./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_label35.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_label35.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 e81bbc4430f76a90c5e02a887d03761648c221c2fd9f1be76d3af26cf9b24c3e --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-23 21:31:53,036 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-23 21:31:53,096 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-23 21:31:53,101 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-23 21:31:53,102 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-23 21:31:53,127 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-23 21:31:53,129 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-23 21:31:53,129 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-23 21:31:53,130 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-23 21:31:53,131 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-23 21:31:53,131 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-23 21:31:53,131 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-23 21:31:53,132 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-23 21:31:53,132 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-23 21:31:53,133 INFO L153 SettingsManager]: * Use SBE=true [2024-10-23 21:31:53,134 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-23 21:31:53,134 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-23 21:31:53,134 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-23 21:31:53,135 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-23 21:31:53,135 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-23 21:31:53,135 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-23 21:31:53,137 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-23 21:31:53,140 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-23 21:31:53,140 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-23 21:31:53,140 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-23 21:31:53,140 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-23 21:31:53,140 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-23 21:31:53,141 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-23 21:31:53,141 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-23 21:31:53,141 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-23 21:31:53,141 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-23 21:31:53,141 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-23 21:31:53,142 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 21:31:53,142 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-23 21:31:53,143 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-23 21:31:53,143 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-23 21:31:53,144 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-23 21:31:53,145 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-23 21:31:53,145 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-23 21:31:53,145 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-23 21:31:53,146 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-23 21:31:53,146 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-23 21:31:53,146 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e81bbc4430f76a90c5e02a887d03761648c221c2fd9f1be76d3af26cf9b24c3e [2024-10-23 21:31:53,398 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-23 21:31:53,421 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-23 21:31:53,425 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-23 21:31:53,426 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-23 21:31:53,427 INFO L274 PluginConnector]: CDTParser initialized [2024-10-23 21:31:53,428 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label35.c [2024-10-23 21:31:54,825 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-23 21:31:55,098 INFO L384 CDTParser]: Found 1 translation units. [2024-10-23 21:31:55,098 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label35.c [2024-10-23 21:31:55,123 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4609fa73c/54d86c9115ce411f9c28de110c274286/FLAG15bc0edac [2024-10-23 21:31:55,136 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4609fa73c/54d86c9115ce411f9c28de110c274286 [2024-10-23 21:31:55,138 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-23 21:31:55,139 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-23 21:31:55,141 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-23 21:31:55,142 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-23 21:31:55,146 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-23 21:31:55,146 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:31:55" (1/1) ... [2024-10-23 21:31:55,147 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2df6fded and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:31:55, skipping insertion in model container [2024-10-23 21:31:55,148 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:31:55" (1/1) ... [2024-10-23 21:31:55,249 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-23 21:31:55,391 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_label35.c[1267,1280] [2024-10-23 21:31:55,803 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 21:31:55,813 INFO L200 MainTranslator]: Completed pre-run [2024-10-23 21:31:55,823 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_label35.c[1267,1280] [2024-10-23 21:31:56,129 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 21:31:56,145 INFO L204 MainTranslator]: Completed translation [2024-10-23 21:31:56,146 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:31:56 WrapperNode [2024-10-23 21:31:56,146 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-23 21:31:56,147 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-23 21:31:56,148 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-23 21:31:56,148 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-23 21:31:56,153 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:31:56" (1/1) ... [2024-10-23 21:31:56,198 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:31:56" (1/1) ... [2024-10-23 21:31:56,355 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2613 [2024-10-23 21:31:56,356 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-23 21:31:56,356 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-23 21:31:56,357 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-23 21:31:56,357 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-23 21:31:56,365 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:31:56" (1/1) ... [2024-10-23 21:31:56,366 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:31:56" (1/1) ... [2024-10-23 21:31:56,392 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:31:56" (1/1) ... [2024-10-23 21:31:56,633 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 21:31:56,634 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:31:56" (1/1) ... [2024-10-23 21:31:56,634 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:31:56" (1/1) ... [2024-10-23 21:31:56,742 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:31:56" (1/1) ... [2024-10-23 21:31:56,760 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:31:56" (1/1) ... [2024-10-23 21:31:56,775 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:31:56" (1/1) ... [2024-10-23 21:31:56,790 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:31:56" (1/1) ... [2024-10-23 21:31:56,820 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-23 21:31:56,821 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-23 21:31:56,821 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-23 21:31:56,821 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-23 21:31:56,822 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:31:56" (1/1) ... [2024-10-23 21:31:56,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 21:31:56,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:31:56,854 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 21:31:56,856 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 21:31:56,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-23 21:31:56,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-23 21:31:56,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-23 21:31:56,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-23 21:31:56,955 INFO L238 CfgBuilder]: Building ICFG [2024-10-23 21:31:56,956 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-23 21:31:59,430 INFO L? ?]: Removed 372 outVars from TransFormulas that were not future-live. [2024-10-23 21:31:59,431 INFO L287 CfgBuilder]: Performing block encoding [2024-10-23 21:31:59,475 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-23 21:31:59,478 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-23 21:31:59,479 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:31:59 BoogieIcfgContainer [2024-10-23 21:31:59,479 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-23 21:31:59,481 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-23 21:31:59,481 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-23 21:31:59,483 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-23 21:31:59,484 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:31:55" (1/3) ... [2024-10-23 21:31:59,484 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@392f6aa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:31:59, skipping insertion in model container [2024-10-23 21:31:59,484 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:31:56" (2/3) ... [2024-10-23 21:31:59,485 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@392f6aa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:31:59, skipping insertion in model container [2024-10-23 21:31:59,485 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:31:59" (3/3) ... [2024-10-23 21:31:59,486 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label35.c [2024-10-23 21:31:59,499 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-23 21:31:59,499 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-23 21:31:59,555 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-23 21:31:59,560 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;@66fde81e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-23 21:31:59,560 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-23 21:31:59,564 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 21:31:59,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-10-23 21:31:59,569 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:31:59,569 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-23 21:31:59,569 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:31:59,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:31:59,573 INFO L85 PathProgramCache]: Analyzing trace with hash -28674423, now seen corresponding path program 1 times [2024-10-23 21:31:59,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:31:59,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058648140] [2024-10-23 21:31:59,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:31:59,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:31:59,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:31:59,714 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 21:31:59,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:31:59,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058648140] [2024-10-23 21:31:59,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058648140] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:31:59,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:31:59,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:31:59,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130774014] [2024-10-23 21:31:59,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:31:59,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:31:59,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:31:59,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:31:59,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:31:59,741 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 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 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 21:32:01,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:32:01,890 INFO L93 Difference]: Finished difference Result 1507 states and 2892 transitions. [2024-10-23 21:32:01,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:32:01,897 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2024-10-23 21:32:01,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:32:01,912 INFO L225 Difference]: With dead ends: 1507 [2024-10-23 21:32:01,912 INFO L226 Difference]: Without dead ends: 976 [2024-10-23 21:32:01,916 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 21:32:01,918 INFO L432 NwaCegarLoop]: 374 mSDtfsCounter, 467 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 1400 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 1685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 1400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-10-23 21:32:01,919 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [467 Valid, 450 Invalid, 1685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 1400 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-10-23 21:32:01,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2024-10-23 21:32:01,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 970. [2024-10-23 21:32:01,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 970 states, 969 states have (on average 1.5541795665634675) internal successors, (1506), 969 states have internal predecessors, (1506), 0 states have call successors, (0), 0 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 21:32:01,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1506 transitions. [2024-10-23 21:32:01,998 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1506 transitions. Word has length 6 [2024-10-23 21:32:01,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:32:01,999 INFO L471 AbstractCegarLoop]: Abstraction has 970 states and 1506 transitions. [2024-10-23 21:32:01,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 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 21:32:01,999 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1506 transitions. [2024-10-23 21:32:02,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-10-23 21:32:02,004 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:32:02,004 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-23 21:32:02,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-23 21:32:02,005 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:32:02,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:32:02,005 INFO L85 PathProgramCache]: Analyzing trace with hash 884233218, now seen corresponding path program 1 times [2024-10-23 21:32:02,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:32:02,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238921673] [2024-10-23 21:32:02,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:32:02,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:32:02,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:32:02,192 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:32:02,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:32:02,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238921673] [2024-10-23 21:32:02,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238921673] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:32:02,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:32:02,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:32:02,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065626403] [2024-10-23 21:32:02,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:32:02,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:32:02,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:32:02,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:32:02,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:32:02,196 INFO L87 Difference]: Start difference. First operand 970 states and 1506 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 0 states have call successors, (0), 0 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 21:32:04,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:32:04,155 INFO L93 Difference]: Finished difference Result 2812 states and 4380 transitions. [2024-10-23 21:32:04,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:32:04,155 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2024-10-23 21:32:04,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:32:04,161 INFO L225 Difference]: With dead ends: 2812 [2024-10-23 21:32:04,161 INFO L226 Difference]: Without dead ends: 1843 [2024-10-23 21:32:04,163 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 21:32:04,164 INFO L432 NwaCegarLoop]: 504 mSDtfsCounter, 405 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1382 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 1707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-10-23 21:32:04,164 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 577 Invalid, 1707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1382 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-10-23 21:32:04,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1843 states. [2024-10-23 21:32:04,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1843 to 1840. [2024-10-23 21:32:04,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1840 states, 1839 states have (on average 1.3501903208265362) internal successors, (2483), 1839 states have internal predecessors, (2483), 0 states have call successors, (0), 0 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 21:32:04,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1840 states to 1840 states and 2483 transitions. [2024-10-23 21:32:04,203 INFO L78 Accepts]: Start accepts. Automaton has 1840 states and 2483 transitions. Word has length 73 [2024-10-23 21:32:04,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:32:04,203 INFO L471 AbstractCegarLoop]: Abstraction has 1840 states and 2483 transitions. [2024-10-23 21:32:04,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 0 states have call successors, (0), 0 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 21:32:04,204 INFO L276 IsEmpty]: Start isEmpty. Operand 1840 states and 2483 transitions. [2024-10-23 21:32:04,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-10-23 21:32:04,205 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:32:04,205 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-23 21:32:04,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-23 21:32:04,206 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:32:04,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:32:04,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1019077052, now seen corresponding path program 1 times [2024-10-23 21:32:04,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:32:04,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390574186] [2024-10-23 21:32:04,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:32:04,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:32:04,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:32:04,383 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:32:04,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:32:04,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390574186] [2024-10-23 21:32:04,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390574186] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:32:04,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:32:04,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:32:04,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050610814] [2024-10-23 21:32:04,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:32:04,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:32:04,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:32:04,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:32:04,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:32:04,386 INFO L87 Difference]: Start difference. First operand 1840 states and 2483 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 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 21:32:06,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:32:06,199 INFO L93 Difference]: Finished difference Result 4551 states and 6281 transitions. [2024-10-23 21:32:06,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:32:06,200 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2024-10-23 21:32:06,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:32:06,207 INFO L225 Difference]: With dead ends: 4551 [2024-10-23 21:32:06,207 INFO L226 Difference]: Without dead ends: 2712 [2024-10-23 21:32:06,209 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 21:32:06,210 INFO L432 NwaCegarLoop]: 816 mSDtfsCounter, 500 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1265 mSolverCounterSat, 415 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 883 SdHoareTripleChecker+Invalid, 1680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 415 IncrementalHoareTripleChecker+Valid, 1265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-10-23 21:32:06,210 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [500 Valid, 883 Invalid, 1680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [415 Valid, 1265 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-10-23 21:32:06,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2712 states. [2024-10-23 21:32:06,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2712 to 2710. [2024-10-23 21:32:06,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2710 states, 2709 states have (on average 1.3004798818752308) internal successors, (3523), 2709 states have internal predecessors, (3523), 0 states have call successors, (0), 0 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 21:32:06,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2710 states to 2710 states and 3523 transitions. [2024-10-23 21:32:06,244 INFO L78 Accepts]: Start accepts. Automaton has 2710 states and 3523 transitions. Word has length 76 [2024-10-23 21:32:06,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:32:06,246 INFO L471 AbstractCegarLoop]: Abstraction has 2710 states and 3523 transitions. [2024-10-23 21:32:06,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 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 21:32:06,248 INFO L276 IsEmpty]: Start isEmpty. Operand 2710 states and 3523 transitions. [2024-10-23 21:32:06,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-10-23 21:32:06,254 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:32:06,254 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-23 21:32:06,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-23 21:32:06,254 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:32:06,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:32:06,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1451564948, now seen corresponding path program 1 times [2024-10-23 21:32:06,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:32:06,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688844391] [2024-10-23 21:32:06,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:32:06,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:32:06,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:32:06,526 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-10-23 21:32:06,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:32:06,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688844391] [2024-10-23 21:32:06,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688844391] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:32:06,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:32:06,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:32:06,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707603058] [2024-10-23 21:32:06,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:32:06,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:32:06,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:32:06,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:32:06,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:32:06,532 INFO L87 Difference]: Start difference. First operand 2710 states and 3523 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 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 21:32:08,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:32:08,180 INFO L93 Difference]: Finished difference Result 7983 states and 10360 transitions. [2024-10-23 21:32:08,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:32:08,181 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 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 145 [2024-10-23 21:32:08,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:32:08,192 INFO L225 Difference]: With dead ends: 7983 [2024-10-23 21:32:08,193 INFO L226 Difference]: Without dead ends: 4420 [2024-10-23 21:32:08,196 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 21:32:08,197 INFO L432 NwaCegarLoop]: 514 mSDtfsCounter, 386 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 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, 1.6s IncrementalHoareTripleChecker+Time [2024-10-23 21:32:08,197 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 589 Invalid, 1630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-23 21:32:08,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4420 states. [2024-10-23 21:32:08,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4420 to 3570. [2024-10-23 21:32:08,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3570 states, 3569 states have (on average 1.177640795741104) internal successors, (4203), 3569 states have internal predecessors, (4203), 0 states have call successors, (0), 0 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 21:32:08,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3570 states to 3570 states and 4203 transitions. [2024-10-23 21:32:08,240 INFO L78 Accepts]: Start accepts. Automaton has 3570 states and 4203 transitions. Word has length 145 [2024-10-23 21:32:08,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:32:08,240 INFO L471 AbstractCegarLoop]: Abstraction has 3570 states and 4203 transitions. [2024-10-23 21:32:08,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 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 21:32:08,240 INFO L276 IsEmpty]: Start isEmpty. Operand 3570 states and 4203 transitions. [2024-10-23 21:32:08,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-10-23 21:32:08,242 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:32:08,242 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-23 21:32:08,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-23 21:32:08,243 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:32:08,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:32:08,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1408080026, now seen corresponding path program 1 times [2024-10-23 21:32:08,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:32:08,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893580553] [2024-10-23 21:32:08,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:32:08,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:32:08,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:32:08,449 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:32:08,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:32:08,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893580553] [2024-10-23 21:32:08,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893580553] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:32:08,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:32:08,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:32:08,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666178166] [2024-10-23 21:32:08,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:32:08,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:32:08,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:32:08,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:32:08,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:32:08,454 INFO L87 Difference]: Start difference. First operand 3570 states and 4203 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 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 21:32:09,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:32:09,836 INFO L93 Difference]: Finished difference Result 9272 states and 11086 transitions. [2024-10-23 21:32:09,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:32:09,838 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 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 158 [2024-10-23 21:32:09,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:32:09,851 INFO L225 Difference]: With dead ends: 9272 [2024-10-23 21:32:09,852 INFO L226 Difference]: Without dead ends: 5703 [2024-10-23 21:32:09,856 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 21:32:09,856 INFO L432 NwaCegarLoop]: 724 mSDtfsCounter, 496 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1137 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s 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, 1.3s IncrementalHoareTripleChecker+Time [2024-10-23 21:32:09,857 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 781 Invalid, 1443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1137 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-23 21:32:09,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5703 states. [2024-10-23 21:32:09,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5703 to 5703. [2024-10-23 21:32:09,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5703 states, 5702 states have (on average 1.1595931252192213) internal successors, (6612), 5702 states have internal predecessors, (6612), 0 states have call successors, (0), 0 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 21:32:09,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5703 states to 5703 states and 6612 transitions. [2024-10-23 21:32:09,923 INFO L78 Accepts]: Start accepts. Automaton has 5703 states and 6612 transitions. Word has length 158 [2024-10-23 21:32:09,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:32:09,923 INFO L471 AbstractCegarLoop]: Abstraction has 5703 states and 6612 transitions. [2024-10-23 21:32:09,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 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 21:32:09,924 INFO L276 IsEmpty]: Start isEmpty. Operand 5703 states and 6612 transitions. [2024-10-23 21:32:09,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-10-23 21:32:09,925 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:32:09,925 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:32:09,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-23 21:32:09,925 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:32:09,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:32:09,926 INFO L85 PathProgramCache]: Analyzing trace with hash -2014099829, now seen corresponding path program 1 times [2024-10-23 21:32:09,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:32:09,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688852889] [2024-10-23 21:32:09,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:32:09,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:32:09,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:32:10,060 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-23 21:32:10,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:32:10,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688852889] [2024-10-23 21:32:10,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688852889] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:32:10,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:32:10,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:32:10,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234625641] [2024-10-23 21:32:10,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:32:10,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:32:10,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:32:10,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:32:10,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:32:10,063 INFO L87 Difference]: Start difference. First operand 5703 states and 6612 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:32:11,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:32:11,555 INFO L93 Difference]: Finished difference Result 14375 states and 16775 transitions. [2024-10-23 21:32:11,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:32:11,556 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2024-10-23 21:32:11,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:32:11,580 INFO L225 Difference]: With dead ends: 14375 [2024-10-23 21:32:11,580 INFO L226 Difference]: Without dead ends: 8672 [2024-10-23 21:32:11,586 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 21:32:11,588 INFO L432 NwaCegarLoop]: 380 mSDtfsCounter, 443 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1216 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 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 21:32:11,590 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [443 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 21:32:11,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8672 states. [2024-10-23 21:32:11,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8672 to 5676. [2024-10-23 21:32:11,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5676 states, 5675 states have (on average 1.157885462555066) internal successors, (6571), 5675 states have internal predecessors, (6571), 0 states have call successors, (0), 0 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 21:32:11,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5676 states to 5676 states and 6571 transitions. [2024-10-23 21:32:11,664 INFO L78 Accepts]: Start accepts. Automaton has 5676 states and 6571 transitions. Word has length 160 [2024-10-23 21:32:11,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:32:11,665 INFO L471 AbstractCegarLoop]: Abstraction has 5676 states and 6571 transitions. [2024-10-23 21:32:11,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:32:11,665 INFO L276 IsEmpty]: Start isEmpty. Operand 5676 states and 6571 transitions. [2024-10-23 21:32:11,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2024-10-23 21:32:11,667 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:32:11,667 INFO L215 NwaCegarLoop]: trace histogram [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, 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 21:32:11,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-23 21:32:11,667 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:32:11,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:32:11,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1323127433, now seen corresponding path program 1 times [2024-10-23 21:32:11,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:32:11,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876638983] [2024-10-23 21:32:11,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:32:11,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:32:11,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:32:11,828 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2024-10-23 21:32:11,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:32:11,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876638983] [2024-10-23 21:32:11,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876638983] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:32:11,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:32:11,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:32:11,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118919582] [2024-10-23 21:32:11,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:32:11,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:32:11,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:32:11,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:32:11,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:32:11,830 INFO L87 Difference]: Start difference. First operand 5676 states and 6571 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 21:32:13,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:32:13,544 INFO L93 Difference]: Finished difference Result 14314 states and 16679 transitions. [2024-10-23 21:32:13,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:32:13,545 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 238 [2024-10-23 21:32:13,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:32:13,561 INFO L225 Difference]: With dead ends: 14314 [2024-10-23 21:32:13,561 INFO L226 Difference]: Without dead ends: 7789 [2024-10-23 21:32:13,571 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 21:32:13,572 INFO L432 NwaCegarLoop]: 776 mSDtfsCounter, 383 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1200 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s 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, 1.6s IncrementalHoareTripleChecker+Time [2024-10-23 21:32:13,574 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 844 Invalid, 1458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 1200 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-23 21:32:13,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7789 states. [2024-10-23 21:32:13,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7789 to 7789. [2024-10-23 21:32:13,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7789 states, 7788 states have (on average 1.11864406779661) internal successors, (8712), 7788 states have internal predecessors, (8712), 0 states have call successors, (0), 0 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 21:32:13,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7789 states to 7789 states and 8712 transitions. [2024-10-23 21:32:13,679 INFO L78 Accepts]: Start accepts. Automaton has 7789 states and 8712 transitions. Word has length 238 [2024-10-23 21:32:13,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:32:13,680 INFO L471 AbstractCegarLoop]: Abstraction has 7789 states and 8712 transitions. [2024-10-23 21:32:13,680 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 21:32:13,680 INFO L276 IsEmpty]: Start isEmpty. Operand 7789 states and 8712 transitions. [2024-10-23 21:32:13,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2024-10-23 21:32:13,683 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:32:13,683 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 21:32:13,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-23 21:32:13,684 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:32:13,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:32:13,684 INFO L85 PathProgramCache]: Analyzing trace with hash 842591716, now seen corresponding path program 1 times [2024-10-23 21:32:13,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:32:13,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516751163] [2024-10-23 21:32:13,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:32:13,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:32:13,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:32:13,829 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2024-10-23 21:32:13,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:32:13,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516751163] [2024-10-23 21:32:13,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516751163] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:32:13,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:32:13,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:32:13,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633147527] [2024-10-23 21:32:13,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:32:13,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:32:13,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:32:13,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:32:13,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:32:13,831 INFO L87 Difference]: Start difference. First operand 7789 states and 8712 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 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 21:32:15,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:32:15,320 INFO L93 Difference]: Finished difference Result 18558 states and 20912 transitions. [2024-10-23 21:32:15,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:32:15,321 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 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 278 [2024-10-23 21:32:15,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:32:15,343 INFO L225 Difference]: With dead ends: 18558 [2024-10-23 21:32:15,344 INFO L226 Difference]: Without dead ends: 10770 [2024-10-23 21:32:15,351 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 21:32:15,351 INFO L432 NwaCegarLoop]: 345 mSDtfsCounter, 464 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1218 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 1485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 1218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-23 21:32:15,351 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [464 Valid, 400 Invalid, 1485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 1218 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-23 21:32:15,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10770 states. [2024-10-23 21:32:15,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10770 to 9915. [2024-10-23 21:32:15,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9915 states, 9914 states have (on average 1.1194270728263063) internal successors, (11098), 9914 states have internal predecessors, (11098), 0 states have call successors, (0), 0 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 21:32:15,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9915 states to 9915 states and 11098 transitions. [2024-10-23 21:32:15,445 INFO L78 Accepts]: Start accepts. Automaton has 9915 states and 11098 transitions. Word has length 278 [2024-10-23 21:32:15,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:32:15,445 INFO L471 AbstractCegarLoop]: Abstraction has 9915 states and 11098 transitions. [2024-10-23 21:32:15,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 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 21:32:15,447 INFO L276 IsEmpty]: Start isEmpty. Operand 9915 states and 11098 transitions. [2024-10-23 21:32:15,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2024-10-23 21:32:15,450 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:32:15,451 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:32:15,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-23 21:32:15,451 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:32:15,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:32:15,451 INFO L85 PathProgramCache]: Analyzing trace with hash 140259748, now seen corresponding path program 1 times [2024-10-23 21:32:15,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:32:15,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197224916] [2024-10-23 21:32:15,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:32:15,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:32:15,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:32:15,738 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:32:15,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:32:15,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197224916] [2024-10-23 21:32:15,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197224916] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:32:15,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:32:15,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:32:15,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786308692] [2024-10-23 21:32:15,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:32:15,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:32:15,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:32:15,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:32:15,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:32:15,741 INFO L87 Difference]: Start difference. First operand 9915 states and 11098 transitions. Second operand has 4 states, 4 states have (on average 86.25) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 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 21:32:17,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:32:17,921 INFO L93 Difference]: Finished difference Result 26238 states and 29413 transitions. [2024-10-23 21:32:17,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:32:17,922 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 86.25) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 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 345 [2024-10-23 21:32:17,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:32:17,946 INFO L225 Difference]: With dead ends: 26238 [2024-10-23 21:32:17,946 INFO L226 Difference]: Without dead ends: 15899 [2024-10-23 21:32:17,956 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 21:32:17,956 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 668 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 2368 mSolverCounterSat, 330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 668 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 2698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 2368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-10-23 21:32:17,957 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [668 Valid, 194 Invalid, 2698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 2368 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-10-23 21:32:17,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15899 states. [2024-10-23 21:32:18,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15899 to 15897. [2024-10-23 21:32:18,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15897 states, 15896 states have (on average 1.1247483643683946) internal successors, (17879), 15896 states have internal predecessors, (17879), 0 states have call successors, (0), 0 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 21:32:18,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15897 states to 15897 states and 17879 transitions. [2024-10-23 21:32:18,090 INFO L78 Accepts]: Start accepts. Automaton has 15897 states and 17879 transitions. Word has length 345 [2024-10-23 21:32:18,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:32:18,091 INFO L471 AbstractCegarLoop]: Abstraction has 15897 states and 17879 transitions. [2024-10-23 21:32:18,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.25) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 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 21:32:18,091 INFO L276 IsEmpty]: Start isEmpty. Operand 15897 states and 17879 transitions. [2024-10-23 21:32:18,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2024-10-23 21:32:18,096 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:32:18,097 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-23 21:32:18,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-23 21:32:18,097 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:32:18,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:32:18,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1381349451, now seen corresponding path program 1 times [2024-10-23 21:32:18,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:32:18,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253342363] [2024-10-23 21:32:18,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:32:18,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:32:18,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:32:18,324 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 218 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2024-10-23 21:32:18,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:32:18,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253342363] [2024-10-23 21:32:18,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253342363] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:32:18,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:32:18,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:32:18,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366335813] [2024-10-23 21:32:18,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:32:18,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:32:18,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:32:18,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:32:18,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:32:18,328 INFO L87 Difference]: Start difference. First operand 15897 states and 17879 transitions. Second operand has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 0 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 21:32:19,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:32:19,906 INFO L93 Difference]: Finished difference Result 44147 states and 49783 transitions. [2024-10-23 21:32:19,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:32:19,907 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 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 379 [2024-10-23 21:32:19,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:32:19,941 INFO L225 Difference]: With dead ends: 44147 [2024-10-23 21:32:19,941 INFO L226 Difference]: Without dead ends: 28251 [2024-10-23 21:32:19,956 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 21:32:19,956 INFO L432 NwaCegarLoop]: 237 mSDtfsCounter, 496 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 1318 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 1560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 1318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-23 21:32:19,957 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 285 Invalid, 1560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [242 Valid, 1318 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-23 21:32:19,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28251 states. [2024-10-23 21:32:20,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28251 to 27808. [2024-10-23 21:32:20,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27808 states, 27807 states have (on average 1.1171647426906894) internal successors, (31065), 27807 states have internal predecessors, (31065), 0 states have call successors, (0), 0 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 21:32:20,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27808 states to 27808 states and 31065 transitions. [2024-10-23 21:32:20,215 INFO L78 Accepts]: Start accepts. Automaton has 27808 states and 31065 transitions. Word has length 379 [2024-10-23 21:32:20,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:32:20,369 INFO L471 AbstractCegarLoop]: Abstraction has 27808 states and 31065 transitions. [2024-10-23 21:32:20,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 0 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 21:32:20,369 INFO L276 IsEmpty]: Start isEmpty. Operand 27808 states and 31065 transitions. [2024-10-23 21:32:20,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2024-10-23 21:32:20,377 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:32:20,378 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:32:20,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-23 21:32:20,378 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:32:20,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:32:20,380 INFO L85 PathProgramCache]: Analyzing trace with hash -293304718, now seen corresponding path program 1 times [2024-10-23 21:32:20,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:32:20,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239323087] [2024-10-23 21:32:20,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:32:20,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:32:20,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:32:20,639 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-10-23 21:32:20,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:32:20,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239323087] [2024-10-23 21:32:20,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239323087] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:32:20,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:32:20,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:32:20,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813379404] [2024-10-23 21:32:20,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:32:20,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:32:20,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:32:20,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:32:20,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:32:20,641 INFO L87 Difference]: Start difference. First operand 27808 states and 31065 transitions. Second operand has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 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 21:32:22,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:32:22,197 INFO L93 Difference]: Finished difference Result 62013 states and 69500 transitions. [2024-10-23 21:32:22,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:32:22,198 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 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 392 [2024-10-23 21:32:22,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:32:22,237 INFO L225 Difference]: With dead ends: 62013 [2024-10-23 21:32:22,237 INFO L226 Difference]: Without dead ends: 32501 [2024-10-23 21:32:22,258 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 21:32:22,259 INFO L432 NwaCegarLoop]: 772 mSDtfsCounter, 465 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1299 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 1488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 1299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-23 21:32:22,259 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [465 Valid, 839 Invalid, 1488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 1299 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-23 21:32:22,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32501 states. [2024-10-23 21:32:22,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32501 to 32495. [2024-10-23 21:32:22,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32495 states, 32494 states have (on average 1.1129439281098048) internal successors, (36164), 32494 states have internal predecessors, (36164), 0 states have call successors, (0), 0 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 21:32:22,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32495 states to 32495 states and 36164 transitions. [2024-10-23 21:32:22,896 INFO L78 Accepts]: Start accepts. Automaton has 32495 states and 36164 transitions. Word has length 392 [2024-10-23 21:32:22,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:32:22,897 INFO L471 AbstractCegarLoop]: Abstraction has 32495 states and 36164 transitions. [2024-10-23 21:32:22,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 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 21:32:22,897 INFO L276 IsEmpty]: Start isEmpty. Operand 32495 states and 36164 transitions. [2024-10-23 21:32:22,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2024-10-23 21:32:22,910 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:32:22,911 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-23 21:32:22,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-23 21:32:22,911 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:32:22,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:32:22,912 INFO L85 PathProgramCache]: Analyzing trace with hash 471280211, now seen corresponding path program 1 times [2024-10-23 21:32:22,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:32:22,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724167824] [2024-10-23 21:32:22,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:32:22,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:32:22,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:32:23,230 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2024-10-23 21:32:23,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:32:23,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724167824] [2024-10-23 21:32:23,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724167824] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:32:23,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:32:23,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:32:23,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403427911] [2024-10-23 21:32:23,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:32:23,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:32:23,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:32:23,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:32:23,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:32:23,232 INFO L87 Difference]: Start difference. First operand 32495 states and 36164 transitions. Second operand has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 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 21:32:24,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:32:24,808 INFO L93 Difference]: Finished difference Result 77800 states and 86692 transitions. [2024-10-23 21:32:24,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:32:24,809 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 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 441 [2024-10-23 21:32:24,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:32:24,858 INFO L225 Difference]: With dead ends: 77800 [2024-10-23 21:32:24,858 INFO L226 Difference]: Without dead ends: 45306 [2024-10-23 21:32:24,880 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 21:32:24,881 INFO L432 NwaCegarLoop]: 697 mSDtfsCounter, 497 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 1337 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 751 SdHoareTripleChecker+Invalid, 1545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 1337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-23 21:32:24,881 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [497 Valid, 751 Invalid, 1545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 1337 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-23 21:32:24,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45306 states. [2024-10-23 21:32:25,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45306 to 43579. [2024-10-23 21:32:25,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43579 states, 43578 states have (on average 1.1083344807012714) internal successors, (48299), 43578 states have internal predecessors, (48299), 0 states have call successors, (0), 0 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 21:32:25,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43579 states to 43579 states and 48299 transitions. [2024-10-23 21:32:25,248 INFO L78 Accepts]: Start accepts. Automaton has 43579 states and 48299 transitions. Word has length 441 [2024-10-23 21:32:25,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:32:25,249 INFO L471 AbstractCegarLoop]: Abstraction has 43579 states and 48299 transitions. [2024-10-23 21:32:25,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 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 21:32:25,250 INFO L276 IsEmpty]: Start isEmpty. Operand 43579 states and 48299 transitions. [2024-10-23 21:32:25,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2024-10-23 21:32:25,259 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:32:25,259 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-23 21:32:25,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-23 21:32:25,259 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:32:25,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:32:25,260 INFO L85 PathProgramCache]: Analyzing trace with hash 728425863, now seen corresponding path program 1 times [2024-10-23 21:32:25,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:32:25,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783454518] [2024-10-23 21:32:25,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:32:25,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:32:25,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:32:25,739 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 283 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:32:25,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:32:25,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783454518] [2024-10-23 21:32:25,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783454518] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:32:25,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:32:25,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-23 21:32:25,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461034838] [2024-10-23 21:32:25,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:32:25,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:32:25,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:32:25,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:32:25,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:32:25,742 INFO L87 Difference]: Start difference. First operand 43579 states and 48299 transitions. Second operand has 4 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 0 states have call successors, (0), 0 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 21:32:28,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:32:28,404 INFO L93 Difference]: Finished difference Result 107191 states and 118515 transitions. [2024-10-23 21:32:28,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:32:28,404 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 0 states have call successors, (0), 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 449 [2024-10-23 21:32:28,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:32:28,498 INFO L225 Difference]: With dead ends: 107191 [2024-10-23 21:32:28,498 INFO L226 Difference]: Without dead ends: 63613 [2024-10-23 21:32:28,549 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 21:32:28,554 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 666 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 2389 mSolverCounterSat, 455 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 666 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 2844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 455 IncrementalHoareTripleChecker+Valid, 2389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-10-23 21:32:28,554 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [666 Valid, 187 Invalid, 2844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [455 Valid, 2389 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-10-23 21:32:28,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63613 states. [2024-10-23 21:32:29,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63613 to 58070. [2024-10-23 21:32:29,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58070 states, 58069 states have (on average 1.106890079043896) internal successors, (64276), 58069 states have internal predecessors, (64276), 0 states have call successors, (0), 0 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 21:32:29,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58070 states to 58070 states and 64276 transitions. [2024-10-23 21:32:29,259 INFO L78 Accepts]: Start accepts. Automaton has 58070 states and 64276 transitions. Word has length 449 [2024-10-23 21:32:29,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:32:29,259 INFO L471 AbstractCegarLoop]: Abstraction has 58070 states and 64276 transitions. [2024-10-23 21:32:29,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 0 states have call successors, (0), 0 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 21:32:29,260 INFO L276 IsEmpty]: Start isEmpty. Operand 58070 states and 64276 transitions. [2024-10-23 21:32:29,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2024-10-23 21:32:29,270 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:32:29,270 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-23 21:32:29,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-23 21:32:29,270 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:32:29,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:32:29,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1941157624, now seen corresponding path program 1 times [2024-10-23 21:32:29,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:32:29,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953259476] [2024-10-23 21:32:29,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:32:29,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:32:29,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:32:29,504 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2024-10-23 21:32:29,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:32:29,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953259476] [2024-10-23 21:32:29,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953259476] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:32:29,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:32:29,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:32:29,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216404104] [2024-10-23 21:32:29,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:32:29,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:32:29,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:32:29,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:32:29,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:32:29,506 INFO L87 Difference]: Start difference. First operand 58070 states and 64276 transitions. Second operand has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 0 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 21:32:31,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:32:31,287 INFO L93 Difference]: Finished difference Result 116128 states and 128540 transitions. [2024-10-23 21:32:31,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:32:31,288 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 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 473 [2024-10-23 21:32:31,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:32:31,356 INFO L225 Difference]: With dead ends: 116128 [2024-10-23 21:32:31,357 INFO L226 Difference]: Without dead ends: 58059 [2024-10-23 21:32:31,397 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 21:32:31,398 INFO L432 NwaCegarLoop]: 672 mSDtfsCounter, 495 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1203 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 1342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 1203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-23 21:32:31,398 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [495 Valid, 740 Invalid, 1342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 1203 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-23 21:32:31,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58059 states. [2024-10-23 21:32:32,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58059 to 57207. [2024-10-23 21:32:32,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57207 states, 57206 states have (on average 1.084868720064329) internal successors, (62061), 57206 states have internal predecessors, (62061), 0 states have call successors, (0), 0 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 21:32:32,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57207 states to 57207 states and 62061 transitions. [2024-10-23 21:32:32,295 INFO L78 Accepts]: Start accepts. Automaton has 57207 states and 62061 transitions. Word has length 473 [2024-10-23 21:32:32,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:32:32,296 INFO L471 AbstractCegarLoop]: Abstraction has 57207 states and 62061 transitions. [2024-10-23 21:32:32,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 0 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 21:32:32,296 INFO L276 IsEmpty]: Start isEmpty. Operand 57207 states and 62061 transitions. [2024-10-23 21:32:32,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2024-10-23 21:32:32,307 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:32:32,308 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-23 21:32:32,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-23 21:32:32,308 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:32:32,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:32:32,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1759022531, now seen corresponding path program 1 times [2024-10-23 21:32:32,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:32:32,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587064427] [2024-10-23 21:32:32,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:32:32,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:32:32,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:32:32,901 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 244 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-10-23 21:32:32,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:32:32,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587064427] [2024-10-23 21:32:32,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587064427] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:32:32,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:32:32,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:32:32,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939659827] [2024-10-23 21:32:32,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:32:32,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:32:32,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:32:32,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:32:32,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:32:32,904 INFO L87 Difference]: Start difference. First operand 57207 states and 62061 transitions. Second operand has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 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 21:32:34,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:32:34,908 INFO L93 Difference]: Finished difference Result 118262 states and 128436 transitions. [2024-10-23 21:32:34,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:32:34,909 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 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 492 [2024-10-23 21:32:34,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:32:34,979 INFO L225 Difference]: With dead ends: 118262 [2024-10-23 21:32:34,980 INFO L226 Difference]: Without dead ends: 60201 [2024-10-23 21:32:34,988 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 21:32:34,990 INFO L432 NwaCegarLoop]: 728 mSDtfsCounter, 216 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 1271 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 1271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:32:34,991 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 792 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 1271 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-23 21:32:35,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60201 states. [2024-10-23 21:32:35,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60201 to 57208. [2024-10-23 21:32:35,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57208 states, 57207 states have (on average 1.0847273935007953) internal successors, (62054), 57207 states have internal predecessors, (62054), 0 states have call successors, (0), 0 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 21:32:35,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57208 states to 57208 states and 62054 transitions. [2024-10-23 21:32:35,812 INFO L78 Accepts]: Start accepts. Automaton has 57208 states and 62054 transitions. Word has length 492 [2024-10-23 21:32:35,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:32:35,815 INFO L471 AbstractCegarLoop]: Abstraction has 57208 states and 62054 transitions. [2024-10-23 21:32:35,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 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 21:32:35,816 INFO L276 IsEmpty]: Start isEmpty. Operand 57208 states and 62054 transitions. [2024-10-23 21:32:35,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2024-10-23 21:32:35,837 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:32:35,838 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-23 21:32:35,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-23 21:32:35,839 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:32:35,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:32:35,840 INFO L85 PathProgramCache]: Analyzing trace with hash 527003963, now seen corresponding path program 1 times [2024-10-23 21:32:35,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:32:35,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642269017] [2024-10-23 21:32:35,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:32:35,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:32:35,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:32:36,593 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 250 proven. 82 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-23 21:32:36,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:32:36,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642269017] [2024-10-23 21:32:36,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642269017] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:32:36,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968281965] [2024-10-23 21:32:36,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:32:36,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:32:36,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:32:36,607 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 21:32:36,609 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 21:32:36,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:32:36,765 INFO L255 TraceCheckSpWp]: Trace formula consists of 628 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-23 21:32:36,781 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:32:37,054 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 250 proven. 82 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-23 21:32:37,055 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 21:32:37,358 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 332 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-23 21:32:37,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968281965] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 21:32:37,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 21:32:37,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-10-23 21:32:37,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127059421] [2024-10-23 21:32:37,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:32:37,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:32:37,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:32:37,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:32:37,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:32:37,360 INFO L87 Difference]: Start difference. First operand 57208 states and 62054 transitions. Second operand has 4 states, 4 states have (on average 125.25) internal successors, (501), 3 states have internal predecessors, (501), 0 states have call successors, (0), 0 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 21:32:40,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:32:40,466 INFO L93 Difference]: Finished difference Result 138297 states and 150078 transitions. [2024-10-23 21:32:40,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:32:40,466 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 125.25) internal successors, (501), 3 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 505 [2024-10-23 21:32:40,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:32:40,547 INFO L225 Difference]: With dead ends: 138297 [2024-10-23 21:32:40,547 INFO L226 Difference]: Without dead ends: 79381 [2024-10-23 21:32:40,568 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1011 GetRequests, 1007 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 21:32:40,569 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 741 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 2473 mSolverCounterSat, 591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 3064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 591 IncrementalHoareTripleChecker+Valid, 2473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-10-23 21:32:40,569 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [741 Valid, 142 Invalid, 3064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [591 Valid, 2473 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-10-23 21:32:40,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79381 states. [2024-10-23 21:32:41,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79381 to 71667. [2024-10-23 21:32:41,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71667 states, 71666 states have (on average 1.0851728853291658) internal successors, (77770), 71666 states have internal predecessors, (77770), 0 states have call successors, (0), 0 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 21:32:41,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71667 states to 71667 states and 77770 transitions. [2024-10-23 21:32:41,371 INFO L78 Accepts]: Start accepts. Automaton has 71667 states and 77770 transitions. Word has length 505 [2024-10-23 21:32:41,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:32:41,372 INFO L471 AbstractCegarLoop]: Abstraction has 71667 states and 77770 transitions. [2024-10-23 21:32:41,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 125.25) internal successors, (501), 3 states have internal predecessors, (501), 0 states have call successors, (0), 0 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 21:32:41,372 INFO L276 IsEmpty]: Start isEmpty. Operand 71667 states and 77770 transitions. [2024-10-23 21:32:41,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2024-10-23 21:32:41,384 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:32:41,385 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:32:41,398 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-23 21:32:41,588 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,SelfDestructingSolverStorable15 [2024-10-23 21:32:41,589 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:32:41,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:32:41,590 INFO L85 PathProgramCache]: Analyzing trace with hash -543631024, now seen corresponding path program 1 times [2024-10-23 21:32:41,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:32:41,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847128571] [2024-10-23 21:32:41,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:32:41,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:32:41,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:32:42,312 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 277 proven. 82 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-23 21:32:42,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:32:42,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847128571] [2024-10-23 21:32:42,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847128571] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:32:42,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865881704] [2024-10-23 21:32:42,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:32:42,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:32:42,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:32:42,318 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 21:32:42,319 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 21:32:42,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:32:42,558 INFO L255 TraceCheckSpWp]: Trace formula consists of 654 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-23 21:32:42,574 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:32:43,101 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 200 proven. 164 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:32:43,105 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 21:32:43,773 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 364 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:32:43,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865881704] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 21:32:43,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 21:32:43,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3, 4] total 7 [2024-10-23 21:32:43,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161356623] [2024-10-23 21:32:43,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:32:43,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-23 21:32:43,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:32:43,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-23 21:32:43,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-10-23 21:32:43,776 INFO L87 Difference]: Start difference. First operand 71667 states and 77770 transitions. Second operand has 5 states, 5 states have (on average 106.0) internal successors, (530), 4 states have internal predecessors, (530), 0 states have call successors, (0), 0 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 21:32:46,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:32:46,831 INFO L93 Difference]: Finished difference Result 184222 states and 200278 transitions. [2024-10-23 21:32:46,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-23 21:32:46,832 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 106.0) internal successors, (530), 4 states have internal predecessors, (530), 0 states have call successors, (0), 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 530 [2024-10-23 21:32:46,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:32:46,966 INFO L225 Difference]: With dead ends: 184222 [2024-10-23 21:32:46,966 INFO L226 Difference]: Without dead ends: 109999 [2024-10-23 21:32:47,264 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1061 GetRequests, 1055 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-10-23 21:32:47,265 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 1240 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 2716 mSolverCounterSat, 874 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1240 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 3590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 874 IncrementalHoareTripleChecker+Valid, 2716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-10-23 21:32:47,265 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1240 Valid, 184 Invalid, 3590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [874 Valid, 2716 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-10-23 21:32:47,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109999 states. [2024-10-23 21:32:48,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109999 to 85280. [2024-10-23 21:32:48,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85280 states, 85279 states have (on average 1.077768266513444) internal successors, (91911), 85279 states have internal predecessors, (91911), 0 states have call successors, (0), 0 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 21:32:48,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85280 states to 85280 states and 91911 transitions. [2024-10-23 21:32:48,438 INFO L78 Accepts]: Start accepts. Automaton has 85280 states and 91911 transitions. Word has length 530 [2024-10-23 21:32:48,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:32:48,438 INFO L471 AbstractCegarLoop]: Abstraction has 85280 states and 91911 transitions. [2024-10-23 21:32:48,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 106.0) internal successors, (530), 4 states have internal predecessors, (530), 0 states have call successors, (0), 0 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 21:32:48,439 INFO L276 IsEmpty]: Start isEmpty. Operand 85280 states and 91911 transitions. [2024-10-23 21:32:48,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 593 [2024-10-23 21:32:48,464 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:32:48,468 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:32:48,496 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 21:32:48,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-23 21:32:48,670 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:32:48,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:32:48,670 INFO L85 PathProgramCache]: Analyzing trace with hash -593966466, now seen corresponding path program 1 times [2024-10-23 21:32:48,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:32:48,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823830482] [2024-10-23 21:32:48,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:32:48,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:32:48,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:32:48,937 INFO L134 CoverageAnalysis]: Checked inductivity of 641 backedges. 324 proven. 0 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2024-10-23 21:32:48,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:32:48,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823830482] [2024-10-23 21:32:48,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823830482] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:32:48,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:32:48,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:32:48,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336335375] [2024-10-23 21:32:48,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:32:48,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:32:48,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:32:48,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:32:48,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:32:48,940 INFO L87 Difference]: Start difference. First operand 85280 states and 91911 transitions. Second operand has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:32:50,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:32:50,878 INFO L93 Difference]: Finished difference Result 175669 states and 189302 transitions. [2024-10-23 21:32:50,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:32:50,879 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 592 [2024-10-23 21:32:50,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:32:50,968 INFO L225 Difference]: With dead ends: 175669 [2024-10-23 21:32:50,968 INFO L226 Difference]: Without dead ends: 88687 [2024-10-23 21:32:51,006 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 21:32:51,007 INFO L432 NwaCegarLoop]: 630 mSDtfsCounter, 504 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 1150 mSolverCounterSat, 234 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 1384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 1150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-23 21:32:51,008 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [504 Valid, 673 Invalid, 1384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 1150 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-23 21:32:51,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88687 states. [2024-10-23 21:32:51,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88687 to 84849. [2024-10-23 21:32:51,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84849 states, 84848 states have (on average 1.0682396756552894) internal successors, (90638), 84848 states have internal predecessors, (90638), 0 states have call successors, (0), 0 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 21:32:52,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84849 states to 84849 states and 90638 transitions. [2024-10-23 21:32:52,217 INFO L78 Accepts]: Start accepts. Automaton has 84849 states and 90638 transitions. Word has length 592 [2024-10-23 21:32:52,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:32:52,217 INFO L471 AbstractCegarLoop]: Abstraction has 84849 states and 90638 transitions. [2024-10-23 21:32:52,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:32:52,218 INFO L276 IsEmpty]: Start isEmpty. Operand 84849 states and 90638 transitions. [2024-10-23 21:32:52,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 636 [2024-10-23 21:32:52,246 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:32:52,247 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:32:52,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-23 21:32:52,247 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:32:52,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:32:52,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1255622564, now seen corresponding path program 1 times [2024-10-23 21:32:52,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:32:52,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645525580] [2024-10-23 21:32:52,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:32:52,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:32:52,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:32:52,718 INFO L134 CoverageAnalysis]: Checked inductivity of 695 backedges. 390 proven. 0 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2024-10-23 21:32:52,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:32:52,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645525580] [2024-10-23 21:32:52,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645525580] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:32:52,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:32:52,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-23 21:32:52,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902562848] [2024-10-23 21:32:52,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:32:52,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:32:52,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:32:52,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:32:52,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:32:52,722 INFO L87 Difference]: Start difference. First operand 84849 states and 90638 transitions. Second operand has 4 states, 4 states have (on average 103.5) internal successors, (414), 4 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:32:55,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:32:55,546 INFO L93 Difference]: Finished difference Result 183319 states and 195676 transitions. [2024-10-23 21:32:55,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:32:55,547 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 103.5) internal successors, (414), 4 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 635 [2024-10-23 21:32:55,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:32:55,667 INFO L225 Difference]: With dead ends: 183319 [2024-10-23 21:32:55,667 INFO L226 Difference]: Without dead ends: 98471 [2024-10-23 21:32:55,725 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 21:32:55,726 INFO L432 NwaCegarLoop]: 213 mSDtfsCounter, 696 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 2420 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 2718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 2420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-10-23 21:32:55,726 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [696 Valid, 315 Invalid, 2718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 2420 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-10-23 21:32:55,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98471 states. [2024-10-23 21:32:56,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98471 to 90794. [2024-10-23 21:32:56,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90794 states, 90793 states have (on average 1.0625488749132643) internal successors, (96472), 90793 states have internal predecessors, (96472), 0 states have call successors, (0), 0 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 21:32:57,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90794 states to 90794 states and 96472 transitions. [2024-10-23 21:32:57,046 INFO L78 Accepts]: Start accepts. Automaton has 90794 states and 96472 transitions. Word has length 635 [2024-10-23 21:32:57,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:32:57,047 INFO L471 AbstractCegarLoop]: Abstraction has 90794 states and 96472 transitions. [2024-10-23 21:32:57,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.5) internal successors, (414), 4 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:32:57,047 INFO L276 IsEmpty]: Start isEmpty. Operand 90794 states and 96472 transitions. [2024-10-23 21:32:57,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 642 [2024-10-23 21:32:57,061 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:32:57,061 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-23 21:32:57,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-23 21:32:57,061 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:32:57,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:32:57,062 INFO L85 PathProgramCache]: Analyzing trace with hash -116196281, now seen corresponding path program 1 times [2024-10-23 21:32:57,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:32:57,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268975428] [2024-10-23 21:32:57,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:32:57,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:32:57,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:32:57,349 INFO L134 CoverageAnalysis]: Checked inductivity of 707 backedges. 396 proven. 0 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2024-10-23 21:32:57,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:32:57,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268975428] [2024-10-23 21:32:57,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268975428] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:32:57,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:32:57,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-23 21:32:57,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287114388] [2024-10-23 21:32:57,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:32:57,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:32:57,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:32:57,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:32:57,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:32:57,352 INFO L87 Difference]: Start difference. First operand 90794 states and 96472 transitions. Second operand has 4 states, 4 states have (on average 103.5) internal successors, (414), 4 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:33:00,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:33:00,023 INFO L93 Difference]: Finished difference Result 187134 states and 198736 transitions. [2024-10-23 21:33:00,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:33:00,024 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 103.5) internal successors, (414), 4 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 641 [2024-10-23 21:33:00,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:33:00,121 INFO L225 Difference]: With dead ends: 187134 [2024-10-23 21:33:00,121 INFO L226 Difference]: Without dead ends: 96341 [2024-10-23 21:33:00,162 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 21:33:00,163 INFO L432 NwaCegarLoop]: 646 mSDtfsCounter, 692 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 2795 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 692 SdHoareTripleChecker+Valid, 764 SdHoareTripleChecker+Invalid, 2935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 2795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-10-23 21:33:00,163 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [692 Valid, 764 Invalid, 2935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 2795 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-10-23 21:33:00,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96341 states. [2024-10-23 21:33:01,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96341 to 91219. [2024-10-23 21:33:01,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91219 states, 91218 states have (on average 1.0624876669078471) internal successors, (96918), 91218 states have internal predecessors, (96918), 0 states have call successors, (0), 0 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 21:33:01,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91219 states to 91219 states and 96918 transitions. [2024-10-23 21:33:01,672 INFO L78 Accepts]: Start accepts. Automaton has 91219 states and 96918 transitions. Word has length 641 [2024-10-23 21:33:01,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:33:01,673 INFO L471 AbstractCegarLoop]: Abstraction has 91219 states and 96918 transitions. [2024-10-23 21:33:01,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.5) internal successors, (414), 4 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:33:01,673 INFO L276 IsEmpty]: Start isEmpty. Operand 91219 states and 96918 transitions. [2024-10-23 21:33:01,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 648 [2024-10-23 21:33:01,687 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:33:01,688 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-23 21:33:01,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-23 21:33:01,688 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:33:01,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:33:01,689 INFO L85 PathProgramCache]: Analyzing trace with hash 2059318088, now seen corresponding path program 1 times [2024-10-23 21:33:01,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:33:01,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690370242] [2024-10-23 21:33:01,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:33:01,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:33:01,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:33:02,221 INFO L134 CoverageAnalysis]: Checked inductivity of 647 backedges. 561 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2024-10-23 21:33:02,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:33:02,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690370242] [2024-10-23 21:33:02,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690370242] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:33:02,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:33:02,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:33:02,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140421621] [2024-10-23 21:33:02,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:33:02,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:33:02,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:33:02,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:33:02,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:33:02,227 INFO L87 Difference]: Start difference. First operand 91219 states and 96918 transitions. Second operand has 3 states, 3 states have (on average 187.66666666666666) internal successors, (563), 3 states have internal predecessors, (563), 0 states have call successors, (0), 0 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 21:33:03,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:33:03,971 INFO L93 Difference]: Finished difference Result 188378 states and 200006 transitions. [2024-10-23 21:33:03,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:33:03,972 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 187.66666666666666) internal successors, (563), 3 states have internal predecessors, (563), 0 states have call successors, (0), 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 647 [2024-10-23 21:33:03,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:33:04,076 INFO L225 Difference]: With dead ends: 188378 [2024-10-23 21:33:04,076 INFO L226 Difference]: Without dead ends: 95878 [2024-10-23 21:33:04,130 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 21:33:04,130 INFO L432 NwaCegarLoop]: 566 mSDtfsCounter, 312 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 1155 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 1387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 1155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-23 21:33:04,131 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 589 Invalid, 1387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 1155 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-23 21:33:04,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95878 states. [2024-10-23 21:33:05,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95878 to 92467. [2024-10-23 21:33:05,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92467 states, 92466 states have (on average 1.0591244349274327) internal successors, (97933), 92466 states have internal predecessors, (97933), 0 states have call successors, (0), 0 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 21:33:05,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92467 states to 92467 states and 97933 transitions. [2024-10-23 21:33:05,582 INFO L78 Accepts]: Start accepts. Automaton has 92467 states and 97933 transitions. Word has length 647 [2024-10-23 21:33:05,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:33:05,582 INFO L471 AbstractCegarLoop]: Abstraction has 92467 states and 97933 transitions. [2024-10-23 21:33:05,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 187.66666666666666) internal successors, (563), 3 states have internal predecessors, (563), 0 states have call successors, (0), 0 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 21:33:05,583 INFO L276 IsEmpty]: Start isEmpty. Operand 92467 states and 97933 transitions. [2024-10-23 21:33:05,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 668 [2024-10-23 21:33:05,606 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:33:05,607 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-23 21:33:05,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-23 21:33:05,607 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:33:05,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:33:05,608 INFO L85 PathProgramCache]: Analyzing trace with hash -326266107, now seen corresponding path program 1 times [2024-10-23 21:33:05,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:33:05,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294212270] [2024-10-23 21:33:05,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:33:05,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:33:05,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:33:07,140 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 664 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-23 21:33:07,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:33:07,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294212270] [2024-10-23 21:33:07,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294212270] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:33:07,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:33:07,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-23 21:33:07,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541569624] [2024-10-23 21:33:07,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:33:07,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-23 21:33:07,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:33:07,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-23 21:33:07,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:33:07,142 INFO L87 Difference]: Start difference. First operand 92467 states and 97933 transitions. Second operand has 6 states, 6 states have (on average 110.5) internal successors, (663), 5 states have internal predecessors, (663), 0 states have call successors, (0), 0 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 21:33:10,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:33:10,153 INFO L93 Difference]: Finished difference Result 176399 states and 186798 transitions. [2024-10-23 21:33:10,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-23 21:33:10,155 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 110.5) internal successors, (663), 5 states have internal predecessors, (663), 0 states have call successors, (0), 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 667 [2024-10-23 21:33:10,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:33:10,240 INFO L225 Difference]: With dead ends: 176399 [2024-10-23 21:33:10,241 INFO L226 Difference]: Without dead ends: 83931 [2024-10-23 21:33:10,259 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-23 21:33:10,259 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 1420 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 4347 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1420 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 4427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 4347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-10-23 21:33:10,259 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1420 Valid, 221 Invalid, 4427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 4347 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-10-23 21:33:10,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83931 states. [2024-10-23 21:33:11,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83931 to 81791. [2024-10-23 21:33:11,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81791 states, 81790 states have (on average 1.0585890695684068) internal successors, (86582), 81790 states have internal predecessors, (86582), 0 states have call successors, (0), 0 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 21:33:11,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81791 states to 81791 states and 86582 transitions. [2024-10-23 21:33:11,242 INFO L78 Accepts]: Start accepts. Automaton has 81791 states and 86582 transitions. Word has length 667 [2024-10-23 21:33:11,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:33:11,243 INFO L471 AbstractCegarLoop]: Abstraction has 81791 states and 86582 transitions. [2024-10-23 21:33:11,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 110.5) internal successors, (663), 5 states have internal predecessors, (663), 0 states have call successors, (0), 0 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 21:33:11,243 INFO L276 IsEmpty]: Start isEmpty. Operand 81791 states and 86582 transitions. [2024-10-23 21:33:11,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 735 [2024-10-23 21:33:11,261 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:33:11,261 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:33:11,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-23 21:33:11,262 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:33:11,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:33:11,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1366553936, now seen corresponding path program 1 times [2024-10-23 21:33:11,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:33:11,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635658841] [2024-10-23 21:33:11,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:33:11,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:33:11,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:33:11,490 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 324 proven. 0 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2024-10-23 21:33:11,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:33:11,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635658841] [2024-10-23 21:33:11,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635658841] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:33:11,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:33:11,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:33:11,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052107104] [2024-10-23 21:33:11,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:33:11,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:33:11,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:33:11,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:33:11,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:33:11,492 INFO L87 Difference]: Start difference. First operand 81791 states and 86582 transitions. Second operand has 3 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 0 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 21:33:13,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:33:13,199 INFO L93 Difference]: Finished difference Result 165284 states and 174956 transitions. [2024-10-23 21:33:13,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:33:13,200 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 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 734 [2024-10-23 21:33:13,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:33:13,297 INFO L225 Difference]: With dead ends: 165284 [2024-10-23 21:33:13,298 INFO L226 Difference]: Without dead ends: 83494 [2024-10-23 21:33:13,350 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 21:33:13,351 INFO L432 NwaCegarLoop]: 241 mSDtfsCounter, 442 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 1100 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 1174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-23 21:33:13,352 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 284 Invalid, 1174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1100 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-23 21:33:13,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83494 states. [2024-10-23 21:33:14,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83494 to 79237. [2024-10-23 21:33:14,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79237 states, 79236 states have (on average 1.058332071280731) internal successors, (83858), 79236 states have internal predecessors, (83858), 0 states have call successors, (0), 0 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 21:33:14,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79237 states to 79237 states and 83858 transitions. [2024-10-23 21:33:14,847 INFO L78 Accepts]: Start accepts. Automaton has 79237 states and 83858 transitions. Word has length 734 [2024-10-23 21:33:14,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:33:14,848 INFO L471 AbstractCegarLoop]: Abstraction has 79237 states and 83858 transitions. [2024-10-23 21:33:14,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 0 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 21:33:14,848 INFO L276 IsEmpty]: Start isEmpty. Operand 79237 states and 83858 transitions. [2024-10-23 21:33:14,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 741 [2024-10-23 21:33:14,869 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:33:14,869 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:33:14,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-23 21:33:14,870 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:33:14,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:33:14,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1460958665, now seen corresponding path program 1 times [2024-10-23 21:33:14,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:33:14,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290387218] [2024-10-23 21:33:14,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:33:14,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:33:14,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:33:15,194 INFO L134 CoverageAnalysis]: Checked inductivity of 936 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 912 trivial. 0 not checked. [2024-10-23 21:33:15,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:33:15,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290387218] [2024-10-23 21:33:15,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290387218] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:33:15,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:33:15,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:33:15,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010391104] [2024-10-23 21:33:15,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:33:15,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:33:15,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:33:15,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:33:15,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:33:15,196 INFO L87 Difference]: Start difference. First operand 79237 states and 83858 transitions. Second operand has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 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 21:33:17,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:33:17,089 INFO L93 Difference]: Finished difference Result 158897 states and 168154 transitions. [2024-10-23 21:33:17,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:33:17,090 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 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 740 [2024-10-23 21:33:17,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:33:17,172 INFO L225 Difference]: With dead ends: 158897 [2024-10-23 21:33:17,172 INFO L226 Difference]: Without dead ends: 79236 [2024-10-23 21:33:17,212 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 21:33:17,212 INFO L432 NwaCegarLoop]: 668 mSDtfsCounter, 442 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1076 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 1160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-23 21:33:17,213 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 710 Invalid, 1160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1076 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-23 21:33:17,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79236 states. [2024-10-23 21:33:18,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79236 to 76255. [2024-10-23 21:33:18,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76255 states, 76254 states have (on average 1.0565347391612243) internal successors, (80565), 76254 states have internal predecessors, (80565), 0 states have call successors, (0), 0 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 21:33:18,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76255 states to 76255 states and 80565 transitions. [2024-10-23 21:33:18,330 INFO L78 Accepts]: Start accepts. Automaton has 76255 states and 80565 transitions. Word has length 740 [2024-10-23 21:33:18,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:33:18,330 INFO L471 AbstractCegarLoop]: Abstraction has 76255 states and 80565 transitions. [2024-10-23 21:33:18,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 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 21:33:18,331 INFO L276 IsEmpty]: Start isEmpty. Operand 76255 states and 80565 transitions. [2024-10-23 21:33:18,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 741 [2024-10-23 21:33:18,347 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:33:18,348 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:33:18,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-23 21:33:18,348 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:33:18,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:33:18,348 INFO L85 PathProgramCache]: Analyzing trace with hash -624365849, now seen corresponding path program 1 times [2024-10-23 21:33:18,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:33:18,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685011142] [2024-10-23 21:33:18,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:33:18,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:33:18,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:33:19,668 INFO L134 CoverageAnalysis]: Checked inductivity of 1097 backedges. 910 proven. 105 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-10-23 21:33:19,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:33:19,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685011142] [2024-10-23 21:33:19,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685011142] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:33:19,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893400722] [2024-10-23 21:33:19,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:33:19,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:33:19,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:33:19,671 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 21:33:19,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-23 21:33:19,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:33:19,904 INFO L255 TraceCheckSpWp]: Trace formula consists of 907 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-23 21:33:19,913 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:33:20,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1097 backedges. 951 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2024-10-23 21:33:20,495 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:33:20,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893400722] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:33:20,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:33:20,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-10-23 21:33:20,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302640845] [2024-10-23 21:33:20,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:33:20,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-23 21:33:20,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:33:20,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-23 21:33:20,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-23 21:33:20,498 INFO L87 Difference]: Start difference. First operand 76255 states and 80565 transitions. Second operand has 5 states, 5 states have (on average 119.2) internal successors, (596), 5 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)