./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-multidimensional/max-2-u.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-multidimensional/max-2-u.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 d56d1653edfb1a7b1c72e82d390b1b74d1df9114797a2f1426eb2285f6c4408f --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-10 22:11:25,151 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-10 22:11:25,219 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-10 22:11:25,225 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-10 22:11:25,225 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-10 22:11:25,246 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-10 22:11:25,247 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-10 22:11:25,247 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-10 22:11:25,247 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-10 22:11:25,248 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-10 22:11:25,248 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-10 22:11:25,248 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-10 22:11:25,248 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-10 22:11:25,249 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-10 22:11:25,249 INFO L153 SettingsManager]: * Use SBE=true [2024-10-10 22:11:25,249 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-10 22:11:25,249 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-10 22:11:25,249 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-10 22:11:25,250 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-10 22:11:25,250 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-10 22:11:25,250 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-10 22:11:25,251 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-10 22:11:25,251 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-10 22:11:25,251 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-10 22:11:25,251 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-10 22:11:25,251 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-10 22:11:25,252 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-10 22:11:25,252 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-10 22:11:25,252 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-10 22:11:25,252 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-10 22:11:25,253 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-10 22:11:25,253 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-10 22:11:25,253 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 22:11:25,253 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-10 22:11:25,254 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-10 22:11:25,254 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-10 22:11:25,254 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-10 22:11:25,254 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-10 22:11:25,254 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-10 22:11:25,255 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-10 22:11:25,255 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-10 22:11:25,258 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-10 22:11:25,258 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d56d1653edfb1a7b1c72e82d390b1b74d1df9114797a2f1426eb2285f6c4408f [2024-10-10 22:11:25,438 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-10 22:11:25,455 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-10 22:11:25,458 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-10 22:11:25,459 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-10 22:11:25,459 INFO L274 PluginConnector]: CDTParser initialized [2024-10-10 22:11:25,460 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-multidimensional/max-2-u.c [2024-10-10 22:11:26,703 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-10 22:11:26,834 INFO L384 CDTParser]: Found 1 translation units. [2024-10-10 22:11:26,834 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-multidimensional/max-2-u.c [2024-10-10 22:11:26,840 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/ea0c1e0ec/71333203d0d84ba49a464a094ba878dd/FLAGa129ed333 [2024-10-10 22:11:26,850 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/ea0c1e0ec/71333203d0d84ba49a464a094ba878dd [2024-10-10 22:11:26,852 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-10 22:11:26,853 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-10 22:11:26,853 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-10 22:11:26,853 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-10 22:11:26,861 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-10 22:11:26,861 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 10:11:26" (1/1) ... [2024-10-10 22:11:26,862 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@558e0f87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:11:26, skipping insertion in model container [2024-10-10 22:11:26,862 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 10:11:26" (1/1) ... [2024-10-10 22:11:26,876 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-10 22:11:27,005 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-multidimensional/max-2-u.c[319,332] [2024-10-10 22:11:27,023 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 22:11:27,031 INFO L200 MainTranslator]: Completed pre-run [2024-10-10 22:11:27,045 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-multidimensional/max-2-u.c[319,332] [2024-10-10 22:11:27,056 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 22:11:27,069 INFO L204 MainTranslator]: Completed translation [2024-10-10 22:11:27,069 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:11:27 WrapperNode [2024-10-10 22:11:27,070 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-10 22:11:27,070 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-10 22:11:27,071 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-10 22:11:27,071 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-10 22:11:27,076 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:11:27" (1/1) ... [2024-10-10 22:11:27,081 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:11:27" (1/1) ... [2024-10-10 22:11:27,101 INFO L138 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 83 [2024-10-10 22:11:27,101 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-10 22:11:27,102 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-10 22:11:27,102 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-10 22:11:27,102 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-10 22:11:27,110 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:11:27" (1/1) ... [2024-10-10 22:11:27,110 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:11:27" (1/1) ... [2024-10-10 22:11:27,112 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:11:27" (1/1) ... [2024-10-10 22:11:27,121 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-10-10 22:11:27,121 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:11:27" (1/1) ... [2024-10-10 22:11:27,121 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:11:27" (1/1) ... [2024-10-10 22:11:27,141 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:11:27" (1/1) ... [2024-10-10 22:11:27,147 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:11:27" (1/1) ... [2024-10-10 22:11:27,148 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:11:27" (1/1) ... [2024-10-10 22:11:27,155 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:11:27" (1/1) ... [2024-10-10 22:11:27,156 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-10 22:11:27,157 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-10 22:11:27,157 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-10 22:11:27,157 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-10 22:11:27,158 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:11:27" (1/1) ... [2024-10-10 22:11:27,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 22:11:27,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:11:27,206 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-10 22:11:27,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-10 22:11:27,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-10 22:11:27,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-10 22:11:27,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-10 22:11:27,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-10 22:11:27,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-10 22:11:27,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-10 22:11:27,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-10 22:11:27,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-10 22:11:27,241 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-10 22:11:27,241 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-10 22:11:27,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-10 22:11:27,295 INFO L238 CfgBuilder]: Building ICFG [2024-10-10 22:11:27,297 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-10 22:11:27,416 INFO L? ?]: Removed 17 outVars from TransFormulas that were not future-live. [2024-10-10 22:11:27,416 INFO L287 CfgBuilder]: Performing block encoding [2024-10-10 22:11:27,433 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-10 22:11:27,433 INFO L314 CfgBuilder]: Removed 6 assume(true) statements. [2024-10-10 22:11:27,434 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 10:11:27 BoogieIcfgContainer [2024-10-10 22:11:27,434 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-10 22:11:27,435 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-10 22:11:27,436 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-10 22:11:27,438 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-10 22:11:27,438 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.10 10:11:26" (1/3) ... [2024-10-10 22:11:27,439 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@650e45e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 10:11:27, skipping insertion in model container [2024-10-10 22:11:27,439 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:11:27" (2/3) ... [2024-10-10 22:11:27,439 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@650e45e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 10:11:27, skipping insertion in model container [2024-10-10 22:11:27,439 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 10:11:27" (3/3) ... [2024-10-10 22:11:27,440 INFO L112 eAbstractionObserver]: Analyzing ICFG max-2-u.c [2024-10-10 22:11:27,452 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-10 22:11:27,454 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-10 22:11:27,495 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-10 22:11:27,500 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;@1955ddda, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-10 22:11:27,500 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-10 22:11:27,503 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 19 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:11:27,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-10 22:11:27,508 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:11:27,508 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:11:27,509 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:11:27,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:11:27,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1260479934, now seen corresponding path program 1 times [2024-10-10 22:11:27,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:11:27,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049474457] [2024-10-10 22:11:27,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:11:27,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:11:27,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:11:27,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:11:27,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:11:27,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049474457] [2024-10-10 22:11:27,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049474457] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:11:27,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:11:27,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 22:11:27,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647376266] [2024-10-10 22:11:27,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:11:27,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:11:27,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:11:27,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:11:27,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:11:27,738 INFO L87 Difference]: Start difference. First operand has 20 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 19 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:11:27,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:11:27,783 INFO L93 Difference]: Finished difference Result 42 states and 72 transitions. [2024-10-10 22:11:27,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:11:27,786 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-10-10 22:11:27,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:11:27,791 INFO L225 Difference]: With dead ends: 42 [2024-10-10 22:11:27,791 INFO L226 Difference]: Without dead ends: 21 [2024-10-10 22:11:27,793 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:11:27,795 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 3 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 22:11:27,796 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 30 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 22:11:27,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-10-10 22:11:27,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2024-10-10 22:11:27,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 18 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:11:27,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2024-10-10 22:11:27,820 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 25 transitions. Word has length 9 [2024-10-10 22:11:27,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:11:27,821 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 25 transitions. [2024-10-10 22:11:27,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:11:27,821 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 25 transitions. [2024-10-10 22:11:27,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-10-10 22:11:27,821 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:11:27,821 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:11:27,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-10 22:11:27,822 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:11:27,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:11:27,822 INFO L85 PathProgramCache]: Analyzing trace with hash 800318851, now seen corresponding path program 1 times [2024-10-10 22:11:27,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:11:27,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001179287] [2024-10-10 22:11:27,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:11:27,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:11:27,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:11:27,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:11:27,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:11:27,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001179287] [2024-10-10 22:11:27,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001179287] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:11:27,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:11:27,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 22:11:27,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635743678] [2024-10-10 22:11:27,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:11:27,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 22:11:27,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:11:27,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 22:11:27,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-10 22:11:27,917 INFO L87 Difference]: Start difference. First operand 19 states and 25 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:11:27,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:11:27,952 INFO L93 Difference]: Finished difference Result 45 states and 61 transitions. [2024-10-10 22:11:27,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 22:11:27,953 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-10-10 22:11:27,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:11:27,953 INFO L225 Difference]: With dead ends: 45 [2024-10-10 22:11:27,953 INFO L226 Difference]: Without dead ends: 28 [2024-10-10 22:11:27,954 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-10 22:11:27,955 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 30 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 22:11:27,955 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 21 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 22:11:27,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-10-10 22:11:27,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 22. [2024-10-10 22:11:27,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 21 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:11:27,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 28 transitions. [2024-10-10 22:11:27,961 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 28 transitions. Word has length 12 [2024-10-10 22:11:27,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:11:27,961 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 28 transitions. [2024-10-10 22:11:27,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:11:27,961 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 28 transitions. [2024-10-10 22:11:27,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-10-10 22:11:27,961 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:11:27,961 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:11:27,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-10 22:11:27,962 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:11:27,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:11:27,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1845944019, now seen corresponding path program 1 times [2024-10-10 22:11:27,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:11:27,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479628875] [2024-10-10 22:11:27,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:11:27,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:11:27,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:11:28,038 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-10 22:11:28,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:11:28,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479628875] [2024-10-10 22:11:28,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479628875] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:11:28,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:11:28,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 22:11:28,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552554421] [2024-10-10 22:11:28,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:11:28,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 22:11:28,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:11:28,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 22:11:28,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-10 22:11:28,042 INFO L87 Difference]: Start difference. First operand 22 states and 28 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:11:28,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:11:28,099 INFO L93 Difference]: Finished difference Result 48 states and 60 transitions. [2024-10-10 22:11:28,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 22:11:28,101 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-10-10 22:11:28,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:11:28,101 INFO L225 Difference]: With dead ends: 48 [2024-10-10 22:11:28,101 INFO L226 Difference]: Without dead ends: 39 [2024-10-10 22:11:28,102 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-10 22:11:28,102 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 34 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 22:11:28,103 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 15 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 22:11:28,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-10-10 22:11:28,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 23. [2024-10-10 22:11:28,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 22 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:11:28,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 29 transitions. [2024-10-10 22:11:28,112 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 29 transitions. Word has length 13 [2024-10-10 22:11:28,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:11:28,113 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 29 transitions. [2024-10-10 22:11:28,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:11:28,113 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 29 transitions. [2024-10-10 22:11:28,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-10-10 22:11:28,114 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:11:28,114 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:11:28,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-10 22:11:28,115 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:11:28,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:11:28,117 INFO L85 PathProgramCache]: Analyzing trace with hash -371629433, now seen corresponding path program 1 times [2024-10-10 22:11:28,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:11:28,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376512297] [2024-10-10 22:11:28,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:11:28,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:11:28,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:11:28,221 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-10 22:11:28,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:11:28,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376512297] [2024-10-10 22:11:28,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376512297] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:11:28,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960726716] [2024-10-10 22:11:28,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:11:28,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:11:28,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:11:28,224 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:11:28,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-10 22:11:28,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:11:28,293 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-10 22:11:28,297 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:11:28,348 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-10 22:11:28,350 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:11:28,376 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-10 22:11:28,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960726716] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:11:28,376 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:11:28,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-10-10 22:11:28,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936805329] [2024-10-10 22:11:28,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:11:28,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-10 22:11:28,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:11:28,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-10 22:11:28,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-10-10 22:11:28,379 INFO L87 Difference]: Start difference. First operand 23 states and 29 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:11:28,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:11:28,488 INFO L93 Difference]: Finished difference Result 71 states and 95 transitions. [2024-10-10 22:11:28,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-10 22:11:28,491 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-10-10 22:11:28,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:11:28,492 INFO L225 Difference]: With dead ends: 71 [2024-10-10 22:11:28,492 INFO L226 Difference]: Without dead ends: 50 [2024-10-10 22:11:28,492 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2024-10-10 22:11:28,493 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 71 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 22:11:28,493 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 49 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 22:11:28,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-10-10 22:11:28,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 44. [2024-10-10 22:11:28,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.302325581395349) internal successors, (56), 43 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:11:28,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 56 transitions. [2024-10-10 22:11:28,500 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 56 transitions. Word has length 19 [2024-10-10 22:11:28,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:11:28,500 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 56 transitions. [2024-10-10 22:11:28,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:11:28,501 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 56 transitions. [2024-10-10 22:11:28,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-10-10 22:11:28,501 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:11:28,501 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:11:28,514 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-10 22:11:28,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:11:28,703 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:11:28,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:11:28,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1826388551, now seen corresponding path program 2 times [2024-10-10 22:11:28,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:11:28,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423155924] [2024-10-10 22:11:28,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:11:28,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:11:28,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:11:28,871 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-10-10 22:11:28,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:11:28,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423155924] [2024-10-10 22:11:28,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423155924] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:11:28,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658362959] [2024-10-10 22:11:28,875 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-10 22:11:28,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:11:28,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:11:28,876 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:11:28,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-10 22:11:28,938 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-10 22:11:28,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:11:28,940 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-10 22:11:28,941 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:11:29,008 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-10-10 22:11:29,009 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:11:29,081 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-10-10 22:11:29,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [658362959] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:11:29,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:11:29,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2024-10-10 22:11:29,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542504878] [2024-10-10 22:11:29,082 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:11:29,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-10 22:11:29,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:11:29,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-10 22:11:29,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=195, Unknown=0, NotChecked=0, Total=342 [2024-10-10 22:11:29,083 INFO L87 Difference]: Start difference. First operand 44 states and 56 transitions. Second operand has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 18 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:11:29,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:11:29,280 INFO L93 Difference]: Finished difference Result 146 states and 191 transitions. [2024-10-10 22:11:29,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-10 22:11:29,280 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 18 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2024-10-10 22:11:29,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:11:29,281 INFO L225 Difference]: With dead ends: 146 [2024-10-10 22:11:29,281 INFO L226 Difference]: Without dead ends: 104 [2024-10-10 22:11:29,282 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=222, Invalid=330, Unknown=0, NotChecked=0, Total=552 [2024-10-10 22:11:29,282 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 227 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 22:11:29,282 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 77 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 22:11:29,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-10-10 22:11:29,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 86. [2024-10-10 22:11:29,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.2941176470588236) internal successors, (110), 85 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:11:29,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 110 transitions. [2024-10-10 22:11:29,301 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 110 transitions. Word has length 31 [2024-10-10 22:11:29,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:11:29,301 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 110 transitions. [2024-10-10 22:11:29,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 18 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:11:29,302 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 110 transitions. [2024-10-10 22:11:29,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-10 22:11:29,303 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:11:29,303 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:11:29,315 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-10 22:11:29,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:11:29,505 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:11:29,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:11:29,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1010214521, now seen corresponding path program 3 times [2024-10-10 22:11:29,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:11:29,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251909823] [2024-10-10 22:11:29,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:11:29,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:11:29,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:11:29,744 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 1 proven. 55 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2024-10-10 22:11:29,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:11:29,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251909823] [2024-10-10 22:11:29,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251909823] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:11:29,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437760954] [2024-10-10 22:11:29,745 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-10 22:11:29,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:11:29,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:11:29,746 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:11:29,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-10 22:11:29,795 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-10 22:11:29,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:11:29,796 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-10 22:11:29,798 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:11:29,950 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2024-10-10 22:11:29,950 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:11:30,040 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2024-10-10 22:11:30,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437760954] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:11:30,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:11:30,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 4, 4] total 18 [2024-10-10 22:11:30,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587973015] [2024-10-10 22:11:30,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:11:30,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-10 22:11:30,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:11:30,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-10 22:11:30,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2024-10-10 22:11:30,042 INFO L87 Difference]: Start difference. First operand 86 states and 110 transitions. Second operand has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 18 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:11:31,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:11:31,217 INFO L93 Difference]: Finished difference Result 559 states and 665 transitions. [2024-10-10 22:11:31,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-10-10 22:11:31,218 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 18 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-10-10 22:11:31,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:11:31,221 INFO L225 Difference]: With dead ends: 559 [2024-10-10 22:11:31,221 INFO L226 Difference]: Without dead ends: 475 [2024-10-10 22:11:31,223 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1695 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1772, Invalid=3778, Unknown=0, NotChecked=0, Total=5550 [2024-10-10 22:11:31,223 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 1558 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1558 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-10 22:11:31,223 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1558 Valid, 68 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-10 22:11:31,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2024-10-10 22:11:31,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 201. [2024-10-10 22:11:31,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 200 states have (on average 1.315) internal successors, (263), 200 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:11:31,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 263 transitions. [2024-10-10 22:11:31,242 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 263 transitions. Word has length 55 [2024-10-10 22:11:31,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:11:31,242 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 263 transitions. [2024-10-10 22:11:31,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 18 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:11:31,242 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 263 transitions. [2024-10-10 22:11:31,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-10-10 22:11:31,245 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:11:31,245 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 11, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:11:31,258 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-10 22:11:31,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:11:31,446 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:11:31,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:11:31,446 INFO L85 PathProgramCache]: Analyzing trace with hash 497599061, now seen corresponding path program 4 times [2024-10-10 22:11:31,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:11:31,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876898620] [2024-10-10 22:11:31,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:11:31,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:11:31,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:11:31,917 INFO L134 CoverageAnalysis]: Checked inductivity of 3103 backedges. 1 proven. 66 refuted. 0 times theorem prover too weak. 3036 trivial. 0 not checked. [2024-10-10 22:11:31,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:11:31,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876898620] [2024-10-10 22:11:31,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876898620] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:11:31,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550964524] [2024-10-10 22:11:31,918 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-10 22:11:31,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:11:31,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:11:31,921 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:11:31,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-10 22:11:32,020 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-10 22:11:32,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:11:32,022 INFO L255 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-10 22:11:32,026 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:11:32,571 INFO L134 CoverageAnalysis]: Checked inductivity of 3103 backedges. 145 proven. 2363 refuted. 0 times theorem prover too weak. 595 trivial. 0 not checked. [2024-10-10 22:11:32,571 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:11:32,999 INFO L134 CoverageAnalysis]: Checked inductivity of 3103 backedges. 145 proven. 2363 refuted. 0 times theorem prover too weak. 595 trivial. 0 not checked. [2024-10-10 22:11:32,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550964524] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:11:32,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:11:32,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 19, 19] total 49 [2024-10-10 22:11:33,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589896590] [2024-10-10 22:11:33,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:11:33,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-10-10 22:11:33,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:11:33,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-10-10 22:11:33,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=457, Invalid=1895, Unknown=0, NotChecked=0, Total=2352 [2024-10-10 22:11:33,002 INFO L87 Difference]: Start difference. First operand 201 states and 263 transitions. Second operand has 49 states, 49 states have (on average 3.0) internal successors, (147), 49 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:11:38,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:11:38,146 INFO L93 Difference]: Finished difference Result 1572 states and 1864 transitions. [2024-10-10 22:11:38,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2024-10-10 22:11:38,147 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 3.0) internal successors, (147), 49 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 167 [2024-10-10 22:11:38,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:11:38,150 INFO L225 Difference]: With dead ends: 1572 [2024-10-10 22:11:38,150 INFO L226 Difference]: Without dead ends: 1373 [2024-10-10 22:11:38,160 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 655 GetRequests, 448 SyntacticMatches, 0 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16287 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=9701, Invalid=33771, Unknown=0, NotChecked=0, Total=43472 [2024-10-10 22:11:38,161 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 7957 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 1010 mSolverCounterSat, 1474 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7957 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 2484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1474 IncrementalHoareTripleChecker+Valid, 1010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-10 22:11:38,161 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7957 Valid, 538 Invalid, 2484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1474 Valid, 1010 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-10 22:11:38,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1373 states. [2024-10-10 22:11:38,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1373 to 490. [2024-10-10 22:11:38,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 489 states have (on average 1.3251533742331287) internal successors, (648), 489 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:11:38,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 648 transitions. [2024-10-10 22:11:38,210 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 648 transitions. Word has length 167 [2024-10-10 22:11:38,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:11:38,211 INFO L471 AbstractCegarLoop]: Abstraction has 490 states and 648 transitions. [2024-10-10 22:11:38,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 3.0) internal successors, (147), 49 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:11:38,211 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 648 transitions. [2024-10-10 22:11:38,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2024-10-10 22:11:38,218 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:11:38,219 INFO L215 NwaCegarLoop]: trace histogram [132, 132, 132, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:11:38,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-10 22:11:38,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-10-10 22:11:38,419 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:11:38,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:11:38,420 INFO L85 PathProgramCache]: Analyzing trace with hash 104473209, now seen corresponding path program 5 times [2024-10-10 22:11:38,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:11:38,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068338494] [2024-10-10 22:11:38,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:11:38,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:11:38,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:11:39,252 INFO L134 CoverageAnalysis]: Checked inductivity of 27645 backedges. 1 proven. 78 refuted. 0 times theorem prover too weak. 27566 trivial. 0 not checked. [2024-10-10 22:11:39,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:11:39,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068338494] [2024-10-10 22:11:39,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068338494] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:11:39,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052964977] [2024-10-10 22:11:39,255 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-10 22:11:39,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:11:39,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:11:39,256 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:11:39,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-10 22:11:39,549 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2024-10-10 22:11:39,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:11:39,552 INFO L255 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 0 conjuncts are in the unsatisfiable core [2024-10-10 22:11:39,558 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:11:39,574 INFO L134 CoverageAnalysis]: Checked inductivity of 27645 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27645 trivial. 0 not checked. [2024-10-10 22:11:39,575 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 22:11:39,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052964977] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:11:39,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 22:11:39,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [15] total 16 [2024-10-10 22:11:39,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633095480] [2024-10-10 22:11:39,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:11:39,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-10 22:11:39,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:11:39,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-10 22:11:39,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=132, Unknown=0, NotChecked=0, Total=240 [2024-10-10 22:11:39,576 INFO L87 Difference]: Start difference. First operand 490 states and 648 transitions. Second operand has 2 states, 1 states have (on average 19.0) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:11:39,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:11:39,595 INFO L93 Difference]: Finished difference Result 490 states and 648 transitions. [2024-10-10 22:11:39,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-10 22:11:39,596 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 19.0) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 453 [2024-10-10 22:11:39,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:11:39,597 INFO L225 Difference]: With dead ends: 490 [2024-10-10 22:11:39,597 INFO L226 Difference]: Without dead ends: 0 [2024-10-10 22:11:39,598 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 453 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=132, Unknown=0, NotChecked=0, Total=240 [2024-10-10 22:11:39,598 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 22:11:39,598 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 22:11:39,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-10 22:11:39,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-10 22:11:39,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:11:39,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-10 22:11:39,599 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 453 [2024-10-10 22:11:39,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:11:39,599 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-10 22:11:39,600 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 19.0) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:11:39,600 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-10 22:11:39,600 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-10 22:11:39,602 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-10 22:11:39,609 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-10 22:11:39,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:11:39,806 INFO L407 BasicCegarLoop]: Path program histogram: [5, 1, 1, 1] [2024-10-10 22:11:39,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-10 22:11:45,084 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-10 22:11:45,101 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.10 10:11:45 BoogieIcfgContainer [2024-10-10 22:11:45,101 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-10 22:11:45,102 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-10 22:11:45,102 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-10 22:11:45,102 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-10 22:11:45,102 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 10:11:27" (3/4) ... [2024-10-10 22:11:45,104 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-10 22:11:45,111 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-10-10 22:11:45,111 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-10-10 22:11:45,111 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-10 22:11:45,112 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-10 22:11:45,175 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-10 22:11:45,176 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-10 22:11:45,176 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-10 22:11:45,176 INFO L158 Benchmark]: Toolchain (without parser) took 18323.71ms. Allocated memory was 184.5MB in the beginning and 570.4MB in the end (delta: 385.9MB). Free memory was 115.3MB in the beginning and 221.6MB in the end (delta: -106.2MB). Peak memory consumption was 281.9MB. Max. memory is 16.1GB. [2024-10-10 22:11:45,176 INFO L158 Benchmark]: CDTParser took 0.48ms. Allocated memory is still 115.3MB. Free memory is still 80.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-10 22:11:45,177 INFO L158 Benchmark]: CACSL2BoogieTranslator took 216.54ms. Allocated memory is still 184.5MB. Free memory was 115.1MB in the beginning and 102.8MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-10 22:11:45,177 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.96ms. Allocated memory is still 184.5MB. Free memory was 102.8MB in the beginning and 101.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-10 22:11:45,177 INFO L158 Benchmark]: Boogie Preprocessor took 54.52ms. Allocated memory is still 184.5MB. Free memory was 101.1MB in the beginning and 155.6MB in the end (delta: -54.5MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. [2024-10-10 22:11:45,177 INFO L158 Benchmark]: RCFGBuilder took 276.97ms. Allocated memory is still 184.5MB. Free memory was 155.6MB in the beginning and 142.3MB in the end (delta: 13.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-10-10 22:11:45,177 INFO L158 Benchmark]: TraceAbstraction took 17665.94ms. Allocated memory was 184.5MB in the beginning and 570.4MB in the end (delta: 385.9MB). Free memory was 141.6MB in the beginning and 225.7MB in the end (delta: -84.2MB). Peak memory consumption was 341.9MB. Max. memory is 16.1GB. [2024-10-10 22:11:45,178 INFO L158 Benchmark]: Witness Printer took 73.95ms. Allocated memory is still 570.4MB. Free memory was 225.7MB in the beginning and 221.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-10 22:11:45,179 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48ms. Allocated memory is still 115.3MB. Free memory is still 80.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 216.54ms. Allocated memory is still 184.5MB. Free memory was 115.1MB in the beginning and 102.8MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.96ms. Allocated memory is still 184.5MB. Free memory was 102.8MB in the beginning and 101.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.52ms. Allocated memory is still 184.5MB. Free memory was 101.1MB in the beginning and 155.6MB in the end (delta: -54.5MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. * RCFGBuilder took 276.97ms. Allocated memory is still 184.5MB. Free memory was 155.6MB in the beginning and 142.3MB in the end (delta: 13.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 17665.94ms. Allocated memory was 184.5MB in the beginning and 570.4MB in the end (delta: 385.9MB). Free memory was 141.6MB in the beginning and 225.7MB in the end (delta: -84.2MB). Peak memory consumption was 341.9MB. Max. memory is 16.1GB. * Witness Printer took 73.95ms. Allocated memory is still 570.4MB. Free memory was 225.7MB in the beginning and 221.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 7]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 12.3s, OverallIterations: 8, TraceHistogramMax: 132, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 6.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9880 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9880 mSDsluCounter, 820 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 683 mSDsCounter, 1761 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1418 IncrementalHoareTripleChecker+Invalid, 3179 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1761 mSolverCounterUnsat, 137 mSDtfsCounter, 1418 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1421 GetRequests, 1090 SyntacticMatches, 0 SemanticMatches, 331 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18176 ImplicationChecksByTransitivity, 5.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=490occurred in iteration=7, InterpolantAutomatonStates: 259, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 1205 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 1484 NumberOfCodeBlocks, 1084 NumberOfCodeBlocksAsserted, 44 NumberOfCheckSat, 1739 ConstructedInterpolants, 0 QuantifiedInterpolants, 3871 SizeOfPredicates, 2 NumberOfNonLiveVariables, 1000 ConjunctsInSsa, 33 ConjunctsInUnsatCore, 17 InterpolantComputations, 4 PerfectInterpolantSequences, 60362/65322 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 54]: Loop Invariant Derived loop invariant: (1499 < n) - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: (1499 < n) - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: ((1500 <= n) && (((long long) i + 1) <= n)) - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: (1499 < n) - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: (1499 < n) - InvariantResult [Line: 56]: Loop Invariant Derived loop invariant: ((1500 <= n) && (((long long) i + 1) <= n)) RESULT: Ultimate proved your program to be correct! [2024-10-10 22:11:45,213 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE