./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/id_i5_o5-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive-simple/id_i5_o5-2.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 1be5a7d97aa41e02c549ddce0b54861696e25bfa9b91d41dbf151eb81f7686c7 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 04:07:43,984 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 04:07:44,023 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 04:07:44,027 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 04:07:44,027 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 04:07:44,045 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 04:07:44,045 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 04:07:44,045 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 04:07:44,046 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 04:07:44,046 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 04:07:44,046 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 04:07:44,046 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 04:07:44,046 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 04:07:44,046 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 04:07:44,046 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 04:07:44,047 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 04:07:44,047 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 04:07:44,047 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 04:07:44,047 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 04:07:44,047 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 04:07:44,047 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 04:07:44,047 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 04:07:44,047 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 04:07:44,047 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 04:07:44,047 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 04:07:44,047 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 04:07:44,047 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 04:07:44,047 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 04:07:44,048 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 04:07:44,048 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 04:07:44,048 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 04:07:44,048 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 04:07:44,048 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 04:07:44,048 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 04:07:44,048 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 04:07:44,048 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 04:07:44,048 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 04:07:44,048 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 04:07:44,048 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 04:07:44,048 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 04:07:44,048 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 04:07:44,048 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 04:07:44,048 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 04:07:44,048 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 04:07:44,048 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 04:07:44,048 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 04:07:44,048 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 04:07:44,049 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 04:07:44,049 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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-jdk21/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 -> 1be5a7d97aa41e02c549ddce0b54861696e25bfa9b91d41dbf151eb81f7686c7 [2025-01-09 04:07:44,345 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 04:07:44,354 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 04:07:44,355 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 04:07:44,356 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 04:07:44,356 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 04:07:44,360 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/id_i5_o5-2.c [2025-01-09 04:07:45,560 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bc9cedabf/936c058247054beba337fc2bd2a6364f/FLAG1d1ac04e1 [2025-01-09 04:07:45,765 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 04:07:45,766 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/recursive-simple/id_i5_o5-2.c [2025-01-09 04:07:45,771 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bc9cedabf/936c058247054beba337fc2bd2a6364f/FLAG1d1ac04e1 [2025-01-09 04:07:45,794 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bc9cedabf/936c058247054beba337fc2bd2a6364f [2025-01-09 04:07:45,796 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 04:07:45,798 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 04:07:45,801 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 04:07:45,802 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 04:07:45,805 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 04:07:45,806 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 04:07:45" (1/1) ... [2025-01-09 04:07:45,807 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3011950 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:07:45, skipping insertion in model container [2025-01-09 04:07:45,807 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 04:07:45" (1/1) ... [2025-01-09 04:07:45,815 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 04:07:45,917 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/recursive-simple/id_i5_o5-2.c[450,463] [2025-01-09 04:07:45,920 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 04:07:45,926 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 04:07:45,935 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/recursive-simple/id_i5_o5-2.c[450,463] [2025-01-09 04:07:45,936 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 04:07:45,945 INFO L204 MainTranslator]: Completed translation [2025-01-09 04:07:45,946 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:07:45 WrapperNode [2025-01-09 04:07:45,947 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 04:07:45,947 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 04:07:45,948 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 04:07:45,948 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 04:07:45,953 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:07:45" (1/1) ... [2025-01-09 04:07:45,958 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:07:45" (1/1) ... [2025-01-09 04:07:45,967 INFO L138 Inliner]: procedures = 13, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 18 [2025-01-09 04:07:45,968 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 04:07:45,968 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 04:07:45,968 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 04:07:45,969 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 04:07:45,974 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:07:45" (1/1) ... [2025-01-09 04:07:45,974 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:07:45" (1/1) ... [2025-01-09 04:07:45,975 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:07:45" (1/1) ... [2025-01-09 04:07:45,987 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-01-09 04:07:45,987 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:07:45" (1/1) ... [2025-01-09 04:07:45,987 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:07:45" (1/1) ... [2025-01-09 04:07:45,989 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:07:45" (1/1) ... [2025-01-09 04:07:45,990 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:07:45" (1/1) ... [2025-01-09 04:07:45,992 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:07:45" (1/1) ... [2025-01-09 04:07:45,993 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:07:45" (1/1) ... [2025-01-09 04:07:45,993 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:07:45" (1/1) ... [2025-01-09 04:07:45,994 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 04:07:45,995 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 04:07:45,995 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 04:07:45,995 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 04:07:45,995 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:07:45" (1/1) ... [2025-01-09 04:07:45,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 04:07:46,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:07:46,020 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-09 04:07:46,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-09 04:07:46,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 04:07:46,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 04:07:46,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 04:07:46,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 04:07:46,040 INFO L130 BoogieDeclarations]: Found specification of procedure id [2025-01-09 04:07:46,040 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2025-01-09 04:07:46,081 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 04:07:46,083 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 04:07:46,155 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2025-01-09 04:07:46,155 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 04:07:46,162 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 04:07:46,163 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-09 04:07:46,164 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:07:46 BoogieIcfgContainer [2025-01-09 04:07:46,164 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 04:07:46,165 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 04:07:46,165 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 04:07:46,168 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 04:07:46,168 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 04:07:45" (1/3) ... [2025-01-09 04:07:46,169 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@240465e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 04:07:46, skipping insertion in model container [2025-01-09 04:07:46,169 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:07:45" (2/3) ... [2025-01-09 04:07:46,169 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@240465e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 04:07:46, skipping insertion in model container [2025-01-09 04:07:46,170 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:07:46" (3/3) ... [2025-01-09 04:07:46,170 INFO L128 eAbstractionObserver]: Analyzing ICFG id_i5_o5-2.c [2025-01-09 04:07:46,181 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 04:07:46,182 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG id_i5_o5-2.c that has 2 procedures, 16 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-01-09 04:07:46,219 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 04:07:46,230 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;@466c63a7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 04:07:46,230 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 04:07:46,233 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-09 04:07:46,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-01-09 04:07:46,238 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:07:46,238 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:07:46,239 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:07:46,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:07:46,244 INFO L85 PathProgramCache]: Analyzing trace with hash -358017204, now seen corresponding path program 1 times [2025-01-09 04:07:46,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:07:46,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361181568] [2025-01-09 04:07:46,250 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:07:46,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:07:46,289 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-09 04:07:46,300 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-09 04:07:46,301 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:07:46,301 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:46,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 04:07:46,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:07:46,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361181568] [2025-01-09 04:07:46,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361181568] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 04:07:46,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 04:07:46,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 04:07:46,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857007769] [2025-01-09 04:07:46,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 04:07:46,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 04:07:46,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:07:46,383 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 04:07:46,383 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 04:07:46,384 INFO L87 Difference]: Start difference. First operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-09 04:07:46,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:07:46,415 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2025-01-09 04:07:46,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 04:07:46,417 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2025-01-09 04:07:46,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:07:46,420 INFO L225 Difference]: With dead ends: 25 [2025-01-09 04:07:46,421 INFO L226 Difference]: Without dead ends: 15 [2025-01-09 04:07:46,422 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 04:07:46,424 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 7 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 04:07:46,424 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 40 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 04:07:46,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2025-01-09 04:07:46,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2025-01-09 04:07:46,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 11 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-09 04:07:46,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2025-01-09 04:07:46,445 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2025-01-09 04:07:46,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:07:46,446 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2025-01-09 04:07:46,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-09 04:07:46,446 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2025-01-09 04:07:46,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-01-09 04:07:46,447 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:07:46,447 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:07:46,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 04:07:46,447 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:07:46,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:07:46,448 INFO L85 PathProgramCache]: Analyzing trace with hash 679465686, now seen corresponding path program 1 times [2025-01-09 04:07:46,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:07:46,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233501375] [2025-01-09 04:07:46,448 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:07:46,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:07:46,453 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-01-09 04:07:46,458 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-01-09 04:07:46,458 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:07:46,458 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:46,525 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 04:07:46,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:07:46,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233501375] [2025-01-09 04:07:46,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233501375] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:07:46,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601186368] [2025-01-09 04:07:46,526 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:07:46,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:07:46,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:07:46,532 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:07:46,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-09 04:07:46,563 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-01-09 04:07:46,573 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-01-09 04:07:46,573 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:07:46,573 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:46,575 INFO L256 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-09 04:07:46,577 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:07:46,627 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 04:07:46,627 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:07:46,831 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 04:07:46,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601186368] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:07:46,831 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:07:46,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 9 [2025-01-09 04:07:46,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806922282] [2025-01-09 04:07:46,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:07:46,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-01-09 04:07:46,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:07:46,835 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-01-09 04:07:46,835 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-01-09 04:07:46,835 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 9 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 9 states have internal predecessors, (16), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2025-01-09 04:07:46,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:07:46,886 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2025-01-09 04:07:46,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 04:07:46,887 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 9 states have internal predecessors, (16), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) Word has length 16 [2025-01-09 04:07:46,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:07:46,888 INFO L225 Difference]: With dead ends: 22 [2025-01-09 04:07:46,888 INFO L226 Difference]: Without dead ends: 18 [2025-01-09 04:07:46,888 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2025-01-09 04:07:46,889 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 14 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 32 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 [2025-01-09 04:07:46,890 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 32 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 04:07:46,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2025-01-09 04:07:46,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2025-01-09 04:07:46,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 13 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2025-01-09 04:07:46,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2025-01-09 04:07:46,894 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 16 [2025-01-09 04:07:46,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:07:46,894 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2025-01-09 04:07:46,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 9 states have internal predecessors, (16), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2025-01-09 04:07:46,895 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2025-01-09 04:07:46,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-01-09 04:07:46,896 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:07:46,896 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:07:46,903 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-09 04:07:47,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:07:47,101 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:07:47,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:07:47,102 INFO L85 PathProgramCache]: Analyzing trace with hash -41010676, now seen corresponding path program 2 times [2025-01-09 04:07:47,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:07:47,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477271962] [2025-01-09 04:07:47,102 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 04:07:47,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:07:47,114 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-01-09 04:07:47,127 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 04:07:47,130 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 04:07:47,130 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:47,228 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-09 04:07:47,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:07:47,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477271962] [2025-01-09 04:07:47,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477271962] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:07:47,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197866069] [2025-01-09 04:07:47,229 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 04:07:47,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:07:47,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:07:47,231 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:07:47,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-09 04:07:47,252 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-01-09 04:07:47,261 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 04:07:47,261 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 04:07:47,261 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:47,262 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-09 04:07:47,264 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:07:47,309 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-01-09 04:07:47,310 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:07:47,540 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-09 04:07:47,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197866069] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:07:47,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:07:47,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 9] total 13 [2025-01-09 04:07:47,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787849072] [2025-01-09 04:07:47,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:07:47,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-01-09 04:07:47,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:07:47,544 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-01-09 04:07:47,545 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2025-01-09 04:07:47,545 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 13 states, 11 states have (on average 2.090909090909091) internal successors, (23), 13 states have internal predecessors, (23), 5 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2025-01-09 04:07:47,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:07:47,627 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2025-01-09 04:07:47,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 04:07:47,628 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.090909090909091) internal successors, (23), 13 states have internal predecessors, (23), 5 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) Word has length 22 [2025-01-09 04:07:47,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:07:47,628 INFO L225 Difference]: With dead ends: 25 [2025-01-09 04:07:47,628 INFO L226 Difference]: Without dead ends: 21 [2025-01-09 04:07:47,629 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2025-01-09 04:07:47,629 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 18 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 04:07:47,629 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 47 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 04:07:47,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2025-01-09 04:07:47,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2025-01-09 04:07:47,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 15 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 04:07:47,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2025-01-09 04:07:47,636 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 22 [2025-01-09 04:07:47,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:07:47,637 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2025-01-09 04:07:47,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.090909090909091) internal successors, (23), 13 states have internal predecessors, (23), 5 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2025-01-09 04:07:47,637 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2025-01-09 04:07:47,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-01-09 04:07:47,637 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:07:47,637 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:07:47,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-01-09 04:07:47,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:07:47,842 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:07:47,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:07:47,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1769866774, now seen corresponding path program 3 times [2025-01-09 04:07:47,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:07:47,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068129587] [2025-01-09 04:07:47,843 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 04:07:47,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:07:47,848 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 28 statements into 4 equivalence classes. [2025-01-09 04:07:47,854 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 28 of 28 statements. [2025-01-09 04:07:47,854 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-01-09 04:07:47,854 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:47,995 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-01-09 04:07:47,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:07:47,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068129587] [2025-01-09 04:07:47,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068129587] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:07:47,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268685881] [2025-01-09 04:07:47,996 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 04:07:47,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:07:47,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:07:47,998 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:07:48,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-01-09 04:07:48,020 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 28 statements into 4 equivalence classes. [2025-01-09 04:07:48,029 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 28 of 28 statements. [2025-01-09 04:07:48,029 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-01-09 04:07:48,029 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:48,029 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-09 04:07:48,030 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:07:48,067 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-01-09 04:07:48,067 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:07:48,601 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 04:07:48,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268685881] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:07:48,602 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:07:48,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 11] total 17 [2025-01-09 04:07:48,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989095994] [2025-01-09 04:07:48,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:07:48,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-09 04:07:48,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:07:48,603 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-09 04:07:48,603 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2025-01-09 04:07:48,603 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 17 states, 15 states have (on average 2.066666666666667) internal successors, (31), 17 states have internal predecessors, (31), 7 states have call successors, (7), 1 states have call predecessors, (7), 6 states have return successors, (10), 5 states have call predecessors, (10), 7 states have call successors, (10) [2025-01-09 04:07:48,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:07:48,719 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2025-01-09 04:07:48,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 04:07:48,720 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 2.066666666666667) internal successors, (31), 17 states have internal predecessors, (31), 7 states have call successors, (7), 1 states have call predecessors, (7), 6 states have return successors, (10), 5 states have call predecessors, (10), 7 states have call successors, (10) Word has length 28 [2025-01-09 04:07:48,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:07:48,720 INFO L225 Difference]: With dead ends: 28 [2025-01-09 04:07:48,720 INFO L226 Difference]: Without dead ends: 24 [2025-01-09 04:07:48,721 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 46 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2025-01-09 04:07:48,725 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 26 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 04:07:48,725 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 68 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 04:07:48,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2025-01-09 04:07:48,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2025-01-09 04:07:48,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.0625) internal successors, (17), 17 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2025-01-09 04:07:48,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2025-01-09 04:07:48,728 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 28 [2025-01-09 04:07:48,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:07:48,728 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2025-01-09 04:07:48,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 2.066666666666667) internal successors, (31), 17 states have internal predecessors, (31), 7 states have call successors, (7), 1 states have call predecessors, (7), 6 states have return successors, (10), 5 states have call predecessors, (10), 7 states have call successors, (10) [2025-01-09 04:07:48,728 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2025-01-09 04:07:48,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-01-09 04:07:48,728 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:07:48,728 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:07:48,745 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-01-09 04:07:48,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:07:48,933 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:07:48,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:07:48,934 INFO L85 PathProgramCache]: Analyzing trace with hash 371264716, now seen corresponding path program 4 times [2025-01-09 04:07:48,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:07:48,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463309767] [2025-01-09 04:07:48,934 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 04:07:48,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:07:48,942 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 34 statements into 2 equivalence classes. [2025-01-09 04:07:48,950 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 28 of 34 statements. [2025-01-09 04:07:48,950 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-09 04:07:48,950 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:49,064 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-01-09 04:07:49,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:07:49,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463309767] [2025-01-09 04:07:49,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463309767] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:07:49,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042348342] [2025-01-09 04:07:49,067 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 04:07:49,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:07:49,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:07:49,070 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:07:49,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-01-09 04:07:49,109 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 34 statements into 2 equivalence classes. [2025-01-09 04:07:49,118 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 28 of 34 statements. [2025-01-09 04:07:49,118 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-09 04:07:49,118 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:49,122 INFO L256 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-09 04:07:49,123 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:07:49,171 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-01-09 04:07:49,171 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:07:49,951 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-01-09 04:07:49,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042348342] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:07:49,951 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:07:49,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 13] total 14 [2025-01-09 04:07:49,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806392183] [2025-01-09 04:07:49,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:07:49,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-01-09 04:07:49,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:07:49,956 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-01-09 04:07:49,956 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2025-01-09 04:07:49,956 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 14 states, 13 states have (on average 2.076923076923077) internal successors, (27), 14 states have internal predecessors, (27), 6 states have call successors, (6), 1 states have call predecessors, (6), 5 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) [2025-01-09 04:07:50,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:07:50,043 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2025-01-09 04:07:50,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 04:07:50,044 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.076923076923077) internal successors, (27), 14 states have internal predecessors, (27), 6 states have call successors, (6), 1 states have call predecessors, (6), 5 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) Word has length 34 [2025-01-09 04:07:50,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:07:50,044 INFO L225 Difference]: With dead ends: 31 [2025-01-09 04:07:50,044 INFO L226 Difference]: Without dead ends: 27 [2025-01-09 04:07:50,045 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 61 SyntacticMatches, 6 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2025-01-09 04:07:50,045 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 19 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 04:07:50,045 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 63 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 04:07:50,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2025-01-09 04:07:50,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2025-01-09 04:07:50,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 19 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (7), 6 states have call predecessors, (7), 2 states have call successors, (7) [2025-01-09 04:07:50,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2025-01-09 04:07:50,053 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 34 [2025-01-09 04:07:50,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:07:50,053 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2025-01-09 04:07:50,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.076923076923077) internal successors, (27), 14 states have internal predecessors, (27), 6 states have call successors, (6), 1 states have call predecessors, (6), 5 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) [2025-01-09 04:07:50,053 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2025-01-09 04:07:50,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2025-01-09 04:07:50,054 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:07:50,054 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:07:50,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-01-09 04:07:50,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:07:50,258 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:07:50,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:07:50,259 INFO L85 PathProgramCache]: Analyzing trace with hash -886339242, now seen corresponding path program 5 times [2025-01-09 04:07:50,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:07:50,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174303934] [2025-01-09 04:07:50,260 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 04:07:50,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:07:50,270 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 40 statements into 6 equivalence classes. [2025-01-09 04:07:50,287 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 40 of 40 statements. [2025-01-09 04:07:50,287 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-01-09 04:07:50,287 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:50,640 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2025-01-09 04:07:50,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:07:50,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174303934] [2025-01-09 04:07:50,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174303934] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:07:50,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084098949] [2025-01-09 04:07:50,640 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 04:07:50,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:07:50,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:07:50,645 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:07:50,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-01-09 04:07:50,681 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 40 statements into 6 equivalence classes. [2025-01-09 04:07:50,694 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 40 of 40 statements. [2025-01-09 04:07:50,694 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-01-09 04:07:50,694 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:50,695 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-01-09 04:07:50,696 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:07:50,733 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2025-01-09 04:07:50,733 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:07:50,950 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2025-01-09 04:07:50,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084098949] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:07:50,953 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:07:50,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 15 [2025-01-09 04:07:50,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795617592] [2025-01-09 04:07:50,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:07:50,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-01-09 04:07:50,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:07:50,954 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-01-09 04:07:50,954 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2025-01-09 04:07:50,954 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 15 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 9 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) [2025-01-09 04:07:51,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:07:51,038 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2025-01-09 04:07:51,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-01-09 04:07:51,038 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 9 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) Word has length 40 [2025-01-09 04:07:51,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:07:51,042 INFO L225 Difference]: With dead ends: 34 [2025-01-09 04:07:51,042 INFO L226 Difference]: Without dead ends: 30 [2025-01-09 04:07:51,042 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2025-01-09 04:07:51,043 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:07:51,043 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 263 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:07:51,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2025-01-09 04:07:51,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2025-01-09 04:07:51,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 20 states have (on average 1.05) internal successors, (21), 21 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (8), 7 states have call predecessors, (8), 2 states have call successors, (8) [2025-01-09 04:07:51,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2025-01-09 04:07:51,048 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 40 [2025-01-09 04:07:51,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:07:51,050 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2025-01-09 04:07:51,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 9 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) [2025-01-09 04:07:51,051 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2025-01-09 04:07:51,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2025-01-09 04:07:51,051 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:07:51,051 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:07:51,059 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-01-09 04:07:51,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:07:51,252 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:07:51,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:07:51,252 INFO L85 PathProgramCache]: Analyzing trace with hash -918712436, now seen corresponding path program 6 times [2025-01-09 04:07:51,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:07:51,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232283370] [2025-01-09 04:07:51,252 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 04:07:51,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:07:51,263 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 46 statements into 7 equivalence classes. [2025-01-09 04:07:51,273 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 46 of 46 statements. [2025-01-09 04:07:51,273 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-01-09 04:07:51,273 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:51,492 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 30 proven. 43 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2025-01-09 04:07:51,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:07:51,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232283370] [2025-01-09 04:07:51,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232283370] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:07:51,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101770751] [2025-01-09 04:07:51,492 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 04:07:51,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:07:51,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:07:51,494 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:07:51,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-01-09 04:07:51,552 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 46 statements into 7 equivalence classes. [2025-01-09 04:07:51,574 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 46 of 46 statements. [2025-01-09 04:07:51,574 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-01-09 04:07:51,574 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:51,574 INFO L256 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-01-09 04:07:51,576 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:07:51,655 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2025-01-09 04:07:51,655 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 04:07:51,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101770751] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 04:07:51,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 04:07:51,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13] total 15 [2025-01-09 04:07:51,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508663363] [2025-01-09 04:07:51,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 04:07:51,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-09 04:07:51,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:07:51,656 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-09 04:07:51,657 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2025-01-09 04:07:51,657 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 11 states, 10 states have (on average 2.1) internal successors, (21), 11 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 2 states have call successors, (7) [2025-01-09 04:07:51,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:07:51,750 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2025-01-09 04:07:51,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-09 04:07:51,750 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.1) internal successors, (21), 11 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 2 states have call successors, (7) Word has length 46 [2025-01-09 04:07:51,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:07:51,751 INFO L225 Difference]: With dead ends: 30 [2025-01-09 04:07:51,751 INFO L226 Difference]: Without dead ends: 0 [2025-01-09 04:07:51,751 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2025-01-09 04:07:51,751 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 2 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 04:07:51,751 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 58 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 04:07:51,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-01-09 04:07:51,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-01-09 04:07:51,752 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) [2025-01-09 04:07:51,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-01-09 04:07:51,752 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 46 [2025-01-09 04:07:51,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:07:51,752 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-01-09 04:07:51,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.1) internal successors, (21), 11 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 2 states have call successors, (7) [2025-01-09 04:07:51,752 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-01-09 04:07:51,752 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-01-09 04:07:51,759 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-01-09 04:07:51,773 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-01-09 04:07:51,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2025-01-09 04:07:51,962 INFO L422 BasicCegarLoop]: Path program histogram: [6, 1] [2025-01-09 04:07:51,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2025-01-09 04:07:52,116 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-01-09 04:07:52,120 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.01 04:07:52 BoogieIcfgContainer [2025-01-09 04:07:52,120 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-01-09 04:07:52,121 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-01-09 04:07:52,121 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-01-09 04:07:52,121 INFO L274 PluginConnector]: Witness Printer initialized [2025-01-09 04:07:52,121 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:07:46" (3/4) ... [2025-01-09 04:07:52,123 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-01-09 04:07:52,127 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure id [2025-01-09 04:07:52,129 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2025-01-09 04:07:52,129 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-01-09 04:07:52,129 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-01-09 04:07:52,129 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-01-09 04:07:52,178 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-01-09 04:07:52,179 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-01-09 04:07:52,179 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-01-09 04:07:52,179 INFO L158 Benchmark]: Toolchain (without parser) took 6381.15ms. Allocated memory is still 167.8MB. Free memory was 122.4MB in the beginning and 43.3MB in the end (delta: 79.1MB). Peak memory consumption was 75.0MB. Max. memory is 16.1GB. [2025-01-09 04:07:52,180 INFO L158 Benchmark]: CDTParser took 4.15ms. Allocated memory is still 226.5MB. Free memory is still 144.3MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 04:07:52,180 INFO L158 Benchmark]: CACSL2BoogieTranslator took 146.15ms. Allocated memory is still 167.8MB. Free memory was 122.4MB in the beginning and 112.3MB in the end (delta: 10.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-09 04:07:52,180 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.48ms. Allocated memory is still 167.8MB. Free memory was 112.3MB in the beginning and 111.4MB in the end (delta: 896.1kB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 04:07:52,180 INFO L158 Benchmark]: Boogie Preprocessor took 25.65ms. Allocated memory is still 167.8MB. Free memory was 111.4MB in the beginning and 110.5MB in the end (delta: 958.0kB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 04:07:52,180 INFO L158 Benchmark]: RCFGBuilder took 169.41ms. Allocated memory is still 167.8MB. Free memory was 109.6MB in the beginning and 101.0MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-09 04:07:52,181 INFO L158 Benchmark]: TraceAbstraction took 5955.19ms. Allocated memory is still 167.8MB. Free memory was 100.1MB in the beginning and 48.0MB in the end (delta: 52.1MB). Peak memory consumption was 49.8MB. Max. memory is 16.1GB. [2025-01-09 04:07:52,181 INFO L158 Benchmark]: Witness Printer took 57.93ms. Allocated memory is still 167.8MB. Free memory was 48.0MB in the beginning and 43.3MB in the end (delta: 4.6MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 04:07:52,182 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 4.15ms. Allocated memory is still 226.5MB. Free memory is still 144.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 146.15ms. Allocated memory is still 167.8MB. Free memory was 122.4MB in the beginning and 112.3MB in the end (delta: 10.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.48ms. Allocated memory is still 167.8MB. Free memory was 112.3MB in the beginning and 111.4MB in the end (delta: 896.1kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 25.65ms. Allocated memory is still 167.8MB. Free memory was 111.4MB in the beginning and 110.5MB in the end (delta: 958.0kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 169.41ms. Allocated memory is still 167.8MB. Free memory was 109.6MB in the beginning and 101.0MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 5955.19ms. Allocated memory is still 167.8MB. Free memory was 100.1MB in the beginning and 48.0MB in the end (delta: 52.1MB). Peak memory consumption was 49.8MB. Max. memory is 16.1GB. * Witness Printer took 57.93ms. Allocated memory is still 167.8MB. Free memory was 48.0MB in the beginning and 43.3MB in the end (delta: 4.6MB). There was no memory consumed. 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: 15]: 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 2 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.8s, OverallIterations: 7, TraceHistogramMax: 7, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 103 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 86 mSDsluCounter, 571 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 473 mSDsCounter, 32 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 320 IncrementalHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 32 mSolverCounterUnsat, 98 mSDtfsCounter, 320 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 410 GetRequests, 303 SyntacticMatches, 15 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=6, InterpolantAutomatonStates: 61, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 382 NumberOfCodeBlocks, 370 NumberOfCodeBlocksAsserted, 43 NumberOfCheckSat, 504 ConstructedInterpolants, 0 QuantifiedInterpolants, 1282 SizeOfPredicates, 16 NumberOfNonLiveVariables, 507 ConjunctsInSsa, 79 ConjunctsInUnsatCore, 18 InterpolantComputations, 2 PerfectInterpolantSequences, 416/768 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, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-01-09 04:07:52,209 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/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