./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive/Ackermann03.c --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/recursive/Ackermann03.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 c244f72db2906c596b7f122d769fc1464836d7d05d9227ee4269773d59ed10bd --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-05 15:54:56,584 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 15:54:56,630 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-05 15:54:56,633 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 15:54:56,633 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 15:54:56,650 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 15:54:56,651 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 15:54:56,651 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 15:54:56,651 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 15:54:56,651 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 15:54:56,651 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 15:54:56,651 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 15:54:56,652 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 15:54:56,652 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 15:54:56,652 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 15:54:56,652 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 15:54:56,652 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 15:54:56,652 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 15:54:56,652 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-05 15:54:56,652 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 15:54:56,652 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 15:54:56,652 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 15:54:56,653 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 15:54:56,653 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 15:54:56,653 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 15:54:56,653 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 15:54:56,653 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 15:54:56,653 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 15:54:56,653 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 15:54:56,653 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 15:54:56,653 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 15:54:56,653 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 15:54:56,653 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 15:54:56,653 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 15:54:56,653 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 15:54:56,653 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 15:54:56,653 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 15:54:56,654 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-05 15:54:56,654 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-05 15:54:56,654 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 15:54:56,654 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 15:54:56,654 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 15:54:56,654 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 15:54:56,654 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 -> c244f72db2906c596b7f122d769fc1464836d7d05d9227ee4269773d59ed10bd [2025-02-05 15:54:56,848 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 15:54:56,853 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 15:54:56,855 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 15:54:56,855 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 15:54:56,856 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 15:54:56,856 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/Ackermann03.c [2025-02-05 15:54:57,955 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/64627be3e/b1a6651ccbfb4ec9bda31d55546bfdfb/FLAG826893566 [2025-02-05 15:54:58,140 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 15:54:58,146 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/recursive/Ackermann03.c [2025-02-05 15:54:58,161 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/64627be3e/b1a6651ccbfb4ec9bda31d55546bfdfb/FLAG826893566 [2025-02-05 15:54:58,209 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/64627be3e/b1a6651ccbfb4ec9bda31d55546bfdfb [2025-02-05 15:54:58,212 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 15:54:58,213 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 15:54:58,219 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 15:54:58,219 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 15:54:58,222 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 15:54:58,223 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 03:54:58" (1/1) ... [2025-02-05 15:54:58,225 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@408bb6ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:54:58, skipping insertion in model container [2025-02-05 15:54:58,225 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 03:54:58" (1/1) ... [2025-02-05 15:54:58,239 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 15:54:58,370 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/recursive/Ackermann03.c[1168,1181] [2025-02-05 15:54:58,373 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 15:54:58,382 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 15:54:58,392 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/recursive/Ackermann03.c[1168,1181] [2025-02-05 15:54:58,394 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 15:54:58,408 INFO L204 MainTranslator]: Completed translation [2025-02-05 15:54:58,409 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:54:58 WrapperNode [2025-02-05 15:54:58,410 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 15:54:58,411 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 15:54:58,411 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 15:54:58,412 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 15:54:58,417 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:54:58" (1/1) ... [2025-02-05 15:54:58,423 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:54:58" (1/1) ... [2025-02-05 15:54:58,435 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 33 [2025-02-05 15:54:58,435 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 15:54:58,436 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 15:54:58,436 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 15:54:58,436 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 15:54:58,442 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:54:58" (1/1) ... [2025-02-05 15:54:58,442 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:54:58" (1/1) ... [2025-02-05 15:54:58,443 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:54:58" (1/1) ... [2025-02-05 15:54:58,451 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 15:54:58,451 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:54:58" (1/1) ... [2025-02-05 15:54:58,451 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:54:58" (1/1) ... [2025-02-05 15:54:58,453 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:54:58" (1/1) ... [2025-02-05 15:54:58,453 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:54:58" (1/1) ... [2025-02-05 15:54:58,454 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:54:58" (1/1) ... [2025-02-05 15:54:58,454 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:54:58" (1/1) ... [2025-02-05 15:54:58,455 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 15:54:58,456 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 15:54:58,456 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 15:54:58,456 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 15:54:58,457 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:54:58" (1/1) ... [2025-02-05 15:54:58,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 15:54:58,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:54:58,485 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 15:54:58,491 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 15:54:58,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 15:54:58,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 15:54:58,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 15:54:58,508 INFO L130 BoogieDeclarations]: Found specification of procedure ackermann [2025-02-05 15:54:58,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ackermann [2025-02-05 15:54:58,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-05 15:54:58,543 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 15:54:58,544 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 15:54:58,613 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L23: havoc #t~ret5;havoc #t~ret6; [2025-02-05 15:54:58,613 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L21: havoc #t~ret4; [2025-02-05 15:54:58,620 INFO L? ?]: Removed 13 outVars from TransFormulas that were not future-live. [2025-02-05 15:54:58,621 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 15:54:58,627 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 15:54:58,627 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 15:54:58,628 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 03:54:58 BoogieIcfgContainer [2025-02-05 15:54:58,628 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 15:54:58,630 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 15:54:58,630 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 15:54:58,633 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 15:54:58,633 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 03:54:58" (1/3) ... [2025-02-05 15:54:58,634 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2423cd9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 03:54:58, skipping insertion in model container [2025-02-05 15:54:58,634 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:54:58" (2/3) ... [2025-02-05 15:54:58,634 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2423cd9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 03:54:58, skipping insertion in model container [2025-02-05 15:54:58,634 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 03:54:58" (3/3) ... [2025-02-05 15:54:58,635 INFO L128 eAbstractionObserver]: Analyzing ICFG Ackermann03.c [2025-02-05 15:54:58,645 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 15:54:58,646 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Ackermann03.c that has 2 procedures, 23 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-02-05 15:54:58,680 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 15:54:58,693 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;@6785d99, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 15:54:58,694 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-05 15:54:58,697 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-02-05 15:54:58,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-02-05 15:54:58,703 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:54:58,703 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:54:58,703 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:54:58,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:54:58,708 INFO L85 PathProgramCache]: Analyzing trace with hash -640999361, now seen corresponding path program 1 times [2025-02-05 15:54:58,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:54:58,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180974127] [2025-02-05 15:54:58,716 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:54:58,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:54:58,771 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-05 15:54:58,791 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-05 15:54:58,792 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:54:58,792 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:54:58,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 15:54:58,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:54:58,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180974127] [2025-02-05 15:54:58,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180974127] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:54:58,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:54:58,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-05 15:54:58,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731488195] [2025-02-05 15:54:58,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:54:58,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 15:54:58,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:54:58,948 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 15:54:58,948 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-05 15:54:58,949 INFO L87 Difference]: Start difference. First operand has 23 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-05 15:54:59,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:54:59,080 INFO L93 Difference]: Finished difference Result 37 states and 53 transitions. [2025-02-05 15:54:59,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 15:54:59,082 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2025-02-05 15:54:59,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:54:59,088 INFO L225 Difference]: With dead ends: 37 [2025-02-05 15:54:59,089 INFO L226 Difference]: Without dead ends: 27 [2025-02-05 15:54:59,091 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:54:59,093 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 10 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:54:59,093 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 71 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:54:59,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2025-02-05 15:54:59,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2025-02-05 15:54:59,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2025-02-05 15:54:59,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2025-02-05 15:54:59,119 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 12 [2025-02-05 15:54:59,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:54:59,119 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2025-02-05 15:54:59,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-05 15:54:59,120 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2025-02-05 15:54:59,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-02-05 15:54:59,121 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:54:59,121 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:54:59,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-05 15:54:59,121 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:54:59,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:54:59,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1861650847, now seen corresponding path program 1 times [2025-02-05 15:54:59,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:54:59,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334108591] [2025-02-05 15:54:59,122 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:54:59,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:54:59,131 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-05 15:54:59,139 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-05 15:54:59,139 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:54:59,139 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:54:59,237 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-05 15:54:59,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:54:59,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334108591] [2025-02-05 15:54:59,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334108591] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:54:59,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484661004] [2025-02-05 15:54:59,242 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:54:59,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:54:59,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:54:59,245 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 15:54:59,246 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 15:54:59,289 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-05 15:54:59,302 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-05 15:54:59,303 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:54:59,303 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:54:59,305 INFO L256 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-05 15:54:59,307 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:54:59,353 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-05 15:54:59,355 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 15:54:59,434 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-05 15:54:59,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484661004] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 15:54:59,435 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 15:54:59,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2025-02-05 15:54:59,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592079070] [2025-02-05 15:54:59,435 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 15:54:59,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-05 15:54:59,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:54:59,436 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-05 15:54:59,436 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-02-05 15:54:59,437 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2025-02-05 15:54:59,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:54:59,531 INFO L93 Difference]: Finished difference Result 69 states and 124 transitions. [2025-02-05 15:54:59,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-05 15:54:59,531 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 19 [2025-02-05 15:54:59,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:54:59,533 INFO L225 Difference]: With dead ends: 69 [2025-02-05 15:54:59,533 INFO L226 Difference]: Without dead ends: 45 [2025-02-05 15:54:59,551 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2025-02-05 15:54:59,551 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 17 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:54:59,551 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 66 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:54:59,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2025-02-05 15:54:59,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2025-02-05 15:54:59,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 28 states have internal predecessors, (31), 8 states have call successors, (8), 2 states have call predecessors, (8), 5 states have return successors, (27), 10 states have call predecessors, (27), 8 states have call successors, (27) [2025-02-05 15:54:59,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 66 transitions. [2025-02-05 15:54:59,567 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 66 transitions. Word has length 19 [2025-02-05 15:54:59,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:54:59,568 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 66 transitions. [2025-02-05 15:54:59,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2025-02-05 15:54:59,568 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 66 transitions. [2025-02-05 15:54:59,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-02-05 15:54:59,570 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:54:59,570 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:54:59,578 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-05 15:54:59,775 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 [2025-02-05 15:54:59,775 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:54:59,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:54:59,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1457087151, now seen corresponding path program 1 times [2025-02-05 15:54:59,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:54:59,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562813957] [2025-02-05 15:54:59,776 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:54:59,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:54:59,792 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-02-05 15:54:59,815 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-02-05 15:54:59,815 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:54:59,815 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:54:59,963 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2025-02-05 15:54:59,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:54:59,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562813957] [2025-02-05 15:54:59,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562813957] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:54:59,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850976383] [2025-02-05 15:54:59,964 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:54:59,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:54:59,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:54:59,966 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 15:54:59,974 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 15:54:59,998 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-02-05 15:55:00,014 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-02-05 15:55:00,014 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:55:00,014 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:55:00,015 INFO L256 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-05 15:55:00,017 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:55:00,056 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2025-02-05 15:55:00,056 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 15:55:00,452 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-02-05 15:55:00,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850976383] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 15:55:00,453 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 15:55:00,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 8 [2025-02-05 15:55:00,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286282083] [2025-02-05 15:55:00,453 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 15:55:00,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-05 15:55:00,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:55:00,454 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-05 15:55:00,454 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2025-02-05 15:55:00,454 INFO L87 Difference]: Start difference. First operand 41 states and 66 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) [2025-02-05 15:55:00,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:55:00,530 INFO L93 Difference]: Finished difference Result 62 states and 124 transitions. [2025-02-05 15:55:00,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-05 15:55:00,531 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) Word has length 45 [2025-02-05 15:55:00,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:55:00,533 INFO L225 Difference]: With dead ends: 62 [2025-02-05 15:55:00,533 INFO L226 Difference]: Without dead ends: 58 [2025-02-05 15:55:00,533 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 90 SyntacticMatches, 5 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2025-02-05 15:55:00,534 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 22 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:55:00,534 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 68 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:55:00,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2025-02-05 15:55:00,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2025-02-05 15:55:00,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 35 states have (on average 1.1142857142857143) internal successors, (39), 36 states have internal predecessors, (39), 10 states have call successors, (10), 2 states have call predecessors, (10), 8 states have return successors, (60), 15 states have call predecessors, (60), 10 states have call successors, (60) [2025-02-05 15:55:00,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 109 transitions. [2025-02-05 15:55:00,544 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 109 transitions. Word has length 45 [2025-02-05 15:55:00,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:55:00,544 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 109 transitions. [2025-02-05 15:55:00,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) [2025-02-05 15:55:00,544 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 109 transitions. [2025-02-05 15:55:00,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2025-02-05 15:55:00,548 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:55:00,548 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 11, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:55:00,553 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-05 15:55:00,752 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 [2025-02-05 15:55:00,752 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:55:00,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:55:00,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1906797306, now seen corresponding path program 2 times [2025-02-05 15:55:00,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:55:00,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348657979] [2025-02-05 15:55:00,753 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 15:55:00,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:55:00,762 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 119 statements into 2 equivalence classes. [2025-02-05 15:55:00,780 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 119 of 119 statements. [2025-02-05 15:55:00,781 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 15:55:00,781 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:55:01,039 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 157 proven. 146 refuted. 0 times theorem prover too weak. 366 trivial. 0 not checked. [2025-02-05 15:55:01,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:55:01,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348657979] [2025-02-05 15:55:01,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348657979] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:55:01,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902068637] [2025-02-05 15:55:01,042 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 15:55:01,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:55:01,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:55:01,045 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 15:55:01,046 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 15:55:01,095 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 119 statements into 2 equivalence classes. [2025-02-05 15:55:01,133 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 119 of 119 statements. [2025-02-05 15:55:01,133 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 15:55:01,133 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:55:01,135 INFO L256 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-02-05 15:55:01,137 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:55:01,273 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 360 proven. 86 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2025-02-05 15:55:01,274 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 15:55:02,654 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 115 proven. 179 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2025-02-05 15:55:02,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [902068637] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 15:55:02,655 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 15:55:02,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12, 15] total 30 [2025-02-05 15:55:02,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707673504] [2025-02-05 15:55:02,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 15:55:02,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2025-02-05 15:55:02,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:55:02,658 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2025-02-05 15:55:02,658 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=770, Unknown=0, NotChecked=0, Total=870 [2025-02-05 15:55:02,659 INFO L87 Difference]: Start difference. First operand 54 states and 109 transitions. Second operand has 30 states, 30 states have (on average 2.433333333333333) internal successors, (73), 24 states have internal predecessors, (73), 10 states have call successors, (18), 2 states have call predecessors, (18), 14 states have return successors, (31), 18 states have call predecessors, (31), 10 states have call successors, (31) [2025-02-05 15:55:04,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:55:04,123 INFO L93 Difference]: Finished difference Result 348 states and 2271 transitions. [2025-02-05 15:55:04,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2025-02-05 15:55:04,124 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.433333333333333) internal successors, (73), 24 states have internal predecessors, (73), 10 states have call successors, (18), 2 states have call predecessors, (18), 14 states have return successors, (31), 18 states have call predecessors, (31), 10 states have call successors, (31) Word has length 119 [2025-02-05 15:55:04,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:55:04,126 INFO L225 Difference]: With dead ends: 348 [2025-02-05 15:55:04,126 INFO L226 Difference]: Without dead ends: 51 [2025-02-05 15:55:04,139 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 222 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1121 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1009, Invalid=4691, Unknown=0, NotChecked=0, Total=5700 [2025-02-05 15:55:04,140 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 19 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-05 15:55:04,141 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 292 Invalid, 912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 811 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-05 15:55:04,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2025-02-05 15:55:04,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2025-02-05 15:55:04,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 34 states have internal predecessors, (35), 8 states have call successors, (8), 2 states have call predecessors, (8), 8 states have return successors, (18), 11 states have call predecessors, (18), 8 states have call successors, (18) [2025-02-05 15:55:04,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 61 transitions. [2025-02-05 15:55:04,149 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 61 transitions. Word has length 119 [2025-02-05 15:55:04,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:55:04,150 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 61 transitions. [2025-02-05 15:55:04,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.433333333333333) internal successors, (73), 24 states have internal predecessors, (73), 10 states have call successors, (18), 2 states have call predecessors, (18), 14 states have return successors, (31), 18 states have call predecessors, (31), 10 states have call successors, (31) [2025-02-05 15:55:04,150 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 61 transitions. [2025-02-05 15:55:04,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2025-02-05 15:55:04,152 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:55:04,152 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 9, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:55:04,169 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-05 15:55:04,352 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 [2025-02-05 15:55:04,353 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:55:04,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:55:04,353 INFO L85 PathProgramCache]: Analyzing trace with hash -2014828494, now seen corresponding path program 3 times [2025-02-05 15:55:04,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:55:04,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666721549] [2025-02-05 15:55:04,353 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 15:55:04,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:55:04,359 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 105 statements into 13 equivalence classes. [2025-02-05 15:55:04,371 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) and asserted 72 of 105 statements. [2025-02-05 15:55:04,372 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2025-02-05 15:55:04,372 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:55:04,623 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 192 proven. 78 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2025-02-05 15:55:04,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:55:04,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666721549] [2025-02-05 15:55:04,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666721549] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:55:04,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838930310] [2025-02-05 15:55:04,624 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 15:55:04,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:55:04,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:55:04,626 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) [2025-02-05 15:55:04,627 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 [2025-02-05 15:55:04,668 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 105 statements into 13 equivalence classes. [2025-02-05 15:55:04,689 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) and asserted 72 of 105 statements. [2025-02-05 15:55:04,689 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2025-02-05 15:55:04,689 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:55:04,690 INFO L256 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-02-05 15:55:04,692 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:55:04,777 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 190 proven. 71 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2025-02-05 15:55:04,777 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 15:55:06,098 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 208 proven. 61 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2025-02-05 15:55:06,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838930310] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 15:55:06,100 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 15:55:06,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 15] total 30 [2025-02-05 15:55:06,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615504234] [2025-02-05 15:55:06,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 15:55:06,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2025-02-05 15:55:06,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:55:06,102 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2025-02-05 15:55:06,102 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=753, Unknown=0, NotChecked=0, Total=870 [2025-02-05 15:55:06,103 INFO L87 Difference]: Start difference. First operand 48 states and 61 transitions. Second operand has 30 states, 30 states have (on average 2.2333333333333334) internal successors, (67), 25 states have internal predecessors, (67), 12 states have call successors, (15), 1 states have call predecessors, (15), 14 states have return successors, (27), 15 states have call predecessors, (27), 12 states have call successors, (27) [2025-02-05 15:55:06,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:55:06,541 INFO L93 Difference]: Finished difference Result 112 states and 160 transitions. [2025-02-05 15:55:06,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-02-05 15:55:06,542 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.2333333333333334) internal successors, (67), 25 states have internal predecessors, (67), 12 states have call successors, (15), 1 states have call predecessors, (15), 14 states have return successors, (27), 15 states have call predecessors, (27), 12 states have call successors, (27) Word has length 105 [2025-02-05 15:55:06,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:55:06,544 INFO L225 Difference]: With dead ends: 112 [2025-02-05 15:55:06,546 INFO L226 Difference]: Without dead ends: 61 [2025-02-05 15:55:06,548 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 193 SyntacticMatches, 5 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 457 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=407, Invalid=1755, Unknown=0, NotChecked=0, Total=2162 [2025-02-05 15:55:06,548 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 35 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 15:55:06,553 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 258 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 15:55:06,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2025-02-05 15:55:06,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 55. [2025-02-05 15:55:06,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 37 states have (on average 1.135135135135135) internal successors, (42), 39 states have internal predecessors, (42), 9 states have call successors, (9), 4 states have call predecessors, (9), 8 states have return successors, (16), 11 states have call predecessors, (16), 9 states have call successors, (16) [2025-02-05 15:55:06,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 67 transitions. [2025-02-05 15:55:06,566 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 67 transitions. Word has length 105 [2025-02-05 15:55:06,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:55:06,567 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 67 transitions. [2025-02-05 15:55:06,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.2333333333333334) internal successors, (67), 25 states have internal predecessors, (67), 12 states have call successors, (15), 1 states have call predecessors, (15), 14 states have return successors, (27), 15 states have call predecessors, (27), 12 states have call successors, (27) [2025-02-05 15:55:06,571 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 67 transitions. [2025-02-05 15:55:06,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2025-02-05 15:55:06,574 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:55:06,574 INFO L218 NwaCegarLoop]: trace histogram [21, 21, 12, 9, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:55:06,584 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-05 15:55:06,776 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 [2025-02-05 15:55:06,777 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:55:06,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:55:06,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1926600805, now seen corresponding path program 4 times [2025-02-05 15:55:06,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:55:06,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131298991] [2025-02-05 15:55:06,781 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 15:55:06,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:55:06,797 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 144 statements into 2 equivalence classes. [2025-02-05 15:55:06,837 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 144 of 144 statements. [2025-02-05 15:55:06,842 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 15:55:06,843 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:55:07,805 INFO L134 CoverageAnalysis]: Checked inductivity of 1030 backedges. 371 proven. 220 refuted. 0 times theorem prover too weak. 439 trivial. 0 not checked. [2025-02-05 15:55:07,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:55:07,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131298991] [2025-02-05 15:55:07,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131298991] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:55:07,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965855239] [2025-02-05 15:55:07,806 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 15:55:07,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:55:07,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:55:07,808 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) [2025-02-05 15:55:07,811 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 [2025-02-05 15:55:07,864 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 144 statements into 2 equivalence classes. [2025-02-05 15:55:07,896 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 144 of 144 statements. [2025-02-05 15:55:07,896 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 15:55:07,896 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:55:07,897 INFO L256 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 33 conjuncts are in the unsatisfiable core [2025-02-05 15:55:07,900 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:55:07,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1030 backedges. 367 proven. 209 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2025-02-05 15:55:07,964 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 15:55:11,200 INFO L134 CoverageAnalysis]: Checked inductivity of 1030 backedges. 410 proven. 201 refuted. 0 times theorem prover too weak. 419 trivial. 0 not checked. [2025-02-05 15:55:11,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965855239] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 15:55:11,202 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 15:55:11,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 26] total 36 [2025-02-05 15:55:11,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847930927] [2025-02-05 15:55:11,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 15:55:11,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2025-02-05 15:55:11,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:55:11,204 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2025-02-05 15:55:11,204 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=1099, Unknown=0, NotChecked=0, Total=1260 [2025-02-05 15:55:11,204 INFO L87 Difference]: Start difference. First operand 55 states and 67 transitions. Second operand has 36 states, 36 states have (on average 2.0555555555555554) internal successors, (74), 29 states have internal predecessors, (74), 14 states have call successors, (17), 1 states have call predecessors, (17), 16 states have return successors, (30), 18 states have call predecessors, (30), 14 states have call successors, (30) [2025-02-05 15:55:11,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:55:11,721 INFO L93 Difference]: Finished difference Result 124 states and 159 transitions. [2025-02-05 15:55:11,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-02-05 15:55:11,722 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.0555555555555554) internal successors, (74), 29 states have internal predecessors, (74), 14 states have call successors, (17), 1 states have call predecessors, (17), 16 states have return successors, (30), 18 states have call predecessors, (30), 14 states have call successors, (30) Word has length 144 [2025-02-05 15:55:11,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:55:11,723 INFO L225 Difference]: With dead ends: 124 [2025-02-05 15:55:11,723 INFO L226 Difference]: Without dead ends: 74 [2025-02-05 15:55:11,724 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 272 SyntacticMatches, 10 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 859 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=650, Invalid=3010, Unknown=0, NotChecked=0, Total=3660 [2025-02-05 15:55:11,725 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 39 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-05 15:55:11,725 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 281 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-05 15:55:11,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2025-02-05 15:55:11,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 60. [2025-02-05 15:55:11,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 40 states have (on average 1.125) internal successors, (45), 42 states have internal predecessors, (45), 10 states have call successors, (10), 4 states have call predecessors, (10), 9 states have return successors, (20), 13 states have call predecessors, (20), 10 states have call successors, (20) [2025-02-05 15:55:11,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 75 transitions. [2025-02-05 15:55:11,731 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 75 transitions. Word has length 144 [2025-02-05 15:55:11,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:55:11,732 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 75 transitions. [2025-02-05 15:55:11,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.0555555555555554) internal successors, (74), 29 states have internal predecessors, (74), 14 states have call successors, (17), 1 states have call predecessors, (17), 16 states have return successors, (30), 18 states have call predecessors, (30), 14 states have call successors, (30) [2025-02-05 15:55:11,732 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 75 transitions. [2025-02-05 15:55:11,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2025-02-05 15:55:11,733 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:55:11,733 INFO L218 NwaCegarLoop]: trace histogram [21, 21, 12, 9, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:55:11,740 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-02-05 15:55:11,938 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 [2025-02-05 15:55:11,938 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:55:11,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:55:11,938 INFO L85 PathProgramCache]: Analyzing trace with hash -70666415, now seen corresponding path program 5 times [2025-02-05 15:55:11,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:55:11,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787496599] [2025-02-05 15:55:11,938 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 15:55:11,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:55:11,945 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 144 statements into 14 equivalence classes. [2025-02-05 15:55:11,955 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) and asserted 79 of 144 statements. [2025-02-05 15:55:11,955 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2025-02-05 15:55:11,955 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:55:12,141 INFO L134 CoverageAnalysis]: Checked inductivity of 1030 backedges. 146 proven. 371 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2025-02-05 15:55:12,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:55:12,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787496599] [2025-02-05 15:55:12,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787496599] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:55:12,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706158894] [2025-02-05 15:55:12,142 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 15:55:12,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:55:12,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:55:12,144 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) [2025-02-05 15:55:12,148 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 [2025-02-05 15:55:12,231 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 144 statements into 14 equivalence classes. [2025-02-05 15:55:12,251 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) and asserted 79 of 144 statements. [2025-02-05 15:55:12,252 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2025-02-05 15:55:12,252 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:55:12,253 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-05 15:55:12,255 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:55:12,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1030 backedges. 595 proven. 114 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2025-02-05 15:55:12,311 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 15:55:13,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1030 backedges. 160 proven. 360 refuted. 0 times theorem prover too weak. 510 trivial. 0 not checked. [2025-02-05 15:55:13,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706158894] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 15:55:13,658 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 15:55:13,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 17] total 22 [2025-02-05 15:55:13,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715290908] [2025-02-05 15:55:13,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 15:55:13,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-02-05 15:55:13,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:55:13,660 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-02-05 15:55:13,660 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2025-02-05 15:55:13,660 INFO L87 Difference]: Start difference. First operand 60 states and 75 transitions. Second operand has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 19 states have internal predecessors, (67), 12 states have call successors, (18), 2 states have call predecessors, (18), 11 states have return successors, (27), 11 states have call predecessors, (27), 12 states have call successors, (27) [2025-02-05 15:55:13,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:55:13,874 INFO L93 Difference]: Finished difference Result 120 states and 154 transitions. [2025-02-05 15:55:13,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-02-05 15:55:13,876 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 19 states have internal predecessors, (67), 12 states have call successors, (18), 2 states have call predecessors, (18), 11 states have return successors, (27), 11 states have call predecessors, (27), 12 states have call successors, (27) Word has length 144 [2025-02-05 15:55:13,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:55:13,878 INFO L225 Difference]: With dead ends: 120 [2025-02-05 15:55:13,878 INFO L226 Difference]: Without dead ends: 65 [2025-02-05 15:55:13,879 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 275 SyntacticMatches, 11 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=337, Invalid=1223, Unknown=0, NotChecked=0, Total=1560 [2025-02-05 15:55:13,880 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 48 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:55:13,881 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 136 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:55:13,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2025-02-05 15:55:13,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 60. [2025-02-05 15:55:13,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 40 states have (on average 1.125) internal successors, (45), 42 states have internal predecessors, (45), 10 states have call successors, (10), 4 states have call predecessors, (10), 9 states have return successors, (18), 13 states have call predecessors, (18), 10 states have call successors, (18) [2025-02-05 15:55:13,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 73 transitions. [2025-02-05 15:55:13,896 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 73 transitions. Word has length 144 [2025-02-05 15:55:13,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:55:13,896 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 73 transitions. [2025-02-05 15:55:13,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 19 states have internal predecessors, (67), 12 states have call successors, (18), 2 states have call predecessors, (18), 11 states have return successors, (27), 11 states have call predecessors, (27), 12 states have call successors, (27) [2025-02-05 15:55:13,896 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 73 transitions. [2025-02-05 15:55:13,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2025-02-05 15:55:13,897 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:55:13,897 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 13, 10, 9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:55:13,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-02-05 15:55:14,101 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 [2025-02-05 15:55:14,102 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:55:14,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:55:14,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1579822898, now seen corresponding path program 6 times [2025-02-05 15:55:14,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:55:14,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663148020] [2025-02-05 15:55:14,103 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 15:55:14,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:55:14,109 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 157 statements into 15 equivalence classes. [2025-02-05 15:55:14,139 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) and asserted 157 of 157 statements. [2025-02-05 15:55:14,140 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2025-02-05 15:55:14,140 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:55:14,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1246 backedges. 291 proven. 522 refuted. 0 times theorem prover too weak. 433 trivial. 0 not checked. [2025-02-05 15:55:14,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:55:14,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663148020] [2025-02-05 15:55:14,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663148020] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:55:14,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059005138] [2025-02-05 15:55:14,978 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 15:55:14,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:55:14,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:55:14,984 INFO L229 MonitoredProcess]: Starting monitored process 8 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 15:55:14,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-05 15:55:15,087 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 157 statements into 15 equivalence classes. [2025-02-05 15:55:15,131 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) and asserted 157 of 157 statements. [2025-02-05 15:55:15,131 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2025-02-05 15:55:15,131 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:55:15,133 INFO L256 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 35 conjuncts are in the unsatisfiable core [2025-02-05 15:55:15,135 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:55:15,262 INFO L134 CoverageAnalysis]: Checked inductivity of 1246 backedges. 421 proven. 286 refuted. 0 times theorem prover too weak. 539 trivial. 0 not checked. [2025-02-05 15:55:15,262 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 15:55:18,503 INFO L134 CoverageAnalysis]: Checked inductivity of 1246 backedges. 467 proven. 286 refuted. 0 times theorem prover too weak. 493 trivial. 0 not checked. [2025-02-05 15:55:18,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059005138] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 15:55:18,503 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 15:55:18,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 20, 27] total 48 [2025-02-05 15:55:18,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529346125] [2025-02-05 15:55:18,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 15:55:18,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2025-02-05 15:55:18,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:55:18,505 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2025-02-05 15:55:18,505 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=2014, Unknown=0, NotChecked=0, Total=2256 [2025-02-05 15:55:18,505 INFO L87 Difference]: Start difference. First operand 60 states and 73 transitions. Second operand has 48 states, 48 states have (on average 2.1666666666666665) internal successors, (104), 39 states have internal predecessors, (104), 22 states have call successors, (25), 1 states have call predecessors, (25), 23 states have return successors, (43), 25 states have call predecessors, (43), 22 states have call successors, (43) [2025-02-05 15:55:19,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:55:19,265 INFO L93 Difference]: Finished difference Result 147 states and 196 transitions. [2025-02-05 15:55:19,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-02-05 15:55:19,265 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.1666666666666665) internal successors, (104), 39 states have internal predecessors, (104), 22 states have call successors, (25), 1 states have call predecessors, (25), 23 states have return successors, (43), 25 states have call predecessors, (43), 22 states have call successors, (43) Word has length 157 [2025-02-05 15:55:19,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:55:19,267 INFO L225 Difference]: With dead ends: 147 [2025-02-05 15:55:19,267 INFO L226 Difference]: Without dead ends: 79 [2025-02-05 15:55:19,269 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 295 SyntacticMatches, 14 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1563 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=915, Invalid=5091, Unknown=0, NotChecked=0, Total=6006 [2025-02-05 15:55:19,269 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 121 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 1028 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 1176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 1028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-05 15:55:19,269 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 454 Invalid, 1176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 1028 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-05 15:55:19,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2025-02-05 15:55:19,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 69. [2025-02-05 15:55:19,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 46 states have (on average 1.108695652173913) internal successors, (51), 48 states have internal predecessors, (51), 11 states have call successors, (11), 5 states have call predecessors, (11), 11 states have return successors, (22), 15 states have call predecessors, (22), 11 states have call successors, (22) [2025-02-05 15:55:19,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 84 transitions. [2025-02-05 15:55:19,276 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 84 transitions. Word has length 157 [2025-02-05 15:55:19,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:55:19,277 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 84 transitions. [2025-02-05 15:55:19,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.1666666666666665) internal successors, (104), 39 states have internal predecessors, (104), 22 states have call successors, (25), 1 states have call predecessors, (25), 23 states have return successors, (43), 25 states have call predecessors, (43), 22 states have call successors, (43) [2025-02-05 15:55:19,277 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 84 transitions. [2025-02-05 15:55:19,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2025-02-05 15:55:19,278 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:55:19,278 INFO L218 NwaCegarLoop]: trace histogram [25, 25, 14, 11, 10, 10, 10, 10, 10, 10, 10, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:55:19,288 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-05 15:55:19,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:55:19,482 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:55:19,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:55:19,483 INFO L85 PathProgramCache]: Analyzing trace with hash -682904789, now seen corresponding path program 7 times [2025-02-05 15:55:19,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:55:19,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291430699] [2025-02-05 15:55:19,483 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-05 15:55:19,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:55:19,492 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 170 statements into 1 equivalence classes. [2025-02-05 15:55:19,505 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 170 of 170 statements. [2025-02-05 15:55:19,505 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:55:19,505 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:55:19,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 495 proven. 368 refuted. 0 times theorem prover too weak. 620 trivial. 0 not checked. [2025-02-05 15:55:19,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:55:19,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291430699] [2025-02-05 15:55:19,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291430699] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:55:19,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762246474] [2025-02-05 15:55:19,894 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-05 15:55:19,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:55:19,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:55:19,896 INFO L229 MonitoredProcess]: Starting monitored process 9 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 15:55:19,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-05 15:55:20,039 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 170 statements into 1 equivalence classes. [2025-02-05 15:55:20,075 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 170 of 170 statements. [2025-02-05 15:55:20,076 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:55:20,076 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:55:20,078 INFO L256 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 37 conjuncts are in the unsatisfiable core [2025-02-05 15:55:20,080 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:55:20,172 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 477 proven. 372 refuted. 0 times theorem prover too weak. 634 trivial. 0 not checked. [2025-02-05 15:55:20,173 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 15:55:23,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 525 proven. 384 refuted. 0 times theorem prover too weak. 574 trivial. 0 not checked. [2025-02-05 15:55:23,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762246474] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 15:55:23,632 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 15:55:23,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 21, 28] total 32 [2025-02-05 15:55:23,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845737359] [2025-02-05 15:55:23,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 15:55:23,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-02-05 15:55:23,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:55:23,633 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-02-05 15:55:23,633 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=854, Unknown=0, NotChecked=0, Total=992 [2025-02-05 15:55:23,634 INFO L87 Difference]: Start difference. First operand 69 states and 84 transitions. Second operand has 32 states, 32 states have (on average 2.375) internal successors, (76), 28 states have internal predecessors, (76), 15 states have call successors, (18), 1 states have call predecessors, (18), 17 states have return successors, (32), 15 states have call predecessors, (32), 15 states have call successors, (32) [2025-02-05 15:55:24,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:55:24,371 INFO L93 Difference]: Finished difference Result 162 states and 209 transitions. [2025-02-05 15:55:24,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2025-02-05 15:55:24,371 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.375) internal successors, (76), 28 states have internal predecessors, (76), 15 states have call successors, (18), 1 states have call predecessors, (18), 17 states have return successors, (32), 15 states have call predecessors, (32), 15 states have call successors, (32) Word has length 170 [2025-02-05 15:55:24,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:55:24,373 INFO L225 Difference]: With dead ends: 162 [2025-02-05 15:55:24,373 INFO L226 Difference]: Without dead ends: 98 [2025-02-05 15:55:24,375 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 323 SyntacticMatches, 19 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1250 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=867, Invalid=3555, Unknown=0, NotChecked=0, Total=4422 [2025-02-05 15:55:24,375 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 104 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-05 15:55:24,375 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 249 Invalid, 768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-05 15:55:24,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2025-02-05 15:55:24,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 74. [2025-02-05 15:55:24,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 49 states have (on average 1.1020408163265305) internal successors, (54), 51 states have internal predecessors, (54), 12 states have call successors, (12), 5 states have call predecessors, (12), 12 states have return successors, (26), 17 states have call predecessors, (26), 12 states have call successors, (26) [2025-02-05 15:55:24,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 92 transitions. [2025-02-05 15:55:24,384 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 92 transitions. Word has length 170 [2025-02-05 15:55:24,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:55:24,385 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 92 transitions. [2025-02-05 15:55:24,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.375) internal successors, (76), 28 states have internal predecessors, (76), 15 states have call successors, (18), 1 states have call predecessors, (18), 17 states have return successors, (32), 15 states have call predecessors, (32), 15 states have call successors, (32) [2025-02-05 15:55:24,385 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 92 transitions. [2025-02-05 15:55:24,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2025-02-05 15:55:24,387 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:55:24,387 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 15, 12, 11, 11, 11, 11, 11, 11, 11, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:55:24,393 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-02-05 15:55:24,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:55:24,591 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:55:24,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:55:24,591 INFO L85 PathProgramCache]: Analyzing trace with hash -841014366, now seen corresponding path program 8 times [2025-02-05 15:55:24,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:55:24,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081192084] [2025-02-05 15:55:24,591 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 15:55:24,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:55:24,605 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 183 statements into 2 equivalence classes. [2025-02-05 15:55:24,632 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 183 of 183 statements. [2025-02-05 15:55:24,632 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 15:55:24,632 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:55:25,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 600 proven. 156 refuted. 0 times theorem prover too weak. 985 trivial. 0 not checked. [2025-02-05 15:55:25,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:55:25,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081192084] [2025-02-05 15:55:25,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081192084] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:55:25,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181348743] [2025-02-05 15:55:25,288 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 15:55:25,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:55:25,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:55:25,290 INFO L229 MonitoredProcess]: Starting monitored process 10 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 15:55:25,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-05 15:55:25,542 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 183 statements into 2 equivalence classes. [2025-02-05 15:55:25,610 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 183 of 183 statements. [2025-02-05 15:55:25,610 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 15:55:25,610 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:55:25,616 INFO L256 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 79 conjuncts are in the unsatisfiable core [2025-02-05 15:55:25,619 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:55:25,672 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 583 proven. 158 refuted. 0 times theorem prover too weak. 1000 trivial. 0 not checked. [2025-02-05 15:55:25,672 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 15:55:26,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 597 proven. 189 refuted. 0 times theorem prover too weak. 955 trivial. 0 not checked. [2025-02-05 15:55:26,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181348743] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 15:55:26,495 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 15:55:26,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 23, 33] total 36 [2025-02-05 15:55:26,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131892879] [2025-02-05 15:55:26,495 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 15:55:26,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2025-02-05 15:55:26,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:55:26,496 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2025-02-05 15:55:26,497 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=1171, Unknown=0, NotChecked=0, Total=1260 [2025-02-05 15:55:26,497 INFO L87 Difference]: Start difference. First operand 74 states and 92 transitions. Second operand has 36 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 29 states have internal predecessors, (56), 6 states have call successors, (9), 1 states have call predecessors, (9), 14 states have return successors, (22), 13 states have call predecessors, (22), 6 states have call successors, (22) [2025-02-05 15:55:29,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:55:29,224 INFO L93 Difference]: Finished difference Result 170 states and 241 transitions. [2025-02-05 15:55:29,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2025-02-05 15:55:29,224 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 29 states have internal predecessors, (56), 6 states have call successors, (9), 1 states have call predecessors, (9), 14 states have return successors, (22), 13 states have call predecessors, (22), 6 states have call successors, (22) Word has length 183 [2025-02-05 15:55:29,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:55:29,227 INFO L225 Difference]: With dead ends: 170 [2025-02-05 15:55:29,227 INFO L226 Difference]: Without dead ends: 126 [2025-02-05 15:55:29,233 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1865 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1147, Invalid=8165, Unknown=0, NotChecked=0, Total=9312 [2025-02-05 15:55:29,233 INFO L435 NwaCegarLoop]: 55 mSDtfsCounter, 203 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 3307 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 3568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 3307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-02-05 15:55:29,238 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 612 Invalid, 3568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [261 Valid, 3307 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-02-05 15:55:29,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2025-02-05 15:55:29,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 90. [2025-02-05 15:55:29,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 60 states have (on average 1.1166666666666667) internal successors, (67), 61 states have internal predecessors, (67), 15 states have call successors, (15), 7 states have call predecessors, (15), 14 states have return successors, (37), 21 states have call predecessors, (37), 15 states have call successors, (37) [2025-02-05 15:55:29,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 119 transitions. [2025-02-05 15:55:29,262 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 119 transitions. Word has length 183 [2025-02-05 15:55:29,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:55:29,266 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 119 transitions. [2025-02-05 15:55:29,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 29 states have internal predecessors, (56), 6 states have call successors, (9), 1 states have call predecessors, (9), 14 states have return successors, (22), 13 states have call predecessors, (22), 6 states have call successors, (22) [2025-02-05 15:55:29,267 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 119 transitions. [2025-02-05 15:55:29,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2025-02-05 15:55:29,271 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:55:29,271 INFO L218 NwaCegarLoop]: trace histogram [29, 29, 16, 13, 12, 12, 12, 12, 12, 12, 12, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:55:29,282 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-02-05 15:55:29,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:55:29,472 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:55:29,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:55:29,472 INFO L85 PathProgramCache]: Analyzing trace with hash -857915717, now seen corresponding path program 9 times [2025-02-05 15:55:29,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:55:29,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941454201] [2025-02-05 15:55:29,473 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 15:55:29,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:55:29,488 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 196 statements into 21 equivalence classes. [2025-02-05 15:55:29,535 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) and asserted 184 of 196 statements. [2025-02-05 15:55:29,535 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2025-02-05 15:55:29,535 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:55:31,077 INFO L134 CoverageAnalysis]: Checked inductivity of 2020 backedges. 761 proven. 546 refuted. 0 times theorem prover too weak. 713 trivial. 0 not checked. [2025-02-05 15:55:31,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:55:31,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941454201] [2025-02-05 15:55:31,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941454201] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:55:31,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655103383] [2025-02-05 15:55:31,078 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 15:55:31,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:55:31,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:55:31,081 INFO L229 MonitoredProcess]: Starting monitored process 11 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 15:55:31,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-05 15:55:31,280 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 196 statements into 21 equivalence classes. [2025-02-05 15:55:31,340 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) and asserted 184 of 196 statements. [2025-02-05 15:55:31,341 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2025-02-05 15:55:31,341 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:55:31,343 INFO L256 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 41 conjuncts are in the unsatisfiable core [2025-02-05 15:55:31,348 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:55:31,571 INFO L134 CoverageAnalysis]: Checked inductivity of 2020 backedges. 647 proven. 519 refuted. 0 times theorem prover too weak. 854 trivial. 0 not checked. [2025-02-05 15:55:31,571 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 15:55:35,889 INFO L134 CoverageAnalysis]: Checked inductivity of 2020 backedges. 685 proven. 580 refuted. 0 times theorem prover too weak. 755 trivial. 0 not checked. [2025-02-05 15:55:35,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655103383] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 15:55:35,890 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 15:55:35,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 23, 32] total 56 [2025-02-05 15:55:35,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225200424] [2025-02-05 15:55:35,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 15:55:35,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2025-02-05 15:55:35,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:55:35,892 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2025-02-05 15:55:35,893 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=431, Invalid=2649, Unknown=0, NotChecked=0, Total=3080 [2025-02-05 15:55:35,894 INFO L87 Difference]: Start difference. First operand 90 states and 119 transitions. Second operand has 56 states, 55 states have (on average 2.0545454545454547) internal successors, (113), 47 states have internal predecessors, (113), 26 states have call successors, (29), 1 states have call predecessors, (29), 26 states have return successors, (52), 27 states have call predecessors, (52), 26 states have call successors, (52) [2025-02-05 15:55:36,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:55:36,991 INFO L93 Difference]: Finished difference Result 267 states and 466 transitions. [2025-02-05 15:55:36,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2025-02-05 15:55:36,991 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 2.0545454545454547) internal successors, (113), 47 states have internal predecessors, (113), 26 states have call successors, (29), 1 states have call predecessors, (29), 26 states have return successors, (52), 27 states have call predecessors, (52), 26 states have call successors, (52) Word has length 196 [2025-02-05 15:55:36,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:55:36,993 INFO L225 Difference]: With dead ends: 267 [2025-02-05 15:55:36,993 INFO L226 Difference]: Without dead ends: 145 [2025-02-05 15:55:36,996 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 374 SyntacticMatches, 21 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2907 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1410, Invalid=6780, Unknown=0, NotChecked=0, Total=8190 [2025-02-05 15:55:36,996 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 61 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 1667 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 1753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-05 15:55:36,996 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 520 Invalid, 1753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1667 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-05 15:55:36,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2025-02-05 15:55:37,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 107. [2025-02-05 15:55:37,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 72 states have (on average 1.0555555555555556) internal successors, (76), 73 states have internal predecessors, (76), 16 states have call successors, (16), 10 states have call predecessors, (16), 18 states have return successors, (39), 23 states have call predecessors, (39), 16 states have call successors, (39) [2025-02-05 15:55:37,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 131 transitions. [2025-02-05 15:55:37,008 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 131 transitions. Word has length 196 [2025-02-05 15:55:37,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:55:37,008 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 131 transitions. [2025-02-05 15:55:37,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 55 states have (on average 2.0545454545454547) internal successors, (113), 47 states have internal predecessors, (113), 26 states have call successors, (29), 1 states have call predecessors, (29), 26 states have return successors, (52), 27 states have call predecessors, (52), 26 states have call successors, (52) [2025-02-05 15:55:37,009 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 131 transitions. [2025-02-05 15:55:37,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2025-02-05 15:55:37,010 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:55:37,010 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 17, 14, 13, 13, 13, 13, 13, 13, 13, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:55:37,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-02-05 15:55:37,211 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:55:37,211 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:55:37,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:55:37,212 INFO L85 PathProgramCache]: Analyzing trace with hash -2009742772, now seen corresponding path program 10 times [2025-02-05 15:55:37,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:55:37,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746647467] [2025-02-05 15:55:37,212 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 15:55:37,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:55:37,221 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 209 statements into 2 equivalence classes. [2025-02-05 15:55:37,234 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 209 of 209 statements. [2025-02-05 15:55:37,234 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 15:55:37,234 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:55:37,513 INFO L134 CoverageAnalysis]: Checked inductivity of 2320 backedges. 260 proven. 800 refuted. 0 times theorem prover too weak. 1260 trivial. 0 not checked. [2025-02-05 15:55:37,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:55:37,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746647467] [2025-02-05 15:55:37,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746647467] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:55:37,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571608683] [2025-02-05 15:55:37,514 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 15:55:37,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:55:37,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:55:37,518 INFO L229 MonitoredProcess]: Starting monitored process 12 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 15:55:37,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-05 15:55:37,749 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 209 statements into 2 equivalence classes. [2025-02-05 15:55:37,795 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 209 of 209 statements. [2025-02-05 15:55:37,795 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 15:55:37,795 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:55:37,797 INFO L256 TraceCheckSpWp]: Trace formula consists of 630 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-02-05 15:55:37,800 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:55:37,851 INFO L134 CoverageAnalysis]: Checked inductivity of 2320 backedges. 1340 proven. 196 refuted. 0 times theorem prover too weak. 784 trivial. 0 not checked. [2025-02-05 15:55:37,851 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 15:55:39,738 INFO L134 CoverageAnalysis]: Checked inductivity of 2320 backedges. 274 proven. 806 refuted. 0 times theorem prover too weak. 1240 trivial. 0 not checked. [2025-02-05 15:55:39,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571608683] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 15:55:39,739 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 15:55:39,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 21] total 24 [2025-02-05 15:55:39,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755665431] [2025-02-05 15:55:39,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 15:55:39,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-05 15:55:39,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:55:39,740 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-05 15:55:39,741 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=458, Unknown=0, NotChecked=0, Total=552 [2025-02-05 15:55:39,741 INFO L87 Difference]: Start difference. First operand 107 states and 131 transitions. Second operand has 24 states, 24 states have (on average 3.125) internal successors, (75), 21 states have internal predecessors, (75), 15 states have call successors, (21), 2 states have call predecessors, (21), 12 states have return successors, (31), 12 states have call predecessors, (31), 15 states have call successors, (31) [2025-02-05 15:55:40,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:55:40,039 INFO L93 Difference]: Finished difference Result 215 states and 267 transitions. [2025-02-05 15:55:40,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-02-05 15:55:40,039 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.125) internal successors, (75), 21 states have internal predecessors, (75), 15 states have call successors, (21), 2 states have call predecessors, (21), 12 states have return successors, (31), 12 states have call predecessors, (31), 15 states have call successors, (31) Word has length 209 [2025-02-05 15:55:40,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:55:40,041 INFO L225 Difference]: With dead ends: 215 [2025-02-05 15:55:40,041 INFO L226 Difference]: Without dead ends: 113 [2025-02-05 15:55:40,042 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 405 SyntacticMatches, 13 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=287, Invalid=1195, Unknown=0, NotChecked=0, Total=1482 [2025-02-05 15:55:40,042 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 46 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 15:55:40,042 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 226 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 15:55:40,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2025-02-05 15:55:40,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 102. [2025-02-05 15:55:40,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 69 states have (on average 1.0579710144927537) internal successors, (73), 70 states have internal predecessors, (73), 15 states have call successors, (15), 10 states have call predecessors, (15), 17 states have return successors, (30), 21 states have call predecessors, (30), 15 states have call successors, (30) [2025-02-05 15:55:40,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 118 transitions. [2025-02-05 15:55:40,056 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 118 transitions. Word has length 209 [2025-02-05 15:55:40,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:55:40,057 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 118 transitions. [2025-02-05 15:55:40,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.125) internal successors, (75), 21 states have internal predecessors, (75), 15 states have call successors, (21), 2 states have call predecessors, (21), 12 states have return successors, (31), 12 states have call predecessors, (31), 15 states have call successors, (31) [2025-02-05 15:55:40,057 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 118 transitions. [2025-02-05 15:55:40,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2025-02-05 15:55:40,060 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:55:40,061 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 23, 19, 18, 18, 18, 18, 18, 18, 18, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:55:40,072 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-05 15:55:40,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-02-05 15:55:40,262 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:55:40,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:55:40,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1133567937, now seen corresponding path program 11 times [2025-02-05 15:55:40,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:55:40,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509903855] [2025-02-05 15:55:40,262 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 15:55:40,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:55:40,274 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 281 statements into 25 equivalence classes. [2025-02-05 15:55:40,301 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) and asserted 260 of 281 statements. [2025-02-05 15:55:40,301 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2025-02-05 15:55:40,301 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:55:40,985 INFO L134 CoverageAnalysis]: Checked inductivity of 4329 backedges. 1493 proven. 814 refuted. 0 times theorem prover too weak. 2022 trivial. 0 not checked. [2025-02-05 15:55:40,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:55:40,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509903855] [2025-02-05 15:55:40,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509903855] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:55:40,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022498779] [2025-02-05 15:55:40,985 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 15:55:40,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:55:40,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:55:40,990 INFO L229 MonitoredProcess]: Starting monitored process 13 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 15:55:40,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-05 15:55:41,239 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 281 statements into 25 equivalence classes. [2025-02-05 15:55:41,325 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) and asserted 260 of 281 statements. [2025-02-05 15:55:41,325 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2025-02-05 15:55:41,325 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:55:41,328 INFO L256 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 53 conjuncts are in the unsatisfiable core [2025-02-05 15:55:41,334 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:55:41,462 INFO L134 CoverageAnalysis]: Checked inductivity of 4329 backedges. 1483 proven. 777 refuted. 0 times theorem prover too weak. 2069 trivial. 0 not checked. [2025-02-05 15:55:41,462 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 15:55:50,054 INFO L134 CoverageAnalysis]: Checked inductivity of 4329 backedges. 1579 proven. 819 refuted. 0 times theorem prover too weak. 1931 trivial. 0 not checked. [2025-02-05 15:55:50,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022498779] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 15:55:50,054 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 15:55:50,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 29, 40] total 43 [2025-02-05 15:55:50,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808363063] [2025-02-05 15:55:50,055 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 15:55:50,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2025-02-05 15:55:50,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:55:50,055 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2025-02-05 15:55:50,056 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=1571, Unknown=0, NotChecked=0, Total=1806 [2025-02-05 15:55:50,056 INFO L87 Difference]: Start difference. First operand 102 states and 118 transitions. Second operand has 43 states, 43 states have (on average 2.302325581395349) internal successors, (99), 37 states have internal predecessors, (99), 22 states have call successors, (25), 1 states have call predecessors, (25), 22 states have return successors, (44), 21 states have call predecessors, (44), 22 states have call successors, (44) [2025-02-05 15:55:50,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:55:50,740 INFO L93 Difference]: Finished difference Result 224 states and 277 transitions. [2025-02-05 15:55:50,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2025-02-05 15:55:50,741 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.302325581395349) internal successors, (99), 37 states have internal predecessors, (99), 22 states have call successors, (25), 1 states have call predecessors, (25), 22 states have return successors, (44), 21 states have call predecessors, (44), 22 states have call successors, (44) Word has length 281 [2025-02-05 15:55:50,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:55:50,743 INFO L225 Difference]: With dead ends: 224 [2025-02-05 15:55:50,743 INFO L226 Difference]: Without dead ends: 127 [2025-02-05 15:55:50,745 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 647 GetRequests, 540 SyntacticMatches, 27 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2119 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1273, Invalid=5369, Unknown=0, NotChecked=0, Total=6642 [2025-02-05 15:55:50,745 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 145 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 731 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-05 15:55:50,745 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 306 Invalid, 898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 731 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-05 15:55:50,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2025-02-05 15:55:50,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 107. [2025-02-05 15:55:50,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 72 states have (on average 1.0555555555555556) internal successors, (76), 73 states have internal predecessors, (76), 16 states have call successors, (16), 10 states have call predecessors, (16), 18 states have return successors, (30), 23 states have call predecessors, (30), 16 states have call successors, (30) [2025-02-05 15:55:50,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 122 transitions. [2025-02-05 15:55:50,754 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 122 transitions. Word has length 281 [2025-02-05 15:55:50,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:55:50,755 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 122 transitions. [2025-02-05 15:55:50,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.302325581395349) internal successors, (99), 37 states have internal predecessors, (99), 22 states have call successors, (25), 1 states have call predecessors, (25), 22 states have return successors, (44), 21 states have call predecessors, (44), 22 states have call successors, (44) [2025-02-05 15:55:50,755 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 122 transitions. [2025-02-05 15:55:50,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2025-02-05 15:55:50,757 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:55:50,757 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 24, 20, 19, 19, 19, 19, 19, 19, 19, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:55:50,767 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-02-05 15:55:50,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:55:50,960 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:55:50,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:55:50,961 INFO L85 PathProgramCache]: Analyzing trace with hash 144313614, now seen corresponding path program 12 times [2025-02-05 15:55:50,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:55:50,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037573830] [2025-02-05 15:55:50,961 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 15:55:50,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:55:50,972 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 294 statements into 25 equivalence classes. [2025-02-05 15:55:51,005 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) and asserted 284 of 294 statements. [2025-02-05 15:55:51,006 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) [2025-02-05 15:55:51,006 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:55:51,110 INFO L134 CoverageAnalysis]: Checked inductivity of 4764 backedges. 215 proven. 430 refuted. 0 times theorem prover too weak. 4119 trivial. 0 not checked. [2025-02-05 15:55:51,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:55:51,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037573830] [2025-02-05 15:55:51,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037573830] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:55:51,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202667053] [2025-02-05 15:55:51,111 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 15:55:51,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:55:51,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:55:51,113 INFO L229 MonitoredProcess]: Starting monitored process 14 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 15:55:51,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-02-05 15:55:51,446 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 294 statements into 25 equivalence classes. [2025-02-05 15:55:51,565 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) and asserted 284 of 294 statements. [2025-02-05 15:55:51,565 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) [2025-02-05 15:55:51,565 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:55:51,568 INFO L256 TraceCheckSpWp]: Trace formula consists of 847 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-02-05 15:55:51,572 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:55:51,600 INFO L134 CoverageAnalysis]: Checked inductivity of 4764 backedges. 215 proven. 426 refuted. 0 times theorem prover too weak. 4123 trivial. 0 not checked. [2025-02-05 15:55:51,601 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 15:55:52,174 INFO L134 CoverageAnalysis]: Checked inductivity of 4764 backedges. 215 proven. 433 refuted. 0 times theorem prover too weak. 4116 trivial. 0 not checked. [2025-02-05 15:55:52,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202667053] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 15:55:52,175 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 15:55:52,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 9] total 11 [2025-02-05 15:55:52,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840430686] [2025-02-05 15:55:52,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 15:55:52,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-05 15:55:52,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:55:52,176 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-05 15:55:52,176 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2025-02-05 15:55:52,176 INFO L87 Difference]: Start difference. First operand 107 states and 122 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 7 states have call successors, (11), 1 states have call predecessors, (11), 4 states have return successors, (12), 5 states have call predecessors, (12), 7 states have call successors, (12) [2025-02-05 15:55:52,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:55:52,273 INFO L93 Difference]: Finished difference Result 107 states and 122 transitions. [2025-02-05 15:55:52,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-05 15:55:52,273 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 7 states have call successors, (11), 1 states have call predecessors, (11), 4 states have return successors, (12), 5 states have call predecessors, (12), 7 states have call successors, (12) Word has length 294 [2025-02-05 15:55:52,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:55:52,274 INFO L225 Difference]: With dead ends: 107 [2025-02-05 15:55:52,274 INFO L226 Difference]: Without dead ends: 0 [2025-02-05 15:55:52,274 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 602 GetRequests, 586 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2025-02-05 15:55:52,275 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 17 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:55:52,275 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 104 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:55:52,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-02-05 15:55:52,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-02-05 15:55:52,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 15:55:52,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-02-05 15:55:52,276 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 294 [2025-02-05 15:55:52,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:55:52,276 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-05 15:55:52,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 7 states have call successors, (11), 1 states have call predecessors, (11), 4 states have return successors, (12), 5 states have call predecessors, (12), 7 states have call successors, (12) [2025-02-05 15:55:52,276 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-02-05 15:55:52,276 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-02-05 15:55:52,278 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-02-05 15:55:52,288 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-02-05 15:55:52,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:55:52,486 INFO L422 BasicCegarLoop]: Path program histogram: [12, 1, 1] [2025-02-05 15:55:52,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2025-02-05 15:56:24,047 WARN L286 SmtUtils]: Spent 6.26s on a formula simplification. DAG size of input: 205 DAG size of output: 229 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.or)