./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-3.i -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 81f9c885cba2dee1faa6ea50c6c887a8afbb04e68b15a3a5c9caa87415ef3349 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 21:05:16,175 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 21:05:16,257 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 21:05:16,261 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 21:05:16,262 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 21:05:16,283 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 21:05:16,283 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 21:05:16,284 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 21:05:16,284 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 21:05:16,285 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 21:05:16,285 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 21:05:16,285 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 21:05:16,286 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 21:05:16,286 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 21:05:16,287 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 21:05:16,287 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 21:05:16,287 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 21:05:16,288 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 21:05:16,288 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 21:05:16,288 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 21:05:16,289 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 21:05:16,289 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 21:05:16,290 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 21:05:16,290 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 21:05:16,290 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 21:05:16,290 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 21:05:16,291 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 21:05:16,291 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 21:05:16,291 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 21:05:16,292 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 21:05:16,292 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 21:05:16,296 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 21:05:16,297 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 21:05:16,297 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 21:05:16,297 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 21:05:16,298 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 21:05:16,298 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 21:05:16,298 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 21:05:16,298 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 21:05:16,299 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 21:05:16,299 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 21:05:16,300 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 21:05:16,300 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81f9c885cba2dee1faa6ea50c6c887a8afbb04e68b15a3a5c9caa87415ef3349 [2024-11-18 21:05:16,585 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 21:05:16,613 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 21:05:16,616 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 21:05:16,617 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 21:05:16,617 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 21:05:16,619 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-3.i [2024-11-18 21:05:18,138 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 21:05:18,377 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 21:05:18,379 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-3.i [2024-11-18 21:05:18,392 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ed0a76dc/cfa2b556e1de478aa23f64c527f8268e/FLAG08818980e [2024-11-18 21:05:18,718 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ed0a76dc/cfa2b556e1de478aa23f64c527f8268e [2024-11-18 21:05:18,721 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 21:05:18,722 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 21:05:18,724 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 21:05:18,724 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 21:05:18,730 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 21:05:18,731 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:05:18" (1/1) ... [2024-11-18 21:05:18,732 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69521c98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:05:18, skipping insertion in model container [2024-11-18 21:05:18,732 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:05:18" (1/1) ... [2024-11-18 21:05:18,776 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 21:05:18,972 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-3.i[918,931] [2024-11-18 21:05:19,058 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 21:05:19,072 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 21:05:19,082 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-3.i[918,931] [2024-11-18 21:05:19,123 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 21:05:19,150 INFO L204 MainTranslator]: Completed translation [2024-11-18 21:05:19,154 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:05:19 WrapperNode [2024-11-18 21:05:19,154 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 21:05:19,156 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 21:05:19,156 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 21:05:19,156 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 21:05:19,165 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:05:19" (1/1) ... [2024-11-18 21:05:19,185 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:05:19" (1/1) ... [2024-11-18 21:05:19,258 INFO L138 Inliner]: procedures = 26, calls = 47, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 274 [2024-11-18 21:05:19,259 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 21:05:19,260 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 21:05:19,260 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 21:05:19,260 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 21:05:19,271 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:05:19" (1/1) ... [2024-11-18 21:05:19,272 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:05:19" (1/1) ... [2024-11-18 21:05:19,281 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:05:19" (1/1) ... [2024-11-18 21:05:19,320 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-18 21:05:19,322 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:05:19" (1/1) ... [2024-11-18 21:05:19,323 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:05:19" (1/1) ... [2024-11-18 21:05:19,333 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:05:19" (1/1) ... [2024-11-18 21:05:19,340 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:05:19" (1/1) ... [2024-11-18 21:05:19,345 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:05:19" (1/1) ... [2024-11-18 21:05:19,349 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:05:19" (1/1) ... [2024-11-18 21:05:19,355 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 21:05:19,356 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 21:05:19,356 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 21:05:19,357 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 21:05:19,358 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:05:19" (1/1) ... [2024-11-18 21:05:19,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 21:05:19,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 21:05:19,394 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 21:05:19,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 21:05:19,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 21:05:19,446 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 21:05:19,446 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 21:05:19,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 21:05:19,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 21:05:19,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 21:05:19,528 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 21:05:19,531 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 21:05:20,129 INFO L? ?]: Removed 18 outVars from TransFormulas that were not future-live. [2024-11-18 21:05:20,129 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 21:05:20,152 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 21:05:20,153 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 21:05:20,153 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:05:20 BoogieIcfgContainer [2024-11-18 21:05:20,155 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 21:05:20,158 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 21:05:20,159 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 21:05:20,162 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 21:05:20,163 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:05:18" (1/3) ... [2024-11-18 21:05:20,164 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44949aee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:05:20, skipping insertion in model container [2024-11-18 21:05:20,165 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:05:19" (2/3) ... [2024-11-18 21:05:20,165 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44949aee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:05:20, skipping insertion in model container [2024-11-18 21:05:20,165 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:05:20" (3/3) ... [2024-11-18 21:05:20,167 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-co_file-3.i [2024-11-18 21:05:20,186 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 21:05:20,186 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 21:05:20,269 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 21:05:20,276 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;@23cffd60, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 21:05:20,276 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 21:05:20,281 INFO L276 IsEmpty]: Start isEmpty. Operand has 123 states, 86 states have (on average 1.5116279069767442) internal successors, (130), 87 states have internal predecessors, (130), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-18 21:05:20,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-11-18 21:05:20,300 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:05:20,301 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 21:05:20,302 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:05:20,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:05:20,310 INFO L85 PathProgramCache]: Analyzing trace with hash -73510540, now seen corresponding path program 1 times [2024-11-18 21:05:20,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:05:20,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471497001] [2024-11-18 21:05:20,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:05:20,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:05:20,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:05:20,740 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 2178 trivial. 0 not checked. [2024-11-18 21:05:20,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:05:20,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471497001] [2024-11-18 21:05:20,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471497001] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 21:05:20,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083359839] [2024-11-18 21:05:20,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:05:20,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 21:05:20,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 21:05:20,746 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 21:05:20,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 21:05:20,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:05:20,975 INFO L255 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 21:05:20,991 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 21:05:21,040 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 2178 trivial. 0 not checked. [2024-11-18 21:05:21,040 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 21:05:21,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2083359839] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:05:21,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 21:05:21,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 21:05:21,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927950393] [2024-11-18 21:05:21,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:05:21,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 21:05:21,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:05:21,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 21:05:21,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 21:05:21,084 INFO L87 Difference]: Start difference. First operand has 123 states, 86 states have (on average 1.5116279069767442) internal successors, (130), 87 states have internal predecessors, (130), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) [2024-11-18 21:05:21,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:05:21,124 INFO L93 Difference]: Finished difference Result 239 states and 424 transitions. [2024-11-18 21:05:21,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 21:05:21,127 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) Word has length 221 [2024-11-18 21:05:21,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:05:21,135 INFO L225 Difference]: With dead ends: 239 [2024-11-18 21:05:21,135 INFO L226 Difference]: Without dead ends: 119 [2024-11-18 21:05:21,138 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 21:05:21,141 INFO L432 NwaCegarLoop]: 188 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 21:05:21,143 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 21:05:21,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-11-18 21:05:21,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2024-11-18 21:05:21,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 83 states have (on average 1.4457831325301205) internal successors, (120), 83 states have internal predecessors, (120), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-18 21:05:21,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 188 transitions. [2024-11-18 21:05:21,194 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 188 transitions. Word has length 221 [2024-11-18 21:05:21,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:05:21,195 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 188 transitions. [2024-11-18 21:05:21,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) [2024-11-18 21:05:21,195 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 188 transitions. [2024-11-18 21:05:21,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2024-11-18 21:05:21,200 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:05:21,200 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 21:05:21,220 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-18 21:05:21,401 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,SelfDestructingSolverStorable0 [2024-11-18 21:05:21,402 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:05:21,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:05:21,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1698533249, now seen corresponding path program 1 times [2024-11-18 21:05:21,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:05:21,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915507792] [2024-11-18 21:05:21,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:05:21,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:05:21,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:05:21,820 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-18 21:05:21,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:05:21,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915507792] [2024-11-18 21:05:21,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915507792] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:05:21,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:05:21,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 21:05:21,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975434707] [2024-11-18 21:05:21,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:05:21,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 21:05:21,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:05:21,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 21:05:21,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 21:05:21,847 INFO L87 Difference]: Start difference. First operand 119 states and 188 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 21:05:21,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:05:21,949 INFO L93 Difference]: Finished difference Result 348 states and 553 transitions. [2024-11-18 21:05:21,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 21:05:21,950 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 223 [2024-11-18 21:05:21,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:05:21,955 INFO L225 Difference]: With dead ends: 348 [2024-11-18 21:05:21,958 INFO L226 Difference]: Without dead ends: 232 [2024-11-18 21:05:21,959 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 21:05:21,963 INFO L432 NwaCegarLoop]: 176 mSDtfsCounter, 182 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 21:05:21,964 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 346 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 21:05:21,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2024-11-18 21:05:22,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 229. [2024-11-18 21:05:22,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 158 states have (on average 1.4493670886075949) internal successors, (229), 158 states have internal predecessors, (229), 68 states have call successors, (68), 2 states have call predecessors, (68), 2 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2024-11-18 21:05:22,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 365 transitions. [2024-11-18 21:05:22,010 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 365 transitions. Word has length 223 [2024-11-18 21:05:22,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:05:22,013 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 365 transitions. [2024-11-18 21:05:22,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 21:05:22,013 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 365 transitions. [2024-11-18 21:05:22,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2024-11-18 21:05:22,021 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:05:22,021 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 21:05:22,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 21:05:22,022 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:05:22,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:05:22,023 INFO L85 PathProgramCache]: Analyzing trace with hash -2039355589, now seen corresponding path program 1 times [2024-11-18 21:05:22,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:05:22,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076928534] [2024-11-18 21:05:22,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:05:22,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:05:22,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:05:22,296 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-18 21:05:22,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:05:22,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076928534] [2024-11-18 21:05:22,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076928534] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:05:22,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:05:22,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 21:05:22,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56691356] [2024-11-18 21:05:22,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:05:22,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 21:05:22,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:05:22,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 21:05:22,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 21:05:22,304 INFO L87 Difference]: Start difference. First operand 229 states and 365 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 21:05:22,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:05:22,453 INFO L93 Difference]: Finished difference Result 669 states and 1072 transitions. [2024-11-18 21:05:22,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 21:05:22,454 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 224 [2024-11-18 21:05:22,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:05:22,463 INFO L225 Difference]: With dead ends: 669 [2024-11-18 21:05:22,464 INFO L226 Difference]: Without dead ends: 443 [2024-11-18 21:05:22,466 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 21:05:22,467 INFO L432 NwaCegarLoop]: 290 mSDtfsCounter, 160 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 21:05:22,468 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 443 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 21:05:22,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2024-11-18 21:05:22,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 441. [2024-11-18 21:05:22,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 300 states have (on average 1.4266666666666667) internal successors, (428), 300 states have internal predecessors, (428), 136 states have call successors, (136), 4 states have call predecessors, (136), 4 states have return successors, (136), 136 states have call predecessors, (136), 136 states have call successors, (136) [2024-11-18 21:05:22,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 700 transitions. [2024-11-18 21:05:22,550 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 700 transitions. Word has length 224 [2024-11-18 21:05:22,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:05:22,553 INFO L471 AbstractCegarLoop]: Abstraction has 441 states and 700 transitions. [2024-11-18 21:05:22,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 21:05:22,554 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 700 transitions. [2024-11-18 21:05:22,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2024-11-18 21:05:22,559 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:05:22,560 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 21:05:22,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 21:05:22,560 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:05:22,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:05:22,562 INFO L85 PathProgramCache]: Analyzing trace with hash 422208375, now seen corresponding path program 1 times [2024-11-18 21:05:22,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:05:22,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089740264] [2024-11-18 21:05:22,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:05:22,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:05:22,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:05:22,926 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-18 21:05:22,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:05:22,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089740264] [2024-11-18 21:05:22,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089740264] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:05:22,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:05:22,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 21:05:22,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6232892] [2024-11-18 21:05:22,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:05:22,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 21:05:22,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:05:22,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 21:05:22,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 21:05:22,934 INFO L87 Difference]: Start difference. First operand 441 states and 700 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 21:05:23,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:05:23,070 INFO L93 Difference]: Finished difference Result 1317 states and 2094 transitions. [2024-11-18 21:05:23,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 21:05:23,072 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 225 [2024-11-18 21:05:23,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:05:23,081 INFO L225 Difference]: With dead ends: 1317 [2024-11-18 21:05:23,082 INFO L226 Difference]: Without dead ends: 879 [2024-11-18 21:05:23,084 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 21:05:23,086 INFO L432 NwaCegarLoop]: 197 mSDtfsCounter, 109 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 21:05:23,087 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 357 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 21:05:23,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2024-11-18 21:05:23,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 877. [2024-11-18 21:05:23,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 596 states have (on average 1.4093959731543624) internal successors, (840), 596 states have internal predecessors, (840), 272 states have call successors, (272), 8 states have call predecessors, (272), 8 states have return successors, (272), 272 states have call predecessors, (272), 272 states have call successors, (272) [2024-11-18 21:05:23,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1384 transitions. [2024-11-18 21:05:23,216 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1384 transitions. Word has length 225 [2024-11-18 21:05:23,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:05:23,216 INFO L471 AbstractCegarLoop]: Abstraction has 877 states and 1384 transitions. [2024-11-18 21:05:23,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 21:05:23,217 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1384 transitions. [2024-11-18 21:05:23,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2024-11-18 21:05:23,220 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:05:23,221 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 21:05:23,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 21:05:23,223 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:05:23,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:05:23,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1947342593, now seen corresponding path program 1 times [2024-11-18 21:05:23,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:05:23,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332372687] [2024-11-18 21:05:23,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:05:23,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:05:23,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:05:23,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-18 21:05:23,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:05:23,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332372687] [2024-11-18 21:05:23,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332372687] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:05:23,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:05:23,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 21:05:23,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368006806] [2024-11-18 21:05:23,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:05:23,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 21:05:23,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:05:23,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 21:05:23,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 21:05:23,403 INFO L87 Difference]: Start difference. First operand 877 states and 1384 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 21:05:23,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:05:23,490 INFO L93 Difference]: Finished difference Result 2145 states and 3370 transitions. [2024-11-18 21:05:23,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 21:05:23,491 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 226 [2024-11-18 21:05:23,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:05:23,502 INFO L225 Difference]: With dead ends: 2145 [2024-11-18 21:05:23,502 INFO L226 Difference]: Without dead ends: 1271 [2024-11-18 21:05:23,506 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 21:05:23,508 INFO L432 NwaCegarLoop]: 257 mSDtfsCounter, 78 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 21:05:23,509 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 426 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 21:05:23,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1271 states. [2024-11-18 21:05:23,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1271 to 1065. [2024-11-18 21:05:23,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1065 states, 784 states have (on average 1.4591836734693877) internal successors, (1144), 784 states have internal predecessors, (1144), 272 states have call successors, (272), 8 states have call predecessors, (272), 8 states have return successors, (272), 272 states have call predecessors, (272), 272 states have call successors, (272) [2024-11-18 21:05:23,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1688 transitions. [2024-11-18 21:05:23,622 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1688 transitions. Word has length 226 [2024-11-18 21:05:23,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:05:23,623 INFO L471 AbstractCegarLoop]: Abstraction has 1065 states and 1688 transitions. [2024-11-18 21:05:23,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 21:05:23,624 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1688 transitions. [2024-11-18 21:05:23,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2024-11-18 21:05:23,627 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:05:23,627 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 21:05:23,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 21:05:23,629 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:05:23,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:05:23,630 INFO L85 PathProgramCache]: Analyzing trace with hash 554223511, now seen corresponding path program 1 times [2024-11-18 21:05:23,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:05:23,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634050642] [2024-11-18 21:05:23,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:05:23,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:05:23,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:05:24,149 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-18 21:05:24,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:05:24,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634050642] [2024-11-18 21:05:24,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634050642] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:05:24,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:05:24,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 21:05:24,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181055238] [2024-11-18 21:05:24,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:05:24,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 21:05:24,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:05:24,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 21:05:24,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 21:05:24,155 INFO L87 Difference]: Start difference. First operand 1065 states and 1688 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 21:05:24,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:05:24,352 INFO L93 Difference]: Finished difference Result 2399 states and 3797 transitions. [2024-11-18 21:05:24,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 21:05:24,353 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 226 [2024-11-18 21:05:24,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:05:24,367 INFO L225 Difference]: With dead ends: 2399 [2024-11-18 21:05:24,368 INFO L226 Difference]: Without dead ends: 1337 [2024-11-18 21:05:24,372 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 21:05:24,373 INFO L432 NwaCegarLoop]: 164 mSDtfsCounter, 117 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 21:05:24,375 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 312 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 21:05:24,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1337 states. [2024-11-18 21:05:24,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1337 to 1333. [2024-11-18 21:05:24,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1333 states, 982 states have (on average 1.4511201629327901) internal successors, (1425), 982 states have internal predecessors, (1425), 340 states have call successors, (340), 10 states have call predecessors, (340), 10 states have return successors, (340), 340 states have call predecessors, (340), 340 states have call successors, (340) [2024-11-18 21:05:24,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1333 states to 1333 states and 2105 transitions. [2024-11-18 21:05:24,500 INFO L78 Accepts]: Start accepts. Automaton has 1333 states and 2105 transitions. Word has length 226 [2024-11-18 21:05:24,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:05:24,501 INFO L471 AbstractCegarLoop]: Abstraction has 1333 states and 2105 transitions. [2024-11-18 21:05:24,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 21:05:24,502 INFO L276 IsEmpty]: Start isEmpty. Operand 1333 states and 2105 transitions. [2024-11-18 21:05:24,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2024-11-18 21:05:24,505 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:05:24,505 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 21:05:24,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 21:05:24,506 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:05:24,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:05:24,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1369004523, now seen corresponding path program 1 times [2024-11-18 21:05:24,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:05:24,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244253742] [2024-11-18 21:05:24,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:05:24,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:05:24,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:05:24,851 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-18 21:05:24,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:05:24,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244253742] [2024-11-18 21:05:24,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244253742] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:05:24,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:05:24,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 21:05:24,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342789033] [2024-11-18 21:05:24,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:05:24,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 21:05:24,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:05:24,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 21:05:24,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 21:05:24,855 INFO L87 Difference]: Start difference. First operand 1333 states and 2105 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 21:05:25,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:05:25,217 INFO L93 Difference]: Finished difference Result 2665 states and 4208 transitions. [2024-11-18 21:05:25,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 21:05:25,218 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 226 [2024-11-18 21:05:25,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:05:25,228 INFO L225 Difference]: With dead ends: 2665 [2024-11-18 21:05:25,229 INFO L226 Difference]: Without dead ends: 1335 [2024-11-18 21:05:25,234 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 21:05:25,236 INFO L432 NwaCegarLoop]: 305 mSDtfsCounter, 152 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 21:05:25,236 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 537 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 21:05:25,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1335 states. [2024-11-18 21:05:25,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1335 to 1333. [2024-11-18 21:05:25,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1333 states, 982 states have (on average 1.4460285132382893) internal successors, (1420), 982 states have internal predecessors, (1420), 340 states have call successors, (340), 10 states have call predecessors, (340), 10 states have return successors, (340), 340 states have call predecessors, (340), 340 states have call successors, (340) [2024-11-18 21:05:25,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1333 states to 1333 states and 2100 transitions. [2024-11-18 21:05:25,378 INFO L78 Accepts]: Start accepts. Automaton has 1333 states and 2100 transitions. Word has length 226 [2024-11-18 21:05:25,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:05:25,379 INFO L471 AbstractCegarLoop]: Abstraction has 1333 states and 2100 transitions. [2024-11-18 21:05:25,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 21:05:25,379 INFO L276 IsEmpty]: Start isEmpty. Operand 1333 states and 2100 transitions. [2024-11-18 21:05:25,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2024-11-18 21:05:25,384 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:05:25,384 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 21:05:25,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 21:05:25,385 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:05:25,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:05:25,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1495400684, now seen corresponding path program 1 times [2024-11-18 21:05:25,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:05:25,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020224650] [2024-11-18 21:05:25,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:05:25,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:05:25,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:05:25,850 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-18 21:05:25,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:05:25,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020224650] [2024-11-18 21:05:25,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020224650] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:05:25,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:05:25,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 21:05:25,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262831659] [2024-11-18 21:05:25,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:05:25,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 21:05:25,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:05:25,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 21:05:25,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 21:05:25,853 INFO L87 Difference]: Start difference. First operand 1333 states and 2100 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2024-11-18 21:05:26,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:05:26,744 INFO L93 Difference]: Finished difference Result 3223 states and 5078 transitions. [2024-11-18 21:05:26,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 21:05:26,745 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 227 [2024-11-18 21:05:26,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:05:26,758 INFO L225 Difference]: With dead ends: 3223 [2024-11-18 21:05:26,759 INFO L226 Difference]: Without dead ends: 1893 [2024-11-18 21:05:26,764 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-18 21:05:26,765 INFO L432 NwaCegarLoop]: 163 mSDtfsCounter, 473 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 21:05:26,765 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [473 Valid, 742 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [278 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 21:05:26,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1893 states. [2024-11-18 21:05:26,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1893 to 1881. [2024-11-18 21:05:26,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1881 states, 1390 states have (on average 1.4489208633093524) internal successors, (2014), 1390 states have internal predecessors, (2014), 476 states have call successors, (476), 14 states have call predecessors, (476), 14 states have return successors, (476), 476 states have call predecessors, (476), 476 states have call successors, (476) [2024-11-18 21:05:26,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1881 states to 1881 states and 2966 transitions. [2024-11-18 21:05:26,945 INFO L78 Accepts]: Start accepts. Automaton has 1881 states and 2966 transitions. Word has length 227 [2024-11-18 21:05:26,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:05:26,946 INFO L471 AbstractCegarLoop]: Abstraction has 1881 states and 2966 transitions. [2024-11-18 21:05:26,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2024-11-18 21:05:26,947 INFO L276 IsEmpty]: Start isEmpty. Operand 1881 states and 2966 transitions. [2024-11-18 21:05:26,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2024-11-18 21:05:26,950 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:05:26,951 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 21:05:26,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 21:05:26,951 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:05:26,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:05:26,952 INFO L85 PathProgramCache]: Analyzing trace with hash 373897279, now seen corresponding path program 1 times [2024-11-18 21:05:26,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:05:26,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336563798] [2024-11-18 21:05:26,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:05:26,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:05:26,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:05:27,396 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-18 21:05:27,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:05:27,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336563798] [2024-11-18 21:05:27,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336563798] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:05:27,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:05:27,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 21:05:27,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332084209] [2024-11-18 21:05:27,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:05:27,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 21:05:27,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:05:27,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 21:05:27,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-18 21:05:27,399 INFO L87 Difference]: Start difference. First operand 1881 states and 2966 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 21:05:28,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:05:28,748 INFO L93 Difference]: Finished difference Result 6962 states and 10888 transitions. [2024-11-18 21:05:28,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 21:05:28,749 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 227 [2024-11-18 21:05:28,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:05:28,781 INFO L225 Difference]: With dead ends: 6962 [2024-11-18 21:05:28,782 INFO L226 Difference]: Without dead ends: 5084 [2024-11-18 21:05:28,789 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-18 21:05:28,789 INFO L432 NwaCegarLoop]: 213 mSDtfsCounter, 571 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 21:05:28,790 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [571 Valid, 625 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 21:05:28,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5084 states. [2024-11-18 21:05:29,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5084 to 4230. [2024-11-18 21:05:29,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4230 states, 3032 states have (on average 1.4010554089709764) internal successors, (4248), 3053 states have internal predecessors, (4248), 1155 states have call successors, (1155), 42 states have call predecessors, (1155), 42 states have return successors, (1155), 1134 states have call predecessors, (1155), 1155 states have call successors, (1155) [2024-11-18 21:05:29,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4230 states to 4230 states and 6558 transitions. [2024-11-18 21:05:29,296 INFO L78 Accepts]: Start accepts. Automaton has 4230 states and 6558 transitions. Word has length 227 [2024-11-18 21:05:29,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:05:29,298 INFO L471 AbstractCegarLoop]: Abstraction has 4230 states and 6558 transitions. [2024-11-18 21:05:29,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 21:05:29,299 INFO L276 IsEmpty]: Start isEmpty. Operand 4230 states and 6558 transitions. [2024-11-18 21:05:29,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2024-11-18 21:05:29,302 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:05:29,302 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 21:05:29,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 21:05:29,302 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:05:29,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:05:29,303 INFO L85 PathProgramCache]: Analyzing trace with hash -435449347, now seen corresponding path program 1 times [2024-11-18 21:05:29,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:05:29,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386464360] [2024-11-18 21:05:29,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:05:29,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:05:29,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:05:29,610 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 63 proven. 36 refuted. 0 times theorem prover too weak. 2145 trivial. 0 not checked. [2024-11-18 21:05:29,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:05:29,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386464360] [2024-11-18 21:05:29,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386464360] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 21:05:29,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288481801] [2024-11-18 21:05:29,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:05:29,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 21:05:29,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 21:05:29,614 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 21:05:29,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 21:05:29,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:05:29,785 INFO L255 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-18 21:05:29,793 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 21:05:30,044 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 1083 proven. 36 refuted. 0 times theorem prover too weak. 1125 trivial. 0 not checked. [2024-11-18 21:05:30,044 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 21:05:30,347 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 63 proven. 36 refuted. 0 times theorem prover too weak. 2145 trivial. 0 not checked. [2024-11-18 21:05:30,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288481801] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 21:05:30,348 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 21:05:30,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 9 [2024-11-18 21:05:30,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96182008] [2024-11-18 21:05:30,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 21:05:30,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 21:05:30,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:05:30,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 21:05:30,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 21:05:30,351 INFO L87 Difference]: Start difference. First operand 4230 states and 6558 transitions. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 3 states have call successors, (58), 2 states have call predecessors, (58), 4 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) [2024-11-18 21:05:31,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:05:31,240 INFO L93 Difference]: Finished difference Result 7249 states and 11223 transitions. [2024-11-18 21:05:31,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-18 21:05:31,241 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 3 states have call successors, (58), 2 states have call predecessors, (58), 4 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) Word has length 227 [2024-11-18 21:05:31,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:05:31,266 INFO L225 Difference]: With dead ends: 7249 [2024-11-18 21:05:31,266 INFO L226 Difference]: Without dead ends: 2928 [2024-11-18 21:05:31,283 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 452 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=201, Unknown=0, NotChecked=0, Total=306 [2024-11-18 21:05:31,284 INFO L432 NwaCegarLoop]: 228 mSDtfsCounter, 399 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 21:05:31,284 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 676 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 21:05:31,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2928 states. [2024-11-18 21:05:31,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2928 to 2870. [2024-11-18 21:05:31,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2870 states, 2106 states have (on average 1.416429249762583) internal successors, (2983), 2106 states have internal predecessors, (2983), 714 states have call successors, (714), 49 states have call predecessors, (714), 49 states have return successors, (714), 714 states have call predecessors, (714), 714 states have call successors, (714) [2024-11-18 21:05:31,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2870 states to 2870 states and 4411 transitions. [2024-11-18 21:05:31,564 INFO L78 Accepts]: Start accepts. Automaton has 2870 states and 4411 transitions. Word has length 227 [2024-11-18 21:05:31,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:05:31,565 INFO L471 AbstractCegarLoop]: Abstraction has 2870 states and 4411 transitions. [2024-11-18 21:05:31,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 3 states have call successors, (58), 2 states have call predecessors, (58), 4 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) [2024-11-18 21:05:31,566 INFO L276 IsEmpty]: Start isEmpty. Operand 2870 states and 4411 transitions. [2024-11-18 21:05:31,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-11-18 21:05:31,569 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:05:31,569 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 21:05:31,589 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-18 21:05:31,769 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,SelfDestructingSolverStorable9 [2024-11-18 21:05:31,771 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:05:31,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:05:31,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1394231081, now seen corresponding path program 1 times [2024-11-18 21:05:31,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:05:31,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675527854] [2024-11-18 21:05:31,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:05:31,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:05:31,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:05:32,035 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-18 21:05:32,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:05:32,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675527854] [2024-11-18 21:05:32,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675527854] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:05:32,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:05:32,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 21:05:32,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101959083] [2024-11-18 21:05:32,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:05:32,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 21:05:32,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:05:32,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 21:05:32,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 21:05:32,039 INFO L87 Difference]: Start difference. First operand 2870 states and 4411 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 21:05:32,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:05:32,538 INFO L93 Difference]: Finished difference Result 4780 states and 7353 transitions. [2024-11-18 21:05:32,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 21:05:32,539 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 228 [2024-11-18 21:05:32,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:05:32,565 INFO L225 Difference]: With dead ends: 4780 [2024-11-18 21:05:32,566 INFO L226 Difference]: Without dead ends: 2878 [2024-11-18 21:05:32,574 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-18 21:05:32,575 INFO L432 NwaCegarLoop]: 176 mSDtfsCounter, 126 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 21:05:32,575 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 714 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 21:05:32,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2878 states. [2024-11-18 21:05:32,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2878 to 2870. [2024-11-18 21:05:32,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2870 states, 2106 states have (on average 1.415954415954416) internal successors, (2982), 2106 states have internal predecessors, (2982), 714 states have call successors, (714), 49 states have call predecessors, (714), 49 states have return successors, (714), 714 states have call predecessors, (714), 714 states have call successors, (714) [2024-11-18 21:05:32,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2870 states to 2870 states and 4410 transitions. [2024-11-18 21:05:32,828 INFO L78 Accepts]: Start accepts. Automaton has 2870 states and 4410 transitions. Word has length 228 [2024-11-18 21:05:32,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:05:32,829 INFO L471 AbstractCegarLoop]: Abstraction has 2870 states and 4410 transitions. [2024-11-18 21:05:32,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 21:05:32,830 INFO L276 IsEmpty]: Start isEmpty. Operand 2870 states and 4410 transitions. [2024-11-18 21:05:32,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-11-18 21:05:32,833 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:05:32,833 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 21:05:32,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 21:05:32,834 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:05:32,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:05:32,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1832211059, now seen corresponding path program 1 times [2024-11-18 21:05:32,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:05:32,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436172556] [2024-11-18 21:05:32,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:05:32,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:05:32,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:05:33,236 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-18 21:05:33,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:05:33,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436172556] [2024-11-18 21:05:33,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436172556] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:05:33,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:05:33,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 21:05:33,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244978114] [2024-11-18 21:05:33,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:05:33,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 21:05:33,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:05:33,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 21:05:33,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 21:05:33,240 INFO L87 Difference]: Start difference. First operand 2870 states and 4410 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 21:05:33,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:05:33,847 INFO L93 Difference]: Finished difference Result 7441 states and 11441 transitions. [2024-11-18 21:05:33,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 21:05:33,848 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 228 [2024-11-18 21:05:33,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:05:33,885 INFO L225 Difference]: With dead ends: 7441 [2024-11-18 21:05:33,886 INFO L226 Difference]: Without dead ends: 4448 [2024-11-18 21:05:33,899 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-18 21:05:33,900 INFO L432 NwaCegarLoop]: 201 mSDtfsCounter, 305 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 21:05:33,900 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 681 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 21:05:33,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4448 states. [2024-11-18 21:05:34,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4448 to 4024. [2024-11-18 21:05:34,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4024 states, 3044 states have (on average 1.4224704336399474) internal successors, (4330), 3044 states have internal predecessors, (4330), 918 states have call successors, (918), 61 states have call predecessors, (918), 61 states have return successors, (918), 918 states have call predecessors, (918), 918 states have call successors, (918) [2024-11-18 21:05:34,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4024 states to 4024 states and 6166 transitions. [2024-11-18 21:05:34,356 INFO L78 Accepts]: Start accepts. Automaton has 4024 states and 6166 transitions. Word has length 228 [2024-11-18 21:05:34,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:05:34,357 INFO L471 AbstractCegarLoop]: Abstraction has 4024 states and 6166 transitions. [2024-11-18 21:05:34,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 21:05:34,358 INFO L276 IsEmpty]: Start isEmpty. Operand 4024 states and 6166 transitions. [2024-11-18 21:05:34,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-11-18 21:05:34,361 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:05:34,362 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 21:05:34,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 21:05:34,362 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:05:34,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:05:34,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1686421068, now seen corresponding path program 1 times [2024-11-18 21:05:34,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:05:34,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019225582] [2024-11-18 21:05:34,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:05:34,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:05:34,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:05:34,814 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-18 21:05:34,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:05:34,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019225582] [2024-11-18 21:05:34,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019225582] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:05:34,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:05:34,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 21:05:34,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155107985] [2024-11-18 21:05:34,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:05:34,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 21:05:34,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:05:34,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 21:05:34,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 21:05:34,817 INFO L87 Difference]: Start difference. First operand 4024 states and 6166 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 21:05:35,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:05:35,506 INFO L93 Difference]: Finished difference Result 8072 states and 12369 transitions. [2024-11-18 21:05:35,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 21:05:35,507 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 228 [2024-11-18 21:05:35,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:05:35,546 INFO L225 Difference]: With dead ends: 8072 [2024-11-18 21:05:35,548 INFO L226 Difference]: Without dead ends: 4051 [2024-11-18 21:05:35,562 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-18 21:05:35,564 INFO L432 NwaCegarLoop]: 157 mSDtfsCounter, 114 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 21:05:35,564 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 461 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 21:05:35,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4051 states. [2024-11-18 21:05:35,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4051 to 4040. [2024-11-18 21:05:35,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4040 states, 3060 states have (on average 1.4222222222222223) internal successors, (4352), 3060 states have internal predecessors, (4352), 918 states have call successors, (918), 61 states have call predecessors, (918), 61 states have return successors, (918), 918 states have call predecessors, (918), 918 states have call successors, (918) [2024-11-18 21:05:35,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4040 states to 4040 states and 6188 transitions. [2024-11-18 21:05:35,876 INFO L78 Accepts]: Start accepts. Automaton has 4040 states and 6188 transitions. Word has length 228 [2024-11-18 21:05:35,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:05:35,877 INFO L471 AbstractCegarLoop]: Abstraction has 4040 states and 6188 transitions. [2024-11-18 21:05:35,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 21:05:35,878 INFO L276 IsEmpty]: Start isEmpty. Operand 4040 states and 6188 transitions. [2024-11-18 21:05:35,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-11-18 21:05:35,882 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:05:35,882 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 21:05:35,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 21:05:35,882 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:05:35,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:05:35,883 INFO L85 PathProgramCache]: Analyzing trace with hash 868772618, now seen corresponding path program 1 times [2024-11-18 21:05:35,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:05:35,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443952576] [2024-11-18 21:05:35,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:05:35,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:05:35,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:05:36,353 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 63 proven. 36 refuted. 0 times theorem prover too weak. 2145 trivial. 0 not checked. [2024-11-18 21:05:36,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:05:36,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443952576] [2024-11-18 21:05:36,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443952576] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 21:05:36,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861223483] [2024-11-18 21:05:36,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:05:36,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 21:05:36,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 21:05:36,357 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 21:05:36,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 21:05:36,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:05:36,541 INFO L255 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-18 21:05:36,550 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 21:05:38,174 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 1225 proven. 177 refuted. 0 times theorem prover too weak. 842 trivial. 0 not checked. [2024-11-18 21:05:38,174 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 21:05:38,750 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 42 proven. 57 refuted. 0 times theorem prover too weak. 2145 trivial. 0 not checked. [2024-11-18 21:05:38,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861223483] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 21:05:38,750 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 21:05:38,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 14, 7] total 23 [2024-11-18 21:05:38,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240833172] [2024-11-18 21:05:38,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 21:05:38,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-18 21:05:38,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:05:38,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-18 21:05:38,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2024-11-18 21:05:38,756 INFO L87 Difference]: Start difference. First operand 4040 states and 6188 transitions. Second operand has 23 states, 23 states have (on average 6.565217391304348) internal successors, (151), 22 states have internal predecessors, (151), 8 states have call successors, (100), 5 states have call predecessors, (100), 9 states have return successors, (100), 8 states have call predecessors, (100), 8 states have call successors, (100) [2024-11-18 21:05:47,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:05:47,520 INFO L93 Difference]: Finished difference Result 16385 states and 23910 transitions. [2024-11-18 21:05:47,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2024-11-18 21:05:47,521 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 6.565217391304348) internal successors, (151), 22 states have internal predecessors, (151), 8 states have call successors, (100), 5 states have call predecessors, (100), 9 states have return successors, (100), 8 states have call predecessors, (100), 8 states have call successors, (100) Word has length 228 [2024-11-18 21:05:47,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:05:47,612 INFO L225 Difference]: With dead ends: 16385 [2024-11-18 21:05:47,612 INFO L226 Difference]: Without dead ends: 12348 [2024-11-18 21:05:47,642 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 597 GetRequests, 454 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8607 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=4013, Invalid=16867, Unknown=0, NotChecked=0, Total=20880 [2024-11-18 21:05:47,643 INFO L432 NwaCegarLoop]: 239 mSDtfsCounter, 3168 mSDsluCounter, 1242 mSDsCounter, 0 mSdLazyCounter, 2385 mSolverCounterSat, 1025 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3168 SdHoareTripleChecker+Valid, 1481 SdHoareTripleChecker+Invalid, 3410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1025 IncrementalHoareTripleChecker+Valid, 2385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-18 21:05:47,643 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3168 Valid, 1481 Invalid, 3410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1025 Valid, 2385 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-18 21:05:47,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12348 states. [2024-11-18 21:05:48,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12348 to 8341. [2024-11-18 21:05:48,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8341 states, 6748 states have (on average 1.3783343212803794) internal successors, (9301), 6800 states have internal predecessors, (9301), 1362 states have call successors, (1362), 230 states have call predecessors, (1362), 230 states have return successors, (1362), 1310 states have call predecessors, (1362), 1362 states have call successors, (1362) [2024-11-18 21:05:48,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8341 states to 8341 states and 12025 transitions. [2024-11-18 21:05:48,661 INFO L78 Accepts]: Start accepts. Automaton has 8341 states and 12025 transitions. Word has length 228 [2024-11-18 21:05:48,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:05:48,662 INFO L471 AbstractCegarLoop]: Abstraction has 8341 states and 12025 transitions. [2024-11-18 21:05:48,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 6.565217391304348) internal successors, (151), 22 states have internal predecessors, (151), 8 states have call successors, (100), 5 states have call predecessors, (100), 9 states have return successors, (100), 8 states have call predecessors, (100), 8 states have call successors, (100) [2024-11-18 21:05:48,662 INFO L276 IsEmpty]: Start isEmpty. Operand 8341 states and 12025 transitions. [2024-11-18 21:05:48,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2024-11-18 21:05:48,665 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:05:48,666 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 21:05:48,685 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 21:05:48,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 21:05:48,870 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:05:48,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:05:48,871 INFO L85 PathProgramCache]: Analyzing trace with hash 220787055, now seen corresponding path program 1 times [2024-11-18 21:05:48,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:05:48,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918363471] [2024-11-18 21:05:48,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:05:48,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:05:48,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:05:50,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 57 proven. 135 refuted. 0 times theorem prover too weak. 2052 trivial. 0 not checked. [2024-11-18 21:05:50,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:05:50,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918363471] [2024-11-18 21:05:50,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918363471] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 21:05:50,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164700553] [2024-11-18 21:05:50,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:05:50,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 21:05:50,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 21:05:50,509 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 21:05:50,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 21:05:50,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:05:50,692 INFO L255 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-18 21:05:50,698 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 21:05:52,249 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 1141 proven. 336 refuted. 0 times theorem prover too weak. 767 trivial. 0 not checked. [2024-11-18 21:05:52,250 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 21:05:53,628 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 111 proven. 267 refuted. 0 times theorem prover too weak. 1866 trivial. 0 not checked. [2024-11-18 21:05:53,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164700553] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 21:05:53,629 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 21:05:53,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 15, 15] total 33 [2024-11-18 21:05:53,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265906984] [2024-11-18 21:05:53,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 21:05:53,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-18 21:05:53,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:05:53,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-18 21:05:53,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=795, Unknown=0, NotChecked=0, Total=1056 [2024-11-18 21:05:53,632 INFO L87 Difference]: Start difference. First operand 8341 states and 12025 transitions. Second operand has 33 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 13 states have call successors, (89), 5 states have call predecessors, (89), 12 states have return successors, (91), 12 states have call predecessors, (91), 13 states have call successors, (91) [2024-11-18 21:05:55,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:05:55,353 INFO L93 Difference]: Finished difference Result 12569 states and 17961 transitions. [2024-11-18 21:05:55,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-18 21:05:55,354 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 13 states have call successors, (89), 5 states have call predecessors, (89), 12 states have return successors, (91), 12 states have call predecessors, (91), 13 states have call successors, (91) Word has length 230 [2024-11-18 21:05:55,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:05:55,384 INFO L225 Difference]: With dead ends: 12569 [2024-11-18 21:05:55,384 INFO L226 Difference]: Without dead ends: 5884 [2024-11-18 21:05:55,404 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 443 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 770 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1038, Invalid=2384, Unknown=0, NotChecked=0, Total=3422 [2024-11-18 21:05:55,405 INFO L432 NwaCegarLoop]: 129 mSDtfsCounter, 1545 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 413 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1545 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 1035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 413 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 21:05:55,405 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1545 Valid, 507 Invalid, 1035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [413 Valid, 622 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 21:05:55,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2024-11-18 21:05:56,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5488. [2024-11-18 21:05:56,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5488 states, 4392 states have (on average 1.3743169398907105) internal successors, (6036), 4417 states have internal predecessors, (6036), 897 states have call successors, (897), 198 states have call predecessors, (897), 198 states have return successors, (897), 872 states have call predecessors, (897), 897 states have call successors, (897) [2024-11-18 21:05:56,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5488 states to 5488 states and 7830 transitions. [2024-11-18 21:05:56,078 INFO L78 Accepts]: Start accepts. Automaton has 5488 states and 7830 transitions. Word has length 230 [2024-11-18 21:05:56,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:05:56,079 INFO L471 AbstractCegarLoop]: Abstraction has 5488 states and 7830 transitions. [2024-11-18 21:05:56,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 13 states have call successors, (89), 5 states have call predecessors, (89), 12 states have return successors, (91), 12 states have call predecessors, (91), 13 states have call successors, (91) [2024-11-18 21:05:56,079 INFO L276 IsEmpty]: Start isEmpty. Operand 5488 states and 7830 transitions. [2024-11-18 21:05:56,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2024-11-18 21:05:56,082 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:05:56,082 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 21:05:56,102 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 21:05:56,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-18 21:05:56,287 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:05:56,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:05:56,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1941192137, now seen corresponding path program 1 times [2024-11-18 21:05:56,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:05:56,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535865229] [2024-11-18 21:05:56,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:05:56,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:05:56,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:05:56,480 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-18 21:05:56,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:05:56,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535865229] [2024-11-18 21:05:56,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535865229] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:05:56,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:05:56,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 21:05:56,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367530762] [2024-11-18 21:05:56,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:05:56,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 21:05:56,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:05:56,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 21:05:56,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 21:05:56,483 INFO L87 Difference]: Start difference. First operand 5488 states and 7830 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 21:05:57,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:05:57,425 INFO L93 Difference]: Finished difference Result 10648 states and 15110 transitions. [2024-11-18 21:05:57,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 21:05:57,426 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 231 [2024-11-18 21:05:57,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:05:57,453 INFO L225 Difference]: With dead ends: 10648 [2024-11-18 21:05:57,453 INFO L226 Difference]: Without dead ends: 6607 [2024-11-18 21:05:57,463 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-18 21:05:57,463 INFO L432 NwaCegarLoop]: 167 mSDtfsCounter, 356 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 21:05:57,464 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 469 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 21:05:57,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6607 states. [2024-11-18 21:05:57,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6607 to 5094. [2024-11-18 21:05:58,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5094 states, 4098 states have (on average 1.3831137140068326) internal successors, (5668), 4115 states have internal predecessors, (5668), 808 states have call successors, (808), 187 states have call predecessors, (808), 187 states have return successors, (808), 791 states have call predecessors, (808), 808 states have call successors, (808) [2024-11-18 21:05:58,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5094 states to 5094 states and 7284 transitions. [2024-11-18 21:05:58,024 INFO L78 Accepts]: Start accepts. Automaton has 5094 states and 7284 transitions. Word has length 231 [2024-11-18 21:05:58,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:05:58,025 INFO L471 AbstractCegarLoop]: Abstraction has 5094 states and 7284 transitions. [2024-11-18 21:05:58,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 21:05:58,025 INFO L276 IsEmpty]: Start isEmpty. Operand 5094 states and 7284 transitions. [2024-11-18 21:05:58,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2024-11-18 21:05:58,028 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:05:58,029 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 21:05:58,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-18 21:05:58,029 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:05:58,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:05:58,030 INFO L85 PathProgramCache]: Analyzing trace with hash 2147374295, now seen corresponding path program 1 times [2024-11-18 21:05:58,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:05:58,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80114384] [2024-11-18 21:05:58,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:05:58,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:05:58,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:05:58,521 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-18 21:05:58,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:05:58,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80114384] [2024-11-18 21:05:58,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80114384] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:05:58,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:05:58,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 21:05:58,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392582928] [2024-11-18 21:05:58,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:05:58,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 21:05:58,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:05:58,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 21:05:58,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-18 21:05:58,524 INFO L87 Difference]: Start difference. First operand 5094 states and 7284 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 21:06:00,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:06:00,020 INFO L93 Difference]: Finished difference Result 15053 states and 21545 transitions. [2024-11-18 21:06:00,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 21:06:00,021 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 231 [2024-11-18 21:06:00,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:06:00,065 INFO L225 Difference]: With dead ends: 15053 [2024-11-18 21:06:00,065 INFO L226 Difference]: Without dead ends: 9962 [2024-11-18 21:06:00,077 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-11-18 21:06:00,078 INFO L432 NwaCegarLoop]: 182 mSDtfsCounter, 403 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 21:06:00,078 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [403 Valid, 588 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 21:06:00,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9962 states. [2024-11-18 21:06:01,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9962 to 9938. [2024-11-18 21:06:01,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9938 states, 7926 states have (on average 1.3816553116326016) internal successors, (10951), 7963 states have internal predecessors, (10951), 1634 states have call successors, (1634), 377 states have call predecessors, (1634), 377 states have return successors, (1634), 1597 states have call predecessors, (1634), 1634 states have call successors, (1634) [2024-11-18 21:06:01,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9938 states to 9938 states and 14219 transitions. [2024-11-18 21:06:01,124 INFO L78 Accepts]: Start accepts. Automaton has 9938 states and 14219 transitions. Word has length 231 [2024-11-18 21:06:01,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:06:01,125 INFO L471 AbstractCegarLoop]: Abstraction has 9938 states and 14219 transitions. [2024-11-18 21:06:01,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 21:06:01,126 INFO L276 IsEmpty]: Start isEmpty. Operand 9938 states and 14219 transitions. [2024-11-18 21:06:01,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2024-11-18 21:06:01,128 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:06:01,128 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 21:06:01,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-18 21:06:01,128 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:06:01,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:06:01,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1395802580, now seen corresponding path program 1 times [2024-11-18 21:06:01,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:06:01,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809091262] [2024-11-18 21:06:01,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:06:01,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:06:01,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:06:01,666 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-18 21:06:01,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:06:01,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809091262] [2024-11-18 21:06:01,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809091262] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:06:01,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:06:01,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 21:06:01,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734006040] [2024-11-18 21:06:01,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:06:01,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 21:06:01,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:06:01,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 21:06:01,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-18 21:06:01,671 INFO L87 Difference]: Start difference. First operand 9938 states and 14219 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2024-11-18 21:06:03,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:06:03,250 INFO L93 Difference]: Finished difference Result 19015 states and 27166 transitions. [2024-11-18 21:06:03,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 21:06:03,250 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 231 [2024-11-18 21:06:03,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:06:03,305 INFO L225 Difference]: With dead ends: 19015 [2024-11-18 21:06:03,306 INFO L226 Difference]: Without dead ends: 10568 [2024-11-18 21:06:03,328 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-11-18 21:06:03,329 INFO L432 NwaCegarLoop]: 198 mSDtfsCounter, 309 mSDsluCounter, 663 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 861 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 21:06:03,329 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 861 Invalid, 713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 21:06:03,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10568 states. [2024-11-18 21:06:04,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10568 to 10528. [2024-11-18 21:06:04,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10528 states, 8489 states have (on average 1.3799034044057015) internal successors, (11714), 8534 states have internal predecessors, (11714), 1650 states have call successors, (1650), 388 states have call predecessors, (1650), 388 states have return successors, (1650), 1605 states have call predecessors, (1650), 1650 states have call successors, (1650) [2024-11-18 21:06:04,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10528 states to 10528 states and 15014 transitions. [2024-11-18 21:06:04,665 INFO L78 Accepts]: Start accepts. Automaton has 10528 states and 15014 transitions. Word has length 231 [2024-11-18 21:06:04,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:06:04,666 INFO L471 AbstractCegarLoop]: Abstraction has 10528 states and 15014 transitions. [2024-11-18 21:06:04,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2024-11-18 21:06:04,667 INFO L276 IsEmpty]: Start isEmpty. Operand 10528 states and 15014 transitions. [2024-11-18 21:06:04,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2024-11-18 21:06:04,669 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:06:04,669 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 21:06:04,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-18 21:06:04,669 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:06:04,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:06:04,670 INFO L85 PathProgramCache]: Analyzing trace with hash -856926150, now seen corresponding path program 1 times [2024-11-18 21:06:04,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:06:04,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503159299] [2024-11-18 21:06:04,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:06:04,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:06:04,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:06:04,795 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-18 21:06:04,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:06:04,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503159299] [2024-11-18 21:06:04,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503159299] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:06:04,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:06:04,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 21:06:04,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059856780] [2024-11-18 21:06:04,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:06:04,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 21:06:04,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:06:04,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 21:06:04,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 21:06:04,798 INFO L87 Difference]: Start difference. First operand 10528 states and 15014 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 21:06:07,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:06:07,005 INFO L93 Difference]: Finished difference Result 28568 states and 40701 transitions. [2024-11-18 21:06:07,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 21:06:07,005 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 232 [2024-11-18 21:06:07,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:06:07,072 INFO L225 Difference]: With dead ends: 28568 [2024-11-18 21:06:07,073 INFO L226 Difference]: Without dead ends: 19304 [2024-11-18 21:06:07,096 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 21:06:07,097 INFO L432 NwaCegarLoop]: 450 mSDtfsCounter, 297 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 21:06:07,097 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 806 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 21:06:07,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19304 states. [2024-11-18 21:06:09,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19304 to 19064. [2024-11-18 21:06:09,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19064 states, 15154 states have (on average 1.3547578197175663) internal successors, (20530), 15230 states have internal predecessors, (20530), 3168 states have call successors, (3168), 741 states have call predecessors, (3168), 741 states have return successors, (3168), 3092 states have call predecessors, (3168), 3168 states have call successors, (3168) [2024-11-18 21:06:09,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19064 states to 19064 states and 26866 transitions. [2024-11-18 21:06:09,484 INFO L78 Accepts]: Start accepts. Automaton has 19064 states and 26866 transitions. Word has length 232 [2024-11-18 21:06:09,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:06:09,485 INFO L471 AbstractCegarLoop]: Abstraction has 19064 states and 26866 transitions. [2024-11-18 21:06:09,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 21:06:09,486 INFO L276 IsEmpty]: Start isEmpty. Operand 19064 states and 26866 transitions. [2024-11-18 21:06:09,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2024-11-18 21:06:09,489 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:06:09,490 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 21:06:09,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-18 21:06:09,490 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:06:09,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:06:09,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1558526024, now seen corresponding path program 1 times [2024-11-18 21:06:09,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:06:09,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150963237] [2024-11-18 21:06:09,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:06:09,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:06:09,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:06:09,844 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-18 21:06:09,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:06:09,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150963237] [2024-11-18 21:06:09,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150963237] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:06:09,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:06:09,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 21:06:09,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909061232] [2024-11-18 21:06:09,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:06:09,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 21:06:09,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:06:09,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 21:06:09,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-18 21:06:09,849 INFO L87 Difference]: Start difference. First operand 19064 states and 26866 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 21:06:12,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:06:12,482 INFO L93 Difference]: Finished difference Result 35704 states and 50456 transitions. [2024-11-18 21:06:12,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 21:06:12,482 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 232 [2024-11-18 21:06:12,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:06:12,678 INFO L225 Difference]: With dead ends: 35704 [2024-11-18 21:06:12,679 INFO L226 Difference]: Without dead ends: 21647 [2024-11-18 21:06:12,705 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-18 21:06:12,706 INFO L432 NwaCegarLoop]: 183 mSDtfsCounter, 435 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 21:06:12,706 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 815 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 21:06:12,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21647 states. [2024-11-18 21:06:14,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21647 to 21587. [2024-11-18 21:06:14,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21587 states, 17012 states have (on average 1.3492240771220314) internal successors, (22953), 17093 states have internal predecessors, (22953), 3708 states have call successors, (3708), 866 states have call predecessors, (3708), 866 states have return successors, (3708), 3627 states have call predecessors, (3708), 3708 states have call successors, (3708) [2024-11-18 21:06:14,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21587 states to 21587 states and 30369 transitions. [2024-11-18 21:06:14,816 INFO L78 Accepts]: Start accepts. Automaton has 21587 states and 30369 transitions. Word has length 232 [2024-11-18 21:06:14,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:06:14,817 INFO L471 AbstractCegarLoop]: Abstraction has 21587 states and 30369 transitions. [2024-11-18 21:06:14,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 21:06:14,817 INFO L276 IsEmpty]: Start isEmpty. Operand 21587 states and 30369 transitions. [2024-11-18 21:06:14,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2024-11-18 21:06:14,820 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:06:14,820 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 21:06:14,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-18 21:06:14,820 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:06:14,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:06:14,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1256481585, now seen corresponding path program 1 times [2024-11-18 21:06:14,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:06:14,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651417523] [2024-11-18 21:06:14,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:06:14,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:06:14,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:06:15,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-18 21:06:15,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:06:15,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651417523] [2024-11-18 21:06:15,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651417523] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:06:15,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:06:15,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-18 21:06:15,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616746139] [2024-11-18 21:06:15,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:06:15,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 21:06:15,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:06:15,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 21:06:15,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-18 21:06:15,266 INFO L87 Difference]: Start difference. First operand 21587 states and 30369 transitions. Second operand has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2024-11-18 21:06:19,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:06:19,619 INFO L93 Difference]: Finished difference Result 36461 states and 51447 transitions. [2024-11-18 21:06:19,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-18 21:06:19,620 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 232 [2024-11-18 21:06:19,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:06:19,723 INFO L225 Difference]: With dead ends: 36461 [2024-11-18 21:06:19,723 INFO L226 Difference]: Without dead ends: 22813 [2024-11-18 21:06:19,763 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=121, Invalid=259, Unknown=0, NotChecked=0, Total=380 [2024-11-18 21:06:19,764 INFO L432 NwaCegarLoop]: 407 mSDtfsCounter, 555 mSDsluCounter, 1310 mSDsCounter, 0 mSdLazyCounter, 1499 mSolverCounterSat, 284 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 1717 SdHoareTripleChecker+Invalid, 1783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 284 IncrementalHoareTripleChecker+Valid, 1499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-18 21:06:19,764 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [555 Valid, 1717 Invalid, 1783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [284 Valid, 1499 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-18 21:06:19,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22813 states.