./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-52.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-ci_file-52.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 b4834357d23aac5c2a51d001b1c25f4722c265308db77262bd19157b1e0789ed --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 20:46:11,351 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 20:46:11,441 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 20:46:11,447 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 20:46:11,448 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 20:46:11,482 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 20:46:11,484 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 20:46:11,484 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 20:46:11,485 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 20:46:11,486 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 20:46:11,487 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 20:46:11,487 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 20:46:11,488 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 20:46:11,490 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 20:46:11,490 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 20:46:11,490 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 20:46:11,491 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 20:46:11,491 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 20:46:11,491 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 20:46:11,491 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 20:46:11,492 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 20:46:11,494 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 20:46:11,494 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 20:46:11,495 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 20:46:11,495 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 20:46:11,495 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 20:46:11,495 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 20:46:11,496 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 20:46:11,496 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 20:46:11,496 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 20:46:11,496 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 20:46:11,496 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 20:46:11,497 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 20:46:11,497 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 20:46:11,497 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 20:46:11,497 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 20:46:11,498 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 20:46:11,498 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 20:46:11,499 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 20:46:11,500 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 20:46:11,500 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 20:46:11,500 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 20:46:11,501 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b4834357d23aac5c2a51d001b1c25f4722c265308db77262bd19157b1e0789ed [2024-11-18 20:46:11,765 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 20:46:11,791 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 20:46:11,794 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 20:46:11,796 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 20:46:11,796 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 20:46:11,797 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-52.i [2024-11-18 20:46:13,277 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 20:46:13,495 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 20:46:13,496 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-52.i [2024-11-18 20:46:13,509 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a4b95583/71f97a5282be4f4e8f3ff80989dcd5cb/FLAGb68933d85 [2024-11-18 20:46:13,859 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a4b95583/71f97a5282be4f4e8f3ff80989dcd5cb [2024-11-18 20:46:13,861 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 20:46:13,863 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 20:46:13,865 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 20:46:13,865 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 20:46:13,870 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 20:46:13,871 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:46:13" (1/1) ... [2024-11-18 20:46:13,872 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e11c823 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:46:13, skipping insertion in model container [2024-11-18 20:46:13,872 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:46:13" (1/1) ... [2024-11-18 20:46:13,901 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 20:46:14,103 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-ci_file-52.i[919,932] [2024-11-18 20:46:14,198 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 20:46:14,223 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 20:46:14,234 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-ci_file-52.i[919,932] [2024-11-18 20:46:14,276 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 20:46:14,301 INFO L204 MainTranslator]: Completed translation [2024-11-18 20:46:14,304 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:46:14 WrapperNode [2024-11-18 20:46:14,305 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 20:46:14,306 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 20:46:14,306 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 20:46:14,306 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 20:46:14,313 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:46:14" (1/1) ... [2024-11-18 20:46:14,323 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:46:14" (1/1) ... [2024-11-18 20:46:14,370 INFO L138 Inliner]: procedures = 26, calls = 30, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 193 [2024-11-18 20:46:14,370 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 20:46:14,371 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 20:46:14,371 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 20:46:14,371 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 20:46:14,385 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:46:14" (1/1) ... [2024-11-18 20:46:14,386 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:46:14" (1/1) ... [2024-11-18 20:46:14,390 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:46:14" (1/1) ... [2024-11-18 20:46:14,407 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 20:46:14,408 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:46:14" (1/1) ... [2024-11-18 20:46:14,408 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:46:14" (1/1) ... [2024-11-18 20:46:14,419 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:46:14" (1/1) ... [2024-11-18 20:46:14,423 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:46:14" (1/1) ... [2024-11-18 20:46:14,432 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:46:14" (1/1) ... [2024-11-18 20:46:14,438 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:46:14" (1/1) ... [2024-11-18 20:46:14,444 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 20:46:14,448 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 20:46:14,448 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 20:46:14,448 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 20:46:14,449 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:46:14" (1/1) ... [2024-11-18 20:46:14,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 20:46:14,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 20:46:14,487 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 20:46:14,491 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 20:46:14,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 20:46:14,529 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 20:46:14,529 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 20:46:14,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 20:46:14,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 20:46:14,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 20:46:14,647 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 20:46:14,649 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 20:46:15,055 INFO L? ?]: Removed 22 outVars from TransFormulas that were not future-live. [2024-11-18 20:46:15,055 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 20:46:15,071 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 20:46:15,071 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 20:46:15,072 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:46:15 BoogieIcfgContainer [2024-11-18 20:46:15,072 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 20:46:15,074 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 20:46:15,074 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 20:46:15,077 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 20:46:15,078 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:46:13" (1/3) ... [2024-11-18 20:46:15,079 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@483414df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:46:15, skipping insertion in model container [2024-11-18 20:46:15,080 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:46:14" (2/3) ... [2024-11-18 20:46:15,080 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@483414df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:46:15, skipping insertion in model container [2024-11-18 20:46:15,080 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:46:15" (3/3) ... [2024-11-18 20:46:15,083 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-ci_file-52.i [2024-11-18 20:46:15,100 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 20:46:15,101 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 20:46:15,167 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 20:46:15,173 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;@d3cfd76, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 20:46:15,174 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 20:46:15,177 INFO L276 IsEmpty]: Start isEmpty. Operand has 80 states, 60 states have (on average 1.4833333333333334) internal successors, (89), 61 states have internal predecessors, (89), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-18 20:46:15,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-18 20:46:15,193 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:46:15,194 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:46:15,195 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:46:15,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:46:15,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1274090644, now seen corresponding path program 1 times [2024-11-18 20:46:15,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:46:15,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559964107] [2024-11-18 20:46:15,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:46:15,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:46:15,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:46:15,574 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2024-11-18 20:46:15,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:46:15,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559964107] [2024-11-18 20:46:15,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559964107] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 20:46:15,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125318012] [2024-11-18 20:46:15,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:46:15,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 20:46:15,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 20:46:15,581 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 20:46:15,583 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 20:46:15,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:46:15,753 INFO L255 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 20:46:15,762 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 20:46:15,801 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2024-11-18 20:46:15,802 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 20:46:15,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125318012] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:46:15,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 20:46:15,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 20:46:15,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510739938] [2024-11-18 20:46:15,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:46:15,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 20:46:15,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:46:15,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 20:46:15,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 20:46:15,846 INFO L87 Difference]: Start difference. First operand has 80 states, 60 states have (on average 1.4833333333333334) internal successors, (89), 61 states have internal predecessors, (89), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-18 20:46:15,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:46:15,881 INFO L93 Difference]: Finished difference Result 153 states and 257 transitions. [2024-11-18 20:46:15,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 20:46:15,884 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) Word has length 125 [2024-11-18 20:46:15,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:46:15,890 INFO L225 Difference]: With dead ends: 153 [2024-11-18 20:46:15,890 INFO L226 Difference]: Without dead ends: 76 [2024-11-18 20:46:15,893 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 126 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 20:46:15,896 INFO L432 NwaCegarLoop]: 116 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, 116 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 20:46:15,897 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 20:46:15,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-18 20:46:15,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2024-11-18 20:46:15,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 57 states have (on average 1.4385964912280702) internal successors, (82), 57 states have internal predecessors, (82), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-18 20:46:15,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 116 transitions. [2024-11-18 20:46:15,957 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 116 transitions. Word has length 125 [2024-11-18 20:46:15,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:46:15,958 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 116 transitions. [2024-11-18 20:46:15,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-18 20:46:15,959 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 116 transitions. [2024-11-18 20:46:15,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-18 20:46:15,965 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:46:15,966 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:46:15,988 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 20:46:16,166 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 20:46:16,167 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:46:16,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:46:16,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1743850586, now seen corresponding path program 1 times [2024-11-18 20:46:16,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:46:16,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547853412] [2024-11-18 20:46:16,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:46:16,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:46:16,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:46:16,589 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-18 20:46:16,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:46:16,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547853412] [2024-11-18 20:46:16,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547853412] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:46:16,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:46:16,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 20:46:16,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281226795] [2024-11-18 20:46:16,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:46:16,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 20:46:16,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:46:16,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 20:46:16,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 20:46:16,596 INFO L87 Difference]: Start difference. First operand 76 states and 116 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-18 20:46:16,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:46:16,721 INFO L93 Difference]: Finished difference Result 184 states and 284 transitions. [2024-11-18 20:46:16,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 20:46:16,722 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 125 [2024-11-18 20:46:16,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:46:16,724 INFO L225 Difference]: With dead ends: 184 [2024-11-18 20:46:16,724 INFO L226 Difference]: Without dead ends: 111 [2024-11-18 20:46:16,725 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 20:46:16,728 INFO L432 NwaCegarLoop]: 96 mSDtfsCounter, 42 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 20:46:16,730 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 181 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 20:46:16,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-11-18 20:46:16,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 97. [2024-11-18 20:46:16,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 78 states have (on average 1.5128205128205128) internal successors, (118), 78 states have internal predecessors, (118), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-18 20:46:16,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 152 transitions. [2024-11-18 20:46:16,747 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 152 transitions. Word has length 125 [2024-11-18 20:46:16,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:46:16,749 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 152 transitions. [2024-11-18 20:46:16,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-18 20:46:16,750 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 152 transitions. [2024-11-18 20:46:16,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-18 20:46:16,752 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:46:16,752 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:46:16,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 20:46:16,752 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:46:16,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:46:16,753 INFO L85 PathProgramCache]: Analyzing trace with hash -843643986, now seen corresponding path program 1 times [2024-11-18 20:46:16,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:46:16,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528938939] [2024-11-18 20:46:16,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:46:16,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:46:16,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:46:17,003 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-18 20:46:17,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:46:17,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528938939] [2024-11-18 20:46:17,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528938939] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:46:17,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:46:17,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 20:46:17,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530724262] [2024-11-18 20:46:17,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:46:17,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 20:46:17,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:46:17,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 20:46:17,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 20:46:17,011 INFO L87 Difference]: Start difference. First operand 97 states and 152 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-18 20:46:17,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:46:17,183 INFO L93 Difference]: Finished difference Result 170 states and 265 transitions. [2024-11-18 20:46:17,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 20:46:17,184 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 126 [2024-11-18 20:46:17,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:46:17,186 INFO L225 Difference]: With dead ends: 170 [2024-11-18 20:46:17,186 INFO L226 Difference]: Without dead ends: 76 [2024-11-18 20:46:17,187 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-18 20:46:17,188 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 142 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 20:46:17,188 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 152 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 20:46:17,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-18 20:46:17,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2024-11-18 20:46:17,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 57 states have (on average 1.3859649122807018) internal successors, (79), 57 states have internal predecessors, (79), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-18 20:46:17,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 113 transitions. [2024-11-18 20:46:17,197 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 113 transitions. Word has length 126 [2024-11-18 20:46:17,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:46:17,197 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 113 transitions. [2024-11-18 20:46:17,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-18 20:46:17,198 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 113 transitions. [2024-11-18 20:46:17,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-18 20:46:17,200 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:46:17,200 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:46:17,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 20:46:17,200 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:46:17,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:46:17,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1967725412, now seen corresponding path program 1 times [2024-11-18 20:46:17,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:46:17,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520965396] [2024-11-18 20:46:17,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:46:17,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:46:17,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:46:17,474 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-18 20:46:17,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:46:17,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520965396] [2024-11-18 20:46:17,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520965396] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:46:17,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:46:17,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 20:46:17,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224607096] [2024-11-18 20:46:17,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:46:17,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 20:46:17,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:46:17,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 20:46:17,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 20:46:17,482 INFO L87 Difference]: Start difference. First operand 76 states and 113 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-18 20:46:17,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:46:17,650 INFO L93 Difference]: Finished difference Result 162 states and 240 transitions. [2024-11-18 20:46:17,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 20:46:17,651 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 126 [2024-11-18 20:46:17,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:46:17,653 INFO L225 Difference]: With dead ends: 162 [2024-11-18 20:46:17,653 INFO L226 Difference]: Without dead ends: 89 [2024-11-18 20:46:17,653 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 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 20:46:17,654 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 57 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 20:46:17,655 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 232 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 20:46:17,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-18 20:46:17,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 88. [2024-11-18 20:46:17,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 64 states have (on average 1.34375) internal successors, (86), 65 states have internal predecessors, (86), 21 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-18 20:46:17,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 128 transitions. [2024-11-18 20:46:17,673 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 128 transitions. Word has length 126 [2024-11-18 20:46:17,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:46:17,673 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 128 transitions. [2024-11-18 20:46:17,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-18 20:46:17,674 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 128 transitions. [2024-11-18 20:46:17,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-18 20:46:17,679 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:46:17,679 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:46:17,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 20:46:17,680 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:46:17,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:46:17,680 INFO L85 PathProgramCache]: Analyzing trace with hash 2024983714, now seen corresponding path program 1 times [2024-11-18 20:46:17,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:46:17,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431186016] [2024-11-18 20:46:17,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:46:17,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:46:17,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:46:18,736 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-18 20:46:18,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:46:18,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431186016] [2024-11-18 20:46:18,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431186016] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:46:18,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:46:18,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 20:46:18,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569656491] [2024-11-18 20:46:18,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:46:18,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 20:46:18,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:46:18,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 20:46:18,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 20:46:18,742 INFO L87 Difference]: Start difference. First operand 88 states and 128 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-18 20:46:19,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:46:19,028 INFO L93 Difference]: Finished difference Result 272 states and 396 transitions. [2024-11-18 20:46:19,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 20:46:19,030 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 126 [2024-11-18 20:46:19,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:46:19,032 INFO L225 Difference]: With dead ends: 272 [2024-11-18 20:46:19,033 INFO L226 Difference]: Without dead ends: 194 [2024-11-18 20:46:19,034 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-18 20:46:19,036 INFO L432 NwaCegarLoop]: 151 mSDtfsCounter, 170 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 20:46:19,037 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 392 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 20:46:19,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-11-18 20:46:19,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 189. [2024-11-18 20:46:19,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 132 states have (on average 1.3181818181818181) internal successors, (174), 133 states have internal predecessors, (174), 51 states have call successors, (51), 5 states have call predecessors, (51), 5 states have return successors, (51), 50 states have call predecessors, (51), 51 states have call successors, (51) [2024-11-18 20:46:19,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 276 transitions. [2024-11-18 20:46:19,072 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 276 transitions. Word has length 126 [2024-11-18 20:46:19,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:46:19,073 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 276 transitions. [2024-11-18 20:46:19,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-18 20:46:19,073 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 276 transitions. [2024-11-18 20:46:19,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-18 20:46:19,075 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:46:19,075 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:46:19,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 20:46:19,079 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:46:19,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:46:19,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1342149823, now seen corresponding path program 1 times [2024-11-18 20:46:19,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:46:19,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206652624] [2024-11-18 20:46:19,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:46:19,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:46:19,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:46:30,654 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-18 20:46:30,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:46:30,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206652624] [2024-11-18 20:46:30,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206652624] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:46:30,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:46:30,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-18 20:46:30,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868724420] [2024-11-18 20:46:30,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:46:30,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 20:46:30,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:46:30,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 20:46:30,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-11-18 20:46:30,661 INFO L87 Difference]: Start difference. First operand 189 states and 276 transitions. Second operand has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 4 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-18 20:46:32,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:46:32,011 INFO L93 Difference]: Finished difference Result 450 states and 655 transitions. [2024-11-18 20:46:32,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 20:46:32,012 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 4 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) Word has length 128 [2024-11-18 20:46:32,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:46:32,014 INFO L225 Difference]: With dead ends: 450 [2024-11-18 20:46:32,014 INFO L226 Difference]: Without dead ends: 296 [2024-11-18 20:46:32,015 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2024-11-18 20:46:32,020 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 537 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 20:46:32,020 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [537 Valid, 538 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 20:46:32,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2024-11-18 20:46:32,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 230. [2024-11-18 20:46:32,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 173 states have (on average 1.3526011560693643) internal successors, (234), 173 states have internal predecessors, (234), 51 states have call successors, (51), 5 states have call predecessors, (51), 5 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2024-11-18 20:46:32,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 336 transitions. [2024-11-18 20:46:32,085 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 336 transitions. Word has length 128 [2024-11-18 20:46:32,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:46:32,086 INFO L471 AbstractCegarLoop]: Abstraction has 230 states and 336 transitions. [2024-11-18 20:46:32,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 4 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-18 20:46:32,087 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 336 transitions. [2024-11-18 20:46:32,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-18 20:46:32,093 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:46:32,093 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:46:32,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 20:46:32,093 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:46:32,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:46:32,094 INFO L85 PathProgramCache]: Analyzing trace with hash -246198079, now seen corresponding path program 1 times [2024-11-18 20:46:32,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:46:32,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175293942] [2024-11-18 20:46:32,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:46:32,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:46:32,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:46:32,349 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-18 20:46:32,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:46:32,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175293942] [2024-11-18 20:46:32,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175293942] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:46:32,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:46:32,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 20:46:32,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824604874] [2024-11-18 20:46:32,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:46:32,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 20:46:32,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:46:32,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 20:46:32,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 20:46:32,354 INFO L87 Difference]: Start difference. First operand 230 states and 336 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-18 20:46:32,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:46:32,683 INFO L93 Difference]: Finished difference Result 545 states and 796 transitions. [2024-11-18 20:46:32,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 20:46:32,683 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 128 [2024-11-18 20:46:32,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:46:32,687 INFO L225 Difference]: With dead ends: 545 [2024-11-18 20:46:32,688 INFO L226 Difference]: Without dead ends: 391 [2024-11-18 20:46:32,689 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-18 20:46:32,690 INFO L432 NwaCegarLoop]: 199 mSDtfsCounter, 250 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 20:46:32,691 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 394 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 20:46:32,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2024-11-18 20:46:32,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 387. [2024-11-18 20:46:32,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 292 states have (on average 1.3493150684931507) internal successors, (394), 292 states have internal predecessors, (394), 85 states have call successors, (85), 9 states have call predecessors, (85), 9 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2024-11-18 20:46:32,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 564 transitions. [2024-11-18 20:46:32,733 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 564 transitions. Word has length 128 [2024-11-18 20:46:32,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:46:32,734 INFO L471 AbstractCegarLoop]: Abstraction has 387 states and 564 transitions. [2024-11-18 20:46:32,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-18 20:46:32,734 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 564 transitions. [2024-11-18 20:46:32,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-18 20:46:32,737 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:46:32,737 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:46:32,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 20:46:32,738 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:46:32,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:46:32,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1507748929, now seen corresponding path program 1 times [2024-11-18 20:46:32,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:46:32,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36247394] [2024-11-18 20:46:32,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:46:32,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:46:32,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:46:32,970 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-18 20:46:32,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:46:32,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36247394] [2024-11-18 20:46:32,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36247394] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:46:32,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:46:32,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 20:46:32,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468363302] [2024-11-18 20:46:32,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:46:32,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 20:46:32,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:46:32,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 20:46:32,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 20:46:32,973 INFO L87 Difference]: Start difference. First operand 387 states and 564 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-18 20:46:33,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:46:33,219 INFO L93 Difference]: Finished difference Result 840 states and 1225 transitions. [2024-11-18 20:46:33,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 20:46:33,220 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 128 [2024-11-18 20:46:33,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:46:33,225 INFO L225 Difference]: With dead ends: 840 [2024-11-18 20:46:33,225 INFO L226 Difference]: Without dead ends: 529 [2024-11-18 20:46:33,227 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-18 20:46:33,228 INFO L432 NwaCegarLoop]: 208 mSDtfsCounter, 148 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 20:46:33,229 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 453 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 20:46:33,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2024-11-18 20:46:33,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 431. [2024-11-18 20:46:33,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 336 states have (on average 1.3779761904761905) internal successors, (463), 336 states have internal predecessors, (463), 85 states have call successors, (85), 9 states have call predecessors, (85), 9 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2024-11-18 20:46:33,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 633 transitions. [2024-11-18 20:46:33,271 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 633 transitions. Word has length 128 [2024-11-18 20:46:33,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:46:33,272 INFO L471 AbstractCegarLoop]: Abstraction has 431 states and 633 transitions. [2024-11-18 20:46:33,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-18 20:46:33,273 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 633 transitions. [2024-11-18 20:46:33,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-18 20:46:33,274 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:46:33,274 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:46:33,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 20:46:33,274 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:46:33,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:46:33,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1198870465, now seen corresponding path program 1 times [2024-11-18 20:46:33,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:46:33,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013238546] [2024-11-18 20:46:33,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:46:33,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:46:33,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:46:33,438 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-18 20:46:33,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:46:33,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013238546] [2024-11-18 20:46:33,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013238546] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:46:33,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:46:33,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 20:46:33,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175540993] [2024-11-18 20:46:33,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:46:33,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 20:46:33,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:46:33,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 20:46:33,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 20:46:33,441 INFO L87 Difference]: Start difference. First operand 431 states and 633 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-18 20:46:33,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:46:33,632 INFO L93 Difference]: Finished difference Result 773 states and 1134 transitions. [2024-11-18 20:46:33,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 20:46:33,632 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 128 [2024-11-18 20:46:33,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:46:33,636 INFO L225 Difference]: With dead ends: 773 [2024-11-18 20:46:33,636 INFO L226 Difference]: Without dead ends: 417 [2024-11-18 20:46:33,637 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-18 20:46:33,637 INFO L432 NwaCegarLoop]: 140 mSDtfsCounter, 226 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 20:46:33,638 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 333 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 20:46:33,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2024-11-18 20:46:33,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 274. [2024-11-18 20:46:33,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 217 states have (on average 1.3963133640552996) internal successors, (303), 217 states have internal predecessors, (303), 51 states have call successors, (51), 5 states have call predecessors, (51), 5 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2024-11-18 20:46:33,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 405 transitions. [2024-11-18 20:46:33,680 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 405 transitions. Word has length 128 [2024-11-18 20:46:33,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:46:33,682 INFO L471 AbstractCegarLoop]: Abstraction has 274 states and 405 transitions. [2024-11-18 20:46:33,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-18 20:46:33,682 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 405 transitions. [2024-11-18 20:46:33,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-18 20:46:33,683 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:46:33,684 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:46:33,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 20:46:33,684 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:46:33,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:46:33,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1988543258, now seen corresponding path program 1 times [2024-11-18 20:46:33,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:46:33,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904781112] [2024-11-18 20:46:33,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:46:33,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:46:33,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:46:34,186 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-18 20:46:34,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:46:34,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904781112] [2024-11-18 20:46:34,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904781112] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:46:34,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:46:34,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 20:46:34,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7370494] [2024-11-18 20:46:34,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:46:34,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 20:46:34,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:46:34,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 20:46:34,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-18 20:46:34,189 INFO L87 Difference]: Start difference. First operand 274 states and 405 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-18 20:46:34,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:46:34,322 INFO L93 Difference]: Finished difference Result 594 states and 862 transitions. [2024-11-18 20:46:34,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 20:46:34,323 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 130 [2024-11-18 20:46:34,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:46:34,327 INFO L225 Difference]: With dead ends: 594 [2024-11-18 20:46:34,327 INFO L226 Difference]: Without dead ends: 392 [2024-11-18 20:46:34,328 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-18 20:46:34,329 INFO L432 NwaCegarLoop]: 111 mSDtfsCounter, 108 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 20:46:34,329 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 309 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 20:46:34,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2024-11-18 20:46:34,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 303. [2024-11-18 20:46:34,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 243 states have (on average 1.3209876543209877) internal successors, (321), 243 states have internal predecessors, (321), 51 states have call successors, (51), 8 states have call predecessors, (51), 8 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2024-11-18 20:46:34,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 423 transitions. [2024-11-18 20:46:34,363 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 423 transitions. Word has length 130 [2024-11-18 20:46:34,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:46:34,365 INFO L471 AbstractCegarLoop]: Abstraction has 303 states and 423 transitions. [2024-11-18 20:46:34,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-18 20:46:34,365 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 423 transitions. [2024-11-18 20:46:34,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-18 20:46:34,366 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:46:34,367 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:46:34,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 20:46:34,367 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:46:34,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:46:34,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1136834660, now seen corresponding path program 1 times [2024-11-18 20:46:34,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:46:34,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071592247] [2024-11-18 20:46:34,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:46:34,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:46:34,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:46:34,670 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-18 20:46:34,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:46:34,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071592247] [2024-11-18 20:46:34,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071592247] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:46:34,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:46:34,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 20:46:34,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525649404] [2024-11-18 20:46:34,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:46:34,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 20:46:34,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:46:34,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 20:46:34,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-18 20:46:34,672 INFO L87 Difference]: Start difference. First operand 303 states and 423 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-18 20:46:35,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:46:35,155 INFO L93 Difference]: Finished difference Result 609 states and 843 transitions. [2024-11-18 20:46:35,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 20:46:35,156 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 130 [2024-11-18 20:46:35,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:46:35,161 INFO L225 Difference]: With dead ends: 609 [2024-11-18 20:46:35,163 INFO L226 Difference]: Without dead ends: 359 [2024-11-18 20:46:35,163 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2024-11-18 20:46:35,164 INFO L432 NwaCegarLoop]: 142 mSDtfsCounter, 157 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 20:46:35,164 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 473 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 20:46:35,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2024-11-18 20:46:35,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 321. [2024-11-18 20:46:35,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 261 states have (on average 1.314176245210728) internal successors, (343), 261 states have internal predecessors, (343), 51 states have call successors, (51), 8 states have call predecessors, (51), 8 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2024-11-18 20:46:35,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 445 transitions. [2024-11-18 20:46:35,195 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 445 transitions. Word has length 130 [2024-11-18 20:46:35,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:46:35,196 INFO L471 AbstractCegarLoop]: Abstraction has 321 states and 445 transitions. [2024-11-18 20:46:35,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-18 20:46:35,196 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 445 transitions. [2024-11-18 20:46:35,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-18 20:46:35,198 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:46:35,198 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:46:35,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 20:46:35,198 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:46:35,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:46:35,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1194092962, now seen corresponding path program 1 times [2024-11-18 20:46:35,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:46:35,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072397625] [2024-11-18 20:46:35,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:46:35,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:46:35,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:46:40,642 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-18 20:46:40,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:46:40,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072397625] [2024-11-18 20:46:40,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072397625] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:46:40,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:46:40,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-18 20:46:40,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242204273] [2024-11-18 20:46:40,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:46:40,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-18 20:46:40,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:46:40,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-18 20:46:40,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2024-11-18 20:46:40,647 INFO L87 Difference]: Start difference. First operand 321 states and 445 transitions. Second operand has 16 states, 16 states have (on average 3.0) internal successors, (48), 16 states have internal predecessors, (48), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-18 20:46:43,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:46:43,259 INFO L93 Difference]: Finished difference Result 431 states and 577 transitions. [2024-11-18 20:46:43,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-18 20:46:43,260 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 16 states have internal predecessors, (48), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 130 [2024-11-18 20:46:43,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:46:43,263 INFO L225 Difference]: With dead ends: 431 [2024-11-18 20:46:43,264 INFO L226 Difference]: Without dead ends: 429 [2024-11-18 20:46:43,264 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=276, Invalid=594, Unknown=0, NotChecked=0, Total=870 [2024-11-18 20:46:43,265 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 598 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 598 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 20:46:43,265 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [598 Valid, 283 Invalid, 680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 20:46:43,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2024-11-18 20:46:43,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 344. [2024-11-18 20:46:43,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 284 states have (on average 1.2992957746478873) internal successors, (369), 284 states have internal predecessors, (369), 51 states have call successors, (51), 8 states have call predecessors, (51), 8 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2024-11-18 20:46:43,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 471 transitions. [2024-11-18 20:46:43,297 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 471 transitions. Word has length 130 [2024-11-18 20:46:43,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:46:43,297 INFO L471 AbstractCegarLoop]: Abstraction has 344 states and 471 transitions. [2024-11-18 20:46:43,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 16 states have internal predecessors, (48), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-18 20:46:43,298 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 471 transitions. [2024-11-18 20:46:43,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-18 20:46:43,300 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:46:43,300 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:46:43,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 20:46:43,301 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:46:43,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:46:43,301 INFO L85 PathProgramCache]: Analyzing trace with hash 90927752, now seen corresponding path program 1 times [2024-11-18 20:46:43,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:46:43,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309035144] [2024-11-18 20:46:43,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:46:43,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:46:43,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat