./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/reducercommutativity/rangesum40.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/reducercommutativity/rangesum40.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 a418834dbd1069728d4982a06f4275da717a1d93e3d5061fbbc21c5c3a319ddf --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-08 09:52:08,320 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 09:52:08,390 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 09:52:08,395 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 09:52:08,396 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 09:52:08,417 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 09:52:08,418 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 09:52:08,418 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 09:52:08,419 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 09:52:08,419 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 09:52:08,419 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 09:52:08,420 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 09:52:08,420 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 09:52:08,421 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 09:52:08,421 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 09:52:08,421 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 09:52:08,422 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 09:52:08,422 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 09:52:08,422 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 09:52:08,423 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 09:52:08,423 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 09:52:08,424 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 09:52:08,424 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 09:52:08,424 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 09:52:08,425 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 09:52:08,425 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 09:52:08,425 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 09:52:08,426 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 09:52:08,426 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 09:52:08,426 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 09:52:08,427 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 09:52:08,427 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 09:52:08,427 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 09:52:08,428 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 09:52:08,428 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 09:52:08,428 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 09:52:08,429 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 09:52:08,429 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 09:52:08,429 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 09:52:08,430 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 09:52:08,430 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 09:52:08,430 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 09:52:08,434 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a418834dbd1069728d4982a06f4275da717a1d93e3d5061fbbc21c5c3a319ddf [2024-11-08 09:52:08,667 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 09:52:08,695 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 09:52:08,698 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 09:52:08,699 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 09:52:08,700 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 09:52:08,701 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/reducercommutativity/rangesum40.i [2024-11-08 09:52:10,203 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 09:52:10,389 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 09:52:10,390 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/rangesum40.i [2024-11-08 09:52:10,396 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/981fb880b/58dcdac5b1d84868928dd20b58afd6b4/FLAG59172651c [2024-11-08 09:52:10,409 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/981fb880b/58dcdac5b1d84868928dd20b58afd6b4 [2024-11-08 09:52:10,412 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 09:52:10,413 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 09:52:10,414 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 09:52:10,414 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 09:52:10,419 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 09:52:10,420 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 09:52:10" (1/1) ... [2024-11-08 09:52:10,421 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dee18d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:52:10, skipping insertion in model container [2024-11-08 09:52:10,421 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 09:52:10" (1/1) ... [2024-11-08 09:52:10,445 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 09:52:10,650 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/rangesum40.i[1465,1478] [2024-11-08 09:52:10,658 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 09:52:10,667 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 09:52:10,693 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/rangesum40.i[1465,1478] [2024-11-08 09:52:10,694 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 09:52:10,717 INFO L204 MainTranslator]: Completed translation [2024-11-08 09:52:10,718 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:52:10 WrapperNode [2024-11-08 09:52:10,718 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 09:52:10,719 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 09:52:10,719 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 09:52:10,719 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 09:52:10,726 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:52:10" (1/1) ... [2024-11-08 09:52:10,737 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:52:10" (1/1) ... [2024-11-08 09:52:10,761 INFO L138 Inliner]: procedures = 17, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2024-11-08 09:52:10,763 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 09:52:10,764 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 09:52:10,764 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 09:52:10,764 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 09:52:10,800 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:52:10" (1/1) ... [2024-11-08 09:52:10,800 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:52:10" (1/1) ... [2024-11-08 09:52:10,803 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:52:10" (1/1) ... [2024-11-08 09:52:10,856 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]. [2024-11-08 09:52:10,857 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:52:10" (1/1) ... [2024-11-08 09:52:10,857 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:52:10" (1/1) ... [2024-11-08 09:52:10,865 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:52:10" (1/1) ... [2024-11-08 09:52:10,872 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:52:10" (1/1) ... [2024-11-08 09:52:10,875 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:52:10" (1/1) ... [2024-11-08 09:52:10,876 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:52:10" (1/1) ... [2024-11-08 09:52:10,878 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 09:52:10,879 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 09:52:10,879 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 09:52:10,879 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 09:52:10,880 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:52:10" (1/1) ... [2024-11-08 09:52:10,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 09:52:10,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:52:10,926 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 09:52:10,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 09:52:10,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 09:52:10,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 09:52:10,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 09:52:10,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-08 09:52:10,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 09:52:10,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 09:52:10,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 09:52:10,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 09:52:10,974 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 09:52:10,974 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 09:52:10,974 INFO L130 BoogieDeclarations]: Found specification of procedure rangesum [2024-11-08 09:52:10,974 INFO L138 BoogieDeclarations]: Found implementation of procedure rangesum [2024-11-08 09:52:10,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 09:52:11,035 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 09:52:11,037 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 09:52:11,185 INFO L? ?]: Removed 18 outVars from TransFormulas that were not future-live. [2024-11-08 09:52:11,185 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 09:52:11,198 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 09:52:11,198 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-08 09:52:11,198 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 09:52:11 BoogieIcfgContainer [2024-11-08 09:52:11,199 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 09:52:11,201 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 09:52:11,201 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 09:52:11,204 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 09:52:11,204 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 09:52:10" (1/3) ... [2024-11-08 09:52:11,205 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77e6482 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 09:52:11, skipping insertion in model container [2024-11-08 09:52:11,206 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:52:10" (2/3) ... [2024-11-08 09:52:11,206 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77e6482 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 09:52:11, skipping insertion in model container [2024-11-08 09:52:11,206 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 09:52:11" (3/3) ... [2024-11-08 09:52:11,207 INFO L112 eAbstractionObserver]: Analyzing ICFG rangesum40.i [2024-11-08 09:52:11,222 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 09:52:11,222 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 09:52:11,275 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 09:52:11,280 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;@5662f922, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 09:52:11,281 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 09:52:11,285 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 23 states have internal predecessors, (32), 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) [2024-11-08 09:52:11,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-08 09:52:11,293 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:52:11,293 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] [2024-11-08 09:52:11,294 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:52:11,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:52:11,299 INFO L85 PathProgramCache]: Analyzing trace with hash -275565944, now seen corresponding path program 1 times [2024-11-08 09:52:11,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:52:11,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023503721] [2024-11-08 09:52:11,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:52:11,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:52:11,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:11,646 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 09:52:11,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:11,666 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-08 09:52:11,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:11,684 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-08 09:52:11,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:11,699 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 09:52:11,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:52:11,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023503721] [2024-11-08 09:52:11,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023503721] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 09:52:11,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 09:52:11,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 09:52:11,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185902501] [2024-11-08 09:52:11,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 09:52:11,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 09:52:11,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:52:11,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 09:52:11,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 09:52:11,733 INFO L87 Difference]: Start difference. First operand has 28 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 23 states have internal predecessors, (32), 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 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2024-11-08 09:52:11,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:52:11,759 INFO L93 Difference]: Finished difference Result 54 states and 77 transitions. [2024-11-08 09:52:11,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 09:52:11,764 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 29 [2024-11-08 09:52:11,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:52:11,768 INFO L225 Difference]: With dead ends: 54 [2024-11-08 09:52:11,768 INFO L226 Difference]: Without dead ends: 26 [2024-11-08 09:52:11,770 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 09:52:11,773 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 1 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 61 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 [2024-11-08 09:52:11,774 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 61 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 09:52:11,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-08 09:52:11,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2024-11-08 09:52:11,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 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) [2024-11-08 09:52:11,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2024-11-08 09:52:11,808 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 29 [2024-11-08 09:52:11,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:52:11,808 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2024-11-08 09:52:11,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2024-11-08 09:52:11,808 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2024-11-08 09:52:11,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-08 09:52:11,810 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:52:11,810 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, 1] [2024-11-08 09:52:11,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 09:52:11,810 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:52:11,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:52:11,813 INFO L85 PathProgramCache]: Analyzing trace with hash -653100523, now seen corresponding path program 1 times [2024-11-08 09:52:11,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:52:11,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056477175] [2024-11-08 09:52:11,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:52:11,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:52:11,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:11,963 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-08 09:52:11,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:11,983 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-08 09:52:11,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:11,997 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-08 09:52:12,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:12,010 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 09:52:12,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:52:12,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056477175] [2024-11-08 09:52:12,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056477175] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:52:12,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639877502] [2024-11-08 09:52:12,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:52:12,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:52:12,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:52:12,014 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 09:52:12,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 09:52:12,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:12,124 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 09:52:12,133 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:52:12,163 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 09:52:12,163 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 09:52:12,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639877502] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 09:52:12,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 09:52:12,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-08 09:52:12,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422981886] [2024-11-08 09:52:12,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 09:52:12,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 09:52:12,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:52:12,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 09:52:12,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 09:52:12,169 INFO L87 Difference]: Start difference. First operand 25 states and 31 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), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-08 09:52:12,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:52:12,191 INFO L93 Difference]: Finished difference Result 46 states and 61 transitions. [2024-11-08 09:52:12,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 09:52:12,192 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), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2024-11-08 09:52:12,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:52:12,193 INFO L225 Difference]: With dead ends: 46 [2024-11-08 09:52:12,193 INFO L226 Difference]: Without dead ends: 28 [2024-11-08 09:52:12,194 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 09:52:12,195 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 2 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 09:52:12,197 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 51 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 09:52:12,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-08 09:52:12,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2024-11-08 09:52:12,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 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) [2024-11-08 09:52:12,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2024-11-08 09:52:12,202 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 31 [2024-11-08 09:52:12,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:52:12,203 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2024-11-08 09:52:12,203 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), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-08 09:52:12,203 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2024-11-08 09:52:12,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-08 09:52:12,207 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:52:12,207 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:52:12,226 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-08 09:52:12,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:52:12,408 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:52:12,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:52:12,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1081404920, now seen corresponding path program 1 times [2024-11-08 09:52:12,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:52:12,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339675402] [2024-11-08 09:52:12,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:52:12,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:52:12,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:12,509 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-08 09:52:12,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:12,542 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-08 09:52:12,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:12,551 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-08 09:52:12,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:12,560 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-08 09:52:12,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:52:12,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339675402] [2024-11-08 09:52:12,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339675402] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:52:12,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302695913] [2024-11-08 09:52:12,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:52:12,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:52:12,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:52:12,563 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 09:52:12,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 09:52:12,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:12,672 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 09:52:12,674 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:52:12,691 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-08 09:52:12,692 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 09:52:12,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302695913] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 09:52:12,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 09:52:12,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-08 09:52:12,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615179026] [2024-11-08 09:52:12,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 09:52:12,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 09:52:12,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:52:12,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 09:52:12,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-08 09:52:12,694 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2024-11-08 09:52:12,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:52:12,714 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2024-11-08 09:52:12,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 09:52:12,715 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 40 [2024-11-08 09:52:12,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:52:12,716 INFO L225 Difference]: With dead ends: 44 [2024-11-08 09:52:12,716 INFO L226 Difference]: Without dead ends: 29 [2024-11-08 09:52:12,716 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-08 09:52:12,717 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 1 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 09:52:12,718 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 52 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 09:52:12,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-08 09:52:12,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2024-11-08 09:52:12,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 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) [2024-11-08 09:52:12,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2024-11-08 09:52:12,728 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 40 [2024-11-08 09:52:12,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:52:12,730 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2024-11-08 09:52:12,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2024-11-08 09:52:12,730 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2024-11-08 09:52:12,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-08 09:52:12,732 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:52:12,732 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:52:12,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-08 09:52:12,933 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,SelfDestructingSolverStorable2 [2024-11-08 09:52:12,933 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:52:12,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:52:12,934 INFO L85 PathProgramCache]: Analyzing trace with hash -673301430, now seen corresponding path program 1 times [2024-11-08 09:52:12,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:52:12,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141534408] [2024-11-08 09:52:12,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:52:12,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:52:12,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:13,001 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-08 09:52:13,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:13,036 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-08 09:52:13,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:13,047 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-08 09:52:13,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:13,059 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 09:52:13,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:52:13,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141534408] [2024-11-08 09:52:13,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141534408] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:52:13,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43454247] [2024-11-08 09:52:13,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:52:13,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:52:13,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:52:13,065 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 09:52:13,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 09:52:13,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:13,148 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 09:52:13,150 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:52:13,180 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-08 09:52:13,183 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 09:52:13,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43454247] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 09:52:13,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 09:52:13,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-08 09:52:13,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532266493] [2024-11-08 09:52:13,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 09:52:13,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 09:52:13,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:52:13,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 09:52:13,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-08 09:52:13,186 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2024-11-08 09:52:13,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:52:13,200 INFO L93 Difference]: Finished difference Result 53 states and 69 transitions. [2024-11-08 09:52:13,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 09:52:13,201 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 42 [2024-11-08 09:52:13,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:52:13,203 INFO L225 Difference]: With dead ends: 53 [2024-11-08 09:52:13,204 INFO L226 Difference]: Without dead ends: 32 [2024-11-08 09:52:13,204 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-08 09:52:13,205 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 09:52:13,207 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 54 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 09:52:13,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-08 09:52:13,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-11-08 09:52:13,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 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) [2024-11-08 09:52:13,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2024-11-08 09:52:13,216 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 42 [2024-11-08 09:52:13,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:52:13,216 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2024-11-08 09:52:13,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2024-11-08 09:52:13,216 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2024-11-08 09:52:13,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-08 09:52:13,219 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:52:13,219 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:52:13,235 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 09:52:13,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:52:13,424 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:52:13,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:52:13,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1042180377, now seen corresponding path program 1 times [2024-11-08 09:52:13,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:52:13,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493375054] [2024-11-08 09:52:13,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:52:13,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:52:13,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:13,477 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-08 09:52:13,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:13,499 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-08 09:52:13,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:13,503 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-08 09:52:13,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:13,507 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 09:52:13,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:52:13,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493375054] [2024-11-08 09:52:13,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493375054] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:52:13,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128927282] [2024-11-08 09:52:13,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:52:13,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:52:13,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:52:13,510 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 09:52:13,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 09:52:13,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:13,585 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 09:52:13,586 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:52:13,617 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-08 09:52:13,618 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:52:13,666 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-08 09:52:13,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128927282] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:52:13,667 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:52:13,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2024-11-08 09:52:13,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131497275] [2024-11-08 09:52:13,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:52:13,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-08 09:52:13,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:52:13,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-08 09:52:13,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-08 09:52:13,669 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 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) [2024-11-08 09:52:13,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:52:13,715 INFO L93 Difference]: Finished difference Result 69 states and 92 transitions. [2024-11-08 09:52:13,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 09:52:13,716 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 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 42 [2024-11-08 09:52:13,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:52:13,717 INFO L225 Difference]: With dead ends: 69 [2024-11-08 09:52:13,717 INFO L226 Difference]: Without dead ends: 42 [2024-11-08 09:52:13,718 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-08 09:52:13,718 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 4 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 09:52:13,719 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 135 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 09:52:13,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-08 09:52:13,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2024-11-08 09:52:13,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 36 states have (on average 1.1944444444444444) internal successors, (43), 36 states have internal predecessors, (43), 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) [2024-11-08 09:52:13,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2024-11-08 09:52:13,724 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 42 [2024-11-08 09:52:13,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:52:13,724 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2024-11-08 09:52:13,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 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) [2024-11-08 09:52:13,725 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2024-11-08 09:52:13,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-08 09:52:13,726 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:52:13,726 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:52:13,743 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-08 09:52:13,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:52:13,931 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:52:13,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:52:13,931 INFO L85 PathProgramCache]: Analyzing trace with hash -604386836, now seen corresponding path program 2 times [2024-11-08 09:52:13,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:52:13,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583203715] [2024-11-08 09:52:13,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:52:13,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:52:13,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:13,975 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-08 09:52:13,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:13,991 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-08 09:52:13,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:13,998 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-08 09:52:14,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:14,002 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-08 09:52:14,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:52:14,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583203715] [2024-11-08 09:52:14,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583203715] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:52:14,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660816290] [2024-11-08 09:52:14,003 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 09:52:14,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:52:14,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:52:14,005 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) [2024-11-08 09:52:14,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 09:52:14,117 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 09:52:14,117 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 09:52:14,118 INFO L255 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 09:52:14,120 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:52:14,174 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-11-08 09:52:14,178 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:52:14,267 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-11-08 09:52:14,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660816290] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:52:14,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:52:14,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2024-11-08 09:52:14,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027469477] [2024-11-08 09:52:14,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:52:14,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-08 09:52:14,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:52:14,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-08 09:52:14,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-08 09:52:14,271 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 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) [2024-11-08 09:52:14,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:52:14,341 INFO L93 Difference]: Finished difference Result 86 states and 112 transitions. [2024-11-08 09:52:14,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 09:52:14,341 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 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 57 [2024-11-08 09:52:14,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:52:14,343 INFO L225 Difference]: With dead ends: 86 [2024-11-08 09:52:14,343 INFO L226 Difference]: Without dead ends: 56 [2024-11-08 09:52:14,343 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-08 09:52:14,345 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 6 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 09:52:14,347 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 88 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 09:52:14,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-08 09:52:14,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 51. [2024-11-08 09:52:14,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 46 states have (on average 1.108695652173913) internal successors, (51), 46 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) [2024-11-08 09:52:14,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2024-11-08 09:52:14,355 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 57 [2024-11-08 09:52:14,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:52:14,358 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2024-11-08 09:52:14,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 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) [2024-11-08 09:52:14,358 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2024-11-08 09:52:14,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-08 09:52:14,360 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:52:14,360 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 6, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:52:14,379 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 09:52:14,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:52:14,564 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:52:14,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:52:14,564 INFO L85 PathProgramCache]: Analyzing trace with hash 948362870, now seen corresponding path program 1 times [2024-11-08 09:52:14,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:52:14,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136945841] [2024-11-08 09:52:14,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:52:14,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:52:14,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:14,650 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-08 09:52:14,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:14,658 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-11-08 09:52:14,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:14,664 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-08 09:52:14,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:14,674 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2024-11-08 09:52:14,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:52:14,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136945841] [2024-11-08 09:52:14,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136945841] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:52:14,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656436782] [2024-11-08 09:52:14,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:52:14,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:52:14,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:52:14,677 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) [2024-11-08 09:52:14,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 09:52:14,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:14,788 INFO L255 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-08 09:52:14,791 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:52:14,929 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2024-11-08 09:52:14,929 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:52:15,200 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2024-11-08 09:52:15,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656436782] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:52:15,202 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:52:15,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 13, 13] total 26 [2024-11-08 09:52:15,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168618537] [2024-11-08 09:52:15,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:52:15,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-08 09:52:15,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:52:15,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-08 09:52:15,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=369, Unknown=0, NotChecked=0, Total=650 [2024-11-08 09:52:15,221 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand has 26 states, 26 states have (on average 3.1153846153846154) internal successors, (81), 26 states have internal predecessors, (81), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-08 09:52:15,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:52:15,337 INFO L93 Difference]: Finished difference Result 106 states and 130 transitions. [2024-11-08 09:52:15,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-08 09:52:15,338 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.1153846153846154) internal successors, (81), 26 states have internal predecessors, (81), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 78 [2024-11-08 09:52:15,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:52:15,339 INFO L225 Difference]: With dead ends: 106 [2024-11-08 09:52:15,339 INFO L226 Difference]: Without dead ends: 78 [2024-11-08 09:52:15,340 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=281, Invalid=369, Unknown=0, NotChecked=0, Total=650 [2024-11-08 09:52:15,341 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 3 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 09:52:15,341 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 162 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 09:52:15,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-08 09:52:15,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2024-11-08 09:52:15,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 72 states have (on average 1.0694444444444444) internal successors, (77), 72 states have internal predecessors, (77), 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) [2024-11-08 09:52:15,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 83 transitions. [2024-11-08 09:52:15,351 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 83 transitions. Word has length 78 [2024-11-08 09:52:15,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:52:15,351 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 83 transitions. [2024-11-08 09:52:15,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.1153846153846154) internal successors, (81), 26 states have internal predecessors, (81), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-08 09:52:15,352 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 83 transitions. [2024-11-08 09:52:15,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-08 09:52:15,353 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:52:15,353 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 9, 9, 6, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:52:15,369 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-08 09:52:15,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:52:15,554 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:52:15,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:52:15,555 INFO L85 PathProgramCache]: Analyzing trace with hash 869295696, now seen corresponding path program 2 times [2024-11-08 09:52:15,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:52:15,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943132827] [2024-11-08 09:52:15,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:52:15,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:52:15,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:16,257 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-08 09:52:16,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:16,269 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-08 09:52:16,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:16,277 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-11-08 09:52:16,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:16,284 INFO L134 CoverageAnalysis]: Checked inductivity of 638 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2024-11-08 09:52:16,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:52:16,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943132827] [2024-11-08 09:52:16,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943132827] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:52:16,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83142335] [2024-11-08 09:52:16,285 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 09:52:16,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:52:16,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:52:16,287 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) [2024-11-08 09:52:16,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 09:52:16,418 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 09:52:16,418 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 09:52:16,423 INFO L255 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-08 09:52:16,426 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:52:16,506 INFO L134 CoverageAnalysis]: Checked inductivity of 638 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2024-11-08 09:52:16,508 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:52:17,237 INFO L134 CoverageAnalysis]: Checked inductivity of 638 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2024-11-08 09:52:17,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83142335] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:52:17,237 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:52:17,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 43 [2024-11-08 09:52:17,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806243433] [2024-11-08 09:52:17,238 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:52:17,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-08 09:52:17,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:52:17,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-08 09:52:17,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2024-11-08 09:52:17,242 INFO L87 Difference]: Start difference. First operand 77 states and 83 transitions. Second operand has 43 states, 43 states have (on average 2.604651162790698) internal successors, (112), 43 states have internal predecessors, (112), 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) [2024-11-08 09:52:17,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:52:17,365 INFO L93 Difference]: Finished difference Result 143 states and 172 transitions. [2024-11-08 09:52:17,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-08 09:52:17,367 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.604651162790698) internal successors, (112), 43 states have internal predecessors, (112), 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 104 [2024-11-08 09:52:17,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:52:17,368 INFO L225 Difference]: With dead ends: 143 [2024-11-08 09:52:17,368 INFO L226 Difference]: Without dead ends: 113 [2024-11-08 09:52:17,369 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 190 SyntacticMatches, 6 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2024-11-08 09:52:17,370 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 1 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 09:52:17,370 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 153 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 09:52:17,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-08 09:52:17,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2024-11-08 09:52:17,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 108 states have (on average 1.0462962962962963) internal successors, (113), 108 states have internal predecessors, (113), 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) [2024-11-08 09:52:17,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 119 transitions. [2024-11-08 09:52:17,391 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 119 transitions. Word has length 104 [2024-11-08 09:52:17,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:52:17,392 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 119 transitions. [2024-11-08 09:52:17,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.604651162790698) internal successors, (112), 43 states have internal predecessors, (112), 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) [2024-11-08 09:52:17,392 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 119 transitions. [2024-11-08 09:52:17,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-08 09:52:17,394 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:52:17,394 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 9, 9, 6, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:52:17,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-08 09:52:17,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:52:17,595 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:52:17,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:52:17,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1918044148, now seen corresponding path program 3 times [2024-11-08 09:52:17,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:52:17,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778813848] [2024-11-08 09:52:17,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:52:17,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:52:17,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:17,753 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-08 09:52:17,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:17,778 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-11-08 09:52:17,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:17,791 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-11-08 09:52:17,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:17,798 INFO L134 CoverageAnalysis]: Checked inductivity of 1754 backedges. 5 proven. 81 refuted. 0 times theorem prover too weak. 1668 trivial. 0 not checked. [2024-11-08 09:52:17,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:52:17,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778813848] [2024-11-08 09:52:17,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778813848] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:52:17,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561775315] [2024-11-08 09:52:17,801 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 09:52:17,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:52:17,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:52:17,803 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) [2024-11-08 09:52:17,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 09:52:17,921 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-08 09:52:17,922 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 09:52:17,923 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 09:52:17,926 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:52:17,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1754 backedges. 48 proven. 2 refuted. 0 times theorem prover too weak. 1704 trivial. 0 not checked. [2024-11-08 09:52:17,968 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:52:18,037 INFO L134 CoverageAnalysis]: Checked inductivity of 1754 backedges. 48 proven. 2 refuted. 0 times theorem prover too weak. 1704 trivial. 0 not checked. [2024-11-08 09:52:18,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561775315] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:52:18,037 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:52:18,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-08 09:52:18,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545064235] [2024-11-08 09:52:18,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:52:18,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 09:52:18,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:52:18,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 09:52:18,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-11-08 09:52:18,040 INFO L87 Difference]: Start difference. First operand 113 states and 119 transitions. Second operand has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-08 09:52:18,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:52:18,081 INFO L93 Difference]: Finished difference Result 159 states and 182 transitions. [2024-11-08 09:52:18,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-08 09:52:18,081 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 2 states have call successors, (5), 1 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 140 [2024-11-08 09:52:18,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:52:18,084 INFO L225 Difference]: With dead ends: 159 [2024-11-08 09:52:18,084 INFO L226 Difference]: Without dead ends: 131 [2024-11-08 09:52:18,084 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-11-08 09:52:18,086 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 10 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 09:52:18,086 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 98 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 09:52:18,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-11-08 09:52:18,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2024-11-08 09:52:18,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 126 states have (on average 1.0714285714285714) internal successors, (135), 126 states have internal predecessors, (135), 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) [2024-11-08 09:52:18,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 141 transitions. [2024-11-08 09:52:18,100 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 141 transitions. Word has length 140 [2024-11-08 09:52:18,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:52:18,101 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 141 transitions. [2024-11-08 09:52:18,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-08 09:52:18,101 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 141 transitions. [2024-11-08 09:52:18,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2024-11-08 09:52:18,103 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:52:18,103 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 27, 27, 15, 12, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:52:18,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-08 09:52:18,307 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,SelfDestructingSolverStorable8 [2024-11-08 09:52:18,308 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:52:18,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:52:18,308 INFO L85 PathProgramCache]: Analyzing trace with hash 2009222484, now seen corresponding path program 4 times [2024-11-08 09:52:18,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:52:18,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588241666] [2024-11-08 09:52:18,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:52:18,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:52:18,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:18,547 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-08 09:52:18,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:18,592 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-11-08 09:52:18,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:18,601 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-11-08 09:52:18,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:18,611 INFO L134 CoverageAnalysis]: Checked inductivity of 2753 backedges. 65 proven. 556 refuted. 0 times theorem prover too weak. 2132 trivial. 0 not checked. [2024-11-08 09:52:18,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:52:18,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588241666] [2024-11-08 09:52:18,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588241666] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:52:18,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630855152] [2024-11-08 09:52:18,612 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 09:52:18,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:52:18,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:52:18,625 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) [2024-11-08 09:52:18,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 09:52:18,817 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 09:52:18,817 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 09:52:18,821 INFO L255 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 09:52:18,824 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:52:18,847 INFO L134 CoverageAnalysis]: Checked inductivity of 2753 backedges. 728 proven. 26 refuted. 0 times theorem prover too weak. 1999 trivial. 0 not checked. [2024-11-08 09:52:18,848 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:52:18,930 INFO L134 CoverageAnalysis]: Checked inductivity of 2753 backedges. 330 proven. 291 refuted. 0 times theorem prover too weak. 2132 trivial. 0 not checked. [2024-11-08 09:52:18,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630855152] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:52:18,930 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:52:18,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-08 09:52:18,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118038371] [2024-11-08 09:52:18,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:52:18,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-08 09:52:18,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:52:18,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-08 09:52:18,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2024-11-08 09:52:18,932 INFO L87 Difference]: Start difference. First operand 131 states and 141 transitions. Second operand has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 12 states have internal predecessors, (62), 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) [2024-11-08 09:52:18,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:52:18,974 INFO L93 Difference]: Finished difference Result 195 states and 222 transitions. [2024-11-08 09:52:18,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 09:52:18,979 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 12 states have internal predecessors, (62), 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 194 [2024-11-08 09:52:18,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:52:18,981 INFO L225 Difference]: With dead ends: 195 [2024-11-08 09:52:18,982 INFO L226 Difference]: Without dead ends: 149 [2024-11-08 09:52:18,982 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 389 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2024-11-08 09:52:18,983 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 2 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 09:52:18,983 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 75 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 09:52:18,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-11-08 09:52:18,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2024-11-08 09:52:18,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 144 states have (on average 1.0625) internal successors, (153), 144 states have internal predecessors, (153), 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) [2024-11-08 09:52:18,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 159 transitions. [2024-11-08 09:52:18,994 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 159 transitions. Word has length 194 [2024-11-08 09:52:18,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:52:18,995 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 159 transitions. [2024-11-08 09:52:18,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 12 states have internal predecessors, (62), 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) [2024-11-08 09:52:18,995 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 159 transitions. [2024-11-08 09:52:19,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2024-11-08 09:52:19,002 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:52:19,002 INFO L215 NwaCegarLoop]: trace histogram [45, 45, 40, 40, 30, 15, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:52:19,018 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-08 09:52:19,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-08 09:52:19,203 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:52:19,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:52:19,204 INFO L85 PathProgramCache]: Analyzing trace with hash 204674612, now seen corresponding path program 5 times [2024-11-08 09:52:19,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:52:19,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105639724] [2024-11-08 09:52:19,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:52:19,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:52:19,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:19,585 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-08 09:52:19,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:19,717 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-11-08 09:52:19,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:19,732 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-11-08 09:52:19,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:19,769 INFO L134 CoverageAnalysis]: Checked inductivity of 4724 backedges. 149 proven. 1573 refuted. 0 times theorem prover too weak. 3002 trivial. 0 not checked. [2024-11-08 09:52:19,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:52:19,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105639724] [2024-11-08 09:52:19,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105639724] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:52:19,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627309111] [2024-11-08 09:52:19,771 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 09:52:19,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:52:19,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:52:19,773 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) [2024-11-08 09:52:19,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 09:52:20,048 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2024-11-08 09:52:20,049 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 09:52:20,051 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 09:52:20,055 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:52:20,192 INFO L134 CoverageAnalysis]: Checked inductivity of 4724 backedges. 1578 proven. 40 refuted. 0 times theorem prover too weak. 3106 trivial. 0 not checked. [2024-11-08 09:52:20,193 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:52:20,375 INFO L134 CoverageAnalysis]: Checked inductivity of 4724 backedges. 164 proven. 568 refuted. 0 times theorem prover too weak. 3992 trivial. 0 not checked. [2024-11-08 09:52:20,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627309111] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:52:20,376 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:52:20,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 27 [2024-11-08 09:52:20,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791371469] [2024-11-08 09:52:20,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:52:20,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-08 09:52:20,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:52:20,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-08 09:52:20,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2024-11-08 09:52:20,379 INFO L87 Difference]: Start difference. First operand 149 states and 159 transitions. Second operand has 27 states, 27 states have (on average 3.7037037037037037) internal successors, (100), 27 states have internal predecessors, (100), 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) [2024-11-08 09:52:20,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:52:20,475 INFO L93 Difference]: Finished difference Result 243 states and 282 transitions. [2024-11-08 09:52:20,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-08 09:52:20,475 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.7037037037037037) internal successors, (100), 27 states have internal predecessors, (100), 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 248 [2024-11-08 09:52:20,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:52:20,477 INFO L225 Difference]: With dead ends: 243 [2024-11-08 09:52:20,477 INFO L226 Difference]: Without dead ends: 179 [2024-11-08 09:52:20,478 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 488 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2024-11-08 09:52:20,478 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 10 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 09:52:20,479 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 122 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 09:52:20,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-11-08 09:52:20,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2024-11-08 09:52:20,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 174 states have (on average 1.0977011494252873) internal successors, (191), 174 states have internal predecessors, (191), 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) [2024-11-08 09:52:20,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 197 transitions. [2024-11-08 09:52:20,491 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 197 transitions. Word has length 248 [2024-11-08 09:52:20,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:52:20,491 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 197 transitions. [2024-11-08 09:52:20,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.7037037037037037) internal successors, (100), 27 states have internal predecessors, (100), 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) [2024-11-08 09:52:20,492 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 197 transitions. [2024-11-08 09:52:20,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2024-11-08 09:52:20,497 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:52:20,497 INFO L215 NwaCegarLoop]: trace histogram [75, 75, 40, 40, 39, 36, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:52:20,516 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-08 09:52:20,698 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,SelfDestructingSolverStorable10 [2024-11-08 09:52:20,698 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:52:20,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:52:20,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1512062124, now seen corresponding path program 6 times [2024-11-08 09:52:20,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:52:20,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683738767] [2024-11-08 09:52:20,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:52:20,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:52:20,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:21,141 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-08 09:52:21,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:21,357 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-11-08 09:52:21,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:21,376 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2024-11-08 09:52:21,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:21,396 INFO L134 CoverageAnalysis]: Checked inductivity of 10169 backedges. 481 proven. 4080 refuted. 0 times theorem prover too weak. 5608 trivial. 0 not checked. [2024-11-08 09:52:21,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:52:21,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683738767] [2024-11-08 09:52:21,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683738767] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:52:21,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546246662] [2024-11-08 09:52:21,397 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 09:52:21,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:52:21,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:52:21,399 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) [2024-11-08 09:52:21,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-08 09:52:21,575 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-08 09:52:21,575 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 09:52:21,577 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 09:52:21,581 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:52:21,627 INFO L134 CoverageAnalysis]: Checked inductivity of 10169 backedges. 3860 proven. 4 refuted. 0 times theorem prover too weak. 6305 trivial. 0 not checked. [2024-11-08 09:52:21,628 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:52:21,689 INFO L134 CoverageAnalysis]: Checked inductivity of 10169 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10165 trivial. 0 not checked. [2024-11-08 09:52:21,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546246662] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:52:21,690 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:52:21,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5] total 21 [2024-11-08 09:52:21,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910273117] [2024-11-08 09:52:21,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:52:21,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-08 09:52:21,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:52:21,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-08 09:52:21,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=288, Unknown=0, NotChecked=0, Total=420 [2024-11-08 09:52:21,692 INFO L87 Difference]: Start difference. First operand 179 states and 197 transitions. Second operand has 21 states, 21 states have (on average 3.9523809523809526) internal successors, (83), 21 states have internal predecessors, (83), 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) [2024-11-08 09:52:21,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:52:21,773 INFO L93 Difference]: Finished difference Result 285 states and 327 transitions. [2024-11-08 09:52:21,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-08 09:52:21,774 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.9523809523809526) internal successors, (83), 21 states have internal predecessors, (83), 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 338 [2024-11-08 09:52:21,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:52:21,776 INFO L225 Difference]: With dead ends: 285 [2024-11-08 09:52:21,777 INFO L226 Difference]: Without dead ends: 191 [2024-11-08 09:52:21,778 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 695 GetRequests, 676 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=132, Invalid=288, Unknown=0, NotChecked=0, Total=420 [2024-11-08 09:52:21,778 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 3 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 09:52:21,778 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 197 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 09:52:21,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2024-11-08 09:52:21,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 190. [2024-11-08 09:52:21,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 185 states have (on average 1.0918918918918918) internal successors, (202), 185 states have internal predecessors, (202), 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) [2024-11-08 09:52:21,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 208 transitions. [2024-11-08 09:52:21,787 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 208 transitions. Word has length 338 [2024-11-08 09:52:21,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:52:21,787 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 208 transitions. [2024-11-08 09:52:21,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.9523809523809526) internal successors, (83), 21 states have internal predecessors, (83), 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) [2024-11-08 09:52:21,787 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 208 transitions. [2024-11-08 09:52:21,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2024-11-08 09:52:21,789 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:52:21,790 INFO L215 NwaCegarLoop]: trace histogram [78, 78, 40, 40, 39, 39, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:52:21,805 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-08 09:52:21,990 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,SelfDestructingSolverStorable11 [2024-11-08 09:52:21,990 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:52:21,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:52:21,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1305102617, now seen corresponding path program 7 times [2024-11-08 09:52:21,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:52:21,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773622783] [2024-11-08 09:52:21,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:52:21,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:52:22,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:22,467 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-08 09:52:22,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:22,663 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-11-08 09:52:22,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:22,680 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2024-11-08 09:52:22,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:22,699 INFO L134 CoverageAnalysis]: Checked inductivity of 10894 backedges. 519 proven. 4428 refuted. 0 times theorem prover too weak. 5947 trivial. 0 not checked. [2024-11-08 09:52:22,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:52:22,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773622783] [2024-11-08 09:52:22,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773622783] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:52:22,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726253948] [2024-11-08 09:52:22,700 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 09:52:22,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:52:22,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:52:22,702 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) [2024-11-08 09:52:22,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-08 09:52:22,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:22,973 INFO L255 TraceCheckSpWp]: Trace formula consists of 1011 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-08 09:52:22,978 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:52:23,055 INFO L134 CoverageAnalysis]: Checked inductivity of 10894 backedges. 2681 proven. 260 refuted. 0 times theorem prover too weak. 7953 trivial. 0 not checked. [2024-11-08 09:52:23,056 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:52:23,315 INFO L134 CoverageAnalysis]: Checked inductivity of 10894 backedges. 519 proven. 4428 refuted. 0 times theorem prover too weak. 5947 trivial. 0 not checked. [2024-11-08 09:52:23,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726253948] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:52:23,316 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:52:23,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 23 [2024-11-08 09:52:23,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673113121] [2024-11-08 09:52:23,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:52:23,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-08 09:52:23,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:52:23,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-08 09:52:23,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2024-11-08 09:52:23,318 INFO L87 Difference]: Start difference. First operand 190 states and 208 transitions. Second operand has 23 states, 23 states have (on average 4.173913043478261) internal successors, (96), 23 states have internal predecessors, (96), 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) [2024-11-08 09:52:23,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:52:23,395 INFO L93 Difference]: Finished difference Result 319 states and 364 transitions. [2024-11-08 09:52:23,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-08 09:52:23,396 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.173913043478261) internal successors, (96), 23 states have internal predecessors, (96), 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 355 [2024-11-08 09:52:23,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:52:23,397 INFO L225 Difference]: With dead ends: 319 [2024-11-08 09:52:23,397 INFO L226 Difference]: Without dead ends: 214 [2024-11-08 09:52:23,398 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 730 GetRequests, 702 SyntacticMatches, 7 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2024-11-08 09:52:23,399 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 1 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 09:52:23,399 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 123 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 09:52:23,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2024-11-08 09:52:23,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2024-11-08 09:52:23,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 209 states have (on average 1.0813397129186604) internal successors, (226), 209 states have internal predecessors, (226), 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) [2024-11-08 09:52:23,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 232 transitions. [2024-11-08 09:52:23,408 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 232 transitions. Word has length 355 [2024-11-08 09:52:23,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:52:23,409 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 232 transitions. [2024-11-08 09:52:23,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.173913043478261) internal successors, (96), 23 states have internal predecessors, (96), 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) [2024-11-08 09:52:23,409 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 232 transitions. [2024-11-08 09:52:23,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2024-11-08 09:52:23,411 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:52:23,411 INFO L215 NwaCegarLoop]: trace histogram [102, 102, 63, 40, 40, 39, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:52:23,430 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-08 09:52:23,615 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,SelfDestructingSolverStorable12 [2024-11-08 09:52:23,616 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:52:23,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:52:23,617 INFO L85 PathProgramCache]: Analyzing trace with hash 2038223513, now seen corresponding path program 8 times [2024-11-08 09:52:23,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:52:23,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265183351] [2024-11-08 09:52:23,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:52:23,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:52:23,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:24,020 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-08 09:52:24,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:24,034 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-11-08 09:52:24,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:24,049 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2024-11-08 09:52:24,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:24,068 INFO L134 CoverageAnalysis]: Checked inductivity of 17410 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 17374 trivial. 0 not checked. [2024-11-08 09:52:24,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:52:24,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265183351] [2024-11-08 09:52:24,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265183351] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:52:24,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21781784] [2024-11-08 09:52:24,069 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 09:52:24,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:52:24,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:52:24,071 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) [2024-11-08 09:52:24,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-08 09:52:24,374 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 09:52:24,375 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 09:52:24,380 INFO L255 TraceCheckSpWp]: Trace formula consists of 1107 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-08 09:52:24,386 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:52:25,113 INFO L134 CoverageAnalysis]: Checked inductivity of 17410 backedges. 7076 proven. 1717 refuted. 0 times theorem prover too weak. 8617 trivial. 0 not checked. [2024-11-08 09:52:25,113 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:52:25,991 INFO L134 CoverageAnalysis]: Checked inductivity of 17410 backedges. 0 proven. 8797 refuted. 0 times theorem prover too weak. 8613 trivial. 0 not checked. [2024-11-08 09:52:25,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21781784] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:52:25,992 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:52:25,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 37, 37] total 49 [2024-11-08 09:52:25,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339830366] [2024-11-08 09:52:25,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:52:25,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-08 09:52:25,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:52:25,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-08 09:52:25,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=896, Invalid=1456, Unknown=0, NotChecked=0, Total=2352 [2024-11-08 09:52:25,996 INFO L87 Difference]: Start difference. First operand 214 states and 232 transitions. Second operand has 49 states, 49 states have (on average 3.510204081632653) internal successors, (172), 49 states have internal predecessors, (172), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-08 09:52:26,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:52:26,210 INFO L93 Difference]: Finished difference Result 364 states and 414 transitions. [2024-11-08 09:52:26,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-08 09:52:26,211 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 3.510204081632653) internal successors, (172), 49 states have internal predecessors, (172), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 427 [2024-11-08 09:52:26,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:52:26,213 INFO L225 Difference]: With dead ends: 364 [2024-11-08 09:52:26,213 INFO L226 Difference]: Without dead ends: 235 [2024-11-08 09:52:26,214 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 867 GetRequests, 790 SyntacticMatches, 30 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1005 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=896, Invalid=1456, Unknown=0, NotChecked=0, Total=2352 [2024-11-08 09:52:26,214 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 23 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 09:52:26,215 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 130 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 09:52:26,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2024-11-08 09:52:26,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 234. [2024-11-08 09:52:26,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 229 states have (on average 1.1004366812227073) internal successors, (252), 229 states have internal predecessors, (252), 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) [2024-11-08 09:52:26,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 258 transitions. [2024-11-08 09:52:26,225 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 258 transitions. Word has length 427 [2024-11-08 09:52:26,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:52:26,226 INFO L471 AbstractCegarLoop]: Abstraction has 234 states and 258 transitions. [2024-11-08 09:52:26,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 3.510204081632653) internal successors, (172), 49 states have internal predecessors, (172), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-08 09:52:26,226 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 258 transitions. [2024-11-08 09:52:26,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2024-11-08 09:52:26,228 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:52:26,229 INFO L215 NwaCegarLoop]: trace histogram [120, 120, 63, 57, 40, 40, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:52:26,247 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-08 09:52:26,432 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,SelfDestructingSolverStorable13 [2024-11-08 09:52:26,433 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:52:26,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:52:26,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1066486921, now seen corresponding path program 9 times [2024-11-08 09:52:26,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:52:26,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027054886] [2024-11-08 09:52:26,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:52:26,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:52:26,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:26,891 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-08 09:52:26,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:26,908 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-11-08 09:52:26,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:26,926 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2024-11-08 09:52:26,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:26,949 INFO L134 CoverageAnalysis]: Checked inductivity of 23444 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 23395 trivial. 0 not checked. [2024-11-08 09:52:26,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:52:26,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027054886] [2024-11-08 09:52:26,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027054886] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:52:26,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827881903] [2024-11-08 09:52:26,950 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 09:52:26,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:52:26,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:52:26,952 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) [2024-11-08 09:52:26,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-08 09:52:27,304 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-08 09:52:27,305 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 09:52:27,307 INFO L255 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-08 09:52:27,312 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:52:27,348 INFO L134 CoverageAnalysis]: Checked inductivity of 23444 backedges. 9770 proven. 49 refuted. 0 times theorem prover too weak. 13625 trivial. 0 not checked. [2024-11-08 09:52:27,349 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:52:27,499 INFO L134 CoverageAnalysis]: Checked inductivity of 23444 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 23395 trivial. 0 not checked. [2024-11-08 09:52:27,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827881903] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:52:27,502 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:52:27,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2024-11-08 09:52:27,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507973037] [2024-11-08 09:52:27,502 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:52:27,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-08 09:52:27,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:52:27,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-08 09:52:27,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2024-11-08 09:52:27,506 INFO L87 Difference]: Start difference. First operand 234 states and 258 transitions. Second operand has 19 states, 19 states have (on average 3.263157894736842) internal successors, (62), 19 states have internal predecessors, (62), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 09:52:27,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:52:27,563 INFO L93 Difference]: Finished difference Result 383 states and 436 transitions. [2024-11-08 09:52:27,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-08 09:52:27,563 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.263157894736842) internal successors, (62), 19 states have internal predecessors, (62), 2 states have call successors, (4), 2 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 483 [2024-11-08 09:52:27,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:52:27,565 INFO L225 Difference]: With dead ends: 383 [2024-11-08 09:52:27,565 INFO L226 Difference]: Without dead ends: 252 [2024-11-08 09:52:27,566 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 980 GetRequests, 963 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2024-11-08 09:52:27,566 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 2 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 09:52:27,567 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 172 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 09:52:27,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2024-11-08 09:52:27,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2024-11-08 09:52:27,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 247 states have (on average 1.0931174089068827) internal successors, (270), 247 states have internal predecessors, (270), 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) [2024-11-08 09:52:27,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 276 transitions. [2024-11-08 09:52:27,577 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 276 transitions. Word has length 483 [2024-11-08 09:52:27,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:52:27,578 INFO L471 AbstractCegarLoop]: Abstraction has 252 states and 276 transitions. [2024-11-08 09:52:27,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.263157894736842) internal successors, (62), 19 states have internal predecessors, (62), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 09:52:27,578 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 276 transitions. [2024-11-08 09:52:27,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2024-11-08 09:52:27,581 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:52:27,582 INFO L215 NwaCegarLoop]: trace histogram [120, 120, 63, 57, 40, 40, 16, 16, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:52:27,603 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-08 09:52:27,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:52:27,783 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:52:27,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:52:27,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1157301915, now seen corresponding path program 10 times [2024-11-08 09:52:27,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:52:27,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090113523] [2024-11-08 09:52:27,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:52:27,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:52:27,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:28,544 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-08 09:52:28,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:28,562 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-11-08 09:52:28,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:28,579 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2024-11-08 09:52:28,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:28,601 INFO L134 CoverageAnalysis]: Checked inductivity of 23651 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 23395 trivial. 0 not checked. [2024-11-08 09:52:28,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:52:28,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090113523] [2024-11-08 09:52:28,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090113523] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:52:28,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302917155] [2024-11-08 09:52:28,602 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 09:52:28,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:52:28,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:52:28,604 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) [2024-11-08 09:52:28,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-08 09:52:28,956 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 09:52:28,956 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 09:52:28,961 INFO L255 TraceCheckSpWp]: Trace formula consists of 1321 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-08 09:52:28,965 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:52:29,033 INFO L134 CoverageAnalysis]: Checked inductivity of 23651 backedges. 9770 proven. 256 refuted. 0 times theorem prover too weak. 13625 trivial. 0 not checked. [2024-11-08 09:52:29,034 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:52:29,443 INFO L134 CoverageAnalysis]: Checked inductivity of 23651 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 23395 trivial. 0 not checked. [2024-11-08 09:52:29,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302917155] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:52:29,444 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:52:29,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 37 [2024-11-08 09:52:29,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92454922] [2024-11-08 09:52:29,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:52:29,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-08 09:52:29,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:52:29,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-08 09:52:29,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2024-11-08 09:52:29,446 INFO L87 Difference]: Start difference. First operand 252 states and 276 transitions. Second operand has 37 states, 37 states have (on average 2.6486486486486487) internal successors, (98), 37 states have internal predecessors, (98), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 09:52:29,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:52:29,539 INFO L93 Difference]: Finished difference Result 419 states and 481 transitions. [2024-11-08 09:52:29,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-08 09:52:29,540 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.6486486486486487) internal successors, (98), 37 states have internal predecessors, (98), 2 states have call successors, (4), 2 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 501 [2024-11-08 09:52:29,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:52:29,542 INFO L225 Difference]: With dead ends: 419 [2024-11-08 09:52:29,542 INFO L226 Difference]: Without dead ends: 288 [2024-11-08 09:52:29,543 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1025 GetRequests, 990 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2024-11-08 09:52:29,544 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 2 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 09:52:29,545 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 76 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 09:52:29,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2024-11-08 09:52:29,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2024-11-08 09:52:29,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 283 states have (on average 1.0812720848056536) internal successors, (306), 283 states have internal predecessors, (306), 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) [2024-11-08 09:52:29,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 312 transitions. [2024-11-08 09:52:29,554 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 312 transitions. Word has length 501 [2024-11-08 09:52:29,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:52:29,555 INFO L471 AbstractCegarLoop]: Abstraction has 288 states and 312 transitions. [2024-11-08 09:52:29,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.6486486486486487) internal successors, (98), 37 states have internal predecessors, (98), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 09:52:29,555 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 312 transitions. [2024-11-08 09:52:29,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 538 [2024-11-08 09:52:29,558 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:52:29,558 INFO L215 NwaCegarLoop]: trace histogram [120, 120, 63, 57, 40, 40, 34, 34, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:52:29,578 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-08 09:52:29,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-08 09:52:29,759 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:52:29,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:52:29,759 INFO L85 PathProgramCache]: Analyzing trace with hash 108611265, now seen corresponding path program 11 times [2024-11-08 09:52:29,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:52:29,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858131256] [2024-11-08 09:52:29,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:52:29,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:52:29,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:31,431 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-08 09:52:31,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:31,450 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-11-08 09:52:31,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:31,482 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2024-11-08 09:52:31,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:31,504 INFO L134 CoverageAnalysis]: Checked inductivity of 24551 backedges. 0 proven. 1156 refuted. 0 times theorem prover too weak. 23395 trivial. 0 not checked. [2024-11-08 09:52:31,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:52:31,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858131256] [2024-11-08 09:52:31,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858131256] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:52:31,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049778361] [2024-11-08 09:52:31,505 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 09:52:31,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:52:31,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:52:31,507 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 09:52:31,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process