,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:54:37,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:54:37,709 INFO L87 Difference]: Start difference. First operand 21458 states and 24864 transitions. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:39,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:54:39,245 INFO L93 Difference]: Finished difference Result 47591 states and 55278 transitions. [2024-10-13 23:54:39,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:54:39,246 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 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 267 [2024-10-13 23:54:39,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:54:39,274 INFO L225 Difference]: With dead ends: 47591 [2024-10-13 23:54:39,274 INFO L226 Difference]: Without dead ends: 26134 [2024-10-13 23:54:39,289 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:54:39,290 INFO L432 NwaCegarLoop]: 790 mSDtfsCounter, 373 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 1203 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 855 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 1203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-13 23:54:39,290 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [373 Valid, 855 Invalid, 1409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 1203 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-13 23:54:39,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26134 states. [2024-10-13 23:54:39,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26134 to 25709. [2024-10-13 23:54:39,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25709 states, 25708 states have (on average 1.143107203983196) internal successors, (29387), 25708 states have internal predecessors, (29387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:39,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25709 states to 25709 states and 29387 transitions. [2024-10-13 23:54:39,484 INFO L78 Accepts]: Start accepts. Automaton has 25709 states and 29387 transitions. Word has length 267 [2024-10-13 23:54:39,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:54:39,484 INFO L471 AbstractCegarLoop]: Abstraction has 25709 states and 29387 transitions. [2024-10-13 23:54:39,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:39,484 INFO L276 IsEmpty]: Start isEmpty. Operand 25709 states and 29387 transitions. [2024-10-13 23:54:39,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2024-10-13 23:54:39,488 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:54:39,488 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-10-13 23:54:39,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-13 23:54:39,488 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:54:39,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:54:39,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1520496576, now seen corresponding path program 1 times [2024-10-13 23:54:39,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:54:39,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372829180] [2024-10-13 23:54:39,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:54:39,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:54:39,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:54:39,743 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 229 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-10-13 23:54:39,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:54:39,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372829180] [2024-10-13 23:54:39,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372829180] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:54:39,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:54:39,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 23:54:39,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730507804] [2024-10-13 23:54:39,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:54:39,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 23:54:39,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:54:39,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 23:54:39,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 23:54:39,745 INFO L87 Difference]: Start difference. First operand 25709 states and 29387 transitions. Second operand has 4 states, 4 states have (on average 52.25) internal successors, (209), 4 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:42,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:54:42,568 INFO L93 Difference]: Finished difference Result 67189 states and 77163 transitions. [2024-10-13 23:54:42,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 23:54:42,569 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.25) internal successors, (209), 4 states have internal predecessors, (209), 0 states have call successors, (0), 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 290 [2024-10-13 23:54:42,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:54:42,606 INFO L225 Difference]: With dead ends: 67189 [2024-10-13 23:54:42,606 INFO L226 Difference]: Without dead ends: 38067 [2024-10-13 23:54:42,623 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 [2024-10-13 23:54:42,624 INFO L432 NwaCegarLoop]: 231 mSDtfsCounter, 867 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 2805 mSolverCounterSat, 449 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 3254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 449 IncrementalHoareTripleChecker+Valid, 2805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-10-13 23:54:42,624 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [867 Valid, 344 Invalid, 3254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [449 Valid, 2805 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-10-13 23:54:42,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38067 states. [2024-10-13 23:54:42,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38067 to 34624. [2024-10-13 23:54:42,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34624 states, 34623 states have (on average 1.1460589781359212) internal successors, (39680), 34623 states have internal predecessors, (39680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:42,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34624 states to 34624 states and 39680 transitions. [2024-10-13 23:54:42,911 INFO L78 Accepts]: Start accepts. Automaton has 34624 states and 39680 transitions. Word has length 290 [2024-10-13 23:54:42,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:54:42,912 INFO L471 AbstractCegarLoop]: Abstraction has 34624 states and 39680 transitions. [2024-10-13 23:54:42,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.25) internal successors, (209), 4 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:42,912 INFO L276 IsEmpty]: Start isEmpty. Operand 34624 states and 39680 transitions. [2024-10-13 23:54:42,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2024-10-13 23:54:42,920 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:54:42,920 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:54:42,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-13 23:54:42,920 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:54:42,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:54:42,920 INFO L85 PathProgramCache]: Analyzing trace with hash 9756323, now seen corresponding path program 1 times [2024-10-13 23:54:42,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:54:42,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605685819] [2024-10-13 23:54:42,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:54:42,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:54:42,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:54:43,093 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 282 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-10-13 23:54:43,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:54:43,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605685819] [2024-10-13 23:54:43,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605685819] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:54:43,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:54:43,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:54:43,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149578780] [2024-10-13 23:54:43,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:54:43,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:54:43,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:54:43,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:54:43,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:54:43,096 INFO L87 Difference]: Start difference. First operand 34624 states and 39680 transitions. Second operand has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:44,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:54:44,754 INFO L93 Difference]: Finished difference Result 83320 states and 95564 transitions. [2024-10-13 23:54:44,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:54:44,755 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 305 [2024-10-13 23:54:44,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:54:44,805 INFO L225 Difference]: With dead ends: 83320 [2024-10-13 23:54:44,806 INFO L226 Difference]: Without dead ends: 45720 [2024-10-13 23:54:44,833 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:54:44,834 INFO L432 NwaCegarLoop]: 730 mSDtfsCounter, 362 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 1213 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 799 SdHoareTripleChecker+Invalid, 1449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 1213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-13 23:54:44,834 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 799 Invalid, 1449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 1213 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-13 23:54:44,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45720 states. [2024-10-13 23:54:45,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45720 to 45285. [2024-10-13 23:54:45,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45285 states, 45284 states have (on average 1.1171053793834467) internal successors, (50587), 45284 states have internal predecessors, (50587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:45,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45285 states to 45285 states and 50587 transitions. [2024-10-13 23:54:45,257 INFO L78 Accepts]: Start accepts. Automaton has 45285 states and 50587 transitions. Word has length 305 [2024-10-13 23:54:45,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:54:45,258 INFO L471 AbstractCegarLoop]: Abstraction has 45285 states and 50587 transitions. [2024-10-13 23:54:45,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:45,258 INFO L276 IsEmpty]: Start isEmpty. Operand 45285 states and 50587 transitions. [2024-10-13 23:54:45,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2024-10-13 23:54:45,263 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:54:45,263 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:54:45,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-13 23:54:45,264 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:54:45,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:54:45,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1750908446, now seen corresponding path program 1 times [2024-10-13 23:54:45,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:54:45,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725454167] [2024-10-13 23:54:45,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:54:45,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:54:45,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:54:45,731 INFO L134 CoverageAnalysis]: Checked inductivity of 538 backedges. 295 proven. 214 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-10-13 23:54:45,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:54:45,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725454167] [2024-10-13 23:54:45,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725454167] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 23:54:45,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214466994] [2024-10-13 23:54:45,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:54:45,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:54:45,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 23:54:45,734 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 23:54:45,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 23:54:45,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:54:45,865 INFO L255 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 23:54:45,871 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 23:54:46,085 INFO L134 CoverageAnalysis]: Checked inductivity of 538 backedges. 337 proven. 73 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-10-13 23:54:46,086 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 23:54:46,339 INFO L134 CoverageAnalysis]: Checked inductivity of 538 backedges. 410 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-10-13 23:54:46,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214466994] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-13 23:54:46,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-13 23:54:46,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 3] total 6 [2024-10-13 23:54:46,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101618392] [2024-10-13 23:54:46,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:54:46,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 23:54:46,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:54:46,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 23:54:46,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-13 23:54:46,342 INFO L87 Difference]: Start difference. First operand 45285 states and 50587 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) [2024-10-13 23:54:49,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:54:49,100 INFO L93 Difference]: Finished difference Result 109316 states and 122119 transitions. [2024-10-13 23:54:49,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 23:54:49,101 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 328 [2024-10-13 23:54:49,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:54:49,164 INFO L225 Difference]: With dead ends: 109316 [2024-10-13 23:54:49,164 INFO L226 Difference]: Without dead ends: 64032 [2024-10-13 23:54:49,194 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 658 GetRequests, 653 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-13 23:54:49,195 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 889 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 2271 mSolverCounterSat, 598 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 2869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 598 IncrementalHoareTripleChecker+Valid, 2271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-10-13 23:54:49,196 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [889 Valid, 169 Invalid, 2869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [598 Valid, 2271 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-10-13 23:54:49,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64032 states. [2024-10-13 23:54:49,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64032 to 60202. [2024-10-13 23:54:49,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60202 states, 60201 states have (on average 1.1185196259198351) internal successors, (67336), 60201 states have internal predecessors, (67336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:49,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60202 states to 60202 states and 67336 transitions. [2024-10-13 23:54:49,913 INFO L78 Accepts]: Start accepts. Automaton has 60202 states and 67336 transitions. Word has length 328 [2024-10-13 23:54:49,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:54:49,914 INFO L471 AbstractCegarLoop]: Abstraction has 60202 states and 67336 transitions. [2024-10-13 23:54:49,914 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) [2024-10-13 23:54:49,914 INFO L276 IsEmpty]: Start isEmpty. Operand 60202 states and 67336 transitions. [2024-10-13 23:54:49,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2024-10-13 23:54:49,919 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:54:49,919 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 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] [2024-10-13 23:54:49,932 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-13 23:54:50,120 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,SelfDestructingSolverStorable13 [2024-10-13 23:54:50,121 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:54:50,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:54:50,122 INFO L85 PathProgramCache]: Analyzing trace with hash 257027118, now seen corresponding path program 1 times [2024-10-13 23:54:50,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:54:50,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953422321] [2024-10-13 23:54:50,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:54:50,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:54:50,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:54:50,583 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 326 proven. 0 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2024-10-13 23:54:50,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:54:50,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953422321] [2024-10-13 23:54:50,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953422321] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:54:50,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:54:50,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:54:50,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220742377] [2024-10-13 23:54:50,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:54:50,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:54:50,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:54:50,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:54:50,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:54:50,584 INFO L87 Difference]: Start difference. First operand 60202 states and 67336 transitions. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:52,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:54:52,060 INFO L93 Difference]: Finished difference Result 134018 states and 150108 transitions. [2024-10-13 23:54:52,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:54:52,060 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 358 [2024-10-13 23:54:52,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:54:52,136 INFO L225 Difference]: With dead ends: 134018 [2024-10-13 23:54:52,137 INFO L226 Difference]: Without dead ends: 70838 [2024-10-13 23:54:52,173 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:54:52,174 INFO L432 NwaCegarLoop]: 739 mSDtfsCounter, 390 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1179 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 796 SdHoareTripleChecker+Invalid, 1423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 1179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-13 23:54:52,174 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 796 Invalid, 1423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 1179 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-13 23:54:52,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70838 states. [2024-10-13 23:54:52,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70838 to 59738. [2024-10-13 23:54:52,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59738 states, 59737 states have (on average 1.1137653380651857) internal successors, (66533), 59737 states have internal predecessors, (66533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:53,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59738 states to 59738 states and 66533 transitions. [2024-10-13 23:54:53,018 INFO L78 Accepts]: Start accepts. Automaton has 59738 states and 66533 transitions. Word has length 358 [2024-10-13 23:54:53,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:54:53,018 INFO L471 AbstractCegarLoop]: Abstraction has 59738 states and 66533 transitions. [2024-10-13 23:54:53,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:53,018 INFO L276 IsEmpty]: Start isEmpty. Operand 59738 states and 66533 transitions. [2024-10-13 23:54:53,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2024-10-13 23:54:53,024 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:54:53,024 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:54:53,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-13 23:54:53,025 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:54:53,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:54:53,025 INFO L85 PathProgramCache]: Analyzing trace with hash -539122270, now seen corresponding path program 1 times [2024-10-13 23:54:53,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:54:53,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639026446] [2024-10-13 23:54:53,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:54:53,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:54:53,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:54:53,392 INFO L134 CoverageAnalysis]: Checked inductivity of 623 backedges. 512 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2024-10-13 23:54:53,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:54:53,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639026446] [2024-10-13 23:54:53,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639026446] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:54:53,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:54:53,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:54:53,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251513105] [2024-10-13 23:54:53,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:54:53,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:54:53,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:54:53,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:54:53,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:54:53,394 INFO L87 Difference]: Start difference. First operand 59738 states and 66533 transitions. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:55,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:54:55,066 INFO L93 Difference]: Finished difference Result 130128 states and 144807 transitions. [2024-10-13 23:54:55,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:54:55,067 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 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 399 [2024-10-13 23:54:55,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:54:55,140 INFO L225 Difference]: With dead ends: 130128 [2024-10-13 23:54:55,140 INFO L226 Difference]: Without dead ends: 69960 [2024-10-13 23:54:55,172 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:54:55,172 INFO L432 NwaCegarLoop]: 236 mSDtfsCounter, 421 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1233 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 1459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 1233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-13 23:54:55,173 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 280 Invalid, 1459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 1233 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-13 23:54:55,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69960 states. [2024-10-13 23:54:55,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69960 to 66124. [2024-10-13 23:54:55,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66124 states, 66123 states have (on average 1.1111262344418735) internal successors, (73471), 66123 states have internal predecessors, (73471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:56,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66124 states to 66124 states and 73471 transitions. [2024-10-13 23:54:56,031 INFO L78 Accepts]: Start accepts. Automaton has 66124 states and 73471 transitions. Word has length 399 [2024-10-13 23:54:56,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:54:56,031 INFO L471 AbstractCegarLoop]: Abstraction has 66124 states and 73471 transitions. [2024-10-13 23:54:56,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:56,032 INFO L276 IsEmpty]: Start isEmpty. Operand 66124 states and 73471 transitions. [2024-10-13 23:54:56,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2024-10-13 23:54:56,037 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:54:56,038 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:54:56,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-13 23:54:56,038 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:54:56,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:54:56,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1282978590, now seen corresponding path program 1 times [2024-10-13 23:54:56,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:54:56,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703927140] [2024-10-13 23:54:56,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:54:56,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:54:56,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:54:56,811 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 301 proven. 29 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2024-10-13 23:54:56,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:54:56,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703927140] [2024-10-13 23:54:56,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703927140] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 23:54:56,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587659880] [2024-10-13 23:54:56,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:54:56,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:54:56,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 23:54:56,813 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 23:54:56,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 23:54:56,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:54:56,936 INFO L255 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 23:54:56,939 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 23:54:57,236 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 387 proven. 82 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2024-10-13 23:54:57,236 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 23:54:58,188 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 387 proven. 82 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2024-10-13 23:54:58,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587659880] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 23:54:58,189 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 23:54:58,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 9 [2024-10-13 23:54:58,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998272707] [2024-10-13 23:54:58,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 23:54:58,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 23:54:58,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:54:58,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 23:54:58,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-10-13 23:54:58,194 INFO L87 Difference]: Start difference. First operand 66124 states and 73471 transitions. Second operand has 9 states, 9 states have (on average 80.33333333333333) internal successors, (723), 9 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:55:06,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:55:06,803 INFO L93 Difference]: Finished difference Result 183770 states and 202999 transitions. [2024-10-13 23:55:06,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-13 23:55:06,804 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 80.33333333333333) internal successors, (723), 9 states have internal predecessors, (723), 0 states have call successors, (0), 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 410 [2024-10-13 23:55:06,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:55:06,921 INFO L225 Difference]: With dead ends: 183770 [2024-10-13 23:55:06,921 INFO L226 Difference]: Without dead ends: 111258 [2024-10-13 23:55:06,951 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 840 GetRequests, 824 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2024-10-13 23:55:06,952 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 8286 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 7916 mSolverCounterSat, 2589 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8286 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 10505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2589 IncrementalHoareTripleChecker+Valid, 7916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2024-10-13 23:55:06,952 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8286 Valid, 286 Invalid, 10505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2589 Valid, 7916 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2024-10-13 23:55:07,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111258 states. [2024-10-13 23:55:07,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111258 to 88616. [2024-10-13 23:55:07,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88616 states, 88615 states have (on average 1.0832703266941264) internal successors, (95994), 88615 states have internal predecessors, (95994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:55:08,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88616 states to 88616 states and 95994 transitions. [2024-10-13 23:55:08,069 INFO L78 Accepts]: Start accepts. Automaton has 88616 states and 95994 transitions. Word has length 410 [2024-10-13 23:55:08,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:55:08,069 INFO L471 AbstractCegarLoop]: Abstraction has 88616 states and 95994 transitions. [2024-10-13 23:55:08,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 80.33333333333333) internal successors, (723), 9 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:55:08,070 INFO L276 IsEmpty]: Start isEmpty. Operand 88616 states and 95994 transitions. [2024-10-13 23:55:08,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2024-10-13 23:55:08,079 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:55:08,079 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-13 23:55:08,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-13 23:55:08,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:55:08,284 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:55:08,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:55:08,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1918616243, now seen corresponding path program 1 times [2024-10-13 23:55:08,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:55:08,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169080044] [2024-10-13 23:55:08,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:55:08,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:55:08,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:55:08,761 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2024-10-13 23:55:08,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:55:08,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169080044] [2024-10-13 23:55:08,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169080044] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:55:08,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:55:08,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:55:08,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516503875] [2024-10-13 23:55:08,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:55:08,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:55:08,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:55:08,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:55:08,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:55:08,764 INFO L87 Difference]: Start difference. First operand 88616 states and 95994 transitions. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:55:10,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:55:10,357 INFO L93 Difference]: Finished difference Result 174673 states and 189213 transitions. [2024-10-13 23:55:10,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:55:10,358 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 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 [2024-10-13 23:55:10,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:55:10,451 INFO L225 Difference]: With dead ends: 174673 [2024-10-13 23:55:10,451 INFO L226 Difference]: Without dead ends: 86058 [2024-10-13 23:55:10,501 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:55:10,502 INFO L432 NwaCegarLoop]: 634 mSDtfsCounter, 465 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1138 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 1258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-13 23:55:10,502 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [465 Valid, 689 Invalid, 1258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1138 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-13 23:55:10,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86058 states. [2024-10-13 23:55:11,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86058 to 84781. [2024-10-13 23:55:11,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84781 states, 84780 states have (on average 1.0677754187308328) internal successors, (90526), 84780 states have internal predecessors, (90526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:55:11,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84781 states to 84781 states and 90526 transitions. [2024-10-13 23:55:11,606 INFO L78 Accepts]: Start accepts. Automaton has 84781 states and 90526 transitions. Word has length 496 [2024-10-13 23:55:11,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:55:11,606 INFO L471 AbstractCegarLoop]: Abstraction has 84781 states and 90526 transitions. [2024-10-13 23:55:11,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:55:11,607 INFO L276 IsEmpty]: Start isEmpty. Operand 84781 states and 90526 transitions. [2024-10-13 23:55:11,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 571 [2024-10-13 23:55:11,619 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:55:11,619 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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] [2024-10-13 23:55:11,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-13 23:55:11,620 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:55:11,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:55:11,620 INFO L85 PathProgramCache]: Analyzing trace with hash 117453091, now seen corresponding path program 1 times [2024-10-13 23:55:11,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:55:11,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446854818] [2024-10-13 23:55:11,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:55:11,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:55:11,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:55:12,065 INFO L134 CoverageAnalysis]: Checked inductivity of 941 backedges. 712 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2024-10-13 23:55:12,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:55:12,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446854818] [2024-10-13 23:55:12,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446854818] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:55:12,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:55:12,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 23:55:12,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128756279] [2024-10-13 23:55:12,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:55:12,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 23:55:12,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:55:12,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 23:55:12,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 23:55:12,066 INFO L87 Difference]: Start difference. First operand 84781 states and 90526 transitions. Second operand has 4 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:55:14,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:55:14,603 INFO L93 Difference]: Finished difference Result 192122 states and 204654 transitions. [2024-10-13 23:55:14,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 23:55:14,604 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 0 states have call successors, (0), 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 570 [2024-10-13 23:55:14,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:55:14,735 INFO L225 Difference]: With dead ends: 192122 [2024-10-13 23:55:14,735 INFO L226 Difference]: Without dead ends: 107342 [2024-10-13 23:55:14,793 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 [2024-10-13 23:55:14,793 INFO L432 NwaCegarLoop]: 96 mSDtfsCounter, 738 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 2277 mSolverCounterSat, 438 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 2715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 438 IncrementalHoareTripleChecker+Valid, 2277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-10-13 23:55:14,794 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [738 Valid, 171 Invalid, 2715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [438 Valid, 2277 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-10-13 23:55:14,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107342 states. [2024-10-13 23:55:15,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107342 to 99684. [2024-10-13 23:55:16,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99684 states, 99683 states have (on average 1.0630498680818194) internal successors, (105968), 99683 states have internal predecessors, (105968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:55:16,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99684 states to 99684 states and 105968 transitions. [2024-10-13 23:55:16,114 INFO L78 Accepts]: Start accepts. Automaton has 99684 states and 105968 transitions. Word has length 570 [2024-10-13 23:55:16,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:55:16,114 INFO L471 AbstractCegarLoop]: Abstraction has 99684 states and 105968 transitions. [2024-10-13 23:55:16,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:55:16,115 INFO L276 IsEmpty]: Start isEmpty. Operand 99684 states and 105968 transitions. [2024-10-13 23:55:16,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 598 [2024-10-13 23:55:16,132 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:55:16,132 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:55:16,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-13 23:55:16,132 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:55:16,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:55:16,133 INFO L85 PathProgramCache]: Analyzing trace with hash -2026224423, now seen corresponding path program 1 times [2024-10-13 23:55:16,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:55:16,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223415165] [2024-10-13 23:55:16,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:55:16,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:55:16,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:55:17,150 INFO L134 CoverageAnalysis]: Checked inductivity of 575 backedges. 422 proven. 72 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-10-13 23:55:17,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:55:17,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223415165] [2024-10-13 23:55:17,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223415165] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 23:55:17,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370637968] [2024-10-13 23:55:17,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:55:17,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:55:17,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 23:55:17,152 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 23:55:17,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 23:55:17,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:55:17,349 INFO L255 TraceCheckSpWp]: Trace formula consists of 752 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 23:55:17,355 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 23:55:17,588 INFO L134 CoverageAnalysis]: Checked inductivity of 575 backedges. 301 proven. 29 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-10-13 23:55:17,588 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 23:55:17,743 INFO L134 CoverageAnalysis]: Checked inductivity of 575 backedges. 330 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-10-13 23:55:17,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370637968] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-13 23:55:17,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-13 23:55:17,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 8 [2024-10-13 23:55:17,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386789296] [2024-10-13 23:55:17,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:55:17,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 23:55:17,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:55:17,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 23:55:17,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-10-13 23:55:17,746 INFO L87 Difference]: Start difference. First operand 99684 states and 105968 transitions. Second operand has 4 states, 4 states have (on average 108.75) internal successors, (435), 4 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:55:20,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:55:20,702 INFO L93 Difference]: Finished difference Result 215551 states and 229226 transitions. [2024-10-13 23:55:20,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 23:55:20,703 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 108.75) internal successors, (435), 4 states have internal predecessors, (435), 0 states have call successors, (0), 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 597 [2024-10-13 23:55:20,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:55:20,829 INFO L225 Difference]: With dead ends: 215551 [2024-10-13 23:55:20,829 INFO L226 Difference]: Without dead ends: 115443 [2024-10-13 23:55:21,084 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1197 GetRequests, 1190 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-10-13 23:55:21,089 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 882 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 2224 mSolverCounterSat, 385 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 2609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 385 IncrementalHoareTripleChecker+Valid, 2224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-10-13 23:55:21,089 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [882 Valid, 156 Invalid, 2609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [385 Valid, 2224 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-10-13 23:55:21,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115443 states. [2024-10-13 23:55:22,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115443 to 110751. [2024-10-13 23:55:22,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110751 states, 110750 states have (on average 1.0643792325056434) internal successors, (117880), 110750 states have internal predecessors, (117880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:55:22,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110751 states to 110751 states and 117880 transitions. [2024-10-13 23:55:22,212 INFO L78 Accepts]: Start accepts. Automaton has 110751 states and 117880 transitions. Word has length 597 [2024-10-13 23:55:22,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:55:22,212 INFO L471 AbstractCegarLoop]: Abstraction has 110751 states and 117880 transitions. [2024-10-13 23:55:22,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 108.75) internal successors, (435), 4 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:55:22,212 INFO L276 IsEmpty]: Start isEmpty. Operand 110751 states and 117880 transitions. [2024-10-13 23:55:22,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 617 [2024-10-13 23:55:22,231 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:55:22,232 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:55:22,245 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-13 23:55:22,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:55:22,433 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:55:22,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:55:22,436 INFO L85 PathProgramCache]: Analyzing trace with hash -199451521, now seen corresponding path program 1 times [2024-10-13 23:55:22,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:55:22,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41282811] [2024-10-13 23:55:22,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:55:22,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:55:22,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:55:22,911 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 396 proven. 0 refuted. 0 times theorem prover too weak. 341 trivial. 0 not checked. [2024-10-13 23:55:22,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:55:22,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41282811] [2024-10-13 23:55:22,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41282811] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:55:22,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:55:22,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:55:22,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532899770] [2024-10-13 23:55:22,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:55:22,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:55:22,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:55:22,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:55:22,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:55:22,912 INFO L87 Difference]: Start difference. First operand 110751 states and 117880 transitions. Second operand has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:55:24,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:55:24,768 INFO L93 Difference]: Finished difference Result 221506 states and 235759 transitions. [2024-10-13 23:55:24,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:55:24,769 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 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 616 [2024-10-13 23:55:24,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:55:24,911 INFO L225 Difference]: With dead ends: 221506 [2024-10-13 23:55:24,911 INFO L226 Difference]: Without dead ends: 111181 [2024-10-13 23:55:24,953 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:55:24,953 INFO L432 NwaCegarLoop]: 622 mSDtfsCounter, 491 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 1122 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 1305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 1122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-13 23:55:24,954 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [491 Valid, 660 Invalid, 1305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 1122 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-13 23:55:25,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111181 states. [2024-10-13 23:55:26,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111181 to 109051. [2024-10-13 23:55:26,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109051 states, 109050 states have (on average 1.0607427785419532) internal successors, (115674), 109050 states have internal predecessors, (115674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:55:26,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109051 states to 109051 states and 115674 transitions. [2024-10-13 23:55:26,813 INFO L78 Accepts]: Start accepts. Automaton has 109051 states and 115674 transitions. Word has length 616 [2024-10-13 23:55:26,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:55:26,814 INFO L471 AbstractCegarLoop]: Abstraction has 109051 states and 115674 transitions. [2024-10-13 23:55:26,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:55:26,814 INFO L276 IsEmpty]: Start isEmpty. Operand 109051 states and 115674 transitions. [2024-10-13 23:55:26,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 736 [2024-10-13 23:55:26,838 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:55:26,838 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:55:26,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-13 23:55:26,839 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:55:26,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:55:26,839 INFO L85 PathProgramCache]: Analyzing trace with hash 62676241, now seen corresponding path program 1 times [2024-10-13 23:55:26,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:55:26,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862591320] [2024-10-13 23:55:26,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:55:26,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:55:26,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:55:27,434 INFO L134 CoverageAnalysis]: Checked inductivity of 734 backedges. 489 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-10-13 23:55:27,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:55:27,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862591320] [2024-10-13 23:55:27,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862591320] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:55:27,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:55:27,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 23:55:27,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986933495] [2024-10-13 23:55:27,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:55:27,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 23:55:27,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:55:27,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 23:55:27,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 23:55:27,436 INFO L87 Difference]: Start difference. First operand 109051 states and 115674 transitions. Second operand has 4 states, 4 states have (on average 143.25) internal successors, (573), 4 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:55:30,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:55:30,208 INFO L93 Difference]: Finished difference Result 245807 states and 260383 transitions. [2024-10-13 23:55:30,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 23:55:30,210 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 143.25) internal successors, (573), 4 states have internal predecessors, (573), 0 states have call successors, (0), 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 735 [2024-10-13 23:55:30,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:55:30,364 INFO L225 Difference]: With dead ends: 245807 [2024-10-13 23:55:30,364 INFO L226 Difference]: Without dead ends: 135903 [2024-10-13 23:55:30,401 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 [2024-10-13 23:55:30,406 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 741 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 2413 mSolverCounterSat, 478 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 2891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 478 IncrementalHoareTripleChecker+Valid, 2413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-10-13 23:55:30,406 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [741 Valid, 150 Invalid, 2891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [478 Valid, 2413 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-10-13 23:55:30,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135903 states. [2024-10-13 23:55:31,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135903 to 120969. [2024-10-13 23:55:31,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120969 states, 120968 states have (on average 1.0606110706963825) internal successors, (128300), 120968 states have internal predecessors, (128300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:55:32,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120969 states to 120969 states and 128300 transitions. [2024-10-13 23:55:32,366 INFO L78 Accepts]: Start accepts. Automaton has 120969 states and 128300 transitions. Word has length 735 [2024-10-13 23:55:32,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:55:32,367 INFO L471 AbstractCegarLoop]: Abstraction has 120969 states and 128300 transitions. [2024-10-13 23:55:32,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 143.25) internal successors, (573), 4 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:55:32,367 INFO L276 IsEmpty]: Start isEmpty. Operand 120969 states and 128300 transitions. [2024-10-13 23:55:32,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 770 [2024-10-13 23:55:32,408 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:55:32,408 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:55:32,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-13 23:55:32,412 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:55:32,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:55:32,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1106266181, now seen corresponding path program 1 times [2024-10-13 23:55:32,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:55:32,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904144913] [2024-10-13 23:55:32,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:55:32,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:55:32,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:55:33,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1041 backedges. 789 proven. 80 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2024-10-13 23:55:33,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:55:33,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904144913] [2024-10-13 23:55:33,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904144913] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 23:55:33,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075263509] [2024-10-13 23:55:33,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:55:33,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:55:33,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 23:55:33,673 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 23:55:33,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-13 23:55:33,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:55:33,936 INFO L255 TraceCheckSpWp]: Trace formula consists of 948 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-13 23:55:33,949 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 23:55:33,976 INFO L134 CoverageAnalysis]: Checked inductivity of 1041 backedges. 498 proven. 0 refuted. 0 times theorem prover too weak. 543 trivial. 0 not checked. [2024-10-13 23:55:33,980 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 23:55:33,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075263509] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:55:33,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 23:55:33,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-13 23:55:33,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513061651] [2024-10-13 23:55:33,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:55:33,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:55:33,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:55:33,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:55:33,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-13 23:55:33,982 INFO L87 Difference]: Start difference. First operand 120969 states and 128300 transitions. Second operand has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:55:35,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:55:35,762 INFO L93 Difference]: Finished difference Result 246205 states and 261032 transitions. [2024-10-13 23:55:35,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:55:35,765 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 769 [2024-10-13 23:55:35,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:55:35,893 INFO L225 Difference]: With dead ends: 246205 [2024-10-13 23:55:35,893 INFO L226 Difference]: Without dead ends: 125662 [2024-10-13 23:55:35,958 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 774 GetRequests, 769 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-13 23:55:35,960 INFO L432 NwaCegarLoop]: 296 mSDtfsCounter, 439 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 1172 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 1256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-13 23:55:35,960 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [439 Valid, 346 Invalid, 1256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1172 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-13 23:55:36,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125662 states. [2024-10-13 23:55:37,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125662 to 123957. [2024-10-13 23:55:37,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123957 states, 123956 states have (on average 1.0564716512310819) internal successors, (130956), 123956 states have internal predecessors, (130956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:55:37,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123957 states to 123957 states and 130956 transitions. [2024-10-13 23:55:37,687 INFO L78 Accepts]: Start accepts. Automaton has 123957 states and 130956 transitions. Word has length 769 [2024-10-13 23:55:37,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:55:37,688 INFO L471 AbstractCegarLoop]: Abstraction has 123957 states and 130956 transitions. [2024-10-13 23:55:37,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:55:37,689 INFO L276 IsEmpty]: Start isEmpty. Operand 123957 states and 130956 transitions. [2024-10-13 23:55:37,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 787 [2024-10-13 23:55:37,726 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:55:37,729 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:55:37,742 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-13 23:55:37,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-10-13 23:55:37,930 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:55:37,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:55:37,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1394843033, now seen corresponding path program 1 times [2024-10-13 23:55:37,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:55:37,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144074965] [2024-10-13 23:55:37,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:55:37,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:55:38,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat