./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound2.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 d6c389695f28ab23288d12eab23e55426fe9ec0f0b8fe9723cca18e00c3db8b7 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-07 20:55:38,463 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-07 20:55:38,524 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-07 20:55:38,529 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-07 20:55:38,531 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-07 20:55:38,547 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-07 20:55:38,548 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-07 20:55:38,548 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-07 20:55:38,548 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-07 20:55:38,548 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-07 20:55:38,548 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-07 20:55:38,549 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-07 20:55:38,549 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-07 20:55:38,549 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-07 20:55:38,549 INFO L153 SettingsManager]: * Use SBE=true [2025-02-07 20:55:38,549 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-07 20:55:38,549 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-07 20:55:38,549 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-07 20:55:38,549 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-07 20:55:38,549 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-07 20:55:38,550 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-07 20:55:38,550 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-07 20:55:38,550 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-07 20:55:38,550 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-07 20:55:38,550 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-07 20:55:38,550 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-07 20:55:38,550 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-07 20:55:38,550 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-07 20:55:38,550 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-07 20:55:38,550 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-07 20:55:38,550 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-07 20:55:38,551 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-07 20:55:38,551 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 20:55:38,551 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-07 20:55:38,551 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-07 20:55:38,551 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-07 20:55:38,551 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-07 20:55:38,551 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-07 20:55:38,551 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-07 20:55:38,551 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-07 20:55:38,551 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-07 20:55:38,551 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-07 20:55:38,553 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-07 20:55:38,553 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 -> d6c389695f28ab23288d12eab23e55426fe9ec0f0b8fe9723cca18e00c3db8b7 [2025-02-07 20:55:38,771 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-07 20:55:38,779 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-07 20:55:38,780 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-07 20:55:38,781 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-07 20:55:38,781 INFO L274 PluginConnector]: CDTParser initialized [2025-02-07 20:55:38,782 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound2.c [2025-02-07 20:55:39,866 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/6debaca83/b094ebdddbcf4c5cb2546283c74163e4/FLAG5eb1452e8 [2025-02-07 20:55:40,150 INFO L384 CDTParser]: Found 1 translation units. [2025-02-07 20:55:40,152 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound2.c [2025-02-07 20:55:40,157 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/6debaca83/b094ebdddbcf4c5cb2546283c74163e4/FLAG5eb1452e8 [2025-02-07 20:55:40,429 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/6debaca83/b094ebdddbcf4c5cb2546283c74163e4 [2025-02-07 20:55:40,431 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-07 20:55:40,431 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-07 20:55:40,433 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-07 20:55:40,434 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-07 20:55:40,436 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-07 20:55:40,437 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 08:55:40" (1/1) ... [2025-02-07 20:55:40,437 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52a453c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:55:40, skipping insertion in model container [2025-02-07 20:55:40,437 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 08:55:40" (1/1) ... [2025-02-07 20:55:40,448 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-07 20:55:40,536 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/nla-digbench-scaling/sqrt1-ll_unwindbound2.c[520,533] [2025-02-07 20:55:40,549 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 20:55:40,555 INFO L200 MainTranslator]: Completed pre-run [2025-02-07 20:55:40,561 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/nla-digbench-scaling/sqrt1-ll_unwindbound2.c[520,533] [2025-02-07 20:55:40,565 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 20:55:40,574 INFO L204 MainTranslator]: Completed translation [2025-02-07 20:55:40,574 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:55:40 WrapperNode [2025-02-07 20:55:40,575 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-07 20:55:40,575 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-07 20:55:40,575 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-07 20:55:40,575 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-07 20:55:40,579 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:55:40" (1/1) ... [2025-02-07 20:55:40,582 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:55:40" (1/1) ... [2025-02-07 20:55:40,590 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 41 [2025-02-07 20:55:40,591 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-07 20:55:40,591 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-07 20:55:40,591 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-07 20:55:40,591 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-07 20:55:40,595 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:55:40" (1/1) ... [2025-02-07 20:55:40,595 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:55:40" (1/1) ... [2025-02-07 20:55:40,596 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:55:40" (1/1) ... [2025-02-07 20:55:40,601 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-02-07 20:55:40,602 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:55:40" (1/1) ... [2025-02-07 20:55:40,602 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:55:40" (1/1) ... [2025-02-07 20:55:40,603 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:55:40" (1/1) ... [2025-02-07 20:55:40,604 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:55:40" (1/1) ... [2025-02-07 20:55:40,604 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:55:40" (1/1) ... [2025-02-07 20:55:40,604 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:55:40" (1/1) ... [2025-02-07 20:55:40,605 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-07 20:55:40,605 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-07 20:55:40,606 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-07 20:55:40,606 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-07 20:55:40,606 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:55:40" (1/1) ... [2025-02-07 20:55:40,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 20:55:40,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:55:40,625 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-07 20:55:40,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-07 20:55:40,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-07 20:55:40,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-07 20:55:40,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-07 20:55:40,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-07 20:55:40,645 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-02-07 20:55:40,645 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-02-07 20:55:40,679 INFO L257 CfgBuilder]: Building ICFG [2025-02-07 20:55:40,681 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-07 20:55:40,778 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2025-02-07 20:55:40,778 INFO L308 CfgBuilder]: Performing block encoding [2025-02-07 20:55:40,783 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-07 20:55:40,783 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-07 20:55:40,784 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 08:55:40 BoogieIcfgContainer [2025-02-07 20:55:40,784 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-07 20:55:40,785 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-07 20:55:40,785 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-07 20:55:40,788 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-07 20:55:40,788 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 08:55:40" (1/3) ... [2025-02-07 20:55:40,788 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@429f7ba0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 08:55:40, skipping insertion in model container [2025-02-07 20:55:40,789 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:55:40" (2/3) ... [2025-02-07 20:55:40,789 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@429f7ba0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 08:55:40, skipping insertion in model container [2025-02-07 20:55:40,789 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 08:55:40" (3/3) ... [2025-02-07 20:55:40,790 INFO L128 eAbstractionObserver]: Analyzing ICFG sqrt1-ll_unwindbound2.c [2025-02-07 20:55:40,798 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-07 20:55:40,799 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG sqrt1-ll_unwindbound2.c that has 2 procedures, 19 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-02-07 20:55:40,829 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-07 20:55:40,837 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;@55e3ced9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-07 20:55:40,838 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-07 20:55:40,840 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-07 20:55:40,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-02-07 20:55:40,845 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:55:40,846 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-07 20:55:40,846 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:55:40,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:55:40,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1330695385, now seen corresponding path program 1 times [2025-02-07 20:55:40,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:55:40,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291187333] [2025-02-07 20:55:40,855 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:55:40,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:55:40,903 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-07 20:55:40,914 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-07 20:55:40,914 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:55:40,914 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:55:40,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 20:55:40,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:55:40,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291187333] [2025-02-07 20:55:40,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291187333] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 20:55:40,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 20:55:40,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-07 20:55:40,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838268983] [2025-02-07 20:55:40,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 20:55:40,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-07 20:55:40,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:55:40,967 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-07 20:55:40,967 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-07 20:55:40,968 INFO L87 Difference]: Start difference. First operand has 19 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 20:55:40,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:55:40,978 INFO L93 Difference]: Finished difference Result 37 states and 59 transitions. [2025-02-07 20:55:40,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-07 20:55:40,980 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2025-02-07 20:55:40,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:55:40,983 INFO L225 Difference]: With dead ends: 37 [2025-02-07 20:55:40,983 INFO L226 Difference]: Without dead ends: 16 [2025-02-07 20:55:40,985 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-07 20:55:40,987 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 20:55:40,987 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 20:55:40,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2025-02-07 20:55:41,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2025-02-07 20:55:41,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-07 20:55:41,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 22 transitions. [2025-02-07 20:55:41,009 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 22 transitions. Word has length 6 [2025-02-07 20:55:41,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:55:41,010 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 22 transitions. [2025-02-07 20:55:41,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 20:55:41,011 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 22 transitions. [2025-02-07 20:55:41,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-02-07 20:55:41,011 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:55:41,011 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:55:41,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-07 20:55:41,012 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:55:41,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:55:41,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1741162049, now seen corresponding path program 1 times [2025-02-07 20:55:41,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:55:41,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508892048] [2025-02-07 20:55:41,013 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:55:41,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:55:41,018 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-07 20:55:41,030 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-07 20:55:41,030 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:55:41,031 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:55:41,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 20:55:41,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:55:41,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508892048] [2025-02-07 20:55:41,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508892048] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 20:55:41,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 20:55:41,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-07 20:55:41,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227913813] [2025-02-07 20:55:41,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 20:55:41,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-07 20:55:41,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:55:41,164 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-07 20:55:41,164 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-07 20:55:41,164 INFO L87 Difference]: Start difference. First operand 16 states and 22 transitions. Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 20:55:41,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:55:41,225 INFO L93 Difference]: Finished difference Result 31 states and 43 transitions. [2025-02-07 20:55:41,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-07 20:55:41,226 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-02-07 20:55:41,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:55:41,226 INFO L225 Difference]: With dead ends: 31 [2025-02-07 20:55:41,227 INFO L226 Difference]: Without dead ends: 29 [2025-02-07 20:55:41,227 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-07 20:55:41,227 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 5 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 20:55:41,228 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 63 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 20:55:41,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2025-02-07 20:55:41,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2025-02-07 20:55:41,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 16 states have internal predecessors, (19), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2025-02-07 20:55:41,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 38 transitions. [2025-02-07 20:55:41,234 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 38 transitions. Word has length 7 [2025-02-07 20:55:41,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:55:41,234 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 38 transitions. [2025-02-07 20:55:41,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 20:55:41,234 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 38 transitions. [2025-02-07 20:55:41,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-02-07 20:55:41,235 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:55:41,235 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:55:41,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-07 20:55:41,235 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:55:41,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:55:41,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1550871349, now seen corresponding path program 1 times [2025-02-07 20:55:41,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:55:41,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364778767] [2025-02-07 20:55:41,236 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:55:41,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:55:41,240 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-07 20:55:41,245 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-07 20:55:41,245 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:55:41,245 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-07 20:55:41,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [44540700] [2025-02-07 20:55:41,246 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:55:41,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:55:41,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:55:41,253 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 20:55:41,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-07 20:55:41,279 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-07 20:55:41,287 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-07 20:55:41,287 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:55:41,287 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:55:41,288 INFO L256 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-07 20:55:41,291 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:55:41,361 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 20:55:41,361 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-07 20:55:41,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:55:41,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364778767] [2025-02-07 20:55:41,363 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-07 20:55:41,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44540700] [2025-02-07 20:55:41,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44540700] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 20:55:41,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 20:55:41,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-07 20:55:41,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196026764] [2025-02-07 20:55:41,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 20:55:41,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-07 20:55:41,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:55:41,364 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-07 20:55:41,364 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-07 20:55:41,364 INFO L87 Difference]: Start difference. First operand 27 states and 38 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-07 20:55:41,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:55:41,410 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2025-02-07 20:55:41,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-07 20:55:41,411 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2025-02-07 20:55:41,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:55:41,411 INFO L225 Difference]: With dead ends: 35 [2025-02-07 20:55:41,412 INFO L226 Difference]: Without dead ends: 33 [2025-02-07 20:55:41,412 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-07 20:55:41,413 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 5 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 20:55:41,414 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 66 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 20:55:41,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2025-02-07 20:55:41,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2025-02-07 20:55:41,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 19 states have internal predecessors, (22), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2025-02-07 20:55:41,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 43 transitions. [2025-02-07 20:55:41,420 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 43 transitions. Word has length 12 [2025-02-07 20:55:41,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:55:41,422 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 43 transitions. [2025-02-07 20:55:41,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-07 20:55:41,423 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 43 transitions. [2025-02-07 20:55:41,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-02-07 20:55:41,424 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:55:41,424 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:55:41,431 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-07 20:55:41,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:55:41,625 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:55:41,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:55:41,626 INFO L85 PathProgramCache]: Analyzing trace with hash 404052927, now seen corresponding path program 1 times [2025-02-07 20:55:41,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:55:41,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010526123] [2025-02-07 20:55:41,626 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:55:41,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:55:41,631 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-07 20:55:41,642 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-07 20:55:41,645 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:55:41,645 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-07 20:55:41,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1202129169] [2025-02-07 20:55:41,646 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:55:41,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:55:41,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:55:41,653 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 20:55:41,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-07 20:55:41,689 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-07 20:55:41,698 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-07 20:55:41,698 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:55:41,698 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:55:41,699 INFO L256 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-07 20:55:41,704 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:55:41,781 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-07 20:55:41,782 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-07 20:55:41,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:55:41,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010526123] [2025-02-07 20:55:41,782 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-07 20:55:41,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202129169] [2025-02-07 20:55:41,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1202129169] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 20:55:41,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 20:55:41,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-07 20:55:41,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214993865] [2025-02-07 20:55:41,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 20:55:41,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-07 20:55:41,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:55:41,784 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-07 20:55:41,784 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-07 20:55:41,784 INFO L87 Difference]: Start difference. First operand 32 states and 43 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-07 20:55:41,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:55:41,826 INFO L93 Difference]: Finished difference Result 39 states and 49 transitions. [2025-02-07 20:55:41,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-07 20:55:41,826 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2025-02-07 20:55:41,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:55:41,827 INFO L225 Difference]: With dead ends: 39 [2025-02-07 20:55:41,828 INFO L226 Difference]: Without dead ends: 34 [2025-02-07 20:55:41,828 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-07 20:55:41,829 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 5 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 20:55:41,829 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 69 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 20:55:41,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2025-02-07 20:55:41,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2025-02-07 20:55:41,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2025-02-07 20:55:41,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2025-02-07 20:55:41,837 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 17 [2025-02-07 20:55:41,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:55:41,837 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2025-02-07 20:55:41,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-07 20:55:41,837 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2025-02-07 20:55:41,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-02-07 20:55:41,838 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:55:41,838 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:55:41,845 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-07 20:55:42,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:55:42,039 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:55:42,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:55:42,040 INFO L85 PathProgramCache]: Analyzing trace with hash 545033948, now seen corresponding path program 1 times [2025-02-07 20:55:42,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:55:42,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173053175] [2025-02-07 20:55:42,040 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:55:42,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:55:42,050 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-07 20:55:42,060 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-07 20:55:42,060 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:55:42,060 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:55:42,192 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-07 20:55:42,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:55:42,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173053175] [2025-02-07 20:55:42,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173053175] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 20:55:42,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935223563] [2025-02-07 20:55:42,193 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:55:42,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:55:42,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:55:42,195 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 20:55:42,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-07 20:55:42,218 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-07 20:55:42,228 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-07 20:55:42,228 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:55:42,228 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:55:42,229 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-07 20:55:42,230 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:55:42,278 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-07 20:55:42,278 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 20:55:42,341 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-02-07 20:55:42,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935223563] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-07 20:55:42,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-07 20:55:42,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6] total 9 [2025-02-07 20:55:42,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442143738] [2025-02-07 20:55:42,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 20:55:42,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-07 20:55:42,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:55:42,345 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-07 20:55:42,345 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2025-02-07 20:55:42,345 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2025-02-07 20:55:42,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:55:42,378 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2025-02-07 20:55:42,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-07 20:55:42,378 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2025-02-07 20:55:42,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:55:42,379 INFO L225 Difference]: With dead ends: 40 [2025-02-07 20:55:42,379 INFO L226 Difference]: Without dead ends: 38 [2025-02-07 20:55:42,379 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2025-02-07 20:55:42,380 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 5 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 20:55:42,380 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 54 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 20:55:42,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2025-02-07 20:55:42,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2025-02-07 20:55:42,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 24 states have internal predecessors, (26), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2025-02-07 20:55:42,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2025-02-07 20:55:42,385 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 25 [2025-02-07 20:55:42,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:55:42,385 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2025-02-07 20:55:42,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2025-02-07 20:55:42,385 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2025-02-07 20:55:42,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-02-07 20:55:42,386 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:55:42,386 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:55:42,391 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 [2025-02-07 20:55:42,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:55:42,586 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:55:42,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:55:42,587 INFO L85 PathProgramCache]: Analyzing trace with hash -767721416, now seen corresponding path program 2 times [2025-02-07 20:55:42,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:55:42,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971105080] [2025-02-07 20:55:42,587 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 20:55:42,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:55:42,592 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-02-07 20:55:42,597 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-02-07 20:55:42,597 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 20:55:42,597 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-07 20:55:42,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1239419105] [2025-02-07 20:55:42,598 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 20:55:42,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:55:42,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:55:42,600 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 20:55:42,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-07 20:55:42,621 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-02-07 20:55:42,631 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-02-07 20:55:42,631 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 20:55:42,631 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:55:42,632 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-02-07 20:55:42,633 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:55:42,732 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-02-07 20:55:42,732 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 20:55:42,841 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-02-07 20:55:42,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:55:42,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971105080] [2025-02-07 20:55:42,842 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-07 20:55:42,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239419105] [2025-02-07 20:55:42,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239419105] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 20:55:42,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-07 20:55:42,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 13 [2025-02-07 20:55:42,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991333419] [2025-02-07 20:55:42,842 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-07 20:55:42,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-07 20:55:42,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:55:42,843 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-07 20:55:42,843 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2025-02-07 20:55:42,843 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand has 13 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2025-02-07 20:55:42,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:55:42,939 INFO L93 Difference]: Finished difference Result 61 states and 74 transitions. [2025-02-07 20:55:42,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-07 20:55:42,940 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 30 [2025-02-07 20:55:42,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:55:42,941 INFO L225 Difference]: With dead ends: 61 [2025-02-07 20:55:42,941 INFO L226 Difference]: Without dead ends: 56 [2025-02-07 20:55:42,941 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2025-02-07 20:55:42,942 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 13 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 20:55:42,942 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 109 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 20:55:42,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2025-02-07 20:55:42,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 52. [2025-02-07 20:55:42,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 32 states have (on average 1.09375) internal successors, (35), 33 states have internal predecessors, (35), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2025-02-07 20:55:42,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 58 transitions. [2025-02-07 20:55:42,950 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 58 transitions. Word has length 30 [2025-02-07 20:55:42,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:55:42,950 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 58 transitions. [2025-02-07 20:55:42,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2025-02-07 20:55:42,950 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 58 transitions. [2025-02-07 20:55:42,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-02-07 20:55:42,951 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:55:42,951 INFO L218 NwaCegarLoop]: trace histogram [9, 8, 8, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1] [2025-02-07 20:55:42,957 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-07 20:55:43,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2025-02-07 20:55:43,155 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:55:43,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:55:43,156 INFO L85 PathProgramCache]: Analyzing trace with hash 2107369529, now seen corresponding path program 3 times [2025-02-07 20:55:43,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:55:43,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235374719] [2025-02-07 20:55:43,156 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 20:55:43,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:55:43,161 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 53 statements into 5 equivalence classes. [2025-02-07 20:55:43,171 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 38 of 53 statements. [2025-02-07 20:55:43,173 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-07 20:55:43,173 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:55:43,260 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 27 proven. 5 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2025-02-07 20:55:43,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:55:43,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235374719] [2025-02-07 20:55:43,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235374719] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 20:55:43,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041060366] [2025-02-07 20:55:43,261 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 20:55:43,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:55:43,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:55:43,266 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 20:55:43,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-07 20:55:43,290 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 53 statements into 5 equivalence classes. [2025-02-07 20:55:43,305 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 38 of 53 statements. [2025-02-07 20:55:43,307 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-07 20:55:43,307 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:55:43,308 INFO L256 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-07 20:55:43,309 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:55:43,362 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 110 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-02-07 20:55:43,363 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 20:55:43,422 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2025-02-07 20:55:43,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041060366] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 20:55:43,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 20:55:43,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 6] total 8 [2025-02-07 20:55:43,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180968638] [2025-02-07 20:55:43,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 20:55:43,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-07 20:55:43,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:55:43,423 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-07 20:55:43,424 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2025-02-07 20:55:43,424 INFO L87 Difference]: Start difference. First operand 52 states and 58 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 3 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2025-02-07 20:55:43,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:55:43,487 INFO L93 Difference]: Finished difference Result 71 states and 77 transitions. [2025-02-07 20:55:43,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-07 20:55:43,487 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), 3 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 53 [2025-02-07 20:55:43,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:55:43,488 INFO L225 Difference]: With dead ends: 71 [2025-02-07 20:55:43,488 INFO L226 Difference]: Without dead ends: 46 [2025-02-07 20:55:43,488 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 102 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2025-02-07 20:55:43,488 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 8 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 20:55:43,489 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 81 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 20:55:43,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2025-02-07 20:55:43,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2025-02-07 20:55:43,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 30 states have (on average 1.0) internal successors, (30), 30 states have internal predecessors, (30), 9 states have call successors, (9), 7 states have call predecessors, (9), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2025-02-07 20:55:43,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2025-02-07 20:55:43,494 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 53 [2025-02-07 20:55:43,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:55:43,494 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2025-02-07 20:55:43,495 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), 3 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2025-02-07 20:55:43,495 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2025-02-07 20:55:43,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-02-07 20:55:43,495 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:55:43,495 INFO L218 NwaCegarLoop]: trace histogram [9, 8, 8, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:55:43,503 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 [2025-02-07 20:55:43,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:55:43,700 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:55:43,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:55:43,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1486491840, now seen corresponding path program 1 times [2025-02-07 20:55:43,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:55:43,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690241263] [2025-02-07 20:55:43,700 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:55:43,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:55:43,705 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 53 statements into 1 equivalence classes. [2025-02-07 20:55:43,713 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 53 of 53 statements. [2025-02-07 20:55:43,713 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:55:43,713 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-07 20:55:43,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [613787970] [2025-02-07 20:55:43,713 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:55:43,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:55:43,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:55:43,718 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 20:55:43,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-07 20:55:43,740 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 53 statements into 1 equivalence classes. [2025-02-07 20:55:43,753 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 53 of 53 statements. [2025-02-07 20:55:43,753 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:55:43,753 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:55:43,754 INFO L256 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-02-07 20:55:43,755 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:55:43,843 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 15 proven. 32 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2025-02-07 20:55:43,844 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 20:55:44,007 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 20 proven. 22 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2025-02-07 20:55:44,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:55:44,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690241263] [2025-02-07 20:55:44,007 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-07 20:55:44,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613787970] [2025-02-07 20:55:44,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613787970] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 20:55:44,008 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-07 20:55:44,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 13 [2025-02-07 20:55:44,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177003992] [2025-02-07 20:55:44,008 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-07 20:55:44,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-07 20:55:44,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:55:44,009 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-07 20:55:44,009 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2025-02-07 20:55:44,009 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 12 states have internal predecessors, (29), 5 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) [2025-02-07 20:55:44,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:55:44,074 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2025-02-07 20:55:44,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-07 20:55:44,075 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 12 states have internal predecessors, (29), 5 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) Word has length 53 [2025-02-07 20:55:44,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:55:44,075 INFO L225 Difference]: With dead ends: 50 [2025-02-07 20:55:44,075 INFO L226 Difference]: Without dead ends: 0 [2025-02-07 20:55:44,075 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2025-02-07 20:55:44,076 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 3 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 20:55:44,076 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 65 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 20:55:44,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-02-07 20:55:44,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-02-07 20:55:44,076 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) [2025-02-07 20:55:44,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-02-07 20:55:44,077 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 53 [2025-02-07 20:55:44,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:55:44,077 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-07 20:55:44,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 12 states have internal predecessors, (29), 5 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) [2025-02-07 20:55:44,077 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-02-07 20:55:44,077 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-02-07 20:55:44,079 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-02-07 20:55:44,086 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-07 20:55:44,283 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,SelfDestructingSolverStorable7 [2025-02-07 20:55:44,285 INFO L422 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1] [2025-02-07 20:55:44,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2025-02-07 20:55:44,448 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-07 20:55:44,456 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.02 08:55:44 BoogieIcfgContainer [2025-02-07 20:55:44,456 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-07 20:55:44,457 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-07 20:55:44,457 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-07 20:55:44,457 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-07 20:55:44,457 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 08:55:40" (3/4) ... [2025-02-07 20:55:44,459 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-02-07 20:55:44,462 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2025-02-07 20:55:44,464 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2025-02-07 20:55:44,464 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-02-07 20:55:44,464 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-02-07 20:55:44,464 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-02-07 20:55:44,509 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-07 20:55:44,509 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-02-07 20:55:44,509 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-07 20:55:44,510 INFO L158 Benchmark]: Toolchain (without parser) took 4078.22ms. Allocated memory is still 142.6MB. Free memory was 111.1MB in the beginning and 107.0MB in the end (delta: 4.1MB). Peak memory consumption was 1.4MB. Max. memory is 16.1GB. [2025-02-07 20:55:44,510 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 201.3MB. Free memory is still 128.1MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-07 20:55:44,510 INFO L158 Benchmark]: CACSL2BoogieTranslator took 141.53ms. Allocated memory is still 142.6MB. Free memory was 111.1MB in the beginning and 100.1MB in the end (delta: 11.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-07 20:55:44,510 INFO L158 Benchmark]: Boogie Procedure Inliner took 15.62ms. Allocated memory is still 142.6MB. Free memory was 100.1MB in the beginning and 99.3MB in the end (delta: 814.5kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-07 20:55:44,510 INFO L158 Benchmark]: Boogie Preprocessor took 14.05ms. Allocated memory is still 142.6MB. Free memory was 99.3MB in the beginning and 97.6MB in the end (delta: 1.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-07 20:55:44,510 INFO L158 Benchmark]: IcfgBuilder took 178.23ms. Allocated memory is still 142.6MB. Free memory was 97.6MB in the beginning and 86.7MB in the end (delta: 10.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-07 20:55:44,510 INFO L158 Benchmark]: TraceAbstraction took 3671.04ms. Allocated memory is still 142.6MB. Free memory was 85.9MB in the beginning and 113.3MB in the end (delta: -27.5MB). Peak memory consumption was 51.8MB. Max. memory is 16.1GB. [2025-02-07 20:55:44,511 INFO L158 Benchmark]: Witness Printer took 52.57ms. Allocated memory is still 142.6MB. Free memory was 113.3MB in the beginning and 107.0MB in the end (delta: 6.3MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-07 20:55:44,511 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 201.3MB. Free memory is still 128.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 141.53ms. Allocated memory is still 142.6MB. Free memory was 111.1MB in the beginning and 100.1MB in the end (delta: 11.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 15.62ms. Allocated memory is still 142.6MB. Free memory was 100.1MB in the beginning and 99.3MB in the end (delta: 814.5kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 14.05ms. Allocated memory is still 142.6MB. Free memory was 99.3MB in the beginning and 97.6MB in the end (delta: 1.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 178.23ms. Allocated memory is still 142.6MB. Free memory was 97.6MB in the beginning and 86.7MB in the end (delta: 10.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 3671.04ms. Allocated memory is still 142.6MB. Free memory was 85.9MB in the beginning and 113.3MB in the end (delta: -27.5MB). Peak memory consumption was 51.8MB. Max. memory is 16.1GB. * Witness Printer took 52.57ms. Allocated memory is still 142.6MB. Free memory was 113.3MB in the beginning and 107.0MB in the end (delta: 6.3MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 14]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.5s, OverallIterations: 8, TraceHistogramMax: 9, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 67 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 44 mSDsluCounter, 532 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 371 mSDsCounter, 36 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 348 IncrementalHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 36 mSolverCounterUnsat, 161 mSDtfsCounter, 348 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 367 GetRequests, 311 SyntacticMatches, 5 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred in iteration=6, InterpolantAutomatonStates: 48, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 7 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 393 NumberOfCodeBlocks, 363 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 428 ConstructedInterpolants, 0 QuantifiedInterpolants, 1480 SizeOfPredicates, 9 NumberOfNonLiveVariables, 549 ConjunctsInSsa, 82 ConjunctsInUnsatCore, 14 InterpolantComputations, 5 PerfectInterpolantSequences, 778/853 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 30]: Location Invariant Derived location invariant: ((((((t == 1) && (counter == 0)) && (a == 0)) && (s == 1)) || ((((3 == t) && (a == 1)) && (1 <= counter)) && (s == 4))) || ((((2 <= counter) && (5 == t)) && (9 == s)) && (2 == a))) RESULT: Ultimate proved your program to be correct! [2025-02-07 20:55:44,522 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE