./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-lit/gr2006.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loop-lit/gr2006.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3ef045eb54c58e8ecfe4972142a43378e1f3b08091dc3d5b7e399cf5703f1724 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 04:43:24,065 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 04:43:24,130 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 04:43:24,135 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 04:43:24,137 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 04:43:24,156 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 04:43:24,156 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 04:43:24,156 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 04:43:24,157 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 04:43:24,157 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 04:43:24,157 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 04:43:24,157 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 04:43:24,157 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 04:43:24,157 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 04:43:24,157 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 04:43:24,157 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 04:43:24,158 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 04:43:24,158 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 04:43:24,159 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 04:43:24,159 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 04:43:24,159 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 04:43:24,159 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 04:43:24,159 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 04:43:24,159 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 04:43:24,159 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 04:43:24,159 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 04:43:24,159 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 04:43:24,159 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 04:43:24,159 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 04:43:24,159 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 04:43:24,160 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 04:43:24,160 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 04:43:24,160 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 04:43:24,160 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 04:43:24,160 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 04:43:24,160 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 04:43:24,160 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 04:43:24,160 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 04:43:24,160 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 04:43:24,160 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 04:43:24,160 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 04:43:24,160 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 04:43:24,160 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 04:43:24,160 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/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 -> 3ef045eb54c58e8ecfe4972142a43378e1f3b08091dc3d5b7e399cf5703f1724 [2025-03-08 04:43:24,387 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 04:43:24,398 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 04:43:24,401 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 04:43:24,402 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 04:43:24,403 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 04:43:24,404 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-lit/gr2006.i [2025-03-08 04:43:25,526 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/434103121/ef658e95712b4719931728f9649fdf6c/FLAGd25f3e122 [2025-03-08 04:43:25,752 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 04:43:25,753 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/gr2006.i [2025-03-08 04:43:25,758 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/434103121/ef658e95712b4719931728f9649fdf6c/FLAGd25f3e122 [2025-03-08 04:43:25,768 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/434103121/ef658e95712b4719931728f9649fdf6c [2025-03-08 04:43:25,770 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 04:43:25,771 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 04:43:25,772 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 04:43:25,772 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 04:43:25,775 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 04:43:25,776 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 04:43:25" (1/1) ... [2025-03-08 04:43:25,776 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79da9237 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:43:25, skipping insertion in model container [2025-03-08 04:43:25,776 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 04:43:25" (1/1) ... [2025-03-08 04:43:25,791 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 04:43:25,896 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/gr2006.i[895,908] [2025-03-08 04:43:25,905 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 04:43:25,913 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 04:43:25,922 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/gr2006.i[895,908] [2025-03-08 04:43:25,923 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 04:43:25,934 INFO L204 MainTranslator]: Completed translation [2025-03-08 04:43:25,934 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:43:25 WrapperNode [2025-03-08 04:43:25,935 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 04:43:25,936 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 04:43:25,936 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 04:43:25,936 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 04:43:25,940 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:43:25" (1/1) ... [2025-03-08 04:43:25,946 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:43:25" (1/1) ... [2025-03-08 04:43:25,955 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34 [2025-03-08 04:43:25,956 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 04:43:25,957 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 04:43:25,957 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 04:43:25,958 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 04:43:25,962 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:43:25" (1/1) ... [2025-03-08 04:43:25,963 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:43:25" (1/1) ... [2025-03-08 04:43:25,963 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:43:25" (1/1) ... [2025-03-08 04:43:25,970 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]. [2025-03-08 04:43:25,971 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:43:25" (1/1) ... [2025-03-08 04:43:25,971 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:43:25" (1/1) ... [2025-03-08 04:43:25,973 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:43:25" (1/1) ... [2025-03-08 04:43:25,974 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:43:25" (1/1) ... [2025-03-08 04:43:25,975 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:43:25" (1/1) ... [2025-03-08 04:43:25,977 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:43:25" (1/1) ... [2025-03-08 04:43:25,978 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 04:43:25,978 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 04:43:25,979 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 04:43:25,979 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 04:43:25,979 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:43:25" (1/1) ... [2025-03-08 04:43:25,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 04:43:25,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:26,006 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-08 04:43:26,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-08 04:43:26,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 04:43:26,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 04:43:26,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 04:43:26,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 04:43:26,072 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 04:43:26,074 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 04:43:26,159 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2025-03-08 04:43:26,160 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 04:43:26,169 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 04:43:26,171 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 04:43:26,172 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 04:43:26 BoogieIcfgContainer [2025-03-08 04:43:26,172 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 04:43:26,174 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 04:43:26,174 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 04:43:26,178 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 04:43:26,178 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 04:43:25" (1/3) ... [2025-03-08 04:43:26,179 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@396eee21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 04:43:26, skipping insertion in model container [2025-03-08 04:43:26,179 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:43:25" (2/3) ... [2025-03-08 04:43:26,179 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@396eee21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 04:43:26, skipping insertion in model container [2025-03-08 04:43:26,179 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 04:43:26" (3/3) ... [2025-03-08 04:43:26,180 INFO L128 eAbstractionObserver]: Analyzing ICFG gr2006.i [2025-03-08 04:43:26,192 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 04:43:26,193 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG gr2006.i that has 1 procedures, 12 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-08 04:43:26,230 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 04:43:26,240 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;@2993b741, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 04:43:26,240 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 04:43:26,243 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 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) [2025-03-08 04:43:26,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-03-08 04:43:26,246 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:26,246 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-08 04:43:26,247 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:26,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:26,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1389430328, now seen corresponding path program 1 times [2025-03-08 04:43:26,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:26,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925477423] [2025-03-08 04:43:26,259 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 04:43:26,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:26,313 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-08 04:43:26,324 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-08 04:43:26,324 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:43:26,325 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:26,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:26,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:26,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925477423] [2025-03-08 04:43:26,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925477423] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 04:43:26,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 04:43:26,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 04:43:26,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283676574] [2025-03-08 04:43:26,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 04:43:26,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-08 04:43:26,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:26,379 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-08 04:43:26,379 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 04:43:26,381 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2025-03-08 04:43:26,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:26,388 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2025-03-08 04:43:26,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-08 04:43:26,390 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2025-03-08 04:43:26,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:26,394 INFO L225 Difference]: With dead ends: 20 [2025-03-08 04:43:26,395 INFO L226 Difference]: Without dead ends: 8 [2025-03-08 04:43:26,397 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 04:43:26,399 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:26,400 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 04:43:26,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2025-03-08 04:43:26,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2025-03-08 04:43:26,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:26,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2025-03-08 04:43:26,420 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 6 [2025-03-08 04:43:26,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:26,420 INFO L471 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2025-03-08 04:43:26,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2025-03-08 04:43:26,420 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2025-03-08 04:43:26,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-08 04:43:26,421 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:26,421 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:26,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 04:43:26,421 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:26,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:26,422 INFO L85 PathProgramCache]: Analyzing trace with hash 120881706, now seen corresponding path program 1 times [2025-03-08 04:43:26,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:26,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615205218] [2025-03-08 04:43:26,423 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 04:43:26,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:26,430 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-08 04:43:26,439 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-08 04:43:26,439 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:43:26,439 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:26,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:26,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:26,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615205218] [2025-03-08 04:43:26,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615205218] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 04:43:26,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 04:43:26,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 04:43:26,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165860862] [2025-03-08 04:43:26,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 04:43:26,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 04:43:26,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:26,509 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 04:43:26,510 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 04:43:26,510 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2025-03-08 04:43:26,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:26,541 INFO L93 Difference]: Finished difference Result 15 states and 18 transitions. [2025-03-08 04:43:26,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 04:43:26,542 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-03-08 04:43:26,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:26,544 INFO L225 Difference]: With dead ends: 15 [2025-03-08 04:43:26,544 INFO L226 Difference]: Without dead ends: 11 [2025-03-08 04:43:26,544 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 04:43:26,545 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 1 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:26,545 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 14 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 04:43:26,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2025-03-08 04:43:26,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2025-03-08 04:43:26,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:26,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2025-03-08 04:43:26,554 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 7 [2025-03-08 04:43:26,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:26,554 INFO L471 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2025-03-08 04:43:26,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2025-03-08 04:43:26,554 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2025-03-08 04:43:26,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-08 04:43:26,554 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:26,554 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:26,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 04:43:26,555 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:26,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:26,555 INFO L85 PathProgramCache]: Analyzing trace with hash 121805227, now seen corresponding path program 1 times [2025-03-08 04:43:26,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:26,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615886577] [2025-03-08 04:43:26,555 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 04:43:26,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:26,563 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-08 04:43:26,565 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-08 04:43:26,565 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:43:26,566 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:26,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:26,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:26,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615886577] [2025-03-08 04:43:26,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615886577] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 04:43:26,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 04:43:26,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 04:43:26,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100763023] [2025-03-08 04:43:26,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 04:43:26,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 04:43:26,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:26,615 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 04:43:26,616 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 04:43:26,616 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2025-03-08 04:43:26,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:26,628 INFO L93 Difference]: Finished difference Result 18 states and 22 transitions. [2025-03-08 04:43:26,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 04:43:26,630 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-03-08 04:43:26,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:26,630 INFO L225 Difference]: With dead ends: 18 [2025-03-08 04:43:26,630 INFO L226 Difference]: Without dead ends: 12 [2025-03-08 04:43:26,631 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 04:43:26,631 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 1 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:26,631 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 11 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 04:43:26,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2025-03-08 04:43:26,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2025-03-08 04:43:26,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:26,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2025-03-08 04:43:26,638 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 7 [2025-03-08 04:43:26,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:26,639 INFO L471 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2025-03-08 04:43:26,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2025-03-08 04:43:26,639 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2025-03-08 04:43:26,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-03-08 04:43:26,640 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:26,640 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:26,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 04:43:26,640 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:26,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:26,641 INFO L85 PathProgramCache]: Analyzing trace with hash 266124140, now seen corresponding path program 1 times [2025-03-08 04:43:26,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:26,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011340973] [2025-03-08 04:43:26,643 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 04:43:26,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:26,650 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-08 04:43:26,654 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-08 04:43:26,657 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:43:26,657 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:26,707 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:26,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:26,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011340973] [2025-03-08 04:43:26,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011340973] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:26,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325408563] [2025-03-08 04:43:26,708 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 04:43:26,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:26,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:26,710 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:26,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 04:43:26,742 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-08 04:43:26,751 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-08 04:43:26,752 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:43:26,752 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:26,753 INFO L256 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 04:43:26,756 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:26,785 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:26,785 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:26,806 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:26,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325408563] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:26,807 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:26,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-03-08 04:43:26,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742494890] [2025-03-08 04:43:26,807 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:26,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 04:43:26,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:26,808 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 04:43:26,808 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-03-08 04:43:26,808 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 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) [2025-03-08 04:43:26,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:26,840 INFO L93 Difference]: Finished difference Result 25 states and 32 transitions. [2025-03-08 04:43:26,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 04:43:26,840 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-03-08 04:43:26,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:26,841 INFO L225 Difference]: With dead ends: 25 [2025-03-08 04:43:26,841 INFO L226 Difference]: Without dead ends: 19 [2025-03-08 04:43:26,841 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-03-08 04:43:26,842 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 3 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:26,842 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 27 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 04:43:26,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2025-03-08 04:43:26,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2025-03-08 04:43:26,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:26,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2025-03-08 04:43:26,846 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 9 [2025-03-08 04:43:26,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:26,846 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2025-03-08 04:43:26,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 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) [2025-03-08 04:43:26,846 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2025-03-08 04:43:26,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-03-08 04:43:26,847 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:26,847 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:26,856 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-08 04:43:27,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:27,047 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:27,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:27,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1643718865, now seen corresponding path program 2 times [2025-03-08 04:43:27,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:27,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403130167] [2025-03-08 04:43:27,048 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 04:43:27,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:27,058 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-03-08 04:43:27,076 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-03-08 04:43:27,076 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 04:43:27,076 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:27,176 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:27,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:27,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403130167] [2025-03-08 04:43:27,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403130167] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:27,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352025556] [2025-03-08 04:43:27,177 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 04:43:27,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:27,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:27,178 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:27,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 04:43:27,212 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-03-08 04:43:27,227 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-03-08 04:43:27,227 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 04:43:27,227 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:27,227 INFO L256 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-08 04:43:27,228 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:27,287 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-08 04:43:27,288 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:27,356 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-08 04:43:27,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352025556] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:27,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:27,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2025-03-08 04:43:27,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436897811] [2025-03-08 04:43:27,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:27,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-08 04:43:27,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:27,357 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-08 04:43:27,358 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2025-03-08 04:43:27,358 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:27,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:27,475 INFO L93 Difference]: Finished difference Result 35 states and 48 transitions. [2025-03-08 04:43:27,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-08 04:43:27,476 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2025-03-08 04:43:27,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:27,476 INFO L225 Difference]: With dead ends: 35 [2025-03-08 04:43:27,476 INFO L226 Difference]: Without dead ends: 29 [2025-03-08 04:43:27,477 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=176, Invalid=376, Unknown=0, NotChecked=0, Total=552 [2025-03-08 04:43:27,478 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 1 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:27,478 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 22 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 04:43:27,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2025-03-08 04:43:27,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2025-03-08 04:43:27,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 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) [2025-03-08 04:43:27,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2025-03-08 04:43:27,483 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 15 [2025-03-08 04:43:27,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:27,483 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2025-03-08 04:43:27,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:27,483 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2025-03-08 04:43:27,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-03-08 04:43:27,483 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:27,484 INFO L218 NwaCegarLoop]: trace histogram [9, 5, 5, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:27,490 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-08 04:43:27,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:27,686 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:27,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:27,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1990052872, now seen corresponding path program 3 times [2025-03-08 04:43:27,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:27,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551907479] [2025-03-08 04:43:27,687 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 04:43:27,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:27,695 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 25 statements into 10 equivalence classes. [2025-03-08 04:43:27,706 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) and asserted 25 of 25 statements. [2025-03-08 04:43:27,706 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2025-03-08 04:43:27,706 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:27,820 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 49 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-03-08 04:43:27,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:27,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551907479] [2025-03-08 04:43:27,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551907479] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:27,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747709288] [2025-03-08 04:43:27,821 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 04:43:27,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:27,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:27,823 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:27,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-08 04:43:27,850 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 25 statements into 10 equivalence classes. [2025-03-08 04:43:27,866 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) and asserted 25 of 25 statements. [2025-03-08 04:43:27,866 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2025-03-08 04:43:27,867 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:27,867 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-08 04:43:27,869 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:27,960 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 41 proven. 41 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-03-08 04:43:27,960 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:28,066 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 41 proven. 41 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-03-08 04:43:28,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747709288] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:28,067 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:28,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2025-03-08 04:43:28,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272643336] [2025-03-08 04:43:28,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:28,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-08 04:43:28,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:28,067 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-08 04:43:28,067 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2025-03-08 04:43:28,068 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 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) [2025-03-08 04:43:28,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:28,184 INFO L93 Difference]: Finished difference Result 55 states and 72 transitions. [2025-03-08 04:43:28,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-03-08 04:43:28,185 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2025-03-08 04:43:28,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:28,185 INFO L225 Difference]: With dead ends: 55 [2025-03-08 04:43:28,185 INFO L226 Difference]: Without dead ends: 40 [2025-03-08 04:43:28,186 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 34 SyntacticMatches, 10 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=169, Invalid=431, Unknown=0, NotChecked=0, Total=600 [2025-03-08 04:43:28,186 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:28,186 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 26 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:28,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2025-03-08 04:43:28,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 30. [2025-03-08 04:43:28,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 29 states have internal predecessors, (36), 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) [2025-03-08 04:43:28,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2025-03-08 04:43:28,190 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 25 [2025-03-08 04:43:28,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:28,190 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2025-03-08 04:43:28,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 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) [2025-03-08 04:43:28,190 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2025-03-08 04:43:28,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-03-08 04:43:28,190 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:28,190 INFO L218 NwaCegarLoop]: trace histogram [11, 6, 6, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:28,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-08 04:43:28,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:28,391 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:28,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:28,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1409947397, now seen corresponding path program 4 times [2025-03-08 04:43:28,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:28,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185802373] [2025-03-08 04:43:28,391 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 04:43:28,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:28,398 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 29 statements into 2 equivalence classes. [2025-03-08 04:43:28,406 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 29 of 29 statements. [2025-03-08 04:43:28,410 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 04:43:28,411 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:28,496 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 71 proven. 36 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-08 04:43:28,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:28,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185802373] [2025-03-08 04:43:28,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185802373] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:28,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107298407] [2025-03-08 04:43:28,497 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 04:43:28,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:28,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:28,498 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:28,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-08 04:43:28,522 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 29 statements into 2 equivalence classes. [2025-03-08 04:43:28,532 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 29 of 29 statements. [2025-03-08 04:43:28,532 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 04:43:28,532 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:28,532 INFO L256 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-08 04:43:28,533 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:28,551 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 71 proven. 36 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-08 04:43:28,554 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:28,658 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 71 proven. 36 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-08 04:43:28,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107298407] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:28,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:28,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2025-03-08 04:43:28,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243499404] [2025-03-08 04:43:28,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:28,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-08 04:43:28,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:28,660 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-08 04:43:28,661 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2025-03-08 04:43:28,661 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 16 states, 16 states have (on average 2.1875) internal successors, (35), 16 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:28,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:28,709 INFO L93 Difference]: Finished difference Result 67 states and 87 transitions. [2025-03-08 04:43:28,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-08 04:43:28,709 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.1875) internal successors, (35), 16 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2025-03-08 04:43:28,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:28,710 INFO L225 Difference]: With dead ends: 67 [2025-03-08 04:43:28,710 INFO L226 Difference]: Without dead ends: 50 [2025-03-08 04:43:28,710 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2025-03-08 04:43:28,711 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:28,711 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 19 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 04:43:28,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2025-03-08 04:43:28,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 46. [2025-03-08 04:43:28,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.1555555555555554) internal successors, (52), 45 states have internal predecessors, (52), 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) [2025-03-08 04:43:28,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2025-03-08 04:43:28,719 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 29 [2025-03-08 04:43:28,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:28,719 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2025-03-08 04:43:28,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.1875) internal successors, (35), 16 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:28,720 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2025-03-08 04:43:28,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-03-08 04:43:28,720 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:28,720 INFO L218 NwaCegarLoop]: trace histogram [19, 14, 6, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:28,726 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-08 04:43:28,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:28,921 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:28,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:28,921 INFO L85 PathProgramCache]: Analyzing trace with hash -766236157, now seen corresponding path program 5 times [2025-03-08 04:43:28,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:28,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708952810] [2025-03-08 04:43:28,922 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 04:43:28,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:28,930 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 45 statements into 20 equivalence classes. [2025-03-08 04:43:28,964 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) and asserted 45 of 45 statements. [2025-03-08 04:43:28,964 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2025-03-08 04:43:28,964 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:29,186 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 159 proven. 196 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-08 04:43:29,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:29,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708952810] [2025-03-08 04:43:29,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708952810] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:29,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383748361] [2025-03-08 04:43:29,186 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 04:43:29,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:29,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:29,191 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:29,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-08 04:43:29,218 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 45 statements into 20 equivalence classes. [2025-03-08 04:43:29,234 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) and asserted 45 of 45 statements. [2025-03-08 04:43:29,234 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2025-03-08 04:43:29,234 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:29,235 INFO L256 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-08 04:43:29,237 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:29,284 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 159 proven. 196 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-08 04:43:29,284 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:29,613 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 159 proven. 196 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-08 04:43:29,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1383748361] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:29,613 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:29,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 32 [2025-03-08 04:43:29,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321953736] [2025-03-08 04:43:29,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:29,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-03-08 04:43:29,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:29,614 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-03-08 04:43:29,615 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2025-03-08 04:43:29,615 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand has 32 states, 32 states have (on average 2.09375) internal successors, (67), 32 states have internal predecessors, (67), 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) [2025-03-08 04:43:29,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:29,703 INFO L93 Difference]: Finished difference Result 99 states and 127 transitions. [2025-03-08 04:43:29,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-03-08 04:43:29,703 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.09375) internal successors, (67), 32 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2025-03-08 04:43:29,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:29,704 INFO L225 Difference]: With dead ends: 99 [2025-03-08 04:43:29,704 INFO L226 Difference]: Without dead ends: 82 [2025-03-08 04:43:29,705 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2025-03-08 04:43:29,705 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:29,705 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 15 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:29,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2025-03-08 04:43:29,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 78. [2025-03-08 04:43:29,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.0909090909090908) internal successors, (84), 77 states have internal predecessors, (84), 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) [2025-03-08 04:43:29,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 84 transitions. [2025-03-08 04:43:29,712 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 84 transitions. Word has length 45 [2025-03-08 04:43:29,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:29,712 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 84 transitions. [2025-03-08 04:43:29,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.09375) internal successors, (67), 32 states have internal predecessors, (67), 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) [2025-03-08 04:43:29,712 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 84 transitions. [2025-03-08 04:43:29,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2025-03-08 04:43:29,713 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:29,713 INFO L218 NwaCegarLoop]: trace histogram [35, 30, 6, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:29,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-08 04:43:29,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:29,918 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:29,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:29,918 INFO L85 PathProgramCache]: Analyzing trace with hash 121076755, now seen corresponding path program 6 times [2025-03-08 04:43:29,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:29,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083844929] [2025-03-08 04:43:29,919 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 04:43:29,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:29,926 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 77 statements into 36 equivalence classes. [2025-03-08 04:43:29,958 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 36 check-sat command(s) and asserted 77 of 77 statements. [2025-03-08 04:43:29,959 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 36 check-sat command(s) [2025-03-08 04:43:29,959 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:30,666 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 335 proven. 900 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-08 04:43:30,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:30,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083844929] [2025-03-08 04:43:30,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083844929] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:30,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117540381] [2025-03-08 04:43:30,666 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 04:43:30,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:30,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:30,672 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:30,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-08 04:43:30,702 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 77 statements into 36 equivalence classes. [2025-03-08 04:43:30,740 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 36 check-sat command(s) and asserted 77 of 77 statements. [2025-03-08 04:43:30,740 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 36 check-sat command(s) [2025-03-08 04:43:30,741 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:30,742 INFO L256 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-03-08 04:43:30,744 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:30,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 335 proven. 900 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-08 04:43:30,832 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:31,651 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 335 proven. 900 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-08 04:43:31,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117540381] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:31,651 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:31,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 53 [2025-03-08 04:43:31,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051771343] [2025-03-08 04:43:31,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:31,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2025-03-08 04:43:31,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:31,654 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2025-03-08 04:43:31,655 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2025-03-08 04:43:31,655 INFO L87 Difference]: Start difference. First operand 78 states and 84 transitions. Second operand has 53 states, 53 states have (on average 2.1132075471698113) internal successors, (112), 53 states have internal predecessors, (112), 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) [2025-03-08 04:43:31,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:31,786 INFO L93 Difference]: Finished difference Result 139 states and 171 transitions. [2025-03-08 04:43:31,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2025-03-08 04:43:31,786 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.1132075471698113) internal successors, (112), 53 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2025-03-08 04:43:31,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:31,787 INFO L225 Difference]: With dead ends: 139 [2025-03-08 04:43:31,787 INFO L226 Difference]: Without dead ends: 122 [2025-03-08 04:43:31,790 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 122 SyntacticMatches, 12 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2025-03-08 04:43:31,791 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 1 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:31,791 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 35 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:31,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2025-03-08 04:43:31,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 118. [2025-03-08 04:43:31,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 1.0598290598290598) internal successors, (124), 117 states have internal predecessors, (124), 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) [2025-03-08 04:43:31,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 124 transitions. [2025-03-08 04:43:31,808 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 124 transitions. Word has length 77 [2025-03-08 04:43:31,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:31,808 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 124 transitions. [2025-03-08 04:43:31,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.1132075471698113) internal successors, (112), 53 states have internal predecessors, (112), 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) [2025-03-08 04:43:31,808 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 124 transitions. [2025-03-08 04:43:31,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2025-03-08 04:43:31,809 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:31,809 INFO L218 NwaCegarLoop]: trace histogram [55, 50, 6, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:31,816 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-08 04:43:32,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:32,013 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:32,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:32,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1424386215, now seen corresponding path program 7 times [2025-03-08 04:43:32,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:32,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175241661] [2025-03-08 04:43:32,015 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 04:43:32,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:32,024 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 117 statements into 1 equivalence classes. [2025-03-08 04:43:32,052 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 117 of 117 statements. [2025-03-08 04:43:32,052 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:43:32,052 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:32,294 INFO L134 CoverageAnalysis]: Checked inductivity of 3080 backedges. 1117 proven. 61 refuted. 0 times theorem prover too weak. 1902 trivial. 0 not checked. [2025-03-08 04:43:32,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:32,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175241661] [2025-03-08 04:43:32,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175241661] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:32,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992881199] [2025-03-08 04:43:32,295 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 04:43:32,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:32,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:32,297 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:32,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-08 04:43:32,336 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 117 statements into 1 equivalence classes. [2025-03-08 04:43:32,371 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 117 of 117 statements. [2025-03-08 04:43:32,372 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:43:32,372 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:32,375 INFO L256 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 58 conjuncts are in the unsatisfiable core [2025-03-08 04:43:32,378 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:33,453 INFO L134 CoverageAnalysis]: Checked inductivity of 3080 backedges. 3008 proven. 61 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-03-08 04:43:33,454 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:34,417 INFO L134 CoverageAnalysis]: Checked inductivity of 3080 backedges. 3008 proven. 61 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-03-08 04:43:34,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992881199] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:34,417 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:34,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 53, 53] total 97 [2025-03-08 04:43:34,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949940975] [2025-03-08 04:43:34,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:34,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2025-03-08 04:43:34,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:34,420 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2025-03-08 04:43:34,422 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2025-03-08 04:43:34,423 INFO L87 Difference]: Start difference. First operand 118 states and 124 transitions. Second operand has 97 states, 97 states have (on average 2.185567010309278) internal successors, (212), 97 states have internal predecessors, (212), 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) [2025-03-08 04:43:34,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:34,895 INFO L93 Difference]: Finished difference Result 707 states and 1027 transitions. [2025-03-08 04:43:34,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2025-03-08 04:43:34,896 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 2.185567010309278) internal successors, (212), 97 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2025-03-08 04:43:34,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:34,899 INFO L225 Difference]: With dead ends: 707 [2025-03-08 04:43:34,899 INFO L226 Difference]: Without dead ends: 703 [2025-03-08 04:43:34,901 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 140 SyntacticMatches, 12 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4964 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2025-03-08 04:43:34,902 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:34,902 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 04:43:34,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2025-03-08 04:43:34,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 208. [2025-03-08 04:43:34,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 207 states have (on average 1.251207729468599) internal successors, (259), 207 states have internal predecessors, (259), 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) [2025-03-08 04:43:34,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 259 transitions. [2025-03-08 04:43:34,933 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 259 transitions. Word has length 117 [2025-03-08 04:43:34,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:34,933 INFO L471 AbstractCegarLoop]: Abstraction has 208 states and 259 transitions. [2025-03-08 04:43:34,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 2.185567010309278) internal successors, (212), 97 states have internal predecessors, (212), 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) [2025-03-08 04:43:34,933 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 259 transitions. [2025-03-08 04:43:34,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2025-03-08 04:43:34,935 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:34,935 INFO L218 NwaCegarLoop]: trace histogram [100, 51, 50, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:34,942 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-08 04:43:35,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:35,140 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:35,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:35,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1881743361, now seen corresponding path program 8 times [2025-03-08 04:43:35,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:35,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364355815] [2025-03-08 04:43:35,140 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 04:43:35,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:35,153 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 207 statements into 2 equivalence classes. [2025-03-08 04:43:35,226 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 207 of 207 statements. [2025-03-08 04:43:35,226 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 04:43:35,226 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:39,296 INFO L134 CoverageAnalysis]: Checked inductivity of 10100 backedges. 0 proven. 10100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:39,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:39,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364355815] [2025-03-08 04:43:39,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364355815] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:39,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869099025] [2025-03-08 04:43:39,297 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 04:43:39,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:39,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:39,298 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:39,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-08 04:43:39,342 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 207 statements into 2 equivalence classes. [2025-03-08 04:43:39,405 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 207 of 207 statements. [2025-03-08 04:43:39,406 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 04:43:39,406 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:39,410 INFO L256 TraceCheckSpWp]: Trace formula consists of 632 conjuncts, 155 conjuncts are in the unsatisfiable core [2025-03-08 04:43:39,416 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:39,766 INFO L134 CoverageAnalysis]: Checked inductivity of 10100 backedges. 0 proven. 10100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:39,767 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:40,912 INFO L134 CoverageAnalysis]: Checked inductivity of 10100 backedges. 0 proven. 10100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:40,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869099025] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:40,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:40,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105, 105] total 107 [2025-03-08 04:43:40,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934012272] [2025-03-08 04:43:40,914 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:40,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2025-03-08 04:43:40,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:40,915 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2025-03-08 04:43:40,918 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1539, Invalid=9803, Unknown=0, NotChecked=0, Total=11342 [2025-03-08 04:43:40,918 INFO L87 Difference]: Start difference. First operand 208 states and 259 transitions. Second operand has 107 states, 107 states have (on average 1.9813084112149533) internal successors, (212), 107 states have internal predecessors, (212), 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) [2025-03-08 04:43:43,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:43,669 INFO L93 Difference]: Finished difference Result 2965 states and 4392 transitions. [2025-03-08 04:43:43,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2025-03-08 04:43:43,670 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 1.9813084112149533) internal successors, (212), 107 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 207 [2025-03-08 04:43:43,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:43,684 INFO L225 Difference]: With dead ends: 2965 [2025-03-08 04:43:43,684 INFO L226 Difference]: Without dead ends: 2856 [2025-03-08 04:43:43,689 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 360 SyntacticMatches, 52 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4279 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1539, Invalid=9803, Unknown=0, NotChecked=0, Total=11342 [2025-03-08 04:43:43,690 INFO L435 NwaCegarLoop]: 54 mSDtfsCounter, 50 mSDsluCounter, 2866 mSDsCounter, 0 mSdLazyCounter, 8670 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 2920 SdHoareTripleChecker+Invalid, 8723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 8670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:43,691 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 2920 Invalid, 8723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 8670 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-03-08 04:43:43,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2856 states. [2025-03-08 04:43:43,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2856 to 2807. [2025-03-08 04:43:43,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2807 states, 2806 states have (on average 1.0359942979330008) internal successors, (2907), 2806 states have internal predecessors, (2907), 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) [2025-03-08 04:43:43,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2807 states to 2807 states and 2907 transitions. [2025-03-08 04:43:43,913 INFO L78 Accepts]: Start accepts. Automaton has 2807 states and 2907 transitions. Word has length 207 [2025-03-08 04:43:43,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:43,914 INFO L471 AbstractCegarLoop]: Abstraction has 2807 states and 2907 transitions. [2025-03-08 04:43:43,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 107 states have (on average 1.9813084112149533) internal successors, (212), 107 states have internal predecessors, (212), 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) [2025-03-08 04:43:43,914 INFO L276 IsEmpty]: Start isEmpty. Operand 2807 states and 2907 transitions. [2025-03-08 04:43:43,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2025-03-08 04:43:43,916 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:43,916 INFO L218 NwaCegarLoop]: trace histogram [101, 52, 50, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:43,928 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-08 04:43:44,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-03-08 04:43:44,121 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:44,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:44,122 INFO L85 PathProgramCache]: Analyzing trace with hash 237059971, now seen corresponding path program 9 times [2025-03-08 04:43:44,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:44,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028414830] [2025-03-08 04:43:44,122 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 04:43:44,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:44,132 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 209 statements into 102 equivalence classes. [2025-03-08 04:43:44,195 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 102 check-sat command(s) and asserted 209 of 209 statements. [2025-03-08 04:43:44,195 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 102 check-sat command(s) [2025-03-08 04:43:44,195 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:46,300 INFO L134 CoverageAnalysis]: Checked inductivity of 10302 backedges. 5302 proven. 4902 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2025-03-08 04:43:46,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:46,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028414830] [2025-03-08 04:43:46,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028414830] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:46,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484714977] [2025-03-08 04:43:46,301 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 04:43:46,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:46,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:46,303 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:46,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-08 04:43:46,343 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 209 statements into 102 equivalence classes. [2025-03-08 04:43:46,447 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 102 check-sat command(s) and asserted 209 of 209 statements. [2025-03-08 04:43:46,447 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 102 check-sat command(s) [2025-03-08 04:43:46,447 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:46,450 INFO L256 TraceCheckSpWp]: Trace formula consists of 638 conjuncts, 103 conjuncts are in the unsatisfiable core [2025-03-08 04:43:46,454 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:46,698 INFO L134 CoverageAnalysis]: Checked inductivity of 10302 backedges. 5302 proven. 4901 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2025-03-08 04:43:46,698 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:48,366 INFO L134 CoverageAnalysis]: Checked inductivity of 10302 backedges. 5302 proven. 4901 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2025-03-08 04:43:48,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484714977] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:48,366 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:48,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 54, 54] total 55 [2025-03-08 04:43:48,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005862480] [2025-03-08 04:43:48,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:48,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2025-03-08 04:43:48,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:48,367 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2025-03-08 04:43:48,368 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1484, Invalid=1486, Unknown=0, NotChecked=0, Total=2970 [2025-03-08 04:43:48,368 INFO L87 Difference]: Start difference. First operand 2807 states and 2907 transitions. Second operand has 55 states, 55 states have (on average 2.9454545454545453) internal successors, (162), 55 states have internal predecessors, (162), 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) [2025-03-08 04:43:48,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:48,669 INFO L93 Difference]: Finished difference Result 5616 states and 5817 transitions. [2025-03-08 04:43:48,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2025-03-08 04:43:48,670 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.9454545454545453) internal successors, (162), 55 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 209 [2025-03-08 04:43:48,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:48,679 INFO L225 Difference]: With dead ends: 5616 [2025-03-08 04:43:48,680 INFO L226 Difference]: Without dead ends: 2809 [2025-03-08 04:43:48,696 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 365 SyntacticMatches, 102 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3338 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1484, Invalid=1486, Unknown=0, NotChecked=0, Total=2970 [2025-03-08 04:43:48,696 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:48,696 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 04:43:48,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2809 states. [2025-03-08 04:43:48,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2809 to 2809. [2025-03-08 04:43:48,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2809 states, 2808 states have (on average 1.035968660968661) internal successors, (2909), 2808 states have internal predecessors, (2909), 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) [2025-03-08 04:43:48,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2809 states to 2809 states and 2909 transitions. [2025-03-08 04:43:48,874 INFO L78 Accepts]: Start accepts. Automaton has 2809 states and 2909 transitions. Word has length 209 [2025-03-08 04:43:48,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:48,875 INFO L471 AbstractCegarLoop]: Abstraction has 2809 states and 2909 transitions. [2025-03-08 04:43:48,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.9454545454545453) internal successors, (162), 55 states have internal predecessors, (162), 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) [2025-03-08 04:43:48,875 INFO L276 IsEmpty]: Start isEmpty. Operand 2809 states and 2909 transitions. [2025-03-08 04:43:48,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2025-03-08 04:43:48,877 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:48,877 INFO L218 NwaCegarLoop]: trace histogram [102, 52, 51, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:48,886 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-08 04:43:49,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:49,078 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:49,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:49,078 INFO L85 PathProgramCache]: Analyzing trace with hash 763579396, now seen corresponding path program 10 times [2025-03-08 04:43:49,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:49,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944876618] [2025-03-08 04:43:49,079 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 04:43:49,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:49,087 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 211 statements into 2 equivalence classes. [2025-03-08 04:43:49,109 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 211 of 211 statements. [2025-03-08 04:43:49,109 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 04:43:49,109 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:50,302 INFO L134 CoverageAnalysis]: Checked inductivity of 10506 backedges. 7802 proven. 0 refuted. 0 times theorem prover too weak. 2704 trivial. 0 not checked. [2025-03-08 04:43:50,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:50,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944876618] [2025-03-08 04:43:50,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944876618] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 04:43:50,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 04:43:50,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [] total 53 [2025-03-08 04:43:50,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760322394] [2025-03-08 04:43:50,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 04:43:50,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2025-03-08 04:43:50,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:50,304 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2025-03-08 04:43:50,304 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2025-03-08 04:43:50,305 INFO L87 Difference]: Start difference. First operand 2809 states and 2909 transitions. Second operand has 53 states, 53 states have (on average 2.056603773584906) internal successors, (109), 53 states have internal predecessors, (109), 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) [2025-03-08 04:43:50,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:50,501 INFO L93 Difference]: Finished difference Result 2809 states and 2909 transitions. [2025-03-08 04:43:50,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2025-03-08 04:43:50,502 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.056603773584906) internal successors, (109), 53 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 211 [2025-03-08 04:43:50,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:50,504 INFO L225 Difference]: With dead ends: 2809 [2025-03-08 04:43:50,504 INFO L226 Difference]: Without dead ends: 0 [2025-03-08 04:43:50,509 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2025-03-08 04:43:50,510 INFO L435 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:50,510 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 7 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:50,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-03-08 04:43:50,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-03-08 04:43:50,511 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) [2025-03-08 04:43:50,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-03-08 04:43:50,513 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 211 [2025-03-08 04:43:50,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:50,513 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-03-08 04:43:50,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.056603773584906) internal successors, (109), 53 states have internal predecessors, (109), 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) [2025-03-08 04:43:50,513 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-03-08 04:43:50,513 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-03-08 04:43:50,516 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-03-08 04:43:50,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-08 04:43:50,519 INFO L422 BasicCegarLoop]: Path program histogram: [10, 1, 1, 1] [2025-03-08 04:43:50,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2025-03-08 04:43:51,778 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-08 04:43:51,813 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.03 04:43:51 BoogieIcfgContainer [2025-03-08 04:43:51,813 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-08 04:43:51,814 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-08 04:43:51,814 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-08 04:43:51,814 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-08 04:43:51,814 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 04:43:26" (3/4) ... [2025-03-08 04:43:51,817 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-08 04:43:51,826 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2025-03-08 04:43:51,826 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-03-08 04:43:51,826 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-03-08 04:43:51,826 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-03-08 04:43:51,879 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-08 04:43:51,880 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-08 04:43:51,880 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-08 04:43:51,880 INFO L158 Benchmark]: Toolchain (without parser) took 26109.11ms. Allocated memory was 167.8MB in the beginning and 679.5MB in the end (delta: 511.7MB). Free memory was 132.9MB in the beginning and 269.0MB in the end (delta: -136.1MB). Peak memory consumption was 370.7MB. Max. memory is 16.1GB. [2025-03-08 04:43:51,880 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 201.3MB. Free memory is still 126.9MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 04:43:51,881 INFO L158 Benchmark]: CACSL2BoogieTranslator took 163.64ms. Allocated memory is still 167.8MB. Free memory was 132.5MB in the beginning and 121.7MB in the end (delta: 10.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-08 04:43:51,881 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.35ms. Allocated memory is still 167.8MB. Free memory was 121.7MB in the beginning and 120.7MB in the end (delta: 952.6kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 04:43:51,881 INFO L158 Benchmark]: Boogie Preprocessor took 20.92ms. Allocated memory is still 167.8MB. Free memory was 120.7MB in the beginning and 119.8MB in the end (delta: 931.7kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 04:43:51,881 INFO L158 Benchmark]: IcfgBuilder took 194.01ms. Allocated memory is still 167.8MB. Free memory was 119.8MB in the beginning and 108.8MB in the end (delta: 10.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-08 04:43:51,881 INFO L158 Benchmark]: TraceAbstraction took 25639.34ms. Allocated memory was 167.8MB in the beginning and 679.5MB in the end (delta: 511.7MB). Free memory was 108.4MB in the beginning and 273.2MB in the end (delta: -164.8MB). Peak memory consumption was 367.9MB. Max. memory is 16.1GB. [2025-03-08 04:43:51,882 INFO L158 Benchmark]: Witness Printer took 66.23ms. Allocated memory is still 679.5MB. Free memory was 273.2MB in the beginning and 269.0MB in the end (delta: 4.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 04:43:51,883 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 201.3MB. Free memory is still 126.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 163.64ms. Allocated memory is still 167.8MB. Free memory was 132.5MB in the beginning and 121.7MB in the end (delta: 10.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.35ms. Allocated memory is still 167.8MB. Free memory was 121.7MB in the beginning and 120.7MB in the end (delta: 952.6kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 20.92ms. Allocated memory is still 167.8MB. Free memory was 120.7MB in the beginning and 119.8MB in the end (delta: 931.7kB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 194.01ms. Allocated memory is still 167.8MB. Free memory was 119.8MB in the beginning and 108.8MB in the end (delta: 10.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 25639.34ms. Allocated memory was 167.8MB in the beginning and 679.5MB in the end (delta: 511.7MB). Free memory was 108.4MB in the beginning and 273.2MB in the end (delta: -164.8MB). Peak memory consumption was 367.9MB. Max. memory is 16.1GB. * Witness Printer took 66.23ms. Allocated memory is still 679.5MB. Free memory was 273.2MB in the beginning and 269.0MB in the end (delta: 4.1MB). 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: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 15 edges, 1 error locations. Started 1 CEGAR loops. OverallTime: 24.3s, OverallIterations: 13, TraceHistogramMax: 102, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.0s, AutomataDifference: 4.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 63 SdHoareTripleChecker+Valid, 3.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 63 mSDsluCounter, 3144 SdHoareTripleChecker+Invalid, 2.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3011 mSDsCounter, 178 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10339 IncrementalHoareTripleChecker+Invalid, 10517 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 178 mSolverCounterUnsat, 133 mSDtfsCounter, 10339 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1833 GetRequests, 1191 SyntacticMatches, 190 SemanticMatches, 452 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13282 ImplicationChecksByTransitivity, 10.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2809occurred in iteration=12, InterpolantAutomatonStates: 418, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 13 MinimizatonAttempts, 573 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 16.3s InterpolantComputationTime, 1697 NumberOfCodeBlocks, 1697 NumberOfCodeBlocksAsserted, 357 NumberOfCheckSat, 2399 ConstructedInterpolants, 0 QuantifiedInterpolants, 6526 SizeOfPredicates, 0 NumberOfNonLiveVariables, 2298 ConjunctsInSsa, 394 ConjunctsInUnsatCore, 31 InterpolantComputations, 4 PerfectInterpolantSequences, 37893/86604 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 - InvariantResult [Line: 28]: Location Invariant Derived location invariant: ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((2 == y) && (98 == x)) || ((44 == y) && (44 == x))) || ((x == 15) && (y == 15))) || ((y == 39) && (x == 39))) || ((y == 33) && (x == 33))) || ((6 == y) && (6 == x))) || ((35 == y) && (x == 65))) || ((y == 10) && (x == 90))) || ((87 == x) && (y == 13))) || ((x == 1) && (y == 1))) || ((x == 63) && (y == 37))) || ((23 == y) && (23 == x))) || ((x == 86) && (14 == y))) || ((y == 28) && (x == 28))) || ((x == 24) && (y == 24))) || ((x == 13) && (y == 13))) || ((x == 26) && (y == 26))) || ((7 == y) && (7 == x))) || ((23 == y) && (77 == x))) || ((y == 12) && (88 == x))) || ((56 == x) && (44 == y))) || ((x == 25) && (y == 25))) || ((21 == y) && (21 == x))) || ((22 == y) && (x == 78))) || ((40 == y) && (40 == x))) || ((92 == x) && (y == 8))) || ((x == 8) && (y == 8))) || ((x == 34) && (y == 34))) || ((y == 26) && (x == 74))) || ((19 == x) && (19 == y))) || ((x == 36) && (y == 36))) || ((y == 43) && (57 == x))) || ((x == 54) && (46 == y))) || ((x == 11) && (y == 11))) || ((16 == x) && (16 == y))) || ((69 == x) && (31 == y))) || ((49 == x) && (49 == y))) || ((76 == x) && (y == 24))) || ((x == 73) && (y == 27))) || ((47 == y) && (47 == x))) || ((35 == y) && (35 == x))) || ((51 == x) && (49 == y))) || ((y == 18) && (82 == x))) || ((y == 10) && (x == 10))) || ((x == 96) && (y == 4))) || ((x == 58) && (42 == y))) || ((3 == y) && (97 == x))) || ((x == 37) && (y == 37))) || ((x == 75) && (y == 25))) || ((89 == x) && (y == 11))) || ((3 == x) && (3 == y))) || ((5 == x) && (5 == y))) || ((41 == y) && (59 == x))) || ((y == 17) && (x == 17))) || ((y == 28) && (72 == x))) || ((x == 70) && (30 == y))) || ((14 == y) && (14 == x))) || ((y == 39) && (x == 61))) || ((32 == y) && (32 == x))) || ((x == 60) && (40 == y))) || ((22 == y) && (22 == x))) || ((91 == x) && (9 == y))) || ((7 == y) && (x == 93))) || ((31 == x) && (31 == y))) || ((y == 27) && (x == 27))) || ((y == 0) && (x == 0))) || ((y == 12) && (x == 12))) || ((71 == x) && (29 == y))) || ((47 == y) && (53 == x))) || ((2 == x) && (2 == y))) || ((32 == y) && (68 == x))) || ((x == 83) && (y == 17))) || ((9 == x) && (9 == y))) || ((46 == y) && (46 == x))) || ((30 == x) && (30 == y))) || ((y == 34) && (66 == x))) || ((y == 48) && (52 == x))) || ((5 == y) && (95 == x))) || ((y == 20) && (x == 20))) || ((42 == y) && (42 == x))) || ((x == 18) && (y == 18))) || ((y == 45) && (x == 55))) || ((y == 38) && (62 == x))) || ((41 == y) && (41 == x))) || ((y == 20) && (x == 80))) || ((y == 43) && (x == 43))) || ((x == 79) && (21 == y))) || ((29 == x) && (29 == y))) || ((y == 4) && (x == 4))) || ((16 == y) && (84 == x))) || ((x == 85) && (y == 15))) || ((x == 99) && (y == 1))) || ((x == 100) && (y == 0))) || ((y == 50) && (x == 50))) || ((6 == y) && (94 == x))) || ((81 == x) && (19 == y))) || ((y == 45) && (x == 45))) || ((y == 48) && (x == 48))) || ((x == 38) && (y == 38))) || ((64 == x) && (y == 36))) || ((y == 33) && (67 == x))) RESULT: Ultimate proved your program to be correct! [2025-03-08 04:43:51,900 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/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