./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-multidimensional/min-2-u.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-multidimensional/min-2-u.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 68785685c781649dca8a870a36ccbd5837fb99f65c0418361b1a73f7848e1bda --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 14:53:19,595 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 14:53:19,685 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 14:53:19,691 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 14:53:19,691 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 14:53:19,717 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 14:53:19,717 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 14:53:19,718 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 14:53:19,718 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 14:53:19,719 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 14:53:19,719 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 14:53:19,719 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 14:53:19,720 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 14:53:19,720 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 14:53:19,721 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 14:53:19,721 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 14:53:19,722 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 14:53:19,722 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 14:53:19,722 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 14:53:19,723 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 14:53:19,723 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 14:53:19,725 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 14:53:19,725 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 14:53:19,726 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 14:53:19,726 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 14:53:19,726 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 14:53:19,727 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 14:53:19,727 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 14:53:19,727 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 14:53:19,728 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 14:53:19,728 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 14:53:19,728 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 14:53:19,728 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 14:53:19,729 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 14:53:19,729 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 14:53:19,729 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 14:53:19,730 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 14:53:19,730 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 14:53:19,730 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 14:53:19,731 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 14:53:19,731 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 14:53:19,734 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 14:53:19,734 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68785685c781649dca8a870a36ccbd5837fb99f65c0418361b1a73f7848e1bda [2024-10-12 14:53:19,990 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 14:53:20,015 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 14:53:20,018 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 14:53:20,019 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 14:53:20,020 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 14:53:20,021 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-multidimensional/min-2-u.c [2024-10-12 14:53:21,519 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 14:53:21,702 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 14:53:21,702 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-multidimensional/min-2-u.c [2024-10-12 14:53:21,709 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87d47be7f/e34f0a99baf5434b9cd3aeb700d71621/FLAG4ba1dc5ba [2024-10-12 14:53:21,721 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87d47be7f/e34f0a99baf5434b9cd3aeb700d71621 [2024-10-12 14:53:21,724 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 14:53:21,725 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 14:53:21,726 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 14:53:21,726 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 14:53:21,732 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 14:53:21,732 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 02:53:21" (1/1) ... [2024-10-12 14:53:21,733 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7269b815 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:53:21, skipping insertion in model container [2024-10-12 14:53:21,733 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 02:53:21" (1/1) ... [2024-10-12 14:53:21,752 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 14:53:21,918 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-multidimensional/min-2-u.c[319,332] [2024-10-12 14:53:21,936 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 14:53:21,947 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 14:53:21,958 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-multidimensional/min-2-u.c[319,332] [2024-10-12 14:53:21,969 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 14:53:21,985 INFO L204 MainTranslator]: Completed translation [2024-10-12 14:53:21,986 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:53:21 WrapperNode [2024-10-12 14:53:21,986 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 14:53:21,987 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 14:53:21,987 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 14:53:21,987 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 14:53:21,995 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:53:21" (1/1) ... [2024-10-12 14:53:22,004 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:53:21" (1/1) ... [2024-10-12 14:53:22,027 INFO L138 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 83 [2024-10-12 14:53:22,027 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 14:53:22,028 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 14:53:22,028 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 14:53:22,028 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 14:53:22,039 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:53:21" (1/1) ... [2024-10-12 14:53:22,040 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:53:21" (1/1) ... [2024-10-12 14:53:22,041 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:53:21" (1/1) ... [2024-10-12 14:53:22,054 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-10-12 14:53:22,054 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:53:21" (1/1) ... [2024-10-12 14:53:22,055 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:53:21" (1/1) ... [2024-10-12 14:53:22,059 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:53:21" (1/1) ... [2024-10-12 14:53:22,062 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:53:21" (1/1) ... [2024-10-12 14:53:22,064 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:53:21" (1/1) ... [2024-10-12 14:53:22,065 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:53:21" (1/1) ... [2024-10-12 14:53:22,068 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 14:53:22,069 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 14:53:22,069 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 14:53:22,069 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 14:53:22,070 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:53:21" (1/1) ... [2024-10-12 14:53:22,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 14:53:22,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 14:53:22,104 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-12 14:53:22,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-12 14:53:22,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 14:53:22,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 14:53:22,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-12 14:53:22,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-12 14:53:22,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-12 14:53:22,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-12 14:53:22,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 14:53:22,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 14:53:22,146 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-12 14:53:22,147 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-12 14:53:22,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-12 14:53:22,211 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 14:53:22,212 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 14:53:22,362 INFO L? ?]: Removed 17 outVars from TransFormulas that were not future-live. [2024-10-12 14:53:22,362 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 14:53:22,396 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 14:53:22,396 INFO L314 CfgBuilder]: Removed 6 assume(true) statements. [2024-10-12 14:53:22,397 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 02:53:22 BoogieIcfgContainer [2024-10-12 14:53:22,397 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 14:53:22,399 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 14:53:22,399 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 14:53:22,402 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 14:53:22,402 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 02:53:21" (1/3) ... [2024-10-12 14:53:22,403 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f20b9b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 02:53:22, skipping insertion in model container [2024-10-12 14:53:22,403 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:53:21" (2/3) ... [2024-10-12 14:53:22,403 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f20b9b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 02:53:22, skipping insertion in model container [2024-10-12 14:53:22,403 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 02:53:22" (3/3) ... [2024-10-12 14:53:22,404 INFO L112 eAbstractionObserver]: Analyzing ICFG min-2-u.c [2024-10-12 14:53:22,419 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 14:53:22,420 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-12 14:53:22,467 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 14:53:22,474 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;@2c3b1b86, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 14:53:22,474 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-12 14:53:22,478 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 19 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:53:22,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-12 14:53:22,483 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 14:53:22,483 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 14:53:22,484 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 14:53:22,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 14:53:22,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1260479934, now seen corresponding path program 1 times [2024-10-12 14:53:22,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 14:53:22,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346332390] [2024-10-12 14:53:22,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 14:53:22,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 14:53:22,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:53:22,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 14:53:22,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 14:53:22,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346332390] [2024-10-12 14:53:22,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346332390] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 14:53:22,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 14:53:22,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 14:53:22,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523881655] [2024-10-12 14:53:22,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 14:53:22,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 14:53:22,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 14:53:22,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 14:53:22,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 14:53:22,843 INFO L87 Difference]: Start difference. First operand has 20 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 19 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:53:22,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 14:53:22,906 INFO L93 Difference]: Finished difference Result 42 states and 72 transitions. [2024-10-12 14:53:22,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 14:53:22,909 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-10-12 14:53:22,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 14:53:22,915 INFO L225 Difference]: With dead ends: 42 [2024-10-12 14:53:22,915 INFO L226 Difference]: Without dead ends: 21 [2024-10-12 14:53:22,917 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 14:53:22,922 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 3 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 14:53:22,923 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 30 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 14:53:22,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-10-12 14:53:22,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2024-10-12 14:53:22,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 18 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:53:22,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2024-10-12 14:53:22,974 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 25 transitions. Word has length 9 [2024-10-12 14:53:22,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 14:53:22,974 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 25 transitions. [2024-10-12 14:53:22,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:53:22,975 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 25 transitions. [2024-10-12 14:53:22,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-10-12 14:53:22,982 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 14:53:22,982 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 14:53:22,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 14:53:22,982 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 14:53:22,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 14:53:22,983 INFO L85 PathProgramCache]: Analyzing trace with hash 800318851, now seen corresponding path program 1 times [2024-10-12 14:53:22,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 14:53:22,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945981535] [2024-10-12 14:53:22,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 14:53:22,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 14:53:23,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:53:23,154 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 14:53:23,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 14:53:23,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945981535] [2024-10-12 14:53:23,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945981535] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 14:53:23,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 14:53:23,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 14:53:23,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636593291] [2024-10-12 14:53:23,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 14:53:23,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 14:53:23,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 14:53:23,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 14:53:23,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 14:53:23,159 INFO L87 Difference]: Start difference. First operand 19 states and 25 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:53:23,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 14:53:23,222 INFO L93 Difference]: Finished difference Result 45 states and 61 transitions. [2024-10-12 14:53:23,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 14:53:23,222 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-10-12 14:53:23,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 14:53:23,223 INFO L225 Difference]: With dead ends: 45 [2024-10-12 14:53:23,223 INFO L226 Difference]: Without dead ends: 28 [2024-10-12 14:53:23,223 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 14:53:23,225 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 30 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 14:53:23,226 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 21 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 14:53:23,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-10-12 14:53:23,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 22. [2024-10-12 14:53:23,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 21 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:53:23,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 28 transitions. [2024-10-12 14:53:23,237 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 28 transitions. Word has length 12 [2024-10-12 14:53:23,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 14:53:23,237 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 28 transitions. [2024-10-12 14:53:23,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:53:23,239 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 28 transitions. [2024-10-12 14:53:23,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-10-12 14:53:23,239 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 14:53:23,239 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 14:53:23,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 14:53:23,240 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 14:53:23,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 14:53:23,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1845944019, now seen corresponding path program 1 times [2024-10-12 14:53:23,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 14:53:23,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778982722] [2024-10-12 14:53:23,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 14:53:23,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 14:53:23,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:53:23,367 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 14:53:23,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 14:53:23,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778982722] [2024-10-12 14:53:23,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778982722] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 14:53:23,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 14:53:23,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 14:53:23,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739592305] [2024-10-12 14:53:23,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 14:53:23,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 14:53:23,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 14:53:23,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 14:53:23,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 14:53:23,372 INFO L87 Difference]: Start difference. First operand 22 states and 28 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:53:23,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 14:53:23,435 INFO L93 Difference]: Finished difference Result 48 states and 60 transitions. [2024-10-12 14:53:23,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 14:53:23,437 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-10-12 14:53:23,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 14:53:23,438 INFO L225 Difference]: With dead ends: 48 [2024-10-12 14:53:23,439 INFO L226 Difference]: Without dead ends: 39 [2024-10-12 14:53:23,440 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 14:53:23,441 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 34 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 14:53:23,442 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 15 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 14:53:23,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-10-12 14:53:23,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 23. [2024-10-12 14:53:23,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 22 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:53:23,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 29 transitions. [2024-10-12 14:53:23,451 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 29 transitions. Word has length 13 [2024-10-12 14:53:23,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 14:53:23,451 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 29 transitions. [2024-10-12 14:53:23,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:53:23,452 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 29 transitions. [2024-10-12 14:53:23,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-10-12 14:53:23,452 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 14:53:23,452 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 14:53:23,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 14:53:23,453 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 14:53:23,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 14:53:23,453 INFO L85 PathProgramCache]: Analyzing trace with hash -371629433, now seen corresponding path program 1 times [2024-10-12 14:53:23,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 14:53:23,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827509630] [2024-10-12 14:53:23,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 14:53:23,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 14:53:23,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:53:23,581 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 14:53:23,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 14:53:23,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827509630] [2024-10-12 14:53:23,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827509630] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 14:53:23,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674815461] [2024-10-12 14:53:23,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 14:53:23,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 14:53:23,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 14:53:23,585 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 14:53:23,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 14:53:23,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:53:23,662 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-12 14:53:23,666 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 14:53:23,739 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 14:53:23,740 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 14:53:23,774 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 14:53:23,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674815461] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 14:53:23,775 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 14:53:23,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-10-12 14:53:23,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653405755] [2024-10-12 14:53:23,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 14:53:23,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-12 14:53:23,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 14:53:23,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-12 14:53:23,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-10-12 14:53:23,781 INFO L87 Difference]: Start difference. First operand 23 states and 29 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:53:23,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 14:53:23,915 INFO L93 Difference]: Finished difference Result 71 states and 95 transitions. [2024-10-12 14:53:23,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 14:53:23,916 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-10-12 14:53:23,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 14:53:23,916 INFO L225 Difference]: With dead ends: 71 [2024-10-12 14:53:23,917 INFO L226 Difference]: Without dead ends: 50 [2024-10-12 14:53:23,917 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2024-10-12 14:53:23,918 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 71 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 14:53:23,918 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 49 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 14:53:23,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-10-12 14:53:23,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 44. [2024-10-12 14:53:23,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.302325581395349) internal successors, (56), 43 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:53:23,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 56 transitions. [2024-10-12 14:53:23,931 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 56 transitions. Word has length 19 [2024-10-12 14:53:23,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 14:53:23,931 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 56 transitions. [2024-10-12 14:53:23,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:53:23,932 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 56 transitions. [2024-10-12 14:53:23,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-10-12 14:53:23,932 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 14:53:23,932 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 14:53:23,950 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-12 14:53:24,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 14:53:24,134 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 14:53:24,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 14:53:24,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1826388551, now seen corresponding path program 2 times [2024-10-12 14:53:24,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 14:53:24,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316278784] [2024-10-12 14:53:24,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 14:53:24,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 14:53:24,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:53:24,348 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-10-12 14:53:24,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 14:53:24,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316278784] [2024-10-12 14:53:24,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316278784] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 14:53:24,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907577229] [2024-10-12 14:53:24,349 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 14:53:24,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 14:53:24,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 14:53:24,351 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 14:53:24,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 14:53:24,424 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 14:53:24,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 14:53:24,426 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-12 14:53:24,436 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 14:53:24,546 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-10-12 14:53:24,548 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 14:53:24,648 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-10-12 14:53:24,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907577229] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 14:53:24,649 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 14:53:24,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2024-10-12 14:53:24,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013071531] [2024-10-12 14:53:24,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 14:53:24,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-12 14:53:24,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 14:53:24,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-12 14:53:24,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=195, Unknown=0, NotChecked=0, Total=342 [2024-10-12 14:53:24,654 INFO L87 Difference]: Start difference. First operand 44 states and 56 transitions. Second operand has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 18 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:53:24,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 14:53:24,948 INFO L93 Difference]: Finished difference Result 146 states and 191 transitions. [2024-10-12 14:53:24,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-12 14:53:24,950 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 18 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2024-10-12 14:53:24,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 14:53:24,951 INFO L225 Difference]: With dead ends: 146 [2024-10-12 14:53:24,952 INFO L226 Difference]: Without dead ends: 104 [2024-10-12 14:53:24,953 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=222, Invalid=330, Unknown=0, NotChecked=0, Total=552 [2024-10-12 14:53:24,955 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 227 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 14:53:24,956 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 77 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 14:53:24,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-10-12 14:53:24,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 86. [2024-10-12 14:53:24,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.2941176470588236) internal successors, (110), 85 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:53:24,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 110 transitions. [2024-10-12 14:53:24,983 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 110 transitions. Word has length 31 [2024-10-12 14:53:24,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 14:53:24,983 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 110 transitions. [2024-10-12 14:53:24,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 18 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:53:24,984 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 110 transitions. [2024-10-12 14:53:24,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-12 14:53:24,985 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 14:53:24,987 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 14:53:25,004 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-12 14:53:25,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 14:53:25,192 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 14:53:25,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 14:53:25,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1010214521, now seen corresponding path program 3 times [2024-10-12 14:53:25,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 14:53:25,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731633006] [2024-10-12 14:53:25,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 14:53:25,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 14:53:25,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:53:25,529 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 1 proven. 55 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2024-10-12 14:53:25,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 14:53:25,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731633006] [2024-10-12 14:53:25,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731633006] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 14:53:25,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942204386] [2024-10-12 14:53:25,530 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-12 14:53:25,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 14:53:25,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 14:53:25,532 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 14:53:25,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-12 14:53:25,613 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-12 14:53:25,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 14:53:25,614 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-12 14:53:25,616 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 14:53:25,817 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2024-10-12 14:53:25,818 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 14:53:25,926 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2024-10-12 14:53:25,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942204386] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 14:53:25,927 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 14:53:25,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 4, 4] total 18 [2024-10-12 14:53:25,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760746352] [2024-10-12 14:53:25,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 14:53:25,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-12 14:53:25,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 14:53:25,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-12 14:53:25,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2024-10-12 14:53:25,929 INFO L87 Difference]: Start difference. First operand 86 states and 110 transitions. Second operand has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 18 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:53:27,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 14:53:27,380 INFO L93 Difference]: Finished difference Result 559 states and 665 transitions. [2024-10-12 14:53:27,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-10-12 14:53:27,381 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 18 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-10-12 14:53:27,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 14:53:27,388 INFO L225 Difference]: With dead ends: 559 [2024-10-12 14:53:27,388 INFO L226 Difference]: Without dead ends: 475 [2024-10-12 14:53:27,391 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1695 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1772, Invalid=3778, Unknown=0, NotChecked=0, Total=5550 [2024-10-12 14:53:27,395 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 1558 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1558 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-12 14:53:27,397 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1558 Valid, 68 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-12 14:53:27,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2024-10-12 14:53:27,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 201. [2024-10-12 14:53:27,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 200 states have (on average 1.315) internal successors, (263), 200 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:53:27,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 263 transitions. [2024-10-12 14:53:27,427 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 263 transitions. Word has length 55 [2024-10-12 14:53:27,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 14:53:27,427 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 263 transitions. [2024-10-12 14:53:27,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 18 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:53:27,427 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 263 transitions. [2024-10-12 14:53:27,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-10-12 14:53:27,431 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 14:53:27,431 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 11, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 14:53:27,443 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-12 14:53:27,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 14:53:27,632 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 14:53:27,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 14:53:27,632 INFO L85 PathProgramCache]: Analyzing trace with hash 497599061, now seen corresponding path program 4 times [2024-10-12 14:53:27,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 14:53:27,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826071468] [2024-10-12 14:53:27,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 14:53:27,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 14:53:27,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:53:28,279 INFO L134 CoverageAnalysis]: Checked inductivity of 3103 backedges. 1 proven. 66 refuted. 0 times theorem prover too weak. 3036 trivial. 0 not checked. [2024-10-12 14:53:28,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 14:53:28,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826071468] [2024-10-12 14:53:28,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826071468] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 14:53:28,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135867719] [2024-10-12 14:53:28,280 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-12 14:53:28,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 14:53:28,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 14:53:28,281 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 14:53:28,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-12 14:53:28,417 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-12 14:53:28,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 14:53:28,420 INFO L255 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-12 14:53:28,425 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 14:53:29,128 INFO L134 CoverageAnalysis]: Checked inductivity of 3103 backedges. 145 proven. 2363 refuted. 0 times theorem prover too weak. 595 trivial. 0 not checked. [2024-10-12 14:53:29,128 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 14:53:29,659 INFO L134 CoverageAnalysis]: Checked inductivity of 3103 backedges. 145 proven. 2363 refuted. 0 times theorem prover too weak. 595 trivial. 0 not checked. [2024-10-12 14:53:29,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135867719] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 14:53:29,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 14:53:29,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 19, 19] total 49 [2024-10-12 14:53:29,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98890590] [2024-10-12 14:53:29,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 14:53:29,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-10-12 14:53:29,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 14:53:29,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-10-12 14:53:29,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=457, Invalid=1895, Unknown=0, NotChecked=0, Total=2352 [2024-10-12 14:53:29,663 INFO L87 Difference]: Start difference. First operand 201 states and 263 transitions. Second operand has 49 states, 49 states have (on average 3.0) internal successors, (147), 49 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:53:35,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 14:53:35,801 INFO L93 Difference]: Finished difference Result 1572 states and 1864 transitions. [2024-10-12 14:53:35,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2024-10-12 14:53:35,801 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 3.0) internal successors, (147), 49 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 167 [2024-10-12 14:53:35,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 14:53:35,806 INFO L225 Difference]: With dead ends: 1572 [2024-10-12 14:53:35,807 INFO L226 Difference]: Without dead ends: 1373 [2024-10-12 14:53:35,821 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 655 GetRequests, 448 SyntacticMatches, 0 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16287 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=9701, Invalid=33771, Unknown=0, NotChecked=0, Total=43472 [2024-10-12 14:53:35,822 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 7957 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 1010 mSolverCounterSat, 1474 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7957 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 2484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1474 IncrementalHoareTripleChecker+Valid, 1010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-12 14:53:35,823 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7957 Valid, 538 Invalid, 2484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1474 Valid, 1010 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-12 14:53:35,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1373 states. [2024-10-12 14:53:35,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1373 to 490. [2024-10-12 14:53:35,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 489 states have (on average 1.3251533742331287) internal successors, (648), 489 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:53:35,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 648 transitions. [2024-10-12 14:53:35,873 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 648 transitions. Word has length 167 [2024-10-12 14:53:35,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 14:53:35,873 INFO L471 AbstractCegarLoop]: Abstraction has 490 states and 648 transitions. [2024-10-12 14:53:35,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 3.0) internal successors, (147), 49 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:53:35,874 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 648 transitions. [2024-10-12 14:53:35,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2024-10-12 14:53:35,881 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 14:53:35,881 INFO L215 NwaCegarLoop]: trace histogram [132, 132, 132, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 14:53:35,899 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-12 14:53:36,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 14:53:36,086 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 14:53:36,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 14:53:36,086 INFO L85 PathProgramCache]: Analyzing trace with hash 104473209, now seen corresponding path program 5 times [2024-10-12 14:53:36,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 14:53:36,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083240247] [2024-10-12 14:53:36,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 14:53:36,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 14:53:36,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:53:37,261 INFO L134 CoverageAnalysis]: Checked inductivity of 27645 backedges. 1 proven. 78 refuted. 0 times theorem prover too weak. 27566 trivial. 0 not checked. [2024-10-12 14:53:37,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 14:53:37,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083240247] [2024-10-12 14:53:37,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083240247] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 14:53:37,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532630802] [2024-10-12 14:53:37,262 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-12 14:53:37,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 14:53:37,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 14:53:37,263 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 14:53:37,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-12 14:54:22,264 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 117 check-sat command(s) [2024-10-12 14:54:22,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 14:54:22,313 INFO L255 TraceCheckSpWp]: Trace formula consists of 1300 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-12 14:54:22,323 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 14:54:22,655 INFO L134 CoverageAnalysis]: Checked inductivity of 27645 backedges. 11927 proven. 210 refuted. 0 times theorem prover too weak. 15508 trivial. 0 not checked. [2024-10-12 14:54:22,655 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 14:54:22,999 INFO L134 CoverageAnalysis]: Checked inductivity of 27645 backedges. 11013 proven. 1124 refuted. 0 times theorem prover too weak. 15508 trivial. 0 not checked. [2024-10-12 14:54:23,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1532630802] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 14:54:23,000 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 14:54:23,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 42 [2024-10-12 14:54:23,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528264855] [2024-10-12 14:54:23,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 14:54:23,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-10-12 14:54:23,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 14:54:23,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-10-12 14:54:23,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=787, Invalid=1019, Unknown=0, NotChecked=0, Total=1806 [2024-10-12 14:54:23,003 INFO L87 Difference]: Start difference. First operand 490 states and 648 transitions. Second operand has 43 states, 43 states have (on average 3.046511627906977) internal successors, (131), 42 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:54:23,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 14:54:23,542 INFO L93 Difference]: Finished difference Result 1546 states and 2187 transitions. [2024-10-12 14:54:23,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-10-12 14:54:23,542 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 3.046511627906977) internal successors, (131), 42 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 453 [2024-10-12 14:54:23,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 14:54:23,546 INFO L225 Difference]: With dead ends: 1546 [2024-10-12 14:54:23,546 INFO L226 Difference]: Without dead ends: 1058 [2024-10-12 14:54:23,548 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 932 GetRequests, 878 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1037 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1190, Invalid=1890, Unknown=0, NotChecked=0, Total=3080 [2024-10-12 14:54:23,549 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 556 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 14:54:23,549 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [556 Valid, 177 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 14:54:23,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1058 states. [2024-10-12 14:54:23,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1058 to 1008. [2024-10-12 14:54:23,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1008 states, 1007 states have (on average 1.3247269116186693) internal successors, (1334), 1007 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:54:23,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 1334 transitions. [2024-10-12 14:54:23,618 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 1334 transitions. Word has length 453 [2024-10-12 14:54:23,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 14:54:23,619 INFO L471 AbstractCegarLoop]: Abstraction has 1008 states and 1334 transitions. [2024-10-12 14:54:23,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 3.046511627906977) internal successors, (131), 42 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:54:23,619 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 1334 transitions. [2024-10-12 14:54:23,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 930 [2024-10-12 14:54:23,645 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 14:54:23,645 INFO L215 NwaCegarLoop]: trace histogram [286, 286, 286, 26, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 14:54:23,737 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-12 14:54:23,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 14:54:23,846 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 14:54:23,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 14:54:23,846 INFO L85 PathProgramCache]: Analyzing trace with hash 336102073, now seen corresponding path program 6 times [2024-10-12 14:54:23,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 14:54:23,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384876069] [2024-10-12 14:54:23,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 14:54:23,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 14:54:24,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:54:27,172 INFO L134 CoverageAnalysis]: Checked inductivity of 125939 backedges. 1 proven. 351 refuted. 0 times theorem prover too weak. 125587 trivial. 0 not checked. [2024-10-12 14:54:27,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 14:54:27,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384876069] [2024-10-12 14:54:27,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384876069] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 14:54:27,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10196738] [2024-10-12 14:54:27,173 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-12 14:54:27,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 14:54:27,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 14:54:27,175 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 14:54:27,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-12 14:54:27,389 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-10-12 14:54:27,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 14:54:27,391 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-12 14:54:27,402 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 14:54:27,524 INFO L134 CoverageAnalysis]: Checked inductivity of 125939 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 125938 trivial. 0 not checked. [2024-10-12 14:54:27,524 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 14:54:27,628 INFO L134 CoverageAnalysis]: Checked inductivity of 125939 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 125938 trivial. 0 not checked. [2024-10-12 14:54:27,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10196738] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 14:54:27,628 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 14:54:27,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 3, 3] total 33 [2024-10-12 14:54:27,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551227362] [2024-10-12 14:54:27,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 14:54:27,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-10-12 14:54:27,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 14:54:27,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-10-12 14:54:27,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=423, Invalid=699, Unknown=0, NotChecked=0, Total=1122 [2024-10-12 14:54:27,633 INFO L87 Difference]: Start difference. First operand 1008 states and 1334 transitions. Second operand has 34 states, 34 states have (on average 1.6470588235294117) internal successors, (56), 33 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:54:31,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 14:54:31,725 INFO L93 Difference]: Finished difference Result 2219 states and 2890 transitions. [2024-10-12 14:54:31,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2024-10-12 14:54:31,726 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.6470588235294117) internal successors, (56), 33 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 929 [2024-10-12 14:54:31,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 14:54:31,730 INFO L225 Difference]: With dead ends: 2219 [2024-10-12 14:54:31,730 INFO L226 Difference]: Without dead ends: 1213 [2024-10-12 14:54:31,735 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2023 GetRequests, 1853 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9771 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=8787, Invalid=20625, Unknown=0, NotChecked=0, Total=29412 [2024-10-12 14:54:31,735 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 1093 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1093 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 14:54:31,736 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1093 Valid, 150 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 14:54:31,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1213 states. [2024-10-12 14:54:31,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1213 to 1135. [2024-10-12 14:54:31,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1135 states, 1134 states have (on average 1.3015873015873016) internal successors, (1476), 1134 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:54:31,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 1476 transitions. [2024-10-12 14:54:31,829 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 1476 transitions. Word has length 929 [2024-10-12 14:54:31,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 14:54:31,830 INFO L471 AbstractCegarLoop]: Abstraction has 1135 states and 1476 transitions. [2024-10-12 14:54:31,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.6470588235294117) internal successors, (56), 33 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:54:31,830 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 1476 transitions. [2024-10-12 14:54:31,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1054 [2024-10-12 14:54:31,838 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 14:54:31,838 INFO L215 NwaCegarLoop]: trace histogram [297, 297, 297, 108, 11, 11, 11, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 14:54:31,855 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-12 14:54:32,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 14:54:32,040 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 14:54:32,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 14:54:32,040 INFO L85 PathProgramCache]: Analyzing trace with hash -780533672, now seen corresponding path program 7 times [2024-10-12 14:54:32,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 14:54:32,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884462900] [2024-10-12 14:54:32,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 14:54:32,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 14:54:32,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:54:35,297 INFO L134 CoverageAnalysis]: Checked inductivity of 141543 backedges. 2356 proven. 378 refuted. 0 times theorem prover too weak. 138809 trivial. 0 not checked. [2024-10-12 14:54:35,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 14:54:35,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884462900] [2024-10-12 14:54:35,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884462900] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 14:54:35,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334138788] [2024-10-12 14:54:35,298 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-12 14:54:35,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 14:54:35,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 14:54:35,300 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 14:54:35,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-12 14:54:35,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:54:35,993 INFO L255 TraceCheckSpWp]: Trace formula consists of 3502 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-12 14:54:36,006 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 14:54:36,474 INFO L134 CoverageAnalysis]: Checked inductivity of 141543 backedges. 2356 proven. 378 refuted. 0 times theorem prover too weak. 138809 trivial. 0 not checked. [2024-10-12 14:54:36,474 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 14:54:37,424 INFO L134 CoverageAnalysis]: Checked inductivity of 141543 backedges. 2356 proven. 378 refuted. 0 times theorem prover too weak. 138809 trivial. 0 not checked. [2024-10-12 14:54:37,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334138788] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 14:54:37,425 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 14:54:37,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 87 [2024-10-12 14:54:37,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049064951] [2024-10-12 14:54:37,426 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 14:54:37,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2024-10-12 14:54:37,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 14:54:37,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2024-10-12 14:54:37,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3367, Invalid=4289, Unknown=0, NotChecked=0, Total=7656 [2024-10-12 14:54:37,430 INFO L87 Difference]: Start difference. First operand 1135 states and 1476 transitions. Second operand has 88 states, 88 states have (on average 1.2159090909090908) internal successors, (107), 87 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:54:39,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 14:54:39,240 INFO L93 Difference]: Finished difference Result 3510 states and 4948 transitions. [2024-10-12 14:54:39,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-10-12 14:54:39,240 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 1.2159090909090908) internal successors, (107), 87 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1053 [2024-10-12 14:54:39,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 14:54:39,248 INFO L225 Difference]: With dead ends: 3510 [2024-10-12 14:54:39,248 INFO L226 Difference]: Without dead ends: 2405 [2024-10-12 14:54:39,250 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2162 GetRequests, 2048 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4757 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=5075, Invalid=8265, Unknown=0, NotChecked=0, Total=13340 [2024-10-12 14:54:39,251 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 1856 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 499 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1856 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 499 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 14:54:39,252 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1856 Valid, 307 Invalid, 943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [499 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 14:54:39,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2405 states. [2024-10-12 14:54:39,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2405 to 2295. [2024-10-12 14:54:39,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2295 states, 2294 states have (on average 1.3007846556233653) internal successors, (2984), 2294 states have internal predecessors, (2984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:54:39,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2295 states to 2295 states and 2984 transitions. [2024-10-12 14:54:39,415 INFO L78 Accepts]: Start accepts. Automaton has 2295 states and 2984 transitions. Word has length 1053 [2024-10-12 14:54:39,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 14:54:39,416 INFO L471 AbstractCegarLoop]: Abstraction has 2295 states and 2984 transitions. [2024-10-12 14:54:39,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 1.2159090909090908) internal successors, (107), 87 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:54:39,416 INFO L276 IsEmpty]: Start isEmpty. Operand 2295 states and 2984 transitions. [2024-10-12 14:54:39,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2127 [2024-10-12 14:54:39,468 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 14:54:39,469 INFO L215 NwaCegarLoop]: trace histogram [616, 616, 616, 224, 11, 11, 11, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 14:54:39,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-12 14:54:39,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 14:54:39,670 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 14:54:39,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 14:54:39,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1623364190, now seen corresponding path program 8 times [2024-10-12 14:54:39,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 14:54:39,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795442936] [2024-10-12 14:54:39,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 14:54:39,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 14:54:40,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:54:50,778 INFO L134 CoverageAnalysis]: Checked inductivity of 601106 backedges. 9751 proven. 1596 refuted. 0 times theorem prover too weak. 589759 trivial. 0 not checked. [2024-10-12 14:54:50,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 14:54:50,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795442936] [2024-10-12 14:54:50,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795442936] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 14:54:50,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542830678] [2024-10-12 14:54:50,779 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 14:54:50,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 14:54:50,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 14:54:50,780 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 14:54:50,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process