./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/zonotope_3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/zonotope_3.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c1619194307da84227512f62eb582bffd66266544ce804bd80ee6a40fe157ac7 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-07 18:30:15,312 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-07 18:30:15,388 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-07 18:30:15,394 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-07 18:30:15,396 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-07 18:30:15,421 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-07 18:30:15,423 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-07 18:30:15,423 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-07 18:30:15,424 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-07 18:30:15,424 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-07 18:30:15,425 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-07 18:30:15,425 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-07 18:30:15,426 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-07 18:30:15,426 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-07 18:30:15,426 INFO L153 SettingsManager]: * Use SBE=true [2025-02-07 18:30:15,426 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-07 18:30:15,426 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-07 18:30:15,427 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-07 18:30:15,427 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-07 18:30:15,427 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-07 18:30:15,427 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-07 18:30:15,427 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-07 18:30:15,427 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-07 18:30:15,427 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-07 18:30:15,427 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-07 18:30:15,427 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-07 18:30:15,427 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-07 18:30:15,428 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-07 18:30:15,428 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-07 18:30:15,428 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-07 18:30:15,428 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-07 18:30:15,429 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-07 18:30:15,429 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 18:30:15,429 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-07 18:30:15,429 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-07 18:30:15,429 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-07 18:30:15,429 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-07 18:30:15,429 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-07 18:30:15,430 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-07 18:30:15,430 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-07 18:30:15,430 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-07 18:30:15,430 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-07 18:30:15,430 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-07 18:30:15,430 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c1619194307da84227512f62eb582bffd66266544ce804bd80ee6a40fe157ac7 [2025-02-07 18:30:15,734 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-07 18:30:15,743 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-07 18:30:15,747 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-07 18:30:15,749 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-07 18:30:15,749 INFO L274 PluginConnector]: CDTParser initialized [2025-02-07 18:30:15,750 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/zonotope_3.c [2025-02-07 18:30:16,943 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/922b2d417/acb700b4d94e497ca5d015e1469cda19/FLAGa7474e745 [2025-02-07 18:30:17,261 INFO L384 CDTParser]: Found 1 translation units. [2025-02-07 18:30:17,261 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/float-benchs/zonotope_3.c [2025-02-07 18:30:17,271 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/922b2d417/acb700b4d94e497ca5d015e1469cda19/FLAGa7474e745 [2025-02-07 18:30:17,556 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/922b2d417/acb700b4d94e497ca5d015e1469cda19 [2025-02-07 18:30:17,558 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-07 18:30:17,559 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-07 18:30:17,560 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-07 18:30:17,560 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-07 18:30:17,563 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-07 18:30:17,564 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 06:30:17" (1/1) ... [2025-02-07 18:30:17,566 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44244e00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:30:17, skipping insertion in model container [2025-02-07 18:30:17,566 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 06:30:17" (1/1) ... [2025-02-07 18:30:17,578 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-07 18:30:17,702 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/float-benchs/zonotope_3.c[604,617] [2025-02-07 18:30:17,722 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 18:30:17,730 INFO L200 MainTranslator]: Completed pre-run [2025-02-07 18:30:17,739 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/float-benchs/zonotope_3.c[604,617] [2025-02-07 18:30:17,745 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 18:30:17,758 INFO L204 MainTranslator]: Completed translation [2025-02-07 18:30:17,758 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:30:17 WrapperNode [2025-02-07 18:30:17,759 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-07 18:30:17,760 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-07 18:30:17,760 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-07 18:30:17,760 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-07 18:30:17,765 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:30:17" (1/1) ... [2025-02-07 18:30:17,773 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:30:17" (1/1) ... [2025-02-07 18:30:17,788 INFO L138 Inliner]: procedures = 16, calls = 17, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 62 [2025-02-07 18:30:17,790 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-07 18:30:17,790 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-07 18:30:17,790 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-07 18:30:17,790 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-07 18:30:17,796 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:30:17" (1/1) ... [2025-02-07 18:30:17,796 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:30:17" (1/1) ... [2025-02-07 18:30:17,798 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:30:17" (1/1) ... [2025-02-07 18:30:17,811 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]. [2025-02-07 18:30:17,815 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:30:17" (1/1) ... [2025-02-07 18:30:17,815 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:30:17" (1/1) ... [2025-02-07 18:30:17,818 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:30:17" (1/1) ... [2025-02-07 18:30:17,821 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:30:17" (1/1) ... [2025-02-07 18:30:17,821 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:30:17" (1/1) ... [2025-02-07 18:30:17,825 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:30:17" (1/1) ... [2025-02-07 18:30:17,827 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-07 18:30:17,827 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-07 18:30:17,828 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-07 18:30:17,828 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-07 18:30:17,828 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:30:17" (1/1) ... [2025-02-07 18:30:17,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 18:30:17,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 18:30:17,860 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-07 18:30:17,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-07 18:30:17,884 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-07 18:30:17,885 INFO L130 BoogieDeclarations]: Found specification of procedure f [2025-02-07 18:30:17,885 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2025-02-07 18:30:17,885 INFO L130 BoogieDeclarations]: Found specification of procedure g [2025-02-07 18:30:17,885 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2025-02-07 18:30:17,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-07 18:30:17,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-07 18:30:17,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-07 18:30:17,943 INFO L257 CfgBuilder]: Building ICFG [2025-02-07 18:30:17,946 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-07 18:30:18,076 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2025-02-07 18:30:18,077 INFO L308 CfgBuilder]: Performing block encoding [2025-02-07 18:30:18,084 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-07 18:30:18,084 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-07 18:30:18,085 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 06:30:18 BoogieIcfgContainer [2025-02-07 18:30:18,085 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-07 18:30:18,088 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-07 18:30:18,088 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-07 18:30:18,092 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-07 18:30:18,093 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 06:30:17" (1/3) ... [2025-02-07 18:30:18,094 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cb6e318 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 06:30:18, skipping insertion in model container [2025-02-07 18:30:18,094 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:30:17" (2/3) ... [2025-02-07 18:30:18,094 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cb6e318 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 06:30:18, skipping insertion in model container [2025-02-07 18:30:18,094 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 06:30:18" (3/3) ... [2025-02-07 18:30:18,095 INFO L128 eAbstractionObserver]: Analyzing ICFG zonotope_3.c [2025-02-07 18:30:18,107 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-07 18:30:18,109 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG zonotope_3.c that has 3 procedures, 32 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-02-07 18:30:18,151 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-07 18:30:18,161 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;@50d3b2b2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-07 18:30:18,161 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-07 18:30:18,164 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 20 states have (on average 1.2) internal successors, (24), 21 states have internal predecessors, (24), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2025-02-07 18:30:18,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-02-07 18:30:18,169 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 18:30:18,170 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 18:30:18,170 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 18:30:18,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 18:30:18,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1879505073, now seen corresponding path program 1 times [2025-02-07 18:30:18,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 18:30:18,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932720363] [2025-02-07 18:30:18,184 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 18:30:18,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 18:30:18,251 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-07 18:30:18,274 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-07 18:30:18,274 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 18:30:18,274 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 18:30:18,407 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-07 18:30:18,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 18:30:18,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932720363] [2025-02-07 18:30:18,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932720363] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 18:30:18,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 18:30:18,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-07 18:30:18,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305411230] [2025-02-07 18:30:18,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 18:30:18,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-07 18:30:18,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 18:30:18,432 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-07 18:30:18,433 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-07 18:30:18,434 INFO L87 Difference]: Start difference. First operand has 32 states, 20 states have (on average 1.2) internal successors, (24), 21 states have internal predecessors, (24), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-02-07 18:30:18,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 18:30:18,474 INFO L93 Difference]: Finished difference Result 66 states and 84 transitions. [2025-02-07 18:30:18,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-07 18:30:18,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 24 [2025-02-07 18:30:18,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 18:30:18,484 INFO L225 Difference]: With dead ends: 66 [2025-02-07 18:30:18,484 INFO L226 Difference]: Without dead ends: 40 [2025-02-07 18:30:18,486 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-07 18:30:18,490 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 6 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 18:30:18,491 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 68 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 18:30:18,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2025-02-07 18:30:18,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 30. [2025-02-07 18:30:18,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2025-02-07 18:30:18,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2025-02-07 18:30:18,527 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 24 [2025-02-07 18:30:18,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 18:30:18,527 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2025-02-07 18:30:18,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-02-07 18:30:18,527 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2025-02-07 18:30:18,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2025-02-07 18:30:18,531 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 18:30:18,531 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 18:30:18,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-07 18:30:18,532 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 18:30:18,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 18:30:18,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1914321906, now seen corresponding path program 1 times [2025-02-07 18:30:18,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 18:30:18,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325955648] [2025-02-07 18:30:18,533 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 18:30:18,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 18:30:18,559 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 47 statements into 1 equivalence classes. [2025-02-07 18:30:18,577 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 47 of 47 statements. [2025-02-07 18:30:18,580 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 18:30:18,580 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 18:30:18,713 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-02-07 18:30:18,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 18:30:18,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325955648] [2025-02-07 18:30:18,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325955648] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 18:30:18,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701035769] [2025-02-07 18:30:18,716 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 18:30:18,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 18:30:18,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 18:30:18,720 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 18:30:18,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-07 18:30:18,785 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 47 statements into 1 equivalence classes. [2025-02-07 18:30:18,822 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 47 of 47 statements. [2025-02-07 18:30:18,823 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 18:30:18,823 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 18:30:18,825 INFO L256 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-07 18:30:18,830 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 18:30:18,899 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-02-07 18:30:18,899 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 18:30:18,983 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-02-07 18:30:18,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701035769] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 18:30:18,984 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 18:30:18,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-02-07 18:30:18,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226561574] [2025-02-07 18:30:18,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 18:30:18,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-07 18:30:18,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 18:30:18,987 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-07 18:30:18,987 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-02-07 18:30:18,987 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2025-02-07 18:30:19,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 18:30:19,086 INFO L93 Difference]: Finished difference Result 66 states and 86 transitions. [2025-02-07 18:30:19,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-07 18:30:19,088 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 47 [2025-02-07 18:30:19,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 18:30:19,089 INFO L225 Difference]: With dead ends: 66 [2025-02-07 18:30:19,089 INFO L226 Difference]: Without dead ends: 63 [2025-02-07 18:30:19,090 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-02-07 18:30:19,090 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 12 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 18:30:19,090 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 74 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 18:30:19,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2025-02-07 18:30:19,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2025-02-07 18:30:19,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 40 states have (on average 1.025) internal successors, (41), 40 states have internal predecessors, (41), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-02-07 18:30:19,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 81 transitions. [2025-02-07 18:30:19,105 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 81 transitions. Word has length 47 [2025-02-07 18:30:19,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 18:30:19,106 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 81 transitions. [2025-02-07 18:30:19,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2025-02-07 18:30:19,106 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 81 transitions. [2025-02-07 18:30:19,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2025-02-07 18:30:19,111 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 18:30:19,112 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 18:30:19,120 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-07 18:30:19,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 18:30:19,313 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 18:30:19,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 18:30:19,314 INFO L85 PathProgramCache]: Analyzing trace with hash 180740239, now seen corresponding path program 2 times [2025-02-07 18:30:19,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 18:30:19,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688703638] [2025-02-07 18:30:19,314 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 18:30:19,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 18:30:19,336 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 116 statements into 2 equivalence classes. [2025-02-07 18:30:19,356 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 116 of 116 statements. [2025-02-07 18:30:19,357 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 18:30:19,357 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 18:30:19,597 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2025-02-07 18:30:19,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 18:30:19,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688703638] [2025-02-07 18:30:19,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688703638] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 18:30:19,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128309120] [2025-02-07 18:30:19,597 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 18:30:19,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 18:30:19,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 18:30:19,601 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 18:30:19,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-07 18:30:19,671 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 116 statements into 2 equivalence classes. [2025-02-07 18:30:19,712 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 116 of 116 statements. [2025-02-07 18:30:19,712 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 18:30:19,712 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 18:30:19,714 INFO L256 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-07 18:30:19,722 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 18:30:19,821 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2025-02-07 18:30:19,823 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 18:30:20,037 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2025-02-07 18:30:20,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128309120] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 18:30:20,038 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 18:30:20,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-02-07 18:30:20,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632674017] [2025-02-07 18:30:20,039 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 18:30:20,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-07 18:30:20,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 18:30:20,041 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-07 18:30:20,041 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-02-07 18:30:20,041 INFO L87 Difference]: Start difference. First operand 63 states and 81 transitions. Second operand has 13 states, 13 states have (on average 6.0) internal successors, (78), 13 states have internal predecessors, (78), 10 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) [2025-02-07 18:30:20,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 18:30:20,212 INFO L93 Difference]: Finished difference Result 132 states and 179 transitions. [2025-02-07 18:30:20,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-07 18:30:20,213 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.0) internal successors, (78), 13 states have internal predecessors, (78), 10 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) Word has length 116 [2025-02-07 18:30:20,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 18:30:20,215 INFO L225 Difference]: With dead ends: 132 [2025-02-07 18:30:20,215 INFO L226 Difference]: Without dead ends: 129 [2025-02-07 18:30:20,215 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-02-07 18:30:20,216 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 12 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 18:30:20,216 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 125 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 18:30:20,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2025-02-07 18:30:20,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2025-02-07 18:30:20,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 82 states have (on average 1.0121951219512195) internal successors, (83), 82 states have internal predecessors, (83), 44 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2025-02-07 18:30:20,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 171 transitions. [2025-02-07 18:30:20,242 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 171 transitions. Word has length 116 [2025-02-07 18:30:20,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 18:30:20,243 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 171 transitions. [2025-02-07 18:30:20,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.0) internal successors, (78), 13 states have internal predecessors, (78), 10 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) [2025-02-07 18:30:20,243 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 171 transitions. [2025-02-07 18:30:20,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2025-02-07 18:30:20,249 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 18:30:20,250 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 18:30:20,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-07 18:30:20,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 18:30:20,450 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 18:30:20,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 18:30:20,451 INFO L85 PathProgramCache]: Analyzing trace with hash -498503057, now seen corresponding path program 3 times [2025-02-07 18:30:20,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 18:30:20,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308346968] [2025-02-07 18:30:20,451 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 18:30:20,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 18:30:20,480 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 254 statements into 18 equivalence classes. [2025-02-07 18:30:20,531 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) and asserted 244 of 254 statements. [2025-02-07 18:30:20,531 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2025-02-07 18:30:20,531 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 18:30:20,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 505 refuted. 0 times theorem prover too weak. 1386 trivial. 0 not checked. [2025-02-07 18:30:20,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 18:30:20,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308346968] [2025-02-07 18:30:20,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308346968] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 18:30:20,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261260649] [2025-02-07 18:30:20,885 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 18:30:20,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 18:30:20,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 18:30:20,889 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 18:30:20,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-07 18:30:20,989 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 254 statements into 18 equivalence classes. [2025-02-07 18:30:21,067 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) and asserted 244 of 254 statements. [2025-02-07 18:30:21,068 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2025-02-07 18:30:21,068 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 18:30:21,070 INFO L256 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-07 18:30:21,077 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 18:30:21,287 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 505 refuted. 0 times theorem prover too weak. 1386 trivial. 0 not checked. [2025-02-07 18:30:21,288 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 18:30:21,810 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 505 refuted. 0 times theorem prover too weak. 1386 trivial. 0 not checked. [2025-02-07 18:30:21,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261260649] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 18:30:21,810 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 18:30:21,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2025-02-07 18:30:21,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405404373] [2025-02-07 18:30:21,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 18:30:21,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-07 18:30:21,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 18:30:21,815 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-07 18:30:21,816 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-02-07 18:30:21,817 INFO L87 Difference]: Start difference. First operand 129 states and 171 transitions. Second operand has 25 states, 25 states have (on average 6.48) internal successors, (162), 25 states have internal predecessors, (162), 22 states have call successors, (88), 1 states have call predecessors, (88), 1 states have return successors, (88), 22 states have call predecessors, (88), 22 states have call successors, (88) [2025-02-07 18:30:22,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 18:30:22,083 INFO L93 Difference]: Finished difference Result 264 states and 365 transitions. [2025-02-07 18:30:22,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-02-07 18:30:22,083 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 6.48) internal successors, (162), 25 states have internal predecessors, (162), 22 states have call successors, (88), 1 states have call predecessors, (88), 1 states have return successors, (88), 22 states have call predecessors, (88), 22 states have call successors, (88) Word has length 254 [2025-02-07 18:30:22,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 18:30:22,086 INFO L225 Difference]: With dead ends: 264 [2025-02-07 18:30:22,087 INFO L226 Difference]: Without dead ends: 261 [2025-02-07 18:30:22,087 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 496 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-02-07 18:30:22,088 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 12 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-07 18:30:22,088 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 269 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-07 18:30:22,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2025-02-07 18:30:22,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 261. [2025-02-07 18:30:22,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 166 states have (on average 1.0060240963855422) internal successors, (167), 166 states have internal predecessors, (167), 92 states have call successors, (92), 2 states have call predecessors, (92), 2 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2025-02-07 18:30:22,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 351 transitions. [2025-02-07 18:30:22,127 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 351 transitions. Word has length 254 [2025-02-07 18:30:22,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 18:30:22,132 INFO L471 AbstractCegarLoop]: Abstraction has 261 states and 351 transitions. [2025-02-07 18:30:22,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 6.48) internal successors, (162), 25 states have internal predecessors, (162), 22 states have call successors, (88), 1 states have call predecessors, (88), 1 states have return successors, (88), 22 states have call predecessors, (88), 22 states have call successors, (88) [2025-02-07 18:30:22,132 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 351 transitions. [2025-02-07 18:30:22,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2025-02-07 18:30:22,146 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 18:30:22,146 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 18:30:22,155 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-07 18:30:22,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 18:30:22,348 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 18:30:22,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 18:30:22,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1993739823, now seen corresponding path program 4 times [2025-02-07 18:30:22,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 18:30:22,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735583252] [2025-02-07 18:30:22,352 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-07 18:30:22,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 18:30:22,409 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 530 statements into 2 equivalence classes. [2025-02-07 18:30:22,448 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 530 of 530 statements. [2025-02-07 18:30:22,449 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-07 18:30:22,449 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 18:30:23,597 INFO L134 CoverageAnalysis]: Checked inductivity of 8773 backedges. 0 proven. 2563 refuted. 0 times theorem prover too weak. 6210 trivial. 0 not checked. [2025-02-07 18:30:23,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 18:30:23,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735583252] [2025-02-07 18:30:23,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735583252] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 18:30:23,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71281978] [2025-02-07 18:30:23,598 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-07 18:30:23,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 18:30:23,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 18:30:23,600 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 18:30:23,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-07 18:30:23,731 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 530 statements into 2 equivalence classes. [2025-02-07 18:30:23,871 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 530 of 530 statements. [2025-02-07 18:30:23,871 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-07 18:30:23,871 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 18:30:23,880 INFO L256 TraceCheckSpWp]: Trace formula consists of 1175 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-02-07 18:30:23,892 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 18:30:24,230 INFO L134 CoverageAnalysis]: Checked inductivity of 8773 backedges. 0 proven. 2563 refuted. 0 times theorem prover too weak. 6210 trivial. 0 not checked. [2025-02-07 18:30:24,231 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 18:30:25,631 INFO L134 CoverageAnalysis]: Checked inductivity of 8773 backedges. 0 proven. 2563 refuted. 0 times theorem prover too weak. 6210 trivial. 0 not checked. [2025-02-07 18:30:25,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71281978] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 18:30:25,631 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 18:30:25,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 48 [2025-02-07 18:30:25,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013490328] [2025-02-07 18:30:25,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 18:30:25,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2025-02-07 18:30:25,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 18:30:25,637 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2025-02-07 18:30:25,640 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2025-02-07 18:30:25,641 INFO L87 Difference]: Start difference. First operand 261 states and 351 transitions. Second operand has 48 states, 48 states have (on average 6.708333333333333) internal successors, (322), 48 states have internal predecessors, (322), 45 states have call successors, (180), 1 states have call predecessors, (180), 1 states have return successors, (180), 45 states have call predecessors, (180), 45 states have call successors, (180) [2025-02-07 18:30:26,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 18:30:26,303 INFO L93 Difference]: Finished difference Result 528 states and 737 transitions. [2025-02-07 18:30:26,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2025-02-07 18:30:26,304 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 6.708333333333333) internal successors, (322), 48 states have internal predecessors, (322), 45 states have call successors, (180), 1 states have call predecessors, (180), 1 states have return successors, (180), 45 states have call predecessors, (180), 45 states have call successors, (180) Word has length 530 [2025-02-07 18:30:26,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 18:30:26,312 INFO L225 Difference]: With dead ends: 528 [2025-02-07 18:30:26,314 INFO L226 Difference]: Without dead ends: 525 [2025-02-07 18:30:26,316 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1083 GetRequests, 1037 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2025-02-07 18:30:26,318 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 12 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-07 18:30:26,319 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 342 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-07 18:30:26,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2025-02-07 18:30:26,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 525. [2025-02-07 18:30:26,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 334 states have (on average 1.0029940119760479) internal successors, (335), 334 states have internal predecessors, (335), 188 states have call successors, (188), 2 states have call predecessors, (188), 2 states have return successors, (188), 188 states have call predecessors, (188), 188 states have call successors, (188) [2025-02-07 18:30:26,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 711 transitions. [2025-02-07 18:30:26,383 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 711 transitions. Word has length 530 [2025-02-07 18:30:26,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 18:30:26,386 INFO L471 AbstractCegarLoop]: Abstraction has 525 states and 711 transitions. [2025-02-07 18:30:26,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 6.708333333333333) internal successors, (322), 48 states have internal predecessors, (322), 45 states have call successors, (180), 1 states have call predecessors, (180), 1 states have return successors, (180), 45 states have call predecessors, (180), 45 states have call successors, (180) [2025-02-07 18:30:26,387 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 711 transitions. [2025-02-07 18:30:26,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1083 [2025-02-07 18:30:26,426 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 18:30:26,426 INFO L218 NwaCegarLoop]: trace histogram [94, 94, 94, 94, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 18:30:26,436 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-07 18:30:26,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 18:30:26,627 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 18:30:26,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 18:30:26,628 INFO L85 PathProgramCache]: Analyzing trace with hash 42804655, now seen corresponding path program 5 times [2025-02-07 18:30:26,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 18:30:26,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482138328] [2025-02-07 18:30:26,628 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-07 18:30:26,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 18:30:26,703 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 1082 statements into 74 equivalence classes. [2025-02-07 18:30:26,871 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 74 check-sat command(s) and asserted 1082 of 1082 statements. [2025-02-07 18:30:26,872 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 74 check-sat command(s) [2025-02-07 18:30:26,872 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 18:30:31,460 INFO L134 CoverageAnalysis]: Checked inductivity of 37657 backedges. 0 proven. 11431 refuted. 0 times theorem prover too weak. 26226 trivial. 0 not checked. [2025-02-07 18:30:31,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 18:30:31,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482138328] [2025-02-07 18:30:31,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482138328] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 18:30:31,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211706046] [2025-02-07 18:30:31,461 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-07 18:30:31,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 18:30:31,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 18:30:31,463 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 18:30:31,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-07 18:30:31,708 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 1082 statements into 74 equivalence classes. [2025-02-07 18:30:32,137 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 74 check-sat command(s) and asserted 1082 of 1082 statements. [2025-02-07 18:30:32,137 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 74 check-sat command(s) [2025-02-07 18:30:32,137 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 18:30:32,144 INFO L256 TraceCheckSpWp]: Trace formula consists of 2375 conjuncts, 48 conjuncts are in the unsatisfiable core [2025-02-07 18:30:32,161 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 18:30:32,767 INFO L134 CoverageAnalysis]: Checked inductivity of 37657 backedges. 0 proven. 11431 refuted. 0 times theorem prover too weak. 26226 trivial. 0 not checked. [2025-02-07 18:30:32,767 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 18:30:36,076 INFO L134 CoverageAnalysis]: Checked inductivity of 37657 backedges. 0 proven. 11431 refuted. 0 times theorem prover too weak. 26226 trivial. 0 not checked. [2025-02-07 18:30:36,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211706046] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 18:30:36,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 18:30:36,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 96 [2025-02-07 18:30:36,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427972598] [2025-02-07 18:30:36,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 18:30:36,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2025-02-07 18:30:36,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 18:30:36,083 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2025-02-07 18:30:36,087 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2025-02-07 18:30:36,089 INFO L87 Difference]: Start difference. First operand 525 states and 711 transitions. Second operand has 96 states, 96 states have (on average 6.854166666666667) internal successors, (658), 96 states have internal predecessors, (658), 93 states have call successors, (372), 1 states have call predecessors, (372), 1 states have return successors, (372), 93 states have call predecessors, (372), 93 states have call successors, (372) [2025-02-07 18:30:37,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 18:30:37,349 INFO L93 Difference]: Finished difference Result 1056 states and 1481 transitions. [2025-02-07 18:30:37,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2025-02-07 18:30:37,351 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 6.854166666666667) internal successors, (658), 96 states have internal predecessors, (658), 93 states have call successors, (372), 1 states have call predecessors, (372), 1 states have return successors, (372), 93 states have call predecessors, (372), 93 states have call successors, (372) Word has length 1082 [2025-02-07 18:30:37,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 18:30:37,362 INFO L225 Difference]: With dead ends: 1056 [2025-02-07 18:30:37,362 INFO L226 Difference]: Without dead ends: 1053 [2025-02-07 18:30:37,366 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2211 GetRequests, 2117 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2025-02-07 18:30:37,367 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 12 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-02-07 18:30:37,368 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 582 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-02-07 18:30:37,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1053 states. [2025-02-07 18:30:37,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1053 to 1053. [2025-02-07 18:30:37,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1053 states, 670 states have (on average 1.001492537313433) internal successors, (671), 670 states have internal predecessors, (671), 380 states have call successors, (380), 2 states have call predecessors, (380), 2 states have return successors, (380), 380 states have call predecessors, (380), 380 states have call successors, (380) [2025-02-07 18:30:37,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 1431 transitions. [2025-02-07 18:30:37,429 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 1431 transitions. Word has length 1082 [2025-02-07 18:30:37,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 18:30:37,431 INFO L471 AbstractCegarLoop]: Abstraction has 1053 states and 1431 transitions. [2025-02-07 18:30:37,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 6.854166666666667) internal successors, (658), 96 states have internal predecessors, (658), 93 states have call successors, (372), 1 states have call predecessors, (372), 1 states have return successors, (372), 93 states have call predecessors, (372), 93 states have call successors, (372) [2025-02-07 18:30:37,433 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 1431 transitions. [2025-02-07 18:30:37,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2187 [2025-02-07 18:30:37,459 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 18:30:37,460 INFO L218 NwaCegarLoop]: trace histogram [190, 190, 190, 190, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 18:30:37,469 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-07 18:30:37,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 18:30:37,661 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 18:30:37,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 18:30:37,662 INFO L85 PathProgramCache]: Analyzing trace with hash 481481903, now seen corresponding path program 6 times [2025-02-07 18:30:37,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 18:30:37,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888571059] [2025-02-07 18:30:37,662 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-07 18:30:37,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 18:30:37,804 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 2186 statements into 148 equivalence classes. [2025-02-07 18:30:38,142 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 147 check-sat command(s) and asserted 2176 of 2186 statements. [2025-02-07 18:30:38,143 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 147 check-sat command(s) [2025-02-07 18:30:38,143 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 18:30:53,831 INFO L134 CoverageAnalysis]: Checked inductivity of 155905 backedges. 0 proven. 48175 refuted. 0 times theorem prover too weak. 107730 trivial. 0 not checked. [2025-02-07 18:30:53,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 18:30:53,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888571059] [2025-02-07 18:30:53,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888571059] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 18:30:53,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767427454] [2025-02-07 18:30:53,832 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-07 18:30:53,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 18:30:53,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 18:30:53,834 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 18:30:53,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-07 18:30:54,260 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 2186 statements into 148 equivalence classes. [2025-02-07 18:30:55,273 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 147 check-sat command(s) and asserted 2176 of 2186 statements. [2025-02-07 18:30:55,274 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 147 check-sat command(s) [2025-02-07 18:30:55,274 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 18:30:55,288 INFO L256 TraceCheckSpWp]: Trace formula consists of 4753 conjuncts, 96 conjuncts are in the unsatisfiable core [2025-02-07 18:30:55,315 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 18:30:56,243 INFO L134 CoverageAnalysis]: Checked inductivity of 155905 backedges. 0 proven. 48175 refuted. 0 times theorem prover too weak. 107730 trivial. 0 not checked. [2025-02-07 18:30:56,243 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 18:31:06,265 INFO L134 CoverageAnalysis]: Checked inductivity of 155905 backedges. 0 proven. 48175 refuted. 0 times theorem prover too weak. 107730 trivial. 0 not checked. [2025-02-07 18:31:06,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767427454] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 18:31:06,266 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 18:31:06,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97, 97] total 193 [2025-02-07 18:31:06,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365585995] [2025-02-07 18:31:06,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 18:31:06,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 193 states [2025-02-07 18:31:06,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 18:31:06,277 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2025-02-07 18:31:06,285 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2025-02-07 18:31:06,288 INFO L87 Difference]: Start difference. First operand 1053 states and 1431 transitions. Second operand has 193 states, 193 states have (on average 6.932642487046632) internal successors, (1338), 193 states have internal predecessors, (1338), 190 states have call successors, (760), 1 states have call predecessors, (760), 1 states have return successors, (760), 190 states have call predecessors, (760), 190 states have call successors, (760) [2025-02-07 18:31:09,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 18:31:09,891 INFO L93 Difference]: Finished difference Result 2112 states and 2969 transitions. [2025-02-07 18:31:09,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2025-02-07 18:31:09,893 INFO L78 Accepts]: Start accepts. Automaton has has 193 states, 193 states have (on average 6.932642487046632) internal successors, (1338), 193 states have internal predecessors, (1338), 190 states have call successors, (760), 1 states have call predecessors, (760), 1 states have return successors, (760), 190 states have call predecessors, (760), 190 states have call successors, (760) Word has length 2186 [2025-02-07 18:31:09,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 18:31:09,909 INFO L225 Difference]: With dead ends: 2112 [2025-02-07 18:31:09,909 INFO L226 Difference]: Without dead ends: 2109 [2025-02-07 18:31:09,915 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4467 GetRequests, 4276 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2025-02-07 18:31:09,916 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 12 mSDsluCounter, 1034 mSDsCounter, 0 mSdLazyCounter, 1151 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 1067 SdHoareTripleChecker+Invalid, 1153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-02-07 18:31:09,916 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 1067 Invalid, 1153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1151 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-02-07 18:31:09,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2109 states. [2025-02-07 18:31:09,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2109 to 2109. [2025-02-07 18:31:10,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2109 states, 1342 states have (on average 1.0007451564828613) internal successors, (1343), 1342 states have internal predecessors, (1343), 764 states have call successors, (764), 2 states have call predecessors, (764), 2 states have return successors, (764), 764 states have call predecessors, (764), 764 states have call successors, (764) [2025-02-07 18:31:10,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2109 states to 2109 states and 2871 transitions. [2025-02-07 18:31:10,013 INFO L78 Accepts]: Start accepts. Automaton has 2109 states and 2871 transitions. Word has length 2186 [2025-02-07 18:31:10,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 18:31:10,019 INFO L471 AbstractCegarLoop]: Abstraction has 2109 states and 2871 transitions. [2025-02-07 18:31:10,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 193 states, 193 states have (on average 6.932642487046632) internal successors, (1338), 193 states have internal predecessors, (1338), 190 states have call successors, (760), 1 states have call predecessors, (760), 1 states have return successors, (760), 190 states have call predecessors, (760), 190 states have call successors, (760) [2025-02-07 18:31:10,021 INFO L276 IsEmpty]: Start isEmpty. Operand 2109 states and 2871 transitions. [2025-02-07 18:31:10,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4395 [2025-02-07 18:31:10,123 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 18:31:10,124 INFO L218 NwaCegarLoop]: trace histogram [382, 382, 382, 382, 190, 190, 190, 190, 190, 190, 190, 190, 190, 190, 190, 190, 190, 190, 190, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 18:31:10,142 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-07 18:31:10,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2025-02-07 18:31:10,325 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 18:31:10,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 18:31:10,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1574711983, now seen corresponding path program 7 times [2025-02-07 18:31:10,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 18:31:10,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292379334] [2025-02-07 18:31:10,326 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-07 18:31:10,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 18:31:10,551 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4394 statements into 1 equivalence classes. [2025-02-07 18:31:10,725 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4394 of 4394 statements. [2025-02-07 18:31:10,725 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 18:31:10,725 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat