./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/sum40-2.i --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/reducercommutativity/sum40-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d615723bd3f4193c30af142b587a80ce924c7083a75b532c90d98415d1700958 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 14:41:01,107 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 14:41:01,146 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 14:41:01,149 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 14:41:01,149 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 14:41:01,163 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 14:41:01,163 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 14:41:01,163 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 14:41:01,164 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 14:41:01,164 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 14:41:01,164 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 14:41:01,164 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 14:41:01,165 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 14:41:01,165 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 14:41:01,165 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 14:41:01,166 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 14:41:01,166 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 14:41:01,166 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 14:41:01,166 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 14:41:01,167 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 14:41:01,167 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 14:41:01,167 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 14:41:01,167 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 14:41:01,168 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 14:41:01,168 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 14:41:01,168 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 14:41:01,168 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 14:41:01,169 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 14:41:01,169 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 14:41:01,169 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 14:41:01,169 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 14:41:01,169 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 14:41:01,170 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 14:41:01,170 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 14:41:01,170 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 14:41:01,170 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 14:41:01,170 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 14:41:01,170 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 14:41:01,171 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 14:41:01,171 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 14:41:01,171 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 14:41:01,171 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 14:41:01,171 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d615723bd3f4193c30af142b587a80ce924c7083a75b532c90d98415d1700958 [2024-10-12 14:41:01,400 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 14:41:01,420 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 14:41:01,423 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 14:41:01,425 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 14:41:01,425 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 14:41:01,426 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/sum40-2.i [2024-10-12 14:41:02,614 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 14:41:02,756 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 14:41:02,756 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/sum40-2.i [2024-10-12 14:41:02,762 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec8f0c52f/2644551c789f4dd5bdfbff5fe1863ac4/FLAG923ba9bbe [2024-10-12 14:41:02,777 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec8f0c52f/2644551c789f4dd5bdfbff5fe1863ac4 [2024-10-12 14:41:02,779 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 14:41:02,780 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 14:41:02,781 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 14:41:02,781 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 14:41:02,787 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 14:41:02,787 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 02:41:02" (1/1) ... [2024-10-12 14:41:02,790 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b4e6716 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:41:02, skipping insertion in model container [2024-10-12 14:41:02,790 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 02:41:02" (1/1) ... [2024-10-12 14:41:02,806 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 14:41:02,953 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/reducercommutativity/sum40-2.i[1277,1290] [2024-10-12 14:41:02,956 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 14:41:02,965 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 14:41:02,978 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/reducercommutativity/sum40-2.i[1277,1290] [2024-10-12 14:41:02,978 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 14:41:02,991 INFO L204 MainTranslator]: Completed translation [2024-10-12 14:41:02,991 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:41:02 WrapperNode [2024-10-12 14:41:02,991 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 14:41:02,992 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 14:41:02,992 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 14:41:02,992 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 14:41:02,997 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:41:02" (1/1) ... [2024-10-12 14:41:03,003 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:41:02" (1/1) ... [2024-10-12 14:41:03,015 INFO L138 Inliner]: procedures = 16, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 69 [2024-10-12 14:41:03,015 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 14:41:03,016 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 14:41:03,018 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 14:41:03,018 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 14:41:03,025 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:41:02" (1/1) ... [2024-10-12 14:41:03,026 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:41:02" (1/1) ... [2024-10-12 14:41:03,027 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:41:02" (1/1) ... [2024-10-12 14:41:03,036 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 5 writes are split as follows [0, 5]. [2024-10-12 14:41:03,036 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:41:02" (1/1) ... [2024-10-12 14:41:03,036 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:41:02" (1/1) ... [2024-10-12 14:41:03,040 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:41:02" (1/1) ... [2024-10-12 14:41:03,042 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:41:02" (1/1) ... [2024-10-12 14:41:03,043 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:41:02" (1/1) ... [2024-10-12 14:41:03,043 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:41:02" (1/1) ... [2024-10-12 14:41:03,046 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 14:41:03,046 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 14:41:03,047 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 14:41:03,047 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 14:41:03,047 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:41:02" (1/1) ... [2024-10-12 14:41:03,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 14:41:03,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 14:41:03,071 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 14:41:03,073 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 14:41:03,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 14:41:03,111 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2024-10-12 14:41:03,111 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2024-10-12 14:41:03,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 14:41:03,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-12 14:41:03,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-12 14:41:03,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-12 14:41:03,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-12 14:41:03,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 14:41:03,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 14:41:03,113 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-12 14:41:03,113 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-12 14:41:03,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-12 14:41:03,174 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 14:41:03,176 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 14:41:03,332 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-10-12 14:41:03,332 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 14:41:03,360 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 14:41:03,360 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-12 14:41:03,361 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 02:41:03 BoogieIcfgContainer [2024-10-12 14:41:03,361 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 14:41:03,362 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 14:41:03,363 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 14:41:03,365 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 14:41:03,365 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 02:41:02" (1/3) ... [2024-10-12 14:41:03,365 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@556e1d1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 02:41:03, skipping insertion in model container [2024-10-12 14:41:03,365 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:41:02" (2/3) ... [2024-10-12 14:41:03,366 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@556e1d1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 02:41:03, skipping insertion in model container [2024-10-12 14:41:03,366 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 02:41:03" (3/3) ... [2024-10-12 14:41:03,367 INFO L112 eAbstractionObserver]: Analyzing ICFG sum40-2.i [2024-10-12 14:41:03,378 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 14:41:03,378 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-12 14:41:03,415 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 14:41:03,420 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;@447e3877, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 14:41:03,421 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-12 14:41:03,424 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-12 14:41:03,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-10-12 14:41:03,429 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 14:41:03,429 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 14:41:03,429 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 14:41:03,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 14:41:03,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1424232803, now seen corresponding path program 1 times [2024-10-12 14:41:03,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 14:41:03,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137975144] [2024-10-12 14:41:03,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 14:41:03,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 14:41:03,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:41:03,640 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-12 14:41:03,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:41:03,669 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 14:41:03,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:41:03,684 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-12 14:41:03,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:41:03,692 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-12 14:41:03,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 14:41:03,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137975144] [2024-10-12 14:41:03,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137975144] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 14:41:03,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542643084] [2024-10-12 14:41:03,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 14:41:03,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 14:41:03,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 14:41:03,696 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 14:41:03,697 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 14:41:03,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:41:03,781 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-10-12 14:41:03,786 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 14:41:03,796 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-12 14:41:03,797 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 14:41:03,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542643084] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 14:41:03,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 14:41:03,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2024-10-12 14:41:03,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013879702] [2024-10-12 14:41:03,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 14:41:03,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-12 14:41:03,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 14:41:03,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-12 14:41:03,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 14:41:03,825 INFO L87 Difference]: Start difference. First operand has 20 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-12 14:41:03,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 14:41:03,850 INFO L93 Difference]: Finished difference Result 38 states and 55 transitions. [2024-10-12 14:41:03,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-12 14:41:03,852 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2024-10-12 14:41:03,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 14:41:03,856 INFO L225 Difference]: With dead ends: 38 [2024-10-12 14:41:03,857 INFO L226 Difference]: Without dead ends: 18 [2024-10-12 14:41:03,859 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 14:41:03,864 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 14:41:03,864 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 14:41:03,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-10-12 14:41:03,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-10-12 14:41:03,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-12 14:41:03,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2024-10-12 14:41:03,892 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 25 [2024-10-12 14:41:03,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 14:41:03,893 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2024-10-12 14:41:03,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-12 14:41:03,893 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2024-10-12 14:41:03,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-10-12 14:41:03,895 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 14:41:03,895 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 14:41:03,907 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 14:41:04,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-10-12 14:41:04,097 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 14:41:04,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 14:41:04,098 INFO L85 PathProgramCache]: Analyzing trace with hash -245151773, now seen corresponding path program 1 times [2024-10-12 14:41:04,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 14:41:04,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546205280] [2024-10-12 14:41:04,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 14:41:04,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 14:41:04,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:41:04,173 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-12 14:41:04,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:41:04,192 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 14:41:04,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:41:04,203 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-12 14:41:04,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:41:04,214 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-12 14:41:04,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 14:41:04,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546205280] [2024-10-12 14:41:04,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546205280] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 14:41:04,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906796773] [2024-10-12 14:41:04,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 14:41:04,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 14:41:04,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 14:41:04,219 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 14:41:04,220 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 14:41:04,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:41:04,284 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 14:41:04,286 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 14:41:04,301 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-12 14:41:04,302 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 14:41:04,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906796773] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 14:41:04,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 14:41:04,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2024-10-12 14:41:04,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061644135] [2024-10-12 14:41:04,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 14:41:04,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 14:41:04,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 14:41:04,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 14:41:04,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 14:41:04,306 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-10-12 14:41:04,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 14:41:04,322 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2024-10-12 14:41:04,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 14:41:04,322 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2024-10-12 14:41:04,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 14:41:04,323 INFO L225 Difference]: With dead ends: 35 [2024-10-12 14:41:04,323 INFO L226 Difference]: Without dead ends: 19 [2024-10-12 14:41:04,323 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 14:41:04,324 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 14:41:04,325 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 14:41:04,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-10-12 14:41:04,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-10-12 14:41:04,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-12 14:41:04,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2024-10-12 14:41:04,329 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 25 [2024-10-12 14:41:04,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 14:41:04,329 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2024-10-12 14:41:04,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-10-12 14:41:04,330 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2024-10-12 14:41:04,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-12 14:41:04,330 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 14:41:04,330 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 14:41:04,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-12 14:41:04,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-10-12 14:41:04,536 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 14:41:04,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 14:41:04,537 INFO L85 PathProgramCache]: Analyzing trace with hash 732130395, now seen corresponding path program 1 times [2024-10-12 14:41:04,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 14:41:04,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911196045] [2024-10-12 14:41:04,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 14:41:04,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 14:41:04,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:41:04,612 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-12 14:41:04,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:41:04,623 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 14:41:04,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:41:04,627 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-12 14:41:04,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:41:04,631 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-12 14:41:04,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 14:41:04,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911196045] [2024-10-12 14:41:04,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911196045] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 14:41:04,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824685514] [2024-10-12 14:41:04,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 14:41:04,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 14:41:04,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 14:41:04,633 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 14:41:04,634 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 14:41:04,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:41:04,687 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 14:41:04,688 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 14:41:04,692 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-12 14:41:04,692 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 14:41:04,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1824685514] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 14:41:04,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 14:41:04,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5 [2024-10-12 14:41:04,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753052814] [2024-10-12 14:41:04,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 14:41:04,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 14:41:04,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 14:41:04,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 14:41:04,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 14:41:04,696 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-12 14:41:04,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 14:41:04,711 INFO L93 Difference]: Finished difference Result 34 states and 44 transitions. [2024-10-12 14:41:04,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 14:41:04,713 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26 [2024-10-12 14:41:04,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 14:41:04,713 INFO L225 Difference]: With dead ends: 34 [2024-10-12 14:41:04,713 INFO L226 Difference]: Without dead ends: 20 [2024-10-12 14:41:04,714 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 14:41:04,714 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 14:41:04,715 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 14:41:04,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-10-12 14:41:04,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2024-10-12 14:41:04,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-12 14:41:04,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2024-10-12 14:41:04,721 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 26 [2024-10-12 14:41:04,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 14:41:04,721 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2024-10-12 14:41:04,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-12 14:41:04,721 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2024-10-12 14:41:04,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-10-12 14:41:04,722 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 14:41:04,722 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 14:41:04,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-12 14:41:04,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 14:41:04,923 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 14:41:04,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 14:41:04,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1447624125, now seen corresponding path program 1 times [2024-10-12 14:41:04,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 14:41:04,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668671334] [2024-10-12 14:41:04,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 14:41:04,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 14:41:04,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:41:05,027 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-12 14:41:05,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:41:05,039 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-12 14:41:05,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:41:05,047 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-12 14:41:05,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:41:05,054 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-12 14:41:05,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 14:41:05,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668671334] [2024-10-12 14:41:05,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668671334] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 14:41:05,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767592555] [2024-10-12 14:41:05,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 14:41:05,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 14:41:05,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 14:41:05,058 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 14:41:05,059 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 14:41:05,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:41:05,113 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 14:41:05,114 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 14:41:05,123 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-12 14:41:05,123 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 14:41:05,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767592555] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 14:41:05,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 14:41:05,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-10-12 14:41:05,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461850051] [2024-10-12 14:41:05,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 14:41:05,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 14:41:05,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 14:41:05,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 14:41:05,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 14:41:05,126 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-12 14:41:05,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 14:41:05,144 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2024-10-12 14:41:05,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 14:41:05,145 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2024-10-12 14:41:05,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 14:41:05,145 INFO L225 Difference]: With dead ends: 32 [2024-10-12 14:41:05,146 INFO L226 Difference]: Without dead ends: 21 [2024-10-12 14:41:05,147 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 14:41:05,147 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 14:41:05,148 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 14:41:05,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-10-12 14:41:05,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-10-12 14:41:05,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-12 14:41:05,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2024-10-12 14:41:05,152 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 29 [2024-10-12 14:41:05,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 14:41:05,152 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2024-10-12 14:41:05,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-12 14:41:05,153 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2024-10-12 14:41:05,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-10-12 14:41:05,154 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 14:41:05,155 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 14:41:05,168 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 14:41:05,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 14:41:05,356 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 14:41:05,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 14:41:05,356 INFO L85 PathProgramCache]: Analyzing trace with hash -883090132, now seen corresponding path program 1 times [2024-10-12 14:41:05,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 14:41:05,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756465119] [2024-10-12 14:41:05,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 14:41:05,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 14:41:05,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:41:05,395 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-12 14:41:05,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:41:05,399 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-12 14:41:05,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:41:05,402 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-12 14:41:05,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:41:05,406 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-10-12 14:41:05,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 14:41:05,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756465119] [2024-10-12 14:41:05,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756465119] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 14:41:05,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23705876] [2024-10-12 14:41:05,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 14:41:05,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 14:41:05,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 14:41:05,408 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 14:41:05,409 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 14:41:05,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:41:05,459 INFO L255 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 14:41:05,460 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 14:41:05,480 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-10-12 14:41:05,480 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 14:41:05,518 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-10-12 14:41:05,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23705876] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 14:41:05,519 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 14:41:05,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 7 [2024-10-12 14:41:05,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117219260] [2024-10-12 14:41:05,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 14:41:05,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 14:41:05,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 14:41:05,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 14:41:05,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-12 14:41:05,521 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-10-12 14:41:05,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 14:41:05,543 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2024-10-12 14:41:05,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 14:41:05,544 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 30 [2024-10-12 14:41:05,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 14:41:05,544 INFO L225 Difference]: With dead ends: 42 [2024-10-12 14:41:05,545 INFO L226 Difference]: Without dead ends: 24 [2024-10-12 14:41:05,545 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-12 14:41:05,546 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 14:41:05,546 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 62 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 14:41:05,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-10-12 14:41:05,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-10-12 14:41:05,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-12 14:41:05,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2024-10-12 14:41:05,553 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 30 [2024-10-12 14:41:05,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 14:41:05,555 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2024-10-12 14:41:05,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-10-12 14:41:05,555 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2024-10-12 14:41:05,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-10-12 14:41:05,556 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 14:41:05,556 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 14:41:05,568 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 14:41:05,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 14:41:05,757 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 14:41:05,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 14:41:05,757 INFO L85 PathProgramCache]: Analyzing trace with hash 74863284, now seen corresponding path program 2 times [2024-10-12 14:41:05,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 14:41:05,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332829612] [2024-10-12 14:41:05,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 14:41:05,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 14:41:05,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:41:05,809 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 14:41:05,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:41:05,832 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-12 14:41:05,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:41:05,845 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-12 14:41:05,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:41:05,851 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-12 14:41:05,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 14:41:05,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332829612] [2024-10-12 14:41:05,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332829612] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 14:41:05,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129816823] [2024-10-12 14:41:05,852 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 14:41:05,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 14:41:05,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 14:41:05,854 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 14:41:05,855 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 14:41:05,916 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 14:41:05,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 14:41:05,917 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-12 14:41:05,918 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 14:41:05,952 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-10-12 14:41:05,952 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 14:41:06,011 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-10-12 14:41:06,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129816823] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 14:41:06,011 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 14:41:06,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 7] total 14 [2024-10-12 14:41:06,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927961942] [2024-10-12 14:41:06,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 14:41:06,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-12 14:41:06,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 14:41:06,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-12 14:41:06,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-10-12 14:41:06,013 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-12 14:41:06,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 14:41:06,047 INFO L93 Difference]: Finished difference Result 49 states and 66 transitions. [2024-10-12 14:41:06,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-12 14:41:06,047 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) Word has length 33 [2024-10-12 14:41:06,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 14:41:06,048 INFO L225 Difference]: With dead ends: 49 [2024-10-12 14:41:06,048 INFO L226 Difference]: Without dead ends: 31 [2024-10-12 14:41:06,048 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-10-12 14:41:06,049 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 14:41:06,049 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 62 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 14:41:06,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-10-12 14:41:06,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-10-12 14:41:06,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-12 14:41:06,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2024-10-12 14:41:06,054 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 33 [2024-10-12 14:41:06,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 14:41:06,054 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2024-10-12 14:41:06,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-12 14:41:06,054 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2024-10-12 14:41:06,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-10-12 14:41:06,055 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 14:41:06,055 INFO L215 NwaCegarLoop]: trace histogram [10, 6, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 14:41:06,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-12 14:41:06,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 14:41:06,258 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 14:41:06,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 14:41:06,258 INFO L85 PathProgramCache]: Analyzing trace with hash -231774534, now seen corresponding path program 3 times [2024-10-12 14:41:06,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 14:41:06,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231335340] [2024-10-12 14:41:06,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 14:41:06,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 14:41:06,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:41:06,336 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-12 14:41:06,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:41:06,340 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-12 14:41:06,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:41:06,343 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-12 14:41:06,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:41:06,346 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-10-12 14:41:06,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 14:41:06,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231335340] [2024-10-12 14:41:06,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231335340] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 14:41:06,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298432840] [2024-10-12 14:41:06,347 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-12 14:41:06,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 14:41:06,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 14:41:06,348 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 14:41:06,349 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 14:41:06,414 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-12 14:41:06,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 14:41:06,415 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-12 14:41:06,416 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 14:41:06,437 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-10-12 14:41:06,437 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 14:41:06,472 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-10-12 14:41:06,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298432840] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 14:41:06,473 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 14:41:06,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 10 [2024-10-12 14:41:06,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084906514] [2024-10-12 14:41:06,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 14:41:06,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-12 14:41:06,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 14:41:06,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-12 14:41:06,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-10-12 14:41:06,474 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-12 14:41:06,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 14:41:06,509 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2024-10-12 14:41:06,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 14:41:06,510 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 42 [2024-10-12 14:41:06,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 14:41:06,511 INFO L225 Difference]: With dead ends: 53 [2024-10-12 14:41:06,511 INFO L226 Difference]: Without dead ends: 36 [2024-10-12 14:41:06,512 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-10-12 14:41:06,512 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 14:41:06,512 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 105 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 14:41:06,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-10-12 14:41:06,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-10-12 14:41:06,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 31 states have (on average 1.096774193548387) internal successors, (34), 31 states have internal predecessors, (34), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-12 14:41:06,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2024-10-12 14:41:06,519 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 42 [2024-10-12 14:41:06,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 14:41:06,520 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2024-10-12 14:41:06,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-12 14:41:06,521 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2024-10-12 14:41:06,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-12 14:41:06,522 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 14:41:06,523 INFO L215 NwaCegarLoop]: trace histogram [18, 10, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 14:41:06,536 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-12 14:41:06,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 14:41:06,728 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 14:41:06,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 14:41:06,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1404061245, now seen corresponding path program 4 times [2024-10-12 14:41:06,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 14:41:06,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117411494] [2024-10-12 14:41:06,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 14:41:06,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 14:41:06,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:41:06,924 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-12 14:41:06,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:41:06,934 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-12 14:41:06,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:41:06,953 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-12 14:41:06,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:41:06,959 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2024-10-12 14:41:06,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 14:41:06,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117411494] [2024-10-12 14:41:06,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117411494] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 14:41:06,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900878652] [2024-10-12 14:41:06,960 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-12 14:41:06,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 14:41:06,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 14:41:06,962 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 14:41:06,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-12 14:41:07,045 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-12 14:41:07,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 14:41:07,048 INFO L255 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-12 14:41:07,049 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 14:41:07,082 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2024-10-12 14:41:07,082 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 14:41:07,256 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2024-10-12 14:41:07,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900878652] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 14:41:07,256 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 14:41:07,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 13] total 25 [2024-10-12 14:41:07,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264073286] [2024-10-12 14:41:07,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 14:41:07,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-12 14:41:07,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 14:41:07,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-12 14:41:07,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-10-12 14:41:07,259 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand has 25 states, 25 states have (on average 1.72) internal successors, (43), 25 states have internal predecessors, (43), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-10-12 14:41:07,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 14:41:07,311 INFO L93 Difference]: Finished difference Result 72 states and 91 transitions. [2024-10-12 14:41:07,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-12 14:41:07,313 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.72) internal successors, (43), 25 states have internal predecessors, (43), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 55 [2024-10-12 14:41:07,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 14:41:07,314 INFO L225 Difference]: With dead ends: 72 [2024-10-12 14:41:07,314 INFO L226 Difference]: Without dead ends: 48 [2024-10-12 14:41:07,317 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-10-12 14:41:07,317 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 14:41:07,318 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 92 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 14:41:07,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-10-12 14:41:07,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-10-12 14:41:07,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 43 states have (on average 1.069767441860465) internal successors, (46), 43 states have internal predecessors, (46), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-12 14:41:07,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2024-10-12 14:41:07,324 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 55 [2024-10-12 14:41:07,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 14:41:07,325 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2024-10-12 14:41:07,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.72) internal successors, (43), 25 states have internal predecessors, (43), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-10-12 14:41:07,325 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2024-10-12 14:41:07,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-10-12 14:41:07,326 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 14:41:07,326 INFO L215 NwaCegarLoop]: trace histogram [22, 18, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 14:41:07,338 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-12 14:41:07,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-10-12 14:41:07,527 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 14:41:07,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 14:41:07,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1582476349, now seen corresponding path program 5 times [2024-10-12 14:41:07,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 14:41:07,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514456448] [2024-10-12 14:41:07,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 14:41:07,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 14:41:07,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:41:08,051 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-12 14:41:08,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:41:08,058 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-12 14:41:08,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:41:08,063 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-12 14:41:08,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:41:08,073 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2024-10-12 14:41:08,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 14:41:08,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514456448] [2024-10-12 14:41:08,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514456448] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 14:41:08,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048387424] [2024-10-12 14:41:08,073 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-12 14:41:08,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 14:41:08,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 14:41:08,076 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 14:41:08,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-12 14:41:08,479 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-10-12 14:41:08,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 14:41:08,482 INFO L255 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-12 14:41:08,483 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 14:41:08,528 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 104 proven. 3 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2024-10-12 14:41:08,528 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 14:41:08,594 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2024-10-12 14:41:08,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048387424] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 14:41:08,594 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 14:41:08,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 5, 5] total 31 [2024-10-12 14:41:08,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988469411] [2024-10-12 14:41:08,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 14:41:08,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-10-12 14:41:08,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 14:41:08,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-10-12 14:41:08,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=603, Unknown=0, NotChecked=0, Total=930 [2024-10-12 14:41:08,596 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand has 31 states, 31 states have (on average 1.7419354838709677) internal successors, (54), 31 states have internal predecessors, (54), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-12 14:41:08,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 14:41:08,632 INFO L93 Difference]: Finished difference Result 77 states and 89 transitions. [2024-10-12 14:41:08,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-10-12 14:41:08,633 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.7419354838709677) internal successors, (54), 31 states have internal predecessors, (54), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 67 [2024-10-12 14:41:08,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 14:41:08,633 INFO L225 Difference]: With dead ends: 77 [2024-10-12 14:41:08,633 INFO L226 Difference]: Without dead ends: 53 [2024-10-12 14:41:08,634 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=327, Invalid=603, Unknown=0, NotChecked=0, Total=930 [2024-10-12 14:41:08,634 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 14:41:08,634 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 61 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 14:41:08,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-10-12 14:41:08,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2024-10-12 14:41:08,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 48 states have (on average 1.0625) internal successors, (51), 48 states have internal predecessors, (51), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-12 14:41:08,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2024-10-12 14:41:08,639 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 67 [2024-10-12 14:41:08,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 14:41:08,639 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2024-10-12 14:41:08,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.7419354838709677) internal successors, (54), 31 states have internal predecessors, (54), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-12 14:41:08,640 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2024-10-12 14:41:08,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-10-12 14:41:08,640 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 14:41:08,640 INFO L215 NwaCegarLoop]: trace histogram [23, 18, 6, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 14:41:08,655 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-12 14:41:08,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 14:41:08,841 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 14:41:08,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 14:41:08,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1618269179, now seen corresponding path program 6 times [2024-10-12 14:41:08,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 14:41:08,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271534699] [2024-10-12 14:41:08,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 14:41:08,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 14:41:08,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:41:09,370 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-12 14:41:09,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:41:09,375 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-12 14:41:09,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:41:09,379 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-12 14:41:09,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:41:09,383 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2024-10-12 14:41:09,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 14:41:09,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271534699] [2024-10-12 14:41:09,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271534699] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 14:41:09,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287880749] [2024-10-12 14:41:09,383 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-12 14:41:09,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 14:41:09,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 14:41:09,385 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 14:41:09,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-12 14:41:09,561 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-10-12 14:41:09,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 14:41:09,563 INFO L255 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-12 14:41:09,564 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 14:41:09,668 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 102 proven. 21 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2024-10-12 14:41:09,668 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 14:41:09,806 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 102 proven. 21 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2024-10-12 14:41:09,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287880749] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 14:41:09,807 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 14:41:09,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 9, 9] total 40 [2024-10-12 14:41:09,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219171525] [2024-10-12 14:41:09,807 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 14:41:09,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-10-12 14:41:09,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 14:41:09,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-10-12 14:41:09,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=444, Invalid=1116, Unknown=0, NotChecked=0, Total=1560 [2024-10-12 14:41:09,809 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand has 40 states, 40 states have (on average 1.6) internal successors, (64), 40 states have internal predecessors, (64), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-12 14:41:09,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 14:41:09,857 INFO L93 Difference]: Finished difference Result 90 states and 109 transitions. [2024-10-12 14:41:09,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-10-12 14:41:09,857 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.6) internal successors, (64), 40 states have internal predecessors, (64), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 72 [2024-10-12 14:41:09,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 14:41:09,858 INFO L225 Difference]: With dead ends: 90 [2024-10-12 14:41:09,858 INFO L226 Difference]: Without dead ends: 62 [2024-10-12 14:41:09,858 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=444, Invalid=1116, Unknown=0, NotChecked=0, Total=1560 [2024-10-12 14:41:09,859 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 14:41:09,859 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 137 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 14:41:09,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-10-12 14:41:09,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2024-10-12 14:41:09,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 57 states have (on average 1.0526315789473684) internal successors, (60), 57 states have internal predecessors, (60), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-12 14:41:09,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2024-10-12 14:41:09,869 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 72 [2024-10-12 14:41:09,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 14:41:09,870 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2024-10-12 14:41:09,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.6) internal successors, (64), 40 states have internal predecessors, (64), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-12 14:41:09,870 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2024-10-12 14:41:09,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-10-12 14:41:09,871 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 14:41:09,871 INFO L215 NwaCegarLoop]: trace histogram [42, 24, 6, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 14:41:09,886 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-12 14:41:10,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-12 14:41:10,071 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 14:41:10,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 14:41:10,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1229799293, now seen corresponding path program 7 times [2024-10-12 14:41:10,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 14:41:10,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912604560] [2024-10-12 14:41:10,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 14:41:10,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 14:41:10,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:41:10,634 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-12 14:41:10,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:41:10,640 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-12 14:41:10,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:41:10,647 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-10-12 14:41:10,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:41:10,653 INFO L134 CoverageAnalysis]: Checked inductivity of 1320 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 1020 trivial. 0 not checked. [2024-10-12 14:41:10,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 14:41:10,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912604560] [2024-10-12 14:41:10,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912604560] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 14:41:10,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574069964] [2024-10-12 14:41:10,654 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-12 14:41:10,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 14:41:10,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 14:41:10,655 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 14:41:10,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-12 14:41:10,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:41:10,789 INFO L255 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-12 14:41:10,791 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 14:41:10,829 INFO L134 CoverageAnalysis]: Checked inductivity of 1320 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 1020 trivial. 0 not checked. [2024-10-12 14:41:10,829 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 14:41:11,383 INFO L134 CoverageAnalysis]: Checked inductivity of 1320 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 1020 trivial. 0 not checked. [2024-10-12 14:41:11,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574069964] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 14:41:11,383 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 14:41:11,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26, 27] total 43 [2024-10-12 14:41:11,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858529083] [2024-10-12 14:41:11,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 14:41:11,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-10-12 14:41:11,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 14:41:11,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-10-12 14:41:11,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2024-10-12 14:41:11,385 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand has 43 states, 43 states have (on average 1.441860465116279) internal successors, (62), 43 states have internal predecessors, (62), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-10-12 14:41:11,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 14:41:11,442 INFO L93 Difference]: Finished difference Result 114 states and 137 transitions. [2024-10-12 14:41:11,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-10-12 14:41:11,444 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.441860465116279) internal successors, (62), 43 states have internal predecessors, (62), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 97 [2024-10-12 14:41:11,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 14:41:11,444 INFO L225 Difference]: With dead ends: 114 [2024-10-12 14:41:11,444 INFO L226 Difference]: Without dead ends: 78 [2024-10-12 14:41:11,445 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 173 SyntacticMatches, 10 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2024-10-12 14:41:11,445 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 14:41:11,446 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 122 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 14:41:11,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-10-12 14:41:11,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2024-10-12 14:41:11,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 73 states have (on average 1.0410958904109588) internal successors, (76), 73 states have internal predecessors, (76), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-12 14:41:11,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 82 transitions. [2024-10-12 14:41:11,454 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 82 transitions. Word has length 97 [2024-10-12 14:41:11,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 14:41:11,454 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 82 transitions. [2024-10-12 14:41:11,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.441860465116279) internal successors, (62), 43 states have internal predecessors, (62), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-10-12 14:41:11,455 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 82 transitions. [2024-10-12 14:41:11,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-10-12 14:41:11,455 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 14:41:11,456 INFO L215 NwaCegarLoop]: trace histogram [42, 40, 6, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 14:41:11,469 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-12 14:41:11,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-12 14:41:11,660 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 14:41:11,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 14:41:11,660 INFO L85 PathProgramCache]: Analyzing trace with hash 323369091, now seen corresponding path program 8 times [2024-10-12 14:41:11,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 14:41:11,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695663529] [2024-10-12 14:41:11,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 14:41:11,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 14:41:11,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:41:11,894 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-12 14:41:11,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:41:12,016 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-12 14:41:12,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:41:12,022 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-12 14:41:12,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:41:12,028 INFO L134 CoverageAnalysis]: Checked inductivity of 1840 backedges. 0 proven. 559 refuted. 0 times theorem prover too weak. 1281 trivial. 0 not checked. [2024-10-12 14:41:12,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 14:41:12,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695663529] [2024-10-12 14:41:12,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695663529] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 14:41:12,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623646627] [2024-10-12 14:41:12,028 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 14:41:12,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 14:41:12,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 14:41:12,030 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 14:41:12,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-12 14:41:12,197 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 14:41:12,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 14:41:12,199 INFO L255 TraceCheckSpWp]: Trace formula consists of 733 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-12 14:41:12,202 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 14:41:12,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1840 backedges. 452 proven. 105 refuted. 0 times theorem prover too weak. 1283 trivial. 0 not checked. [2024-10-12 14:41:12,228 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 14:41:12,474 INFO L134 CoverageAnalysis]: Checked inductivity of 1840 backedges. 0 proven. 559 refuted. 0 times theorem prover too weak. 1281 trivial. 0 not checked. [2024-10-12 14:41:12,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623646627] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 14:41:12,475 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 14:41:12,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 32 [2024-10-12 14:41:12,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541131440] [2024-10-12 14:41:12,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 14:41:12,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-10-12 14:41:12,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 14:41:12,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-10-12 14:41:12,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2024-10-12 14:41:12,477 INFO L87 Difference]: Start difference. First operand 78 states and 82 transitions. Second operand has 32 states, 32 states have (on average 1.625) internal successors, (52), 32 states have internal predecessors, (52), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 14:41:12,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 14:41:12,516 INFO L93 Difference]: Finished difference Result 128 states and 153 transitions. [2024-10-12 14:41:12,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-10-12 14:41:12,517 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.625) internal successors, (52), 32 states have internal predecessors, (52), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2024-10-12 14:41:12,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 14:41:12,518 INFO L225 Difference]: With dead ends: 128 [2024-10-12 14:41:12,518 INFO L226 Difference]: Without dead ends: 94 [2024-10-12 14:41:12,519 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2024-10-12 14:41:12,519 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 14:41:12,519 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 62 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 14:41:12,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-10-12 14:41:12,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2024-10-12 14:41:12,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 89 states have (on average 1.0337078651685394) internal successors, (92), 89 states have internal predecessors, (92), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-12 14:41:12,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 98 transitions. [2024-10-12 14:41:12,533 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 98 transitions. Word has length 113 [2024-10-12 14:41:12,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 14:41:12,534 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 98 transitions. [2024-10-12 14:41:12,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.625) internal successors, (52), 32 states have internal predecessors, (52), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 14:41:12,534 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 98 transitions. [2024-10-12 14:41:12,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-10-12 14:41:12,538 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 14:41:12,539 INFO L215 NwaCegarLoop]: trace histogram [90, 40, 6, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 14:41:12,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-12 14:41:12,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-12 14:41:12,739 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 14:41:12,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 14:41:12,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1947232125, now seen corresponding path program 9 times [2024-10-12 14:41:12,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 14:41:12,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049266117] [2024-10-12 14:41:12,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 14:41:12,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 14:41:12,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:41:13,217 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-12 14:41:13,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:41:13,626 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-12 14:41:13,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:41:13,636 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-10-12 14:41:13,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:41:13,647 INFO L134 CoverageAnalysis]: Checked inductivity of 5128 backedges. 0 proven. 2391 refuted. 0 times theorem prover too weak. 2737 trivial. 0 not checked. [2024-10-12 14:41:13,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 14:41:13,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049266117] [2024-10-12 14:41:13,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049266117] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 14:41:13,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712568728] [2024-10-12 14:41:13,647 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-12 14:41:13,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 14:41:13,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 14:41:13,649 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 14:41:13,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-12 14:41:13,800 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-10-12 14:41:13,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 14:41:13,802 INFO L255 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-12 14:41:13,804 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 14:41:13,896 INFO L134 CoverageAnalysis]: Checked inductivity of 5128 backedges. 1928 proven. 21 refuted. 0 times theorem prover too weak. 3179 trivial. 0 not checked. [2024-10-12 14:41:13,896 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 14:41:14,034 INFO L134 CoverageAnalysis]: Checked inductivity of 5128 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 5107 trivial. 0 not checked. [2024-10-12 14:41:14,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712568728] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 14:41:14,035 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 14:41:14,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 9, 9] total 47 [2024-10-12 14:41:14,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669245631] [2024-10-12 14:41:14,035 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 14:41:14,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-10-12 14:41:14,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 14:41:14,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-10-12 14:41:14,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=647, Invalid=1515, Unknown=0, NotChecked=0, Total=2162 [2024-10-12 14:41:14,037 INFO L87 Difference]: Start difference. First operand 94 states and 98 transitions. Second operand has 47 states, 47 states have (on average 1.4680851063829787) internal successors, (69), 47 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-12 14:41:14,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 14:41:14,086 INFO L93 Difference]: Finished difference Result 153 states and 171 transitions. [2024-10-12 14:41:14,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-10-12 14:41:14,086 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.4680851063829787) internal successors, (69), 47 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 161 [2024-10-12 14:41:14,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 14:41:14,088 INFO L225 Difference]: With dead ends: 153 [2024-10-12 14:41:14,088 INFO L226 Difference]: Without dead ends: 103 [2024-10-12 14:41:14,091 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=647, Invalid=1515, Unknown=0, NotChecked=0, Total=2162 [2024-10-12 14:41:14,091 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 14:41:14,092 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 103 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 14:41:14,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-10-12 14:41:14,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2024-10-12 14:41:14,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 98 states have (on average 1.030612244897959) internal successors, (101), 98 states have internal predecessors, (101), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-12 14:41:14,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 107 transitions. [2024-10-12 14:41:14,100 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 107 transitions. Word has length 161 [2024-10-12 14:41:14,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 14:41:14,100 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 107 transitions. [2024-10-12 14:41:14,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.4680851063829787) internal successors, (69), 47 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-12 14:41:14,100 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 107 transitions. [2024-10-12 14:41:14,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-10-12 14:41:14,101 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 14:41:14,102 INFO L215 NwaCegarLoop]: trace histogram [93, 40, 14, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 14:41:14,116 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-10-12 14:41:14,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-12 14:41:14,302 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 14:41:14,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 14:41:14,303 INFO L85 PathProgramCache]: Analyzing trace with hash 598097819, now seen corresponding path program 10 times [2024-10-12 14:41:14,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 14:41:14,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511215701] [2024-10-12 14:41:14,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 14:41:14,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 14:41:14,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:41:14,804 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-12 14:41:14,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:41:15,263 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-12 14:41:15,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:41:15,273 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-10-12 14:41:15,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:41:15,284 INFO L134 CoverageAnalysis]: Checked inductivity of 5494 backedges. 0 proven. 2548 refuted. 0 times theorem prover too weak. 2946 trivial. 0 not checked. [2024-10-12 14:41:15,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 14:41:15,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511215701] [2024-10-12 14:41:15,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511215701] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 14:41:15,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898352826] [2024-10-12 14:41:15,284 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-12 14:41:15,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 14:41:15,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 14:41:15,286 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 14:41:15,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-12 14:41:15,504 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-12 14:41:15,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 14:41:15,509 INFO L255 TraceCheckSpWp]: Trace formula consists of 1044 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-10-12 14:41:15,511 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 14:41:15,553 INFO L134 CoverageAnalysis]: Checked inductivity of 5494 backedges. 2050 proven. 496 refuted. 0 times theorem prover too weak. 2948 trivial. 0 not checked. [2024-10-12 14:41:15,553 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 14:41:16,137 INFO L134 CoverageAnalysis]: Checked inductivity of 5494 backedges. 0 proven. 2548 refuted. 0 times theorem prover too weak. 2946 trivial. 0 not checked. [2024-10-12 14:41:16,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898352826] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 14:41:16,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 14:41:16,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 42 [2024-10-12 14:41:16,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849847461] [2024-10-12 14:41:16,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 14:41:16,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-10-12 14:41:16,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 14:41:16,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-10-12 14:41:16,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2024-10-12 14:41:16,139 INFO L87 Difference]: Start difference. First operand 103 states and 107 transitions. Second operand has 42 states, 42 states have (on average 1.5) internal successors, (63), 42 states have internal predecessors, (63), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 14:41:16,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 14:41:16,184 INFO L93 Difference]: Finished difference Result 171 states and 189 transitions. [2024-10-12 14:41:16,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-10-12 14:41:16,184 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.5) internal successors, (63), 42 states have internal predecessors, (63), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2024-10-12 14:41:16,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 14:41:16,185 INFO L225 Difference]: With dead ends: 171 [2024-10-12 14:41:16,185 INFO L226 Difference]: Without dead ends: 112 [2024-10-12 14:41:16,186 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 318 SyntacticMatches, 24 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2024-10-12 14:41:16,186 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 14:41:16,186 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 47 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 14:41:16,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-10-12 14:41:16,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2024-10-12 14:41:16,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 107 states have (on average 1.02803738317757) internal successors, (110), 107 states have internal predecessors, (110), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-12 14:41:16,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 116 transitions. [2024-10-12 14:41:16,195 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 116 transitions. Word has length 172 [2024-10-12 14:41:16,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 14:41:16,195 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 116 transitions. [2024-10-12 14:41:16,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.5) internal successors, (63), 42 states have internal predecessors, (63), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 14:41:16,195 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 116 transitions. [2024-10-12 14:41:16,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2024-10-12 14:41:16,196 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 14:41:16,197 INFO L215 NwaCegarLoop]: trace histogram [120, 40, 14, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 14:41:16,210 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-10-12 14:41:16,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 14:41:16,401 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 14:41:16,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 14:41:16,401 INFO L85 PathProgramCache]: Analyzing trace with hash -942510077, now seen corresponding path program 11 times [2024-10-12 14:41:16,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 14:41:16,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148311585] [2024-10-12 14:41:16,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 14:41:16,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 14:41:16,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:41:16,857 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-12 14:41:16,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:41:16,869 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-10-12 14:41:16,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:41:16,881 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-10-12 14:41:16,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:41:16,893 INFO L134 CoverageAnalysis]: Checked inductivity of 8437 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 8332 trivial. 0 not checked. [2024-10-12 14:41:16,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 14:41:16,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148311585] [2024-10-12 14:41:16,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148311585] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 14:41:16,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944998264] [2024-10-12 14:41:16,894 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-12 14:41:16,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 14:41:16,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 14:41:16,896 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 14:41:16,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process