./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_label23.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label23.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 b6a3c97d212c5da9fd8322cf568d9e152410da494dc81afa8e10ab2614b0e804 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-23 21:30:36,912 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-23 21:30:36,997 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-23 21:30:37,002 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-23 21:30:37,004 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-23 21:30:37,050 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-23 21:30:37,052 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-23 21:30:37,053 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-23 21:30:37,053 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-23 21:30:37,055 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-23 21:30:37,055 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-23 21:30:37,056 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-23 21:30:37,056 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-23 21:30:37,057 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-23 21:30:37,059 INFO L153 SettingsManager]: * Use SBE=true [2024-10-23 21:30:37,059 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-23 21:30:37,059 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-23 21:30:37,060 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-23 21:30:37,060 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-23 21:30:37,060 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-23 21:30:37,060 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-23 21:30:37,064 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-23 21:30:37,065 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-23 21:30:37,065 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-23 21:30:37,065 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-23 21:30:37,065 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-23 21:30:37,066 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-23 21:30:37,066 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-23 21:30:37,066 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-23 21:30:37,066 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-23 21:30:37,066 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-23 21:30:37,066 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-23 21:30:37,067 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 21:30:37,067 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-23 21:30:37,067 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-23 21:30:37,067 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-23 21:30:37,067 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-23 21:30:37,068 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-23 21:30:37,068 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-23 21:30:37,068 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-23 21:30:37,069 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-23 21:30:37,069 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-23 21:30:37,069 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b6a3c97d212c5da9fd8322cf568d9e152410da494dc81afa8e10ab2614b0e804 [2024-10-23 21:30:37,346 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-23 21:30:37,372 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-23 21:30:37,375 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-23 21:30:37,376 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-23 21:30:37,379 INFO L274 PluginConnector]: CDTParser initialized [2024-10-23 21:30:37,381 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label23.c [2024-10-23 21:30:38,857 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-23 21:30:39,267 INFO L384 CDTParser]: Found 1 translation units. [2024-10-23 21:30:39,268 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label23.c [2024-10-23 21:30:39,298 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86ec9279d/2af93d53939147128a80cf9feeff2349/FLAG53981301a [2024-10-23 21:30:39,437 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86ec9279d/2af93d53939147128a80cf9feeff2349 [2024-10-23 21:30:39,439 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-23 21:30:39,441 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-23 21:30:39,442 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-23 21:30:39,442 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-23 21:30:39,448 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-23 21:30:39,450 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:30:39" (1/1) ... [2024-10-23 21:30:39,451 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32394a79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:30:39, skipping insertion in model container [2024-10-23 21:30:39,451 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:30:39" (1/1) ... [2024-10-23 21:30:39,537 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-23 21:30:39,764 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_label23.c[3293,3306] [2024-10-23 21:30:40,315 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 21:30:40,337 INFO L200 MainTranslator]: Completed pre-run [2024-10-23 21:30:40,375 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_label23.c[3293,3306] [2024-10-23 21:30:40,633 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 21:30:40,655 INFO L204 MainTranslator]: Completed translation [2024-10-23 21:30:40,655 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:30:40 WrapperNode [2024-10-23 21:30:40,656 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-23 21:30:40,657 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-23 21:30:40,657 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-23 21:30:40,657 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-23 21:30:40,664 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:30:40" (1/1) ... [2024-10-23 21:30:40,720 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:30:40" (1/1) ... [2024-10-23 21:30:40,989 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2613 [2024-10-23 21:30:40,989 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-23 21:30:40,990 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-23 21:30:40,990 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-23 21:30:40,990 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-23 21:30:41,001 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:30:40" (1/1) ... [2024-10-23 21:30:41,002 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:30:40" (1/1) ... [2024-10-23 21:30:41,044 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:30:40" (1/1) ... [2024-10-23 21:30:41,258 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-23 21:30:41,258 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:30:40" (1/1) ... [2024-10-23 21:30:41,259 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:30:40" (1/1) ... [2024-10-23 21:30:41,431 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:30:40" (1/1) ... [2024-10-23 21:30:41,454 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:30:40" (1/1) ... [2024-10-23 21:30:41,493 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:30:40" (1/1) ... [2024-10-23 21:30:41,513 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:30:40" (1/1) ... [2024-10-23 21:30:41,551 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-23 21:30:41,554 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-23 21:30:41,554 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-23 21:30:41,554 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-23 21:30:41,555 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:30:40" (1/1) ... [2024-10-23 21:30:41,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 21:30:41,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:30:41,593 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-23 21:30:41,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-23 21:30:41,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-23 21:30:41,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-23 21:30:41,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-23 21:30:41,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-23 21:30:41,722 INFO L238 CfgBuilder]: Building ICFG [2024-10-23 21:30:41,725 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-23 21:30:45,111 INFO L? ?]: Removed 372 outVars from TransFormulas that were not future-live. [2024-10-23 21:30:45,112 INFO L287 CfgBuilder]: Performing block encoding [2024-10-23 21:30:45,177 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-23 21:30:45,177 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-23 21:30:45,178 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:30:45 BoogieIcfgContainer [2024-10-23 21:30:45,181 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-23 21:30:45,183 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-23 21:30:45,183 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-23 21:30:45,186 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-23 21:30:45,187 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:30:39" (1/3) ... [2024-10-23 21:30:45,188 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ad8417c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:30:45, skipping insertion in model container [2024-10-23 21:30:45,189 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:30:40" (2/3) ... [2024-10-23 21:30:45,189 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ad8417c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:30:45, skipping insertion in model container [2024-10-23 21:30:45,191 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:30:45" (3/3) ... [2024-10-23 21:30:45,192 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label23.c [2024-10-23 21:30:45,210 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-23 21:30:45,210 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-23 21:30:45,301 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-23 21:30:45,308 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;@4920866c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-23 21:30:45,309 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-23 21:30:45,317 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) [2024-10-23 21:30:45,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-10-23 21:30:45,324 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:30:45,325 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] [2024-10-23 21:30:45,327 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:30:45,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:30:45,332 INFO L85 PathProgramCache]: Analyzing trace with hash -931288269, now seen corresponding path program 1 times [2024-10-23 21:30:45,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:30:45,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873421267] [2024-10-23 21:30:45,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:30:45,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:30:45,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:30:45,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:30:45,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:30:45,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873421267] [2024-10-23 21:30:45,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873421267] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:30:45,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:30:45,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:30:45,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168753082] [2024-10-23 21:30:45,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:30:45,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-23 21:30:45,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:30:45,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-23 21:30:45,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 21:30:45,548 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 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:45,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:30:45,649 INFO L93 Difference]: Finished difference Result 1055 states and 1999 transitions. [2024-10-23 21:30:45,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-23 21:30:45,652 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2024-10-23 21:30:45,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:30:45,665 INFO L225 Difference]: With dead ends: 1055 [2024-10-23 21:30:45,666 INFO L226 Difference]: Without dead ends: 526 [2024-10-23 21:30:45,670 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 21:30:45,674 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 [2024-10-23 21:30:45,675 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] [2024-10-23 21:30:45,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2024-10-23 21:30:45,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2024-10-23 21:30:45,746 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) [2024-10-23 21:30:45,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 935 transitions. [2024-10-23 21:30:45,750 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 935 transitions. Word has length 20 [2024-10-23 21:30:45,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:30:45,750 INFO L471 AbstractCegarLoop]: Abstraction has 526 states and 935 transitions. [2024-10-23 21:30:45,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:45,751 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 935 transitions. [2024-10-23 21:30:45,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-10-23 21:30:45,752 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:30:45,752 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] [2024-10-23 21:30:45,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-23 21:30:45,752 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:30:45,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:30:45,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1134763615, now seen corresponding path program 1 times [2024-10-23 21:30:45,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:30:45,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965239976] [2024-10-23 21:30:45,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:30:45,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:30:45,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:30:45,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:30:45,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:30:45,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965239976] [2024-10-23 21:30:45,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965239976] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:30:45,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:30:45,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:30:45,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890514193] [2024-10-23 21:30:45,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:30:45,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:30:45,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:30:45,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:30:45,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:45,904 INFO L87 Difference]: Start difference. First operand 526 states and 935 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:48,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:30:48,037 INFO L93 Difference]: Finished difference Result 1499 states and 2693 transitions. [2024-10-23 21:30:48,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:30:48,037 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2024-10-23 21:30:48,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:30:48,043 INFO L225 Difference]: With dead ends: 1499 [2024-10-23 21:30:48,043 INFO L226 Difference]: Without dead ends: 974 [2024-10-23 21:30:48,045 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:48,046 INFO L432 NwaCegarLoop]: 422 mSDtfsCounter, 453 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1341 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 1666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-10-23 21:30:48,047 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 495 Invalid, 1666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1341 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-10-23 21:30:48,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2024-10-23 21:30:48,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 971. [2024-10-23 21:30:48,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 970 states have (on average 1.5082474226804123) internal successors, (1463), 970 states have internal predecessors, (1463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:48,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1463 transitions. [2024-10-23 21:30:48,092 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1463 transitions. Word has length 20 [2024-10-23 21:30:48,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:30:48,092 INFO L471 AbstractCegarLoop]: Abstraction has 971 states and 1463 transitions. [2024-10-23 21:30:48,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:48,093 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1463 transitions. [2024-10-23 21:30:48,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-10-23 21:30:48,095 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:30:48,096 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:30:48,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-23 21:30:48,096 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:30:48,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:30:48,100 INFO L85 PathProgramCache]: Analyzing trace with hash 2135768756, now seen corresponding path program 1 times [2024-10-23 21:30:48,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:30:48,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448389441] [2024-10-23 21:30:48,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:30:48,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:30:48,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:30:48,439 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:30:48,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:30:48,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448389441] [2024-10-23 21:30:48,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448389441] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:30:48,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:30:48,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:30:48,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332271163] [2024-10-23 21:30:48,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:30:48,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:30:48,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:30:48,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:30:48,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:48,443 INFO L87 Difference]: Start difference. First operand 971 states and 1463 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:50,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:30:50,748 INFO L93 Difference]: Finished difference Result 2813 states and 4241 transitions. [2024-10-23 21:30:50,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:30:50,749 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2024-10-23 21:30:50,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:30:50,757 INFO L225 Difference]: With dead ends: 2813 [2024-10-23 21:30:50,757 INFO L226 Difference]: Without dead ends: 1843 [2024-10-23 21:30:50,761 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:50,763 INFO L432 NwaCegarLoop]: 851 mSDtfsCounter, 470 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1284 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 1698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 1284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-10-23 21:30:50,766 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 918 Invalid, 1698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 1284 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-10-23 21:30:50,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1843 states. [2024-10-23 21:30:50,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1843 to 1841. [2024-10-23 21:30:50,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1841 states, 1840 states have (on average 1.3603260869565217) internal successors, (2503), 1840 states have internal predecessors, (2503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:50,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1841 states to 1841 states and 2503 transitions. [2024-10-23 21:30:50,804 INFO L78 Accepts]: Start accepts. Automaton has 1841 states and 2503 transitions. Word has length 90 [2024-10-23 21:30:50,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:30:50,805 INFO L471 AbstractCegarLoop]: Abstraction has 1841 states and 2503 transitions. [2024-10-23 21:30:50,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:50,808 INFO L276 IsEmpty]: Start isEmpty. Operand 1841 states and 2503 transitions. [2024-10-23 21:30:50,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-10-23 21:30:50,813 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:30:50,814 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:30:50,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-23 21:30:50,814 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:30:50,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:30:50,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1989015921, now seen corresponding path program 1 times [2024-10-23 21:30:50,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:30:50,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417577515] [2024-10-23 21:30:50,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:30:50,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:30:50,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:30:51,114 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:30:51,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:30:51,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417577515] [2024-10-23 21:30:51,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417577515] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:30:51,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:30:51,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:30:51,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373122473] [2024-10-23 21:30:51,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:30:51,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:30:51,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:30:51,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:30:51,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:51,117 INFO L87 Difference]: Start difference. First operand 1841 states and 2503 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:52,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:30:52,932 INFO L93 Difference]: Finished difference Result 5394 states and 7325 transitions. [2024-10-23 21:30:52,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:30:52,932 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 0 states have call successors, (0), 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 112 [2024-10-23 21:30:52,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:30:52,943 INFO L225 Difference]: With dead ends: 5394 [2024-10-23 21:30:52,944 INFO L226 Difference]: Without dead ends: 2700 [2024-10-23 21:30:52,951 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:52,952 INFO L432 NwaCegarLoop]: 514 mSDtfsCounter, 368 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 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, 1.8s IncrementalHoareTripleChecker+Time [2024-10-23 21:30:52,954 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 589 Invalid, 1630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-10-23 21:30:52,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2700 states. [2024-10-23 21:30:52,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2700 to 2700. [2024-10-23 21:30:52,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2700 states, 2699 states have (on average 1.1919229344201556) internal successors, (3217), 2699 states have internal predecessors, (3217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:53,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2700 states to 2700 states and 3217 transitions. [2024-10-23 21:30:53,005 INFO L78 Accepts]: Start accepts. Automaton has 2700 states and 3217 transitions. Word has length 112 [2024-10-23 21:30:53,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:30:53,006 INFO L471 AbstractCegarLoop]: Abstraction has 2700 states and 3217 transitions. [2024-10-23 21:30:53,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:53,006 INFO L276 IsEmpty]: Start isEmpty. Operand 2700 states and 3217 transitions. [2024-10-23 21:30:53,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-10-23 21:30:53,009 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:30:53,010 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:30:53,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-23 21:30:53,010 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:30:53,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:30:53,011 INFO L85 PathProgramCache]: Analyzing trace with hash 493723582, now seen corresponding path program 1 times [2024-10-23 21:30:53,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:30:53,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914849248] [2024-10-23 21:30:53,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:30:53,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:30:53,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:30:53,317 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:30:53,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:30:53,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914849248] [2024-10-23 21:30:53,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914849248] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:30:53,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:30:53,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:30:53,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581322058] [2024-10-23 21:30:53,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:30:53,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:30:53,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:30:53,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:30:53,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:53,323 INFO L87 Difference]: Start difference. First operand 2700 states and 3217 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:54,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:30:54,819 INFO L93 Difference]: Finished difference Result 7107 states and 8597 transitions. [2024-10-23 21:30:54,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:30:54,820 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 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 172 [2024-10-23 21:30:54,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:30:54,838 INFO L225 Difference]: With dead ends: 7107 [2024-10-23 21:30:54,838 INFO L226 Difference]: Without dead ends: 4408 [2024-10-23 21:30:54,842 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:54,845 INFO L432 NwaCegarLoop]: 724 mSDtfsCounter, 496 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1137 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 1443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-23 21:30:54,846 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 781 Invalid, 1443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1137 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-23 21:30:54,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4408 states. [2024-10-23 21:30:54,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4408 to 4408. [2024-10-23 21:30:54,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4408 states, 4407 states have (on average 1.1706376219650556) internal successors, (5159), 4407 states have internal predecessors, (5159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:54,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4408 states to 4408 states and 5159 transitions. [2024-10-23 21:30:54,918 INFO L78 Accepts]: Start accepts. Automaton has 4408 states and 5159 transitions. Word has length 172 [2024-10-23 21:30:54,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:30:54,920 INFO L471 AbstractCegarLoop]: Abstraction has 4408 states and 5159 transitions. [2024-10-23 21:30:54,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:54,921 INFO L276 IsEmpty]: Start isEmpty. Operand 4408 states and 5159 transitions. [2024-10-23 21:30:54,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-10-23 21:30:54,925 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:30:54,926 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:30:54,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-23 21:30:54,926 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:30:54,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:30:54,927 INFO L85 PathProgramCache]: Analyzing trace with hash 2002623011, now seen corresponding path program 1 times [2024-10-23 21:30:54,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:30:54,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597791984] [2024-10-23 21:30:54,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:30:54,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:30:54,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:30:55,101 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-23 21:30:55,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:30:55,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597791984] [2024-10-23 21:30:55,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597791984] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:30:55,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:30:55,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:30:55,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106045605] [2024-10-23 21:30:55,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:30:55,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:30:55,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:30:55,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:30:55,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:55,105 INFO L87 Difference]: Start difference. First operand 4408 states and 5159 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:56,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:30:56,589 INFO L93 Difference]: Finished difference Result 10935 states and 12969 transitions. [2024-10-23 21:30:56,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:30:56,590 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 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 174 [2024-10-23 21:30:56,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:30:56,613 INFO L225 Difference]: With dead ends: 10935 [2024-10-23 21:30:56,614 INFO L226 Difference]: Without dead ends: 6527 [2024-10-23 21:30:56,621 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:56,622 INFO L432 NwaCegarLoop]: 380 mSDtfsCounter, 429 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1216 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 1490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-23 21:30:56,623 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [429 Valid, 442 Invalid, 1490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1216 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-23 21:30:56,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6527 states. [2024-10-23 21:30:56,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6527 to 4381. [2024-10-23 21:30:56,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4381 states, 4380 states have (on average 1.1684931506849314) internal successors, (5118), 4380 states have internal predecessors, (5118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:56,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4381 states to 4381 states and 5118 transitions. [2024-10-23 21:30:56,712 INFO L78 Accepts]: Start accepts. Automaton has 4381 states and 5118 transitions. Word has length 174 [2024-10-23 21:30:56,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:30:56,712 INFO L471 AbstractCegarLoop]: Abstraction has 4381 states and 5118 transitions. [2024-10-23 21:30:56,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:56,713 INFO L276 IsEmpty]: Start isEmpty. Operand 4381 states and 5118 transitions. [2024-10-23 21:30:56,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2024-10-23 21:30:56,715 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:30:56,716 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:30:56,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-23 21:30:56,716 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:30:56,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:30:56,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1130893539, now seen corresponding path program 1 times [2024-10-23 21:30:56,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:30:56,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740687611] [2024-10-23 21:30:56,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:30:56,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:30:56,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:30:56,961 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-10-23 21:30:56,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:30:56,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740687611] [2024-10-23 21:30:56,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740687611] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:30:56,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:30:56,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:30:56,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172796887] [2024-10-23 21:30:56,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:30:56,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:30:56,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:30:56,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:30:56,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:56,963 INFO L87 Difference]: Start difference. First operand 4381 states and 5118 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:58,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:30:58,466 INFO L93 Difference]: Finished difference Result 10044 states and 11705 transitions. [2024-10-23 21:30:58,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:30:58,467 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 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 240 [2024-10-23 21:30:58,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:30:58,482 INFO L225 Difference]: With dead ends: 10044 [2024-10-23 21:30:58,483 INFO L226 Difference]: Without dead ends: 5664 [2024-10-23 21:30:58,487 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:58,490 INFO L432 NwaCegarLoop]: 831 mSDtfsCounter, 415 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 1343 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 1410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-23 21:30:58,490 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 891 Invalid, 1410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1343 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-23 21:30:58,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5664 states. [2024-10-23 21:30:58,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5664 to 5233. [2024-10-23 21:30:58,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5233 states, 5232 states have (on average 1.1588302752293578) internal successors, (6063), 5232 states have internal predecessors, (6063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:58,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5233 states to 5233 states and 6063 transitions. [2024-10-23 21:30:58,578 INFO L78 Accepts]: Start accepts. Automaton has 5233 states and 6063 transitions. Word has length 240 [2024-10-23 21:30:58,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:30:58,579 INFO L471 AbstractCegarLoop]: Abstraction has 5233 states and 6063 transitions. [2024-10-23 21:30:58,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:58,579 INFO L276 IsEmpty]: Start isEmpty. Operand 5233 states and 6063 transitions. [2024-10-23 21:30:58,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2024-10-23 21:30:58,582 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:30:58,583 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:30:58,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-23 21:30:58,583 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:30:58,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:30:58,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1171070593, now seen corresponding path program 1 times [2024-10-23 21:30:58,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:30:58,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511545309] [2024-10-23 21:30:58,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:30:58,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:30:58,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:30:58,760 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-10-23 21:30:58,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:30:58,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511545309] [2024-10-23 21:30:58,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511545309] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:30:58,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:30:58,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:30:58,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474979424] [2024-10-23 21:30:58,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:30:58,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:30:58,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:30:58,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:30:58,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:58,762 INFO L87 Difference]: Start difference. First operand 5233 states and 6063 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:31:00,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:31:00,311 INFO L93 Difference]: Finished difference Result 12592 states and 14782 transitions. [2024-10-23 21:31:00,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:31:00,312 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 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 252 [2024-10-23 21:31:00,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:31:00,340 INFO L225 Difference]: With dead ends: 12592 [2024-10-23 21:31:00,340 INFO L226 Difference]: Without dead ends: 6935 [2024-10-23 21:31:00,349 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:31:00,351 INFO L432 NwaCegarLoop]: 776 mSDtfsCounter, 383 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1200 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 844 SdHoareTripleChecker+Invalid, 1458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 1200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:31:00,351 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 844 Invalid, 1458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 1200 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-23 21:31:00,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6935 states. [2024-10-23 21:31:00,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6935 to 6935. [2024-10-23 21:31:00,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6935 states, 6934 states have (on average 1.1322468993366022) internal successors, (7851), 6934 states have internal predecessors, (7851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:31:00,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6935 states to 6935 states and 7851 transitions. [2024-10-23 21:31:00,470 INFO L78 Accepts]: Start accepts. Automaton has 6935 states and 7851 transitions. Word has length 252 [2024-10-23 21:31:00,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:31:00,471 INFO L471 AbstractCegarLoop]: Abstraction has 6935 states and 7851 transitions. [2024-10-23 21:31:00,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:31:00,472 INFO L276 IsEmpty]: Start isEmpty. Operand 6935 states and 7851 transitions. [2024-10-23 21:31:00,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2024-10-23 21:31:00,475 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:31:00,475 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:31:00,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-23 21:31:00,476 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:31:00,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:31:00,476 INFO L85 PathProgramCache]: Analyzing trace with hash 557252828, now seen corresponding path program 1 times [2024-10-23 21:31:00,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:31:00,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798906566] [2024-10-23 21:31:00,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:31:00,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:31:00,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:31:00,817 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2024-10-23 21:31:00,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:31:00,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798906566] [2024-10-23 21:31:00,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798906566] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:31:00,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:31:00,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:31:00,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028703424] [2024-10-23 21:31:00,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:31:00,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:31:00,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:31:00,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:31:00,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:31:00,822 INFO L87 Difference]: Start difference. First operand 6935 states and 7851 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:31:02,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:31:02,571 INFO L93 Difference]: Finished difference Result 16423 states and 18761 transitions. [2024-10-23 21:31:02,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:31:02,572 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 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 292 [2024-10-23 21:31:02,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:31:02,589 INFO L225 Difference]: With dead ends: 16423 [2024-10-23 21:31:02,590 INFO L226 Difference]: Without dead ends: 9489 [2024-10-23 21:31:02,596 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:31:02,597 INFO L432 NwaCegarLoop]: 278 mSDtfsCounter, 483 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 1201 mSolverCounterSat, 277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 1478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 277 IncrementalHoareTripleChecker+Valid, 1201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-10-23 21:31:02,597 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [483 Valid, 328 Invalid, 1478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [277 Valid, 1201 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-10-23 21:31:02,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9489 states. [2024-10-23 21:31:02,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9489 to 8635. [2024-10-23 21:31:02,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8635 states, 8634 states have (on average 1.1345842019921242) internal successors, (9796), 8634 states have internal predecessors, (9796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:31:02,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8635 states to 8635 states and 9796 transitions. [2024-10-23 21:31:02,726 INFO L78 Accepts]: Start accepts. Automaton has 8635 states and 9796 transitions. Word has length 292 [2024-10-23 21:31:02,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:31:02,726 INFO L471 AbstractCegarLoop]: Abstraction has 8635 states and 9796 transitions. [2024-10-23 21:31:02,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:31:02,727 INFO L276 IsEmpty]: Start isEmpty. Operand 8635 states and 9796 transitions. [2024-10-23 21:31:02,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2024-10-23 21:31:02,732 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:31:02,732 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:31:02,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-23 21:31:02,733 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:31:02,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:31:02,733 INFO L85 PathProgramCache]: Analyzing trace with hash -749460760, now seen corresponding path program 1 times [2024-10-23 21:31:02,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:31:02,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178037874] [2024-10-23 21:31:02,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:31:02,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:31:02,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:31:03,082 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-10-23 21:31:03,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:31:03,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178037874] [2024-10-23 21:31:03,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178037874] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:31:03,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:31:03,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:31:03,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332778622] [2024-10-23 21:31:03,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:31:03,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:31:03,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:31:03,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:31:03,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:31:03,085 INFO L87 Difference]: Start difference. First operand 8635 states and 9796 transitions. Second operand has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:31:04,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:31:04,956 INFO L93 Difference]: Finished difference Result 23688 states and 26989 transitions. [2024-10-23 21:31:04,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:31:04,957 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 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 309 [2024-10-23 21:31:04,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:31:04,986 INFO L225 Difference]: With dead ends: 23688 [2024-10-23 21:31:04,986 INFO L226 Difference]: Without dead ends: 15054 [2024-10-23 21:31:04,998 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:31:04,999 INFO L432 NwaCegarLoop]: 754 mSDtfsCounter, 480 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 1358 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 1578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 1358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-10-23 21:31:04,999 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [480 Valid, 804 Invalid, 1578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 1358 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-10-23 21:31:05,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15054 states. [2024-10-23 21:31:05,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15054 to 14181. [2024-10-23 21:31:05,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14181 states, 14180 states have (on average 1.1303244005641748) internal successors, (16028), 14180 states have internal predecessors, (16028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:31:05,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14181 states to 14181 states and 16028 transitions. [2024-10-23 21:31:05,200 INFO L78 Accepts]: Start accepts. Automaton has 14181 states and 16028 transitions. Word has length 309 [2024-10-23 21:31:05,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:31:05,201 INFO L471 AbstractCegarLoop]: Abstraction has 14181 states and 16028 transitions. [2024-10-23 21:31:05,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:31:05,201 INFO L276 IsEmpty]: Start isEmpty. Operand 14181 states and 16028 transitions. [2024-10-23 21:31:05,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2024-10-23 21:31:05,209 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:31:05,209 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:31:05,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-23 21:31:05,210 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:31:05,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:31:05,210 INFO L85 PathProgramCache]: Analyzing trace with hash -915268004, now seen corresponding path program 1 times [2024-10-23 21:31:05,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:31:05,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188513867] [2024-10-23 21:31:05,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:31:05,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:31:05,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:31:05,584 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:31:05,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:31:05,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188513867] [2024-10-23 21:31:05,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188513867] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:31:05,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:31:05,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:31:05,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804686128] [2024-10-23 21:31:05,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:31:05,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:31:05,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:31:05,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:31:05,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:31:05,587 INFO L87 Difference]: Start difference. First operand 14181 states and 16028 transitions. Second operand has 4 states, 4 states have (on average 89.75) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:31:07,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:31:07,892 INFO L93 Difference]: Finished difference Result 34770 states and 39274 transitions. [2024-10-23 21:31:07,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:31:07,893 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 89.75) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 359 [2024-10-23 21:31:07,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:31:07,929 INFO L225 Difference]: With dead ends: 34770 [2024-10-23 21:31:07,929 INFO L226 Difference]: Without dead ends: 20165 [2024-10-23 21:31:07,946 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:31:07,947 INFO L432 NwaCegarLoop]: 125 mSDtfsCounter, 649 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 2399 mSolverCounterSat, 311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 2710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 2399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-10-23 21:31:07,948 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [649 Valid, 230 Invalid, 2710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [311 Valid, 2399 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-10-23 21:31:07,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20165 states. [2024-10-23 21:31:08,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20165 to 20163. [2024-10-23 21:31:08,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20163 states, 20162 states have (on average 1.1312369804582878) internal successors, (22808), 20162 states have internal predecessors, (22808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:31:08,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20163 states to 20163 states and 22808 transitions. [2024-10-23 21:31:08,315 INFO L78 Accepts]: Start accepts. Automaton has 20163 states and 22808 transitions. Word has length 359 [2024-10-23 21:31:08,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:31:08,316 INFO L471 AbstractCegarLoop]: Abstraction has 20163 states and 22808 transitions. [2024-10-23 21:31:08,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.75) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:31:08,316 INFO L276 IsEmpty]: Start isEmpty. Operand 20163 states and 22808 transitions. [2024-10-23 21:31:08,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2024-10-23 21:31:08,326 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:31:08,326 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:31:08,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-23 21:31:08,327 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:31:08,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:31:08,327 INFO L85 PathProgramCache]: Analyzing trace with hash 596566247, now seen corresponding path program 1 times [2024-10-23 21:31:08,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:31:08,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739440490] [2024-10-23 21:31:08,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:31:08,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:31:08,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:31:08,693 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 201 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-10-23 21:31:08,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:31:08,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739440490] [2024-10-23 21:31:08,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739440490] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:31:08,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:31:08,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:31:08,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586773912] [2024-10-23 21:31:08,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:31:08,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:31:08,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:31:08,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:31:08,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:31:08,699 INFO L87 Difference]: Start difference. First operand 20163 states and 22808 transitions. Second operand has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:31:10,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:31:10,448 INFO L93 Difference]: Finished difference Result 45881 states and 51903 transitions. [2024-10-23 21:31:10,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:31:10,449 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 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 380 [2024-10-23 21:31:10,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:31:10,487 INFO L225 Difference]: With dead ends: 45881 [2024-10-23 21:31:10,487 INFO L226 Difference]: Without dead ends: 25719 [2024-10-23 21:31:10,510 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:31:10,511 INFO L432 NwaCegarLoop]: 718 mSDtfsCounter, 416 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1320 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 1563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 1320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-23 21:31:10,512 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [416 Valid, 762 Invalid, 1563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 1320 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-23 21:31:10,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25719 states. [2024-10-23 21:31:10,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25719 to 20152. [2024-10-23 21:31:10,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20152 states, 20151 states have (on average 1.131060493275768) internal successors, (22792), 20151 states have internal predecessors, (22792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:31:10,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20152 states to 20152 states and 22792 transitions. [2024-10-23 21:31:10,910 INFO L78 Accepts]: Start accepts. Automaton has 20152 states and 22792 transitions. Word has length 380 [2024-10-23 21:31:10,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:31:10,911 INFO L471 AbstractCegarLoop]: Abstraction has 20152 states and 22792 transitions. [2024-10-23 21:31:10,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:31:10,911 INFO L276 IsEmpty]: Start isEmpty. Operand 20152 states and 22792 transitions. [2024-10-23 21:31:10,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2024-10-23 21:31:10,922 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:31:10,924 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-23 21:31:10,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-23 21:31:10,924 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:31:10,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:31:10,925 INFO L85 PathProgramCache]: Analyzing trace with hash 675043986, now seen corresponding path program 1 times [2024-10-23 21:31:10,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:31:10,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279826608] [2024-10-23 21:31:10,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:31:10,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:31:10,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:31:11,203 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 236 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2024-10-23 21:31:11,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:31:11,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279826608] [2024-10-23 21:31:11,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279826608] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:31:11,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:31:11,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:31:11,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611427670] [2024-10-23 21:31:11,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:31:11,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:31:11,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:31:11,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:31:11,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:31:11,206 INFO L87 Difference]: Start difference. First operand 20152 states and 22792 transitions. Second operand has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:31:12,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:31:12,927 INFO L93 Difference]: Finished difference Result 48403 states and 54962 transitions. [2024-10-23 21:31:12,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:31:12,927 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 381 [2024-10-23 21:31:12,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:31:12,969 INFO L225 Difference]: With dead ends: 48403 [2024-10-23 21:31:12,969 INFO L226 Difference]: Without dead ends: 28252 [2024-10-23 21:31:12,984 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:31:12,985 INFO L432 NwaCegarLoop]: 201 mSDtfsCounter, 505 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 1306 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 505 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 1561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 1306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:31:12,986 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [505 Valid, 250 Invalid, 1561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 1306 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-23 21:31:13,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28252 states. [2024-10-23 21:31:13,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28252 to 28235. [2024-10-23 21:31:13,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28235 states, 28234 states have (on average 1.1271162428277963) internal successors, (31823), 28234 states have internal predecessors, (31823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:31:13,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28235 states to 28235 states and 31823 transitions. [2024-10-23 21:31:13,324 INFO L78 Accepts]: Start accepts. Automaton has 28235 states and 31823 transitions. Word has length 381 [2024-10-23 21:31:13,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:31:13,324 INFO L471 AbstractCegarLoop]: Abstraction has 28235 states and 31823 transitions. [2024-10-23 21:31:13,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:31:13,325 INFO L276 IsEmpty]: Start isEmpty. Operand 28235 states and 31823 transitions. [2024-10-23 21:31:13,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2024-10-23 21:31:13,336 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:31:13,336 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:31:13,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-23 21:31:13,336 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:31:13,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:31:13,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1895794093, now seen corresponding path program 1 times [2024-10-23 21:31:13,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:31:13,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265532826] [2024-10-23 21:31:13,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:31:13,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:31:13,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:31:14,065 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 182 proven. 82 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-23 21:31:14,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:31:14,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265532826] [2024-10-23 21:31:14,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265532826] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:31:14,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237705653] [2024-10-23 21:31:14,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:31:14,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:31:14,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:31:14,069 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 21:31:14,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-23 21:31:14,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:31:14,285 INFO L255 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-23 21:31:14,296 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:31:14,710 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 182 proven. 82 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-23 21:31:14,711 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 21:31:15,137 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 264 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-23 21:31:15,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237705653] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 21:31:15,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 21:31:15,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-10-23 21:31:15,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504360373] [2024-10-23 21:31:15,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:31:15,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:31:15,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:31:15,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:31:15,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:31:15,140 INFO L87 Difference]: Start difference. First operand 28235 states and 31823 transitions. Second operand has 4 states, 4 states have (on average 92.5) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:31:17,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:31:17,790 INFO L93 Difference]: Finished difference Result 78206 states and 87756 transitions. [2024-10-23 21:31:17,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:31:17,791 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 92.5) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 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 388 [2024-10-23 21:31:17,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:31:17,851 INFO L225 Difference]: With dead ends: 78206 [2024-10-23 21:31:17,852 INFO L226 Difference]: Without dead ends: 48266 [2024-10-23 21:31:17,875 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 777 GetRequests, 773 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:31:17,876 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 723 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 2354 mSolverCounterSat, 537 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 723 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 2891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 537 IncrementalHoareTripleChecker+Valid, 2354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-10-23 21:31:17,876 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [723 Valid, 205 Invalid, 2891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [537 Valid, 2354 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-10-23 21:31:17,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48266 states. [2024-10-23 21:31:18,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48266 to 44009. [2024-10-23 21:31:18,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44009 states, 44008 states have (on average 1.1212961279767315) internal successors, (49346), 44008 states have internal predecessors, (49346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:31:18,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44009 states to 44009 states and 49346 transitions. [2024-10-23 21:31:18,463 INFO L78 Accepts]: Start accepts. Automaton has 44009 states and 49346 transitions. Word has length 388 [2024-10-23 21:31:18,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:31:18,464 INFO L471 AbstractCegarLoop]: Abstraction has 44009 states and 49346 transitions. [2024-10-23 21:31:18,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.5) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:31:18,464 INFO L276 IsEmpty]: Start isEmpty. Operand 44009 states and 49346 transitions. [2024-10-23 21:31:18,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2024-10-23 21:31:18,476 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:31:18,476 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:31:18,495 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-23 21:31:18,677 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,SelfDestructingSolverStorable13 [2024-10-23 21:31:18,678 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:31:18,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:31:18,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1986178580, now seen corresponding path program 1 times [2024-10-23 21:31:18,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:31:18,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153892694] [2024-10-23 21:31:18,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:31:18,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:31:18,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:31:18,900 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-10-23 21:31:18,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:31:18,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153892694] [2024-10-23 21:31:18,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153892694] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:31:18,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:31:18,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:31:18,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473867863] [2024-10-23 21:31:18,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:31:18,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:31:18,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:31:18,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:31:18,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:31:18,905 INFO L87 Difference]: Start difference. First operand 44009 states and 49346 transitions. Second operand has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:31:20,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:31:20,793 INFO L93 Difference]: Finished difference Result 102048 states and 114540 transitions. [2024-10-23 21:31:20,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:31:20,793 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 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 424 [2024-10-23 21:31:20,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:31:20,865 INFO L225 Difference]: With dead ends: 102048 [2024-10-23 21:31:20,865 INFO L226 Difference]: Without dead ends: 51646 [2024-10-23 21:31:20,912 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:31:20,913 INFO L432 NwaCegarLoop]: 683 mSDtfsCounter, 499 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 1214 mSolverCounterSat, 269 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 732 SdHoareTripleChecker+Invalid, 1483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 269 IncrementalHoareTripleChecker+Valid, 1214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-23 21:31:20,914 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [499 Valid, 732 Invalid, 1483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [269 Valid, 1214 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-23 21:31:20,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51646 states. [2024-10-23 21:31:21,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51646 to 51640. [2024-10-23 21:31:21,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51640 states, 51639 states have (on average 1.1066442030248456) internal successors, (57146), 51639 states have internal predecessors, (57146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:31:21,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51640 states to 51640 states and 57146 transitions. [2024-10-23 21:31:21,794 INFO L78 Accepts]: Start accepts. Automaton has 51640 states and 57146 transitions. Word has length 424 [2024-10-23 21:31:21,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:31:21,795 INFO L471 AbstractCegarLoop]: Abstraction has 51640 states and 57146 transitions. [2024-10-23 21:31:21,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:31:21,795 INFO L276 IsEmpty]: Start isEmpty. Operand 51640 states and 57146 transitions. [2024-10-23 21:31:21,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2024-10-23 21:31:21,807 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:31:21,807 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:31:21,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-23 21:31:21,809 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:31:21,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:31:21,809 INFO L85 PathProgramCache]: Analyzing trace with hash 2026549864, now seen corresponding path program 1 times [2024-10-23 21:31:21,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:31:21,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195768369] [2024-10-23 21:31:21,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:31:21,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:31:21,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:31:22,733 INFO L134 CoverageAnalysis]: Checked inductivity of 562 backedges. 543 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-23 21:31:22,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:31:22,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195768369] [2024-10-23 21:31:22,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195768369] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:31:22,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:31:22,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-23 21:31:22,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775331130] [2024-10-23 21:31:22,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:31:22,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:31:22,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:31:22,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:31:22,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:31:22,737 INFO L87 Difference]: Start difference. First operand 51640 states and 57146 transitions. Second operand has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:31:25,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:31:25,668 INFO L93 Difference]: Finished difference Result 132681 states and 146541 transitions. [2024-10-23 21:31:25,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:31:25,669 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 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 426 [2024-10-23 21:31:25,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:31:25,749 INFO L225 Difference]: With dead ends: 132681 [2024-10-23 21:31:25,749 INFO L226 Difference]: Without dead ends: 81042 [2024-10-23 21:31:25,789 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 [2024-10-23 21:31:25,790 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 765 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 2346 mSolverCounterSat, 461 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 2807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 461 IncrementalHoareTripleChecker+Valid, 2346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:31:25,790 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [765 Valid, 171 Invalid, 2807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [461 Valid, 2346 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-10-23 21:31:25,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81042 states. [2024-10-23 21:31:26,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81042 to 77207. [2024-10-23 21:31:26,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77207 states, 77206 states have (on average 1.099163277465482) internal successors, (84862), 77206 states have internal predecessors, (84862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:31:26,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77207 states to 77207 states and 84862 transitions. [2024-10-23 21:31:26,836 INFO L78 Accepts]: Start accepts. Automaton has 77207 states and 84862 transitions. Word has length 426 [2024-10-23 21:31:26,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:31:26,836 INFO L471 AbstractCegarLoop]: Abstraction has 77207 states and 84862 transitions. [2024-10-23 21:31:26,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:31:26,837 INFO L276 IsEmpty]: Start isEmpty. Operand 77207 states and 84862 transitions. [2024-10-23 21:31:26,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2024-10-23 21:31:26,846 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:31:26,846 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:31:26,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-23 21:31:26,846 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:31:26,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:31:26,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1900155506, now seen corresponding path program 1 times [2024-10-23 21:31:26,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:31:26,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985732141] [2024-10-23 21:31:26,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:31:26,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:31:27,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:31:27,818 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 501 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2024-10-23 21:31:27,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:31:27,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985732141] [2024-10-23 21:31:27,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985732141] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:31:27,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:31:27,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:31:27,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942997366] [2024-10-23 21:31:27,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:31:27,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:31:27,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:31:27,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:31:27,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:31:27,821 INFO L87 Difference]: Start difference. First operand 77207 states and 84862 transitions. Second operand has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:31:29,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:31:29,652 INFO L93 Difference]: Finished difference Result 162092 states and 178525 transitions. [2024-10-23 21:31:29,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:31:29,653 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 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 469 [2024-10-23 21:31:29,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:31:29,761 INFO L225 Difference]: With dead ends: 162092 [2024-10-23 21:31:29,761 INFO L226 Difference]: Without dead ends: 84456 [2024-10-23 21:31:29,797 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:31:29,798 INFO L432 NwaCegarLoop]: 728 mSDtfsCounter, 335 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 1264 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 1443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 1264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-23 21:31:29,798 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 791 Invalid, 1443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 1264 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-23 21:31:29,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84456 states. [2024-10-23 21:31:30,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84456 to 81045. [2024-10-23 21:31:30,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81045 states, 81044 states have (on average 1.096478456147278) internal successors, (88863), 81044 states have internal predecessors, (88863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:31:30,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81045 states to 81045 states and 88863 transitions. [2024-10-23 21:31:30,962 INFO L78 Accepts]: Start accepts. Automaton has 81045 states and 88863 transitions. Word has length 469 [2024-10-23 21:31:30,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:31:30,962 INFO L471 AbstractCegarLoop]: Abstraction has 81045 states and 88863 transitions. [2024-10-23 21:31:30,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:31:30,963 INFO L276 IsEmpty]: Start isEmpty. Operand 81045 states and 88863 transitions. [2024-10-23 21:31:30,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2024-10-23 21:31:30,972 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:31:30,973 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:31:30,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-23 21:31:30,973 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:31:30,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:31:30,974 INFO L85 PathProgramCache]: Analyzing trace with hash -2070340046, now seen corresponding path program 1 times [2024-10-23 21:31:30,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:31:30,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591591419] [2024-10-23 21:31:30,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:31:30,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:31:31,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:31:32,307 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 267 proven. 82 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-23 21:31:32,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:31:32,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591591419] [2024-10-23 21:31:32,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591591419] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:31:32,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116063306] [2024-10-23 21:31:32,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:31:32,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:31:32,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:31:32,312 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 21:31:32,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-23 21:31:32,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:31:32,498 INFO L255 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-23 21:31:32,508 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:31:33,674 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 267 proven. 82 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-23 21:31:33,675 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 21:31:35,299 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 267 proven. 82 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-23 21:31:35,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116063306] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 21:31:35,300 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 21:31:35,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-10-23 21:31:35,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818733397] [2024-10-23 21:31:35,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 21:31:35,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-23 21:31:35,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:31:35,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-23 21:31:35,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-10-23 21:31:35,304 INFO L87 Difference]: Start difference. First operand 81045 states and 88863 transitions. Second operand has 8 states, 8 states have (on average 115.75) internal successors, (926), 7 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:31:41,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:31:41,082 INFO L93 Difference]: Finished difference Result 198687 states and 218556 transitions. [2024-10-23 21:31:41,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-23 21:31:41,083 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 115.75) internal successors, (926), 7 states have internal predecessors, (926), 0 states have call successors, (0), 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 482 [2024-10-23 21:31:41,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:31:41,212 INFO L225 Difference]: With dead ends: 198687 [2024-10-23 21:31:41,212 INFO L226 Difference]: Without dead ends: 117643 [2024-10-23 21:31:41,233 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 966 GetRequests, 959 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-10-23 21:31:41,234 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 2715 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 5231 mSolverCounterSat, 1276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2715 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 6507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1276 IncrementalHoareTripleChecker+Valid, 5231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2024-10-23 21:31:41,234 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2715 Valid, 303 Invalid, 6507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1276 Valid, 5231 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2024-10-23 21:31:41,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117643 states. [2024-10-23 21:31:42,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117643 to 102729. [2024-10-23 21:31:42,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102729 states, 102728 states have (on average 1.0995541624484075) internal successors, (112955), 102728 states have internal predecessors, (112955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:31:43,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102729 states to 102729 states and 112955 transitions. [2024-10-23 21:31:43,060 INFO L78 Accepts]: Start accepts. Automaton has 102729 states and 112955 transitions. Word has length 482 [2024-10-23 21:31:43,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:31:43,061 INFO L471 AbstractCegarLoop]: Abstraction has 102729 states and 112955 transitions. [2024-10-23 21:31:43,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 115.75) internal successors, (926), 7 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:31:43,061 INFO L276 IsEmpty]: Start isEmpty. Operand 102729 states and 112955 transitions. [2024-10-23 21:31:43,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2024-10-23 21:31:43,075 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:31:43,075 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:31:43,087 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-23 21:31:43,275 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,SelfDestructingSolverStorable17 [2024-10-23 21:31:43,276 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:31:43,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:31:43,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1018554904, now seen corresponding path program 1 times [2024-10-23 21:31:43,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:31:43,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492821974] [2024-10-23 21:31:43,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:31:43,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:31:43,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:31:44,116 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 243 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-10-23 21:31:44,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:31:44,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492821974] [2024-10-23 21:31:44,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492821974] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:31:44,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:31:44,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-23 21:31:44,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229155601] [2024-10-23 21:31:44,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:31:44,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:31:44,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:31:44,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:31:44,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:31:44,119 INFO L87 Difference]: Start difference. First operand 102729 states and 112955 transitions. Second operand has 4 states, 4 states have (on average 132.25) internal successors, (529), 4 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:31:46,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:31:46,738 INFO L93 Difference]: Finished difference Result 222501 states and 245136 transitions. [2024-10-23 21:31:46,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:31:46,739 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 132.25) internal successors, (529), 4 states have internal predecessors, (529), 0 states have call successors, (0), 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 610 [2024-10-23 21:31:46,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:31:46,882 INFO L225 Difference]: With dead ends: 222501 [2024-10-23 21:31:46,882 INFO L226 Difference]: Without dead ends: 117628 [2024-10-23 21:31:46,931 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 [2024-10-23 21:31:46,931 INFO L432 NwaCegarLoop]: 582 mSDtfsCounter, 535 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 2272 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 535 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 2526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 2272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-10-23 21:31:46,931 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [535 Valid, 674 Invalid, 2526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 2272 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-10-23 21:31:47,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117628 states. [2024-10-23 21:31:48,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117628 to 112514. [2024-10-23 21:31:48,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112514 states, 112513 states have (on average 1.0970998906792992) internal successors, (123438), 112513 states have internal predecessors, (123438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:31:48,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112514 states to 112514 states and 123438 transitions. [2024-10-23 21:31:48,945 INFO L78 Accepts]: Start accepts. Automaton has 112514 states and 123438 transitions. Word has length 610 [2024-10-23 21:31:48,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:31:48,945 INFO L471 AbstractCegarLoop]: Abstraction has 112514 states and 123438 transitions. [2024-10-23 21:31:48,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 132.25) internal successors, (529), 4 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:31:48,946 INFO L276 IsEmpty]: Start isEmpty. Operand 112514 states and 123438 transitions. [2024-10-23 21:31:48,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 616 [2024-10-23 21:31:48,959 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:31:48,959 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:31:48,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-23 21:31:48,959 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:31:48,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:31:48,960 INFO L85 PathProgramCache]: Analyzing trace with hash -261785315, now seen corresponding path program 1 times [2024-10-23 21:31:48,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:31:48,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795989092] [2024-10-23 21:31:48,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:31:48,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:31:49,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:31:49,247 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 429 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-10-23 21:31:49,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:31:49,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795989092] [2024-10-23 21:31:49,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795989092] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:31:49,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:31:49,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:31:49,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29981576] [2024-10-23 21:31:49,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:31:49,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:31:49,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:31:49,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:31:49,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:31:49,250 INFO L87 Difference]: Start difference. First operand 112514 states and 123438 transitions. Second operand has 3 states, 3 states have (on average 145.0) internal successors, (435), 3 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)