./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-59.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc 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/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-59.i -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 3e25c1e865f9c17a1fadd9c040f12ed15699bfd313ad109ce8205c26bee89007 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-05 21:13:49,508 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 21:13:49,563 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-05 21:13:49,569 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 21:13:49,572 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 21:13:49,588 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 21:13:49,589 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 21:13:49,589 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 21:13:49,589 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 21:13:49,589 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 21:13:49,590 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 21:13:49,590 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 21:13:49,590 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 21:13:49,590 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 21:13:49,591 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 21:13:49,591 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 21:13:49,591 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 21:13:49,591 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 21:13:49,592 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-05 21:13:49,592 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 21:13:49,592 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 21:13:49,592 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 21:13:49,592 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 21:13:49,592 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 21:13:49,592 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 21:13:49,592 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 21:13:49,592 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 21:13:49,592 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 21:13:49,592 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 21:13:49,593 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 21:13:49,593 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 21:13:49,593 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 21:13:49,593 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 21:13:49,593 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 21:13:49,593 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 21:13:49,594 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 21:13:49,594 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 21:13:49,594 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-05 21:13:49,594 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-05 21:13:49,594 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 21:13:49,594 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 21:13:49,594 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 21:13:49,594 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 21:13:49,594 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 -> 3e25c1e865f9c17a1fadd9c040f12ed15699bfd313ad109ce8205c26bee89007 [2025-02-05 21:13:49,827 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 21:13:49,834 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 21:13:49,835 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 21:13:49,836 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 21:13:49,836 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 21:13:49,837 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-59.i [2025-02-05 21:13:51,035 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4d4a78066/74a3a44b65cd46159f23eb6033c6986e/FLAG49f1ac410 [2025-02-05 21:13:51,329 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 21:13:51,334 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-59.i [2025-02-05 21:13:51,361 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4d4a78066/74a3a44b65cd46159f23eb6033c6986e/FLAG49f1ac410 [2025-02-05 21:13:51,619 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4d4a78066/74a3a44b65cd46159f23eb6033c6986e [2025-02-05 21:13:51,621 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 21:13:51,623 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 21:13:51,625 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 21:13:51,625 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 21:13:51,628 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 21:13:51,629 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 09:13:51" (1/1) ... [2025-02-05 21:13:51,630 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69fd6a48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:13:51, skipping insertion in model container [2025-02-05 21:13:51,630 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 09:13:51" (1/1) ... [2025-02-05 21:13:51,654 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 21:13:51,750 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/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-59.i[916,929] [2025-02-05 21:13:51,811 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 21:13:51,822 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 21:13:51,831 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/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-59.i[916,929] [2025-02-05 21:13:51,867 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 21:13:51,884 INFO L204 MainTranslator]: Completed translation [2025-02-05 21:13:51,885 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:13:51 WrapperNode [2025-02-05 21:13:51,885 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 21:13:51,886 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 21:13:51,886 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 21:13:51,886 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 21:13:51,890 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:13:51" (1/1) ... [2025-02-05 21:13:51,901 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:13:51" (1/1) ... [2025-02-05 21:13:51,941 INFO L138 Inliner]: procedures = 26, calls = 62, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 349 [2025-02-05 21:13:51,941 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 21:13:51,942 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 21:13:51,942 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 21:13:51,942 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 21:13:51,947 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:13:51" (1/1) ... [2025-02-05 21:13:51,948 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:13:51" (1/1) ... [2025-02-05 21:13:51,952 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:13:51" (1/1) ... [2025-02-05 21:13:51,974 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]. [2025-02-05 21:13:51,977 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:13:51" (1/1) ... [2025-02-05 21:13:51,978 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:13:51" (1/1) ... [2025-02-05 21:13:51,987 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:13:51" (1/1) ... [2025-02-05 21:13:51,990 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:13:51" (1/1) ... [2025-02-05 21:13:51,998 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:13:51" (1/1) ... [2025-02-05 21:13:52,000 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:13:51" (1/1) ... [2025-02-05 21:13:52,005 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 21:13:52,006 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 21:13:52,006 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 21:13:52,006 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 21:13:52,007 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:13:51" (1/1) ... [2025-02-05 21:13:52,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 21:13:52,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 21:13:52,035 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) [2025-02-05 21:13:52,046 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 [2025-02-05 21:13:52,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 21:13:52,062 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-02-05 21:13:52,062 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-02-05 21:13:52,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-05 21:13:52,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 21:13:52,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 21:13:52,124 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 21:13:52,125 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 21:13:52,602 INFO L? ?]: Removed 23 outVars from TransFormulas that were not future-live. [2025-02-05 21:13:52,602 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 21:13:52,622 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 21:13:52,623 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 21:13:52,623 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 09:13:52 BoogieIcfgContainer [2025-02-05 21:13:52,623 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 21:13:52,625 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 21:13:52,625 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 21:13:52,628 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 21:13:52,628 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 09:13:51" (1/3) ... [2025-02-05 21:13:52,629 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26222bae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 09:13:52, skipping insertion in model container [2025-02-05 21:13:52,630 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:13:51" (2/3) ... [2025-02-05 21:13:52,630 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26222bae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 09:13:52, skipping insertion in model container [2025-02-05 21:13:52,630 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 09:13:52" (3/3) ... [2025-02-05 21:13:52,631 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-100_file-59.i [2025-02-05 21:13:52,641 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 21:13:52,644 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodesize_ps-cn-100_file-59.i that has 2 procedures, 148 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-02-05 21:13:52,695 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 21:13:52,703 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;@f3f32b1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 21:13:52,703 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-05 21:13:52,706 INFO L276 IsEmpty]: Start isEmpty. Operand has 148 states, 96 states have (on average 1.46875) internal successors, (141), 97 states have internal predecessors, (141), 49 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2025-02-05 21:13:52,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2025-02-05 21:13:52,717 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 21:13:52,717 INFO L218 NwaCegarLoop]: trace histogram [49, 49, 49, 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, 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, 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, 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, 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, 1, 1] [2025-02-05 21:13:52,718 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 21:13:52,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 21:13:52,721 INFO L85 PathProgramCache]: Analyzing trace with hash -566053417, now seen corresponding path program 1 times [2025-02-05 21:13:52,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 21:13:52,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366306143] [2025-02-05 21:13:52,727 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 21:13:52,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 21:13:52,796 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 304 statements into 1 equivalence classes. [2025-02-05 21:13:52,814 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 304 of 304 statements. [2025-02-05 21:13:52,815 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 21:13:52,815 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 21:13:52,998 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 4608 trivial. 0 not checked. [2025-02-05 21:13:52,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 21:13:52,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366306143] [2025-02-05 21:13:52,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366306143] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 21:13:52,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259066177] [2025-02-05 21:13:52,999 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 21:13:52,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 21:13:52,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 21:13:53,001 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) [2025-02-05 21:13:53,003 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 [2025-02-05 21:13:53,111 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 304 statements into 1 equivalence classes. [2025-02-05 21:13:53,239 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 304 of 304 statements. [2025-02-05 21:13:53,239 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 21:13:53,239 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 21:13:53,242 INFO L256 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-02-05 21:13:53,252 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 21:13:53,290 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 4608 trivial. 0 not checked. [2025-02-05 21:13:53,290 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 21:13:53,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259066177] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 21:13:53,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 21:13:53,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-02-05 21:13:53,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011252912] [2025-02-05 21:13:53,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 21:13:53,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-05 21:13:53,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 21:13:53,313 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-05 21:13:53,313 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-05 21:13:53,316 INFO L87 Difference]: Start difference. First operand has 148 states, 96 states have (on average 1.46875) internal successors, (141), 97 states have internal predecessors, (141), 49 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) Second operand has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 2 states have call successors, (49) [2025-02-05 21:13:53,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 21:13:53,346 INFO L93 Difference]: Finished difference Result 281 states and 507 transitions. [2025-02-05 21:13:53,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-05 21:13:53,348 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 2 states have call successors, (49) Word has length 304 [2025-02-05 21:13:53,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 21:13:53,353 INFO L225 Difference]: With dead ends: 281 [2025-02-05 21:13:53,353 INFO L226 Difference]: Without dead ends: 136 [2025-02-05 21:13:53,356 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-05 21:13:53,360 INFO L435 NwaCegarLoop]: 213 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 21:13:53,361 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 213 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 21:13:53,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2025-02-05 21:13:53,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2025-02-05 21:13:53,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 85 states have (on average 1.411764705882353) internal successors, (120), 85 states have internal predecessors, (120), 49 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2025-02-05 21:13:53,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 218 transitions. [2025-02-05 21:13:53,407 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 218 transitions. Word has length 304 [2025-02-05 21:13:53,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 21:13:53,408 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 218 transitions. [2025-02-05 21:13:53,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 2 states have call successors, (49) [2025-02-05 21:13:53,408 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 218 transitions. [2025-02-05 21:13:53,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2025-02-05 21:13:53,412 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 21:13:53,412 INFO L218 NwaCegarLoop]: trace histogram [49, 49, 49, 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, 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, 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, 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, 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, 1, 1] [2025-02-05 21:13:53,421 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-05 21:13:53,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-02-05 21:13:53,617 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 21:13:53,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 21:13:53,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1407989160, now seen corresponding path program 1 times [2025-02-05 21:13:53,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 21:13:53,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639938116] [2025-02-05 21:13:53,619 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 21:13:53,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 21:13:53,643 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 304 statements into 1 equivalence classes. [2025-02-05 21:13:53,693 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 304 of 304 statements. [2025-02-05 21:13:53,693 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 21:13:53,693 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 21:13:54,147 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2025-02-05 21:13:54,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 21:13:54,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639938116] [2025-02-05 21:13:54,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639938116] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 21:13:54,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 21:13:54,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 21:13:54,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660932962] [2025-02-05 21:13:54,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 21:13:54,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 21:13:54,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 21:13:54,153 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 21:13:54,153 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 21:13:54,153 INFO L87 Difference]: Start difference. First operand 136 states and 218 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2025-02-05 21:13:54,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 21:13:54,387 INFO L93 Difference]: Finished difference Result 403 states and 649 transitions. [2025-02-05 21:13:54,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 21:13:54,387 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) Word has length 304 [2025-02-05 21:13:54,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 21:13:54,391 INFO L225 Difference]: With dead ends: 403 [2025-02-05 21:13:54,393 INFO L226 Difference]: Without dead ends: 270 [2025-02-05 21:13:54,394 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-05 21:13:54,396 INFO L435 NwaCegarLoop]: 210 mSDtfsCounter, 167 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 21:13:54,396 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 623 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 21:13:54,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2025-02-05 21:13:54,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 251. [2025-02-05 21:13:54,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 150 states have (on average 1.3933333333333333) internal successors, (209), 150 states have internal predecessors, (209), 98 states have call successors, (98), 2 states have call predecessors, (98), 2 states have return successors, (98), 98 states have call predecessors, (98), 98 states have call successors, (98) [2025-02-05 21:13:54,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 405 transitions. [2025-02-05 21:13:54,447 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 405 transitions. Word has length 304 [2025-02-05 21:13:54,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 21:13:54,448 INFO L471 AbstractCegarLoop]: Abstraction has 251 states and 405 transitions. [2025-02-05 21:13:54,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2025-02-05 21:13:54,449 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 405 transitions. [2025-02-05 21:13:54,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2025-02-05 21:13:54,458 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 21:13:54,458 INFO L218 NwaCegarLoop]: trace histogram [49, 49, 49, 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, 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, 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, 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, 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, 1, 1, 1] [2025-02-05 21:13:54,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-05 21:13:54,459 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 21:13:54,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 21:13:54,459 INFO L85 PathProgramCache]: Analyzing trace with hash 382406189, now seen corresponding path program 1 times [2025-02-05 21:13:54,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 21:13:54,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850937193] [2025-02-05 21:13:54,460 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 21:13:54,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 21:13:54,485 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 305 statements into 1 equivalence classes. [2025-02-05 21:13:54,579 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 305 of 305 statements. [2025-02-05 21:13:54,579 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 21:13:54,579 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 21:13:54,916 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2025-02-05 21:13:54,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 21:13:54,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850937193] [2025-02-05 21:13:54,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850937193] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 21:13:54,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 21:13:54,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 21:13:54,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183063051] [2025-02-05 21:13:54,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 21:13:54,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 21:13:54,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 21:13:54,918 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 21:13:54,918 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 21:13:54,918 INFO L87 Difference]: Start difference. First operand 251 states and 405 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2025-02-05 21:13:55,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 21:13:55,160 INFO L93 Difference]: Finished difference Result 527 states and 847 transitions. [2025-02-05 21:13:55,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 21:13:55,161 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) Word has length 305 [2025-02-05 21:13:55,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 21:13:55,167 INFO L225 Difference]: With dead ends: 527 [2025-02-05 21:13:55,167 INFO L226 Difference]: Without dead ends: 394 [2025-02-05 21:13:55,168 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-05 21:13:55,168 INFO L435 NwaCegarLoop]: 215 mSDtfsCounter, 182 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 21:13:55,169 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 621 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 21:13:55,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2025-02-05 21:13:55,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 382. [2025-02-05 21:13:55,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 231 states have (on average 1.3982683982683983) internal successors, (323), 231 states have internal predecessors, (323), 147 states have call successors, (147), 3 states have call predecessors, (147), 3 states have return successors, (147), 147 states have call predecessors, (147), 147 states have call successors, (147) [2025-02-05 21:13:55,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 617 transitions. [2025-02-05 21:13:55,228 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 617 transitions. Word has length 305 [2025-02-05 21:13:55,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 21:13:55,228 INFO L471 AbstractCegarLoop]: Abstraction has 382 states and 617 transitions. [2025-02-05 21:13:55,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2025-02-05 21:13:55,229 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 617 transitions. [2025-02-05 21:13:55,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2025-02-05 21:13:55,232 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 21:13:55,232 INFO L218 NwaCegarLoop]: trace histogram [49, 49, 49, 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, 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, 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, 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, 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, 1, 1, 1, 1] [2025-02-05 21:13:55,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-05 21:13:55,232 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 21:13:55,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 21:13:55,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1738251448, now seen corresponding path program 1 times [2025-02-05 21:13:55,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 21:13:55,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417141025] [2025-02-05 21:13:55,233 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 21:13:55,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 21:13:55,252 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 306 statements into 1 equivalence classes. [2025-02-05 21:13:55,413 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 306 of 306 statements. [2025-02-05 21:13:55,415 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 21:13:55,415 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 21:13:56,030 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 9 proven. 135 refuted. 0 times theorem prover too weak. 4560 trivial. 0 not checked. [2025-02-05 21:13:56,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 21:13:56,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417141025] [2025-02-05 21:13:56,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417141025] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 21:13:56,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409739279] [2025-02-05 21:13:56,033 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 21:13:56,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 21:13:56,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 21:13:56,036 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) [2025-02-05 21:13:56,039 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 [2025-02-05 21:13:56,140 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 306 statements into 1 equivalence classes. [2025-02-05 21:13:56,225 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 306 of 306 statements. [2025-02-05 21:13:56,225 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 21:13:56,225 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 21:13:56,228 INFO L256 TraceCheckSpWp]: Trace formula consists of 689 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-02-05 21:13:56,235 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 21:13:58,093 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 594 proven. 135 refuted. 0 times theorem prover too weak. 3975 trivial. 0 not checked. [2025-02-05 21:13:58,093 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 21:13:58,940 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 9 proven. 135 refuted. 0 times theorem prover too weak. 4560 trivial. 0 not checked. [2025-02-05 21:13:58,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409739279] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 21:13:58,940 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 21:13:58,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 22 [2025-02-05 21:13:58,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308742031] [2025-02-05 21:13:58,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 21:13:58,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-02-05 21:13:58,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 21:13:58,943 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-02-05 21:13:58,943 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2025-02-05 21:13:58,944 INFO L87 Difference]: Start difference. First operand 382 states and 617 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 6 states have call successors, (147), 3 states have call predecessors, (147), 6 states have return successors, (147), 6 states have call predecessors, (147), 6 states have call successors, (147) [2025-02-05 21:14:00,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 21:14:00,633 INFO L93 Difference]: Finished difference Result 729 states and 1154 transitions. [2025-02-05 21:14:00,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-02-05 21:14:00,634 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 6 states have call successors, (147), 3 states have call predecessors, (147), 6 states have return successors, (147), 6 states have call predecessors, (147), 6 states have call successors, (147) Word has length 306 [2025-02-05 21:14:00,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 21:14:00,638 INFO L225 Difference]: With dead ends: 729 [2025-02-05 21:14:00,638 INFO L226 Difference]: Without dead ends: 465 [2025-02-05 21:14:00,639 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 642 GetRequests, 603 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=359, Invalid=1281, Unknown=0, NotChecked=0, Total=1640 [2025-02-05 21:14:00,640 INFO L435 NwaCegarLoop]: 166 mSDtfsCounter, 781 mSDsluCounter, 1234 mSDsCounter, 0 mSdLazyCounter, 1324 mSolverCounterSat, 550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 1400 SdHoareTripleChecker+Invalid, 1874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 1324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-02-05 21:14:00,640 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [781 Valid, 1400 Invalid, 1874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 1324 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-02-05 21:14:00,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2025-02-05 21:14:00,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 427. [2025-02-05 21:14:00,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 267 states have (on average 1.3745318352059925) internal successors, (367), 269 states have internal predecessors, (367), 153 states have call successors, (153), 6 states have call predecessors, (153), 6 states have return successors, (153), 151 states have call predecessors, (153), 153 states have call successors, (153) [2025-02-05 21:14:00,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 673 transitions. [2025-02-05 21:14:00,699 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 673 transitions. Word has length 306 [2025-02-05 21:14:00,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 21:14:00,701 INFO L471 AbstractCegarLoop]: Abstraction has 427 states and 673 transitions. [2025-02-05 21:14:00,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 6 states have call successors, (147), 3 states have call predecessors, (147), 6 states have return successors, (147), 6 states have call predecessors, (147), 6 states have call successors, (147) [2025-02-05 21:14:00,701 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 673 transitions. [2025-02-05 21:14:00,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2025-02-05 21:14:00,703 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 21:14:00,703 INFO L218 NwaCegarLoop]: trace histogram [49, 49, 49, 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, 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, 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, 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, 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, 1, 1, 1, 1] [2025-02-05 21:14:00,710 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 [2025-02-05 21:14:00,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 21:14:00,907 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 21:14:00,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 21:14:00,908 INFO L85 PathProgramCache]: Analyzing trace with hash 2031654455, now seen corresponding path program 1 times [2025-02-05 21:14:00,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 21:14:00,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127450011] [2025-02-05 21:14:00,908 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 21:14:00,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 21:14:00,926 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 306 statements into 1 equivalence classes. [2025-02-05 21:14:01,063 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 306 of 306 statements. [2025-02-05 21:14:01,064 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 21:14:01,064 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-05 21:14:01,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1017961457] [2025-02-05 21:14:01,067 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 21:14:01,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 21:14:01,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 21:14:01,072 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) [2025-02-05 21:14:01,073 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 [2025-02-05 21:14:01,135 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 306 statements into 1 equivalence classes. [2025-02-05 21:14:01,217 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 306 of 306 statements. [2025-02-05 21:14:01,217 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 21:14:01,217 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 21:14:01,220 INFO L256 TraceCheckSpWp]: Trace formula consists of 689 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-02-05 21:14:01,228 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 21:14:04,401 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 624 proven. 630 refuted. 0 times theorem prover too weak. 3450 trivial. 0 not checked. [2025-02-05 21:14:04,401 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 21:14:19,674 WARN L286 SmtUtils]: Spent 10.28s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2025-02-05 21:14:41,480 WARN L286 SmtUtils]: Spent 6.34s on a formula simplification that was a NOOP. DAG size: 49 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-02-05 21:15:06,470 WARN L286 SmtUtils]: Spent 12.15s on a formula simplification that was a NOOP. DAG size: 53 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)