./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-39.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_variablewrapping_wrapper-sp_file-39.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 9000cc374a0af085b03570a511ad19fd711a120ab7f5d5a9a2c4565265355a73 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 01:17:01,520 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 01:17:01,591 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 01:17:01,598 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 01:17:01,599 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 01:17:01,628 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 01:17:01,629 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 01:17:01,629 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 01:17:01,630 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 01:17:01,630 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 01:17:01,645 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 01:17:01,646 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 01:17:01,647 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 01:17:01,647 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 01:17:01,647 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 01:17:01,648 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 01:17:01,648 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 01:17:01,648 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 01:17:01,649 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 01:17:01,649 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 01:17:01,650 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 01:17:01,650 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 01:17:01,650 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 01:17:01,651 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 01:17:01,651 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 01:17:01,651 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 01:17:01,652 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 01:17:01,652 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 01:17:01,652 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 01:17:01,653 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 01:17:01,653 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 01:17:01,653 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 01:17:01,653 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:17:01,654 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 01:17:01,654 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 01:17:01,654 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 01:17:01,655 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 01:17:01,655 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 01:17:01,655 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 01:17:01,656 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 01:17:01,656 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 01:17:01,657 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 01:17:01,657 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9000cc374a0af085b03570a511ad19fd711a120ab7f5d5a9a2c4565265355a73 [2024-11-19 01:17:01,929 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 01:17:01,957 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 01:17:01,960 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 01:17:01,961 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 01:17:01,962 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 01:17:01,963 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-39.i [2024-11-19 01:17:03,419 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 01:17:03,615 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 01:17:03,616 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-39.i [2024-11-19 01:17:03,630 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82ba786a6/02dc3c8d5dca4282ba1f064c31dba1ea/FLAG6a5736cb4 [2024-11-19 01:17:03,986 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82ba786a6/02dc3c8d5dca4282ba1f064c31dba1ea [2024-11-19 01:17:03,988 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 01:17:03,989 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 01:17:03,990 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 01:17:03,990 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 01:17:03,995 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 01:17:03,995 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:17:03" (1/1) ... [2024-11-19 01:17:03,996 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@87a0896 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:17:03, skipping insertion in model container [2024-11-19 01:17:03,996 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:17:03" (1/1) ... [2024-11-19 01:17:04,028 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 01:17:04,185 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_variablewrapping_wrapper-sp_file-39.i[917,930] [2024-11-19 01:17:04,242 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:17:04,253 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 01:17:04,263 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_variablewrapping_wrapper-sp_file-39.i[917,930] [2024-11-19 01:17:04,298 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:17:04,331 INFO L204 MainTranslator]: Completed translation [2024-11-19 01:17:04,332 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:17:04 WrapperNode [2024-11-19 01:17:04,332 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 01:17:04,333 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 01:17:04,334 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 01:17:04,334 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 01:17:04,340 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:17:04" (1/1) ... [2024-11-19 01:17:04,353 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:17:04" (1/1) ... [2024-11-19 01:17:04,405 INFO L138 Inliner]: procedures = 30, calls = 188, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 612 [2024-11-19 01:17:04,406 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 01:17:04,406 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 01:17:04,407 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 01:17:04,407 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 01:17:04,418 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:17:04" (1/1) ... [2024-11-19 01:17:04,418 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:17:04" (1/1) ... [2024-11-19 01:17:04,426 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:17:04" (1/1) ... [2024-11-19 01:17:04,433 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Memory array in LHS [2024-11-19 01:17:04,433 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:17:04" (1/1) ... [2024-11-19 01:17:04,433 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:17:04" (1/1) ... [2024-11-19 01:17:04,451 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:17:04" (1/1) ... [2024-11-19 01:17:04,460 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:17:04" (1/1) ... [2024-11-19 01:17:04,463 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:17:04" (1/1) ... [2024-11-19 01:17:04,469 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:17:04" (1/1) ... [2024-11-19 01:17:04,476 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 01:17:04,477 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 01:17:04,478 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 01:17:04,478 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 01:17:04,479 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:17:04" (1/1) ... [2024-11-19 01:17:04,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:17:04,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:17:04,515 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) [2024-11-19 01:17:04,522 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 [2024-11-19 01:17:04,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 01:17:04,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2024-11-19 01:17:04,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-11-19 01:17:04,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2024-11-19 01:17:04,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-19 01:17:04,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2024-11-19 01:17:04,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-19 01:17:04,572 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-19 01:17:04,572 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-19 01:17:04,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-19 01:17:04,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 01:17:04,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 01:17:04,711 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 01:17:04,714 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 01:17:05,273 INFO L? ?]: Removed 188 outVars from TransFormulas that were not future-live. [2024-11-19 01:17:05,274 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 01:17:05,290 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 01:17:05,294 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-19 01:17:05,295 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:17:05 BoogieIcfgContainer [2024-11-19 01:17:05,295 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 01:17:05,297 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 01:17:05,301 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 01:17:05,304 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 01:17:05,308 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:17:03" (1/3) ... [2024-11-19 01:17:05,309 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f4619bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:17:05, skipping insertion in model container [2024-11-19 01:17:05,309 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:17:04" (2/3) ... [2024-11-19 01:17:05,309 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f4619bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:17:05, skipping insertion in model container [2024-11-19 01:17:05,309 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:17:05" (3/3) ... [2024-11-19 01:17:05,310 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-sp_file-39.i [2024-11-19 01:17:05,325 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 01:17:05,325 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 01:17:05,375 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 01:17:05,380 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;@7a52e56e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 01:17:05,380 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-19 01:17:05,384 INFO L276 IsEmpty]: Start isEmpty. Operand has 120 states, 101 states have (on average 1.4356435643564356) internal successors, (145), 102 states have internal predecessors, (145), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-19 01:17:05,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-19 01:17:05,400 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:17:05,401 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:17:05,401 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:17:05,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:17:05,406 INFO L85 PathProgramCache]: Analyzing trace with hash 276579875, now seen corresponding path program 1 times [2024-11-19 01:17:05,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:17:05,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964222886] [2024-11-19 01:17:05,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:17:05,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:17:05,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:17:05,858 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2024-11-19 01:17:05,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:17:05,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964222886] [2024-11-19 01:17:05,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964222886] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:17:05,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294348064] [2024-11-19 01:17:05,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:17:05,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:17:05,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:17:05,863 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) [2024-11-19 01:17:05,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 01:17:06,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:17:06,146 INFO L255 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-19 01:17:06,155 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:17:06,185 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2024-11-19 01:17:06,185 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 01:17:06,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294348064] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:17:06,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 01:17:06,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-19 01:17:06,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751872394] [2024-11-19 01:17:06,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:17:06,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 01:17:06,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:17:06,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 01:17:06,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 01:17:06,256 INFO L87 Difference]: Start difference. First operand has 120 states, 101 states have (on average 1.4356435643564356) internal successors, (145), 102 states have internal predecessors, (145), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-19 01:17:06,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:17:06,311 INFO L93 Difference]: Finished difference Result 233 states and 364 transitions. [2024-11-19 01:17:06,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 01:17:06,314 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 128 [2024-11-19 01:17:06,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:17:06,320 INFO L225 Difference]: With dead ends: 233 [2024-11-19 01:17:06,320 INFO L226 Difference]: Without dead ends: 116 [2024-11-19 01:17:06,322 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 01:17:06,325 INFO L432 NwaCegarLoop]: 170 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, 170 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 [2024-11-19 01:17:06,326 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 01:17:06,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-19 01:17:06,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2024-11-19 01:17:06,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 98 states have (on average 1.4081632653061225) internal successors, (138), 98 states have internal predecessors, (138), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-19 01:17:06,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 170 transitions. [2024-11-19 01:17:06,369 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 170 transitions. Word has length 128 [2024-11-19 01:17:06,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:17:06,370 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 170 transitions. [2024-11-19 01:17:06,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-19 01:17:06,370 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 170 transitions. [2024-11-19 01:17:06,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-19 01:17:06,373 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:17:06,373 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:17:06,387 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 01:17:06,574 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 [2024-11-19 01:17:06,575 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:17:06,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:17:06,575 INFO L85 PathProgramCache]: Analyzing trace with hash 534061159, now seen corresponding path program 1 times [2024-11-19 01:17:06,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:17:06,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317183165] [2024-11-19 01:17:06,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:17:06,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:17:06,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:17:06,963 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 01:17:06,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:17:06,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317183165] [2024-11-19 01:17:06,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317183165] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:17:06,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:17:06,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:17:06,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869933060] [2024-11-19 01:17:06,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:17:06,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:17:06,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:17:06,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:17:06,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:17:06,971 INFO L87 Difference]: Start difference. First operand 116 states and 170 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-19 01:17:07,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:17:07,016 INFO L93 Difference]: Finished difference Result 231 states and 340 transitions. [2024-11-19 01:17:07,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:17:07,017 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 128 [2024-11-19 01:17:07,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:17:07,020 INFO L225 Difference]: With dead ends: 231 [2024-11-19 01:17:07,024 INFO L226 Difference]: Without dead ends: 118 [2024-11-19 01:17:07,025 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:17:07,027 INFO L432 NwaCegarLoop]: 168 mSDtfsCounter, 0 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 01:17:07,029 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 493 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 01:17:07,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-11-19 01:17:07,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2024-11-19 01:17:07,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 100 states have (on average 1.4) internal successors, (140), 100 states have internal predecessors, (140), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-19 01:17:07,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 172 transitions. [2024-11-19 01:17:07,050 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 172 transitions. Word has length 128 [2024-11-19 01:17:07,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:17:07,054 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 172 transitions. [2024-11-19 01:17:07,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-19 01:17:07,054 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 172 transitions. [2024-11-19 01:17:07,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-19 01:17:07,057 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:17:07,057 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:17:07,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 01:17:07,059 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:17:07,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:17:07,060 INFO L85 PathProgramCache]: Analyzing trace with hash -726856091, now seen corresponding path program 1 times [2024-11-19 01:17:07,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:17:07,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907307254] [2024-11-19 01:17:07,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:17:07,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:17:07,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:17:10,602 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 01:17:10,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:17:10,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907307254] [2024-11-19 01:17:10,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907307254] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:17:10,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:17:10,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 01:17:10,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277223295] [2024-11-19 01:17:10,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:17:10,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 01:17:10,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:17:10,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 01:17:10,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-19 01:17:10,610 INFO L87 Difference]: Start difference. First operand 118 states and 172 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-19 01:17:11,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:17:11,465 INFO L93 Difference]: Finished difference Result 305 states and 445 transitions. [2024-11-19 01:17:11,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 01:17:11,466 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 128 [2024-11-19 01:17:11,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:17:11,468 INFO L225 Difference]: With dead ends: 305 [2024-11-19 01:17:11,468 INFO L226 Difference]: Without dead ends: 190 [2024-11-19 01:17:11,469 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2024-11-19 01:17:11,473 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 671 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 671 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 01:17:11,474 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [671 Valid, 265 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 01:17:11,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-11-19 01:17:11,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 187. [2024-11-19 01:17:11,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 164 states have (on average 1.420731707317073) internal successors, (233), 165 states have internal predecessors, (233), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-19 01:17:11,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 273 transitions. [2024-11-19 01:17:11,509 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 273 transitions. Word has length 128 [2024-11-19 01:17:11,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:17:11,511 INFO L471 AbstractCegarLoop]: Abstraction has 187 states and 273 transitions. [2024-11-19 01:17:11,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-19 01:17:11,512 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 273 transitions. [2024-11-19 01:17:11,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-19 01:17:11,517 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:17:11,517 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:17:11,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 01:17:11,517 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:17:11,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:17:11,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1406914461, now seen corresponding path program 1 times [2024-11-19 01:17:11,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:17:11,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801069305] [2024-11-19 01:17:11,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:17:11,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:17:11,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:17:19,329 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 01:17:19,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:17:19,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801069305] [2024-11-19 01:17:19,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801069305] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:17:19,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:17:19,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-19 01:17:19,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541794576] [2024-11-19 01:17:19,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:17:19,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-19 01:17:19,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:17:19,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-19 01:17:19,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2024-11-19 01:17:19,336 INFO L87 Difference]: Start difference. First operand 187 states and 273 transitions. Second operand has 19 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 19 states have internal predecessors, (51), 5 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) [2024-11-19 01:17:23,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:17:23,285 INFO L93 Difference]: Finished difference Result 467 states and 680 transitions. [2024-11-19 01:17:23,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-19 01:17:23,287 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 19 states have internal predecessors, (51), 5 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) Word has length 128 [2024-11-19 01:17:23,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:17:23,292 INFO L225 Difference]: With dead ends: 467 [2024-11-19 01:17:23,293 INFO L226 Difference]: Without dead ends: 283 [2024-11-19 01:17:23,294 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=180, Invalid=812, Unknown=0, NotChecked=0, Total=992 [2024-11-19 01:17:23,296 INFO L432 NwaCegarLoop]: 133 mSDtfsCounter, 415 mSDsluCounter, 1178 mSDsCounter, 0 mSdLazyCounter, 1949 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 1311 SdHoareTripleChecker+Invalid, 1958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-19 01:17:23,296 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 1311 Invalid, 1958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1949 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-19 01:17:23,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2024-11-19 01:17:23,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 195. [2024-11-19 01:17:23,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 172 states have (on average 1.4127906976744187) internal successors, (243), 173 states have internal predecessors, (243), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-19 01:17:23,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 283 transitions. [2024-11-19 01:17:23,324 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 283 transitions. Word has length 128 [2024-11-19 01:17:23,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:17:23,325 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 283 transitions. [2024-11-19 01:17:23,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 19 states have internal predecessors, (51), 5 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) [2024-11-19 01:17:23,326 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 283 transitions. [2024-11-19 01:17:23,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-19 01:17:23,327 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:17:23,327 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:17:23,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 01:17:23,328 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:17:23,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:17:23,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1979763303, now seen corresponding path program 1 times [2024-11-19 01:17:23,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:17:23,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695573367] [2024-11-19 01:17:23,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:17:23,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:17:23,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:17:28,776 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 01:17:28,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:17:28,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695573367] [2024-11-19 01:17:28,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695573367] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:17:28,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:17:28,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-19 01:17:28,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14468778] [2024-11-19 01:17:28,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:17:28,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-19 01:17:28,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:17:28,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-19 01:17:28,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2024-11-19 01:17:28,780 INFO L87 Difference]: Start difference. First operand 195 states and 283 transitions. Second operand has 15 states, 14 states have (on average 3.642857142857143) internal successors, (51), 15 states have internal predecessors, (51), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-19 01:17:30,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:17:30,369 INFO L93 Difference]: Finished difference Result 391 states and 567 transitions. [2024-11-19 01:17:30,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 01:17:30,370 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.642857142857143) internal successors, (51), 15 states have internal predecessors, (51), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 128 [2024-11-19 01:17:30,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:17:30,372 INFO L225 Difference]: With dead ends: 391 [2024-11-19 01:17:30,372 INFO L226 Difference]: Without dead ends: 199 [2024-11-19 01:17:30,373 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2024-11-19 01:17:30,374 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 249 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 1126 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 1133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-19 01:17:30,374 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 748 Invalid, 1133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1126 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-19 01:17:30,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2024-11-19 01:17:30,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 197. [2024-11-19 01:17:30,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 174 states have (on average 1.4080459770114941) internal successors, (245), 175 states have internal predecessors, (245), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-19 01:17:30,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 285 transitions. [2024-11-19 01:17:30,401 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 285 transitions. Word has length 128 [2024-11-19 01:17:30,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:17:30,402 INFO L471 AbstractCegarLoop]: Abstraction has 197 states and 285 transitions. [2024-11-19 01:17:30,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.642857142857143) internal successors, (51), 15 states have internal predecessors, (51), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-19 01:17:30,402 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 285 transitions. [2024-11-19 01:17:30,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-19 01:17:30,405 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:17:30,405 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:17:30,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 01:17:30,406 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:17:30,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:17:30,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1299704933, now seen corresponding path program 1 times [2024-11-19 01:17:30,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:17:30,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183343754] [2024-11-19 01:17:30,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:17:30,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:17:30,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:17:32,443 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 01:17:32,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:17:32,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183343754] [2024-11-19 01:17:32,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183343754] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:17:32,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:17:32,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-19 01:17:32,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657310897] [2024-11-19 01:17:32,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:17:32,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 01:17:32,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:17:32,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 01:17:32,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-19 01:17:32,445 INFO L87 Difference]: Start difference. First operand 197 states and 285 transitions. Second operand has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-19 01:17:33,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:17:33,145 INFO L93 Difference]: Finished difference Result 396 states and 569 transitions. [2024-11-19 01:17:33,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 01:17:33,146 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 128 [2024-11-19 01:17:33,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:17:33,148 INFO L225 Difference]: With dead ends: 396 [2024-11-19 01:17:33,148 INFO L226 Difference]: Without dead ends: 202 [2024-11-19 01:17:33,149 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2024-11-19 01:17:33,150 INFO L432 NwaCegarLoop]: 149 mSDtfsCounter, 318 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 01:17:33,152 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 511 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 01:17:33,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2024-11-19 01:17:33,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 154. [2024-11-19 01:17:33,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 135 states have (on average 1.4) internal successors, (189), 135 states have internal predecessors, (189), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-19 01:17:33,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 221 transitions. [2024-11-19 01:17:33,176 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 221 transitions. Word has length 128 [2024-11-19 01:17:33,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:17:33,177 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 221 transitions. [2024-11-19 01:17:33,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-19 01:17:33,178 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 221 transitions. [2024-11-19 01:17:33,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-19 01:17:33,179 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:17:33,179 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:17:33,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 01:17:33,180 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:17:33,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:17:33,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1356234675, now seen corresponding path program 1 times [2024-11-19 01:17:33,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:17:33,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983016546] [2024-11-19 01:17:33,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:17:33,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:17:33,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:17:38,633 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-11-19 01:17:38,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:17:38,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983016546] [2024-11-19 01:17:38,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983016546] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:17:38,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755761099] [2024-11-19 01:17:38,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:17:38,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:17:38,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:17:38,635 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:17:38,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 01:17:38,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:17:38,900 INFO L255 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 82 conjuncts are in the unsatisfiable core [2024-11-19 01:17:38,928 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:17:39,229 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 01:17:40,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-19 01:17:40,622 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-19 01:17:41,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-19 01:17:41,489 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-19 01:17:41,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-19 01:17:42,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-19 01:17:42,430 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-19 01:17:43,023 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-19 01:17:43,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 01:17:43,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 01:17:43,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 01:17:43,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 90 [2024-11-19 01:17:43,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 01:17:43,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 01:17:43,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 01:17:43,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 01:17:43,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 01:17:43,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 01:17:43,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 01:17:43,843 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 149 treesize of output 94 [2024-11-19 01:17:44,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 01:17:44,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 01:17:44,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 01:17:44,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 01:17:44,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 01:17:44,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 01:17:44,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 01:17:44,100 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 70 [2024-11-19 01:17:44,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 01:17:44,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 01:17:44,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 01:17:44,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 01:17:44,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 01:17:44,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 01:17:44,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 01:17:44,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 50 [2024-11-19 01:17:44,535 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 13 proven. 151 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2024-11-19 01:17:44,536 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:17:48,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755761099] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:17:48,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 01:17:48,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15] total 33 [2024-11-19 01:17:48,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862875602] [2024-11-19 01:17:48,509 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 01:17:48,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-19 01:17:48,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:17:48,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-19 01:17:48,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=1400, Unknown=0, NotChecked=0, Total=1560 [2024-11-19 01:17:48,513 INFO L87 Difference]: Start difference. First operand 154 states and 221 transitions. Second operand has 33 states, 31 states have (on average 3.4193548387096775) internal successors, (106), 33 states have internal predecessors, (106), 6 states have call successors, (32), 4 states have call predecessors, (32), 5 states have return successors, (32), 4 states have call predecessors, (32), 6 states have call successors, (32) [2024-11-19 01:17:54,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:17:54,462 INFO L93 Difference]: Finished difference Result 404 states and 576 transitions. [2024-11-19 01:17:54,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-19 01:17:54,463 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 31 states have (on average 3.4193548387096775) internal successors, (106), 33 states have internal predecessors, (106), 6 states have call successors, (32), 4 states have call predecessors, (32), 5 states have return successors, (32), 4 states have call predecessors, (32), 6 states have call successors, (32) Word has length 129 [2024-11-19 01:17:54,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:17:54,465 INFO L225 Difference]: With dead ends: 404 [2024-11-19 01:17:54,465 INFO L226 Difference]: Without dead ends: 253 [2024-11-19 01:17:54,467 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 725 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=498, Invalid=3042, Unknown=0, NotChecked=0, Total=3540 [2024-11-19 01:17:54,468 INFO L432 NwaCegarLoop]: 98 mSDtfsCounter, 922 mSDsluCounter, 1624 mSDsCounter, 0 mSdLazyCounter, 3020 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 925 SdHoareTripleChecker+Valid, 1722 SdHoareTripleChecker+Invalid, 3075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 3020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-19 01:17:54,471 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [925 Valid, 1722 Invalid, 3075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 3020 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-19 01:17:54,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2024-11-19 01:17:54,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 171. [2024-11-19 01:17:54,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 151 states have (on average 1.4105960264900663) internal successors, (213), 151 states have internal predecessors, (213), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-19 01:17:54,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 245 transitions. [2024-11-19 01:17:54,522 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 245 transitions. Word has length 129 [2024-11-19 01:17:54,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:17:54,523 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 245 transitions. [2024-11-19 01:17:54,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 31 states have (on average 3.4193548387096775) internal successors, (106), 33 states have internal predecessors, (106), 6 states have call successors, (32), 4 states have call predecessors, (32), 5 states have return successors, (32), 4 states have call predecessors, (32), 6 states have call successors, (32) [2024-11-19 01:17:54,523 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 245 transitions. [2024-11-19 01:17:54,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-19 01:17:54,525 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:17:54,525 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:17:54,545 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 01:17:54,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-19 01:17:54,726 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:17:54,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:17:54,727 INFO L85 PathProgramCache]: Analyzing trace with hash 150390094, now seen corresponding path program 1 times [2024-11-19 01:17:54,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:17:54,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639897121] [2024-11-19 01:17:54,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:17:54,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:17:54,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:17:55,362 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 01:17:55,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:17:55,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639897121] [2024-11-19 01:17:55,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639897121] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:17:55,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:17:55,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 01:17:55,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524772980] [2024-11-19 01:17:55,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:17:55,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 01:17:55,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:17:55,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 01:17:55,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-19 01:17:55,364 INFO L87 Difference]: Start difference. First operand 171 states and 245 transitions. Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-19 01:17:55,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:17:55,761 INFO L93 Difference]: Finished difference Result 397 states and 570 transitions. [2024-11-19 01:17:55,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 01:17:55,761 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 130 [2024-11-19 01:17:55,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:17:55,763 INFO L225 Difference]: With dead ends: 397 [2024-11-19 01:17:55,763 INFO L226 Difference]: Without dead ends: 229 [2024-11-19 01:17:55,764 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-11-19 01:17:55,764 INFO L432 NwaCegarLoop]: 100 mSDtfsCounter, 346 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 01:17:55,765 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 441 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 01:17:55,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2024-11-19 01:17:55,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 196. [2024-11-19 01:17:55,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 176 states have (on average 1.4147727272727273) internal successors, (249), 176 states have internal predecessors, (249), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-19 01:17:55,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 281 transitions. [2024-11-19 01:17:55,788 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 281 transitions. Word has length 130 [2024-11-19 01:17:55,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:17:55,789 INFO L471 AbstractCegarLoop]: Abstraction has 196 states and 281 transitions. [2024-11-19 01:17:55,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-19 01:17:55,789 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 281 transitions. [2024-11-19 01:17:55,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-19 01:17:55,790 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:17:55,791 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:17:55,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 01:17:55,791 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:17:55,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:17:55,792 INFO L85 PathProgramCache]: Analyzing trace with hash 524064501, now seen corresponding path program 1 times [2024-11-19 01:17:55,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:17:55,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916999331] [2024-11-19 01:17:55,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:17:55,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:17:55,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:18:02,221 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 01:18:02,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:18:02,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916999331] [2024-11-19 01:18:02,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916999331] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:18:02,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:18:02,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-19 01:18:02,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58327160] [2024-11-19 01:18:02,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:18:02,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-19 01:18:02,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:18:02,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-19 01:18:02,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2024-11-19 01:18:02,223 INFO L87 Difference]: Start difference. First operand 196 states and 281 transitions. Second operand has 18 states, 17 states have (on average 3.176470588235294) internal successors, (54), 18 states have internal predecessors, (54), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-19 01:18:07,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:18:07,240 INFO L93 Difference]: Finished difference Result 492 states and 710 transitions. [2024-11-19 01:18:07,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-19 01:18:07,240 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.176470588235294) internal successors, (54), 18 states have internal predecessors, (54), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 131 [2024-11-19 01:18:07,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:18:07,243 INFO L225 Difference]: With dead ends: 492 [2024-11-19 01:18:07,243 INFO L226 Difference]: Without dead ends: 299 [2024-11-19 01:18:07,244 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=154, Invalid=716, Unknown=0, NotChecked=0, Total=870 [2024-11-19 01:18:07,246 INFO L432 NwaCegarLoop]: 142 mSDtfsCounter, 687 mSDsluCounter, 1134 mSDsCounter, 0 mSdLazyCounter, 2041 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 1276 SdHoareTripleChecker+Invalid, 2088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 2041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-19 01:18:07,247 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [688 Valid, 1276 Invalid, 2088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 2041 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-19 01:18:07,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2024-11-19 01:18:07,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 214. [2024-11-19 01:18:07,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 194 states have (on average 1.4278350515463918) internal successors, (277), 194 states have internal predecessors, (277), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-19 01:18:07,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 309 transitions. [2024-11-19 01:18:07,272 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 309 transitions. Word has length 131 [2024-11-19 01:18:07,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:18:07,272 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 309 transitions. [2024-11-19 01:18:07,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.176470588235294) internal successors, (54), 18 states have internal predecessors, (54), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-19 01:18:07,273 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 309 transitions. [2024-11-19 01:18:07,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-19 01:18:07,274 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:18:07,274 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:18:07,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 01:18:07,275 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:18:07,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:18:07,275 INFO L85 PathProgramCache]: Analyzing trace with hash -755799177, now seen corresponding path program 1 times [2024-11-19 01:18:07,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:18:07,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615767087] [2024-11-19 01:18:07,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:18:07,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:18:07,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat