./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound5.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/egcd-ll_valuebound5.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 3f9b33d2a8120d9ea8a3a6c5d650c2a90b549ffb583b3e9890b411aeb4530efd --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-07 20:34:03,853 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-07 20:34:03,890 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-07 20:34:03,894 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-07 20:34:03,894 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-07 20:34:03,911 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-07 20:34:03,912 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-07 20:34:03,912 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-07 20:34:03,912 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-07 20:34:03,912 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-07 20:34:03,913 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-07 20:34:03,913 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-07 20:34:03,914 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-07 20:34:03,914 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-07 20:34:03,914 INFO L153 SettingsManager]: * Use SBE=true [2025-02-07 20:34:03,914 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-07 20:34:03,914 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-07 20:34:03,915 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-07 20:34:03,915 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-07 20:34:03,915 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-07 20:34:03,915 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-07 20:34:03,915 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-07 20:34:03,915 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-07 20:34:03,915 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-07 20:34:03,915 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-07 20:34:03,915 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-07 20:34:03,915 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-07 20:34:03,915 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-07 20:34:03,915 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-07 20:34:03,915 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-07 20:34:03,916 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-07 20:34:03,916 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-07 20:34:03,916 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 20:34:03,916 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-07 20:34:03,916 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-07 20:34:03,916 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-07 20:34:03,916 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-07 20:34:03,916 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-07 20:34:03,916 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-07 20:34:03,916 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-07 20:34:03,916 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-07 20:34:03,916 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-07 20:34:03,916 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-07 20:34:03,916 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 -> 3f9b33d2a8120d9ea8a3a6c5d650c2a90b549ffb583b3e9890b411aeb4530efd [2025-02-07 20:34:04,113 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-07 20:34:04,121 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-07 20:34:04,122 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-07 20:34:04,123 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-07 20:34:04,123 INFO L274 PluginConnector]: CDTParser initialized [2025-02-07 20:34:04,124 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound5.c [2025-02-07 20:34:05,281 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/08f9a5224/e1543ebde7444af9b0164835badebdc1/FLAG18007b887 [2025-02-07 20:34:05,478 INFO L384 CDTParser]: Found 1 translation units. [2025-02-07 20:34:05,480 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound5.c [2025-02-07 20:34:05,497 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/08f9a5224/e1543ebde7444af9b0164835badebdc1/FLAG18007b887 [2025-02-07 20:34:05,518 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/08f9a5224/e1543ebde7444af9b0164835badebdc1 [2025-02-07 20:34:05,520 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-07 20:34:05,521 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-07 20:34:05,526 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-07 20:34:05,526 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-07 20:34:05,529 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-07 20:34:05,530 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 08:34:05" (1/1) ... [2025-02-07 20:34:05,530 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b11a366 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:34:05, skipping insertion in model container [2025-02-07 20:34:05,532 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 08:34:05" (1/1) ... [2025-02-07 20:34:05,544 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-07 20:34:05,661 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/egcd-ll_valuebound5.c[489,502] [2025-02-07 20:34:05,680 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 20:34:05,692 INFO L200 MainTranslator]: Completed pre-run [2025-02-07 20:34:05,700 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/egcd-ll_valuebound5.c[489,502] [2025-02-07 20:34:05,706 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 20:34:05,715 INFO L204 MainTranslator]: Completed translation [2025-02-07 20:34:05,716 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:34:05 WrapperNode [2025-02-07 20:34:05,716 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-07 20:34:05,717 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-07 20:34:05,717 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-07 20:34:05,717 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-07 20:34:05,723 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:34:05" (1/1) ... [2025-02-07 20:34:05,727 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:34:05" (1/1) ... [2025-02-07 20:34:05,737 INFO L138 Inliner]: procedures = 14, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 54 [2025-02-07 20:34:05,739 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-07 20:34:05,740 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-07 20:34:05,740 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-07 20:34:05,740 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-07 20:34:05,747 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:34:05" (1/1) ... [2025-02-07 20:34:05,747 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:34:05" (1/1) ... [2025-02-07 20:34:05,748 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:34:05" (1/1) ... [2025-02-07 20:34:05,755 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 20:34:05,755 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:34:05" (1/1) ... [2025-02-07 20:34:05,755 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:34:05" (1/1) ... [2025-02-07 20:34:05,757 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:34:05" (1/1) ... [2025-02-07 20:34:05,757 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:34:05" (1/1) ... [2025-02-07 20:34:05,758 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:34:05" (1/1) ... [2025-02-07 20:34:05,758 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:34:05" (1/1) ... [2025-02-07 20:34:05,759 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-07 20:34:05,759 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-07 20:34:05,759 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-07 20:34:05,760 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-07 20:34:05,760 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:34:05" (1/1) ... [2025-02-07 20:34:05,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 20:34:05,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:34:05,784 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 20:34:05,791 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 20:34:05,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-07 20:34:05,808 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-02-07 20:34:05,808 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-02-07 20:34:05,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-07 20:34:05,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-07 20:34:05,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-07 20:34:05,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-02-07 20:34:05,809 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-02-07 20:34:05,851 INFO L257 CfgBuilder]: Building ICFG [2025-02-07 20:34:05,852 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-07 20:34:05,973 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2025-02-07 20:34:05,973 INFO L308 CfgBuilder]: Performing block encoding [2025-02-07 20:34:05,979 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-07 20:34:05,981 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-07 20:34:05,981 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 08:34:05 BoogieIcfgContainer [2025-02-07 20:34:05,981 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-07 20:34:05,982 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-07 20:34:05,983 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-07 20:34:05,986 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-07 20:34:05,986 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 08:34:05" (1/3) ... [2025-02-07 20:34:05,987 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55c45621 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 08:34:05, skipping insertion in model container [2025-02-07 20:34:05,987 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:34:05" (2/3) ... [2025-02-07 20:34:05,987 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55c45621 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 08:34:05, skipping insertion in model container [2025-02-07 20:34:05,988 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 08:34:05" (3/3) ... [2025-02-07 20:34:05,989 INFO L128 eAbstractionObserver]: Analyzing ICFG egcd-ll_valuebound5.c [2025-02-07 20:34:05,999 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-07 20:34:06,000 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG egcd-ll_valuebound5.c that has 3 procedures, 30 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-02-07 20:34:06,044 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-07 20:34:06,051 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;@3c774b2e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-07 20:34:06,053 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-07 20:34:06,057 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2025-02-07 20:34:06,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-02-07 20:34:06,062 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:34:06,062 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:34:06,063 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:34:06,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:34:06,068 INFO L85 PathProgramCache]: Analyzing trace with hash -255659426, now seen corresponding path program 1 times [2025-02-07 20:34:06,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:34:06,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018753170] [2025-02-07 20:34:06,073 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:34:06,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:34:06,131 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-07 20:34:06,144 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-07 20:34:06,144 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:34:06,145 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:34:06,206 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-02-07 20:34:06,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:34:06,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018753170] [2025-02-07 20:34:06,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018753170] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 20:34:06,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038554766] [2025-02-07 20:34:06,207 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:34:06,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:34:06,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:34:06,209 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 20:34:06,217 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 20:34:06,254 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-07 20:34:06,277 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-07 20:34:06,277 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:34:06,277 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:34:06,280 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-02-07 20:34:06,282 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:34:06,291 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-02-07 20:34:06,291 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-07 20:34:06,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038554766] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 20:34:06,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-07 20:34:06,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-02-07 20:34:06,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973519357] [2025-02-07 20:34:06,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 20:34:06,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-07 20:34:06,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:34:06,307 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-07 20:34:06,308 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-07 20:34:06,309 INFO L87 Difference]: Start difference. First operand has 30 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-07 20:34:06,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:34:06,321 INFO L93 Difference]: Finished difference Result 58 states and 94 transitions. [2025-02-07 20:34:06,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-07 20:34:06,322 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2025-02-07 20:34:06,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:34:06,326 INFO L225 Difference]: With dead ends: 58 [2025-02-07 20:34:06,326 INFO L226 Difference]: Without dead ends: 27 [2025-02-07 20:34:06,328 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 29 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 20:34:06,330 INFO L435 NwaCegarLoop]: 40 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, 40 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 20:34:06,330 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 20:34:06,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2025-02-07 20:34:06,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2025-02-07 20:34:06,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2025-02-07 20:34:06,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2025-02-07 20:34:06,352 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 28 [2025-02-07 20:34:06,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:34:06,353 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2025-02-07 20:34:06,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-07 20:34:06,353 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2025-02-07 20:34:06,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-02-07 20:34:06,354 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:34:06,354 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:34:06,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-07 20:34:06,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-02-07 20:34:06,558 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:34:06,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:34:06,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1195386432, now seen corresponding path program 1 times [2025-02-07 20:34:06,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:34:06,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890318998] [2025-02-07 20:34:06,561 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:34:06,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:34:06,577 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-07 20:34:06,593 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-07 20:34:06,593 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:34:06,593 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-07 20:34:06,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [787032815] [2025-02-07 20:34:06,595 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:34:06,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:34:06,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:34:06,597 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 20:34:06,598 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 20:34:06,630 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-07 20:34:06,651 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-07 20:34:06,651 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:34:06,651 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:34:06,654 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-07 20:34:06,655 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:34:06,736 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-02-07 20:34:06,737 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-07 20:34:06,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:34:06,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890318998] [2025-02-07 20:34:06,737 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-07 20:34:06,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787032815] [2025-02-07 20:34:06,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787032815] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 20:34:06,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 20:34:06,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-07 20:34:06,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511699889] [2025-02-07 20:34:06,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 20:34:06,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-07 20:34:06,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:34:06,739 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-07 20:34:06,740 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-07 20:34:06,740 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-02-07 20:34:06,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:34:06,786 INFO L93 Difference]: Finished difference Result 43 states and 60 transitions. [2025-02-07 20:34:06,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-07 20:34:06,787 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), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 28 [2025-02-07 20:34:06,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:34:06,788 INFO L225 Difference]: With dead ends: 43 [2025-02-07 20:34:06,788 INFO L226 Difference]: Without dead ends: 41 [2025-02-07 20:34:06,788 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 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 20:34:06,789 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 5 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 20:34:06,789 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 117 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 20:34:06,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2025-02-07 20:34:06,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2025-02-07 20:34:06,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 19 states have (on average 1.263157894736842) internal successors, (24), 21 states have internal predecessors, (24), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2025-02-07 20:34:06,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 57 transitions. [2025-02-07 20:34:06,796 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 57 transitions. Word has length 28 [2025-02-07 20:34:06,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:34:06,796 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 57 transitions. [2025-02-07 20:34:06,796 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), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-02-07 20:34:06,796 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 57 transitions. [2025-02-07 20:34:06,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-02-07 20:34:06,797 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:34:06,797 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:34:06,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-07 20:34:06,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:34:06,998 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:34:06,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:34:06,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1205237411, now seen corresponding path program 1 times [2025-02-07 20:34:06,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:34:06,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109399165] [2025-02-07 20:34:06,998 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:34:06,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:34:07,006 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-02-07 20:34:07,017 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-02-07 20:34:07,017 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:34:07,017 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-07 20:34:07,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1321169171] [2025-02-07 20:34:07,018 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:34:07,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:34:07,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:34:07,024 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 20:34:07,025 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 20:34:07,060 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-02-07 20:34:07,093 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-02-07 20:34:07,093 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:34:07,093 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:34:07,094 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-07 20:34:07,096 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:34:07,160 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-02-07 20:34:07,161 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-07 20:34:07,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:34:07,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109399165] [2025-02-07 20:34:07,161 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-07 20:34:07,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321169171] [2025-02-07 20:34:07,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321169171] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 20:34:07,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 20:34:07,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-07 20:34:07,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298439199] [2025-02-07 20:34:07,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 20:34:07,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-07 20:34:07,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:34:07,162 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-07 20:34:07,162 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-07 20:34:07,162 INFO L87 Difference]: Start difference. First operand 40 states and 57 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-07 20:34:07,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:34:07,216 INFO L93 Difference]: Finished difference Result 65 states and 97 transitions. [2025-02-07 20:34:07,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-07 20:34:07,216 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2025-02-07 20:34:07,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:34:07,218 INFO L225 Difference]: With dead ends: 65 [2025-02-07 20:34:07,218 INFO L226 Difference]: Without dead ends: 63 [2025-02-07 20:34:07,219 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 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 20:34:07,219 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 6 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 20:34:07,219 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 119 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 20:34:07,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2025-02-07 20:34:07,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 56. [2025-02-07 20:34:07,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 30 states have internal predecessors, (37), 23 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2025-02-07 20:34:07,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 82 transitions. [2025-02-07 20:34:07,229 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 82 transitions. Word has length 33 [2025-02-07 20:34:07,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:34:07,230 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 82 transitions. [2025-02-07 20:34:07,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-07 20:34:07,230 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 82 transitions. [2025-02-07 20:34:07,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-02-07 20:34:07,230 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:34:07,231 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:34:07,239 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-07 20:34:07,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:34:07,435 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:34:07,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:34:07,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1639908320, now seen corresponding path program 1 times [2025-02-07 20:34:07,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:34:07,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845927908] [2025-02-07 20:34:07,436 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:34:07,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:34:07,442 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-02-07 20:34:07,454 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-02-07 20:34:07,454 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:34:07,454 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-07 20:34:07,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1504247614] [2025-02-07 20:34:07,455 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:34:07,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:34:07,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:34:07,457 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 20:34:07,458 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 20:34:07,483 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-02-07 20:34:07,496 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-02-07 20:34:07,496 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:34:07,496 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:34:07,497 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-07 20:34:07,498 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:34:07,543 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2025-02-07 20:34:07,544 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-07 20:34:07,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:34:07,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845927908] [2025-02-07 20:34:07,544 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-07 20:34:07,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504247614] [2025-02-07 20:34:07,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504247614] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 20:34:07,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 20:34:07,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-07 20:34:07,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437402430] [2025-02-07 20:34:07,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 20:34:07,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-07 20:34:07,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:34:07,545 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-07 20:34:07,545 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-07 20:34:07,545 INFO L87 Difference]: Start difference. First operand 56 states and 82 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2025-02-07 20:34:07,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:34:07,588 INFO L93 Difference]: Finished difference Result 63 states and 88 transitions. [2025-02-07 20:34:07,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-07 20:34:07,589 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 38 [2025-02-07 20:34:07,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:34:07,590 INFO L225 Difference]: With dead ends: 63 [2025-02-07 20:34:07,590 INFO L226 Difference]: Without dead ends: 59 [2025-02-07 20:34:07,590 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 34 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 20:34:07,591 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 6 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 20:34:07,591 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 118 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 20:34:07,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2025-02-07 20:34:07,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2025-02-07 20:34:07,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 33 states have internal predecessors, (40), 22 states have call successors, (22), 5 states have call predecessors, (22), 5 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-02-07 20:34:07,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 82 transitions. [2025-02-07 20:34:07,598 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 82 transitions. Word has length 38 [2025-02-07 20:34:07,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:34:07,603 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 82 transitions. [2025-02-07 20:34:07,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2025-02-07 20:34:07,603 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 82 transitions. [2025-02-07 20:34:07,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2025-02-07 20:34:07,603 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:34:07,604 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:34:07,610 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-07 20:34:07,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:34:07,805 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:34:07,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:34:07,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1354723784, now seen corresponding path program 1 times [2025-02-07 20:34:07,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:34:07,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774098405] [2025-02-07 20:34:07,805 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:34:07,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:34:07,810 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-02-07 20:34:07,817 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-02-07 20:34:07,817 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:34:07,818 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:34:07,936 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-02-07 20:34:07,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:34:07,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774098405] [2025-02-07 20:34:07,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774098405] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 20:34:07,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 20:34:07,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-07 20:34:07,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550575456] [2025-02-07 20:34:07,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 20:34:07,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-07 20:34:07,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:34:07,938 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-07 20:34:07,938 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-07 20:34:07,938 INFO L87 Difference]: Start difference. First operand 59 states and 82 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2025-02-07 20:34:07,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:34:07,977 INFO L93 Difference]: Finished difference Result 65 states and 87 transitions. [2025-02-07 20:34:07,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-07 20:34:07,978 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 44 [2025-02-07 20:34:07,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:34:07,979 INFO L225 Difference]: With dead ends: 65 [2025-02-07 20:34:07,979 INFO L226 Difference]: Without dead ends: 63 [2025-02-07 20:34:07,979 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 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 20:34:07,979 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 3 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 20:34:07,979 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 128 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 20:34:07,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2025-02-07 20:34:07,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2025-02-07 20:34:07,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 34 states have (on average 1.2647058823529411) internal successors, (43), 36 states have internal predecessors, (43), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-02-07 20:34:07,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 85 transitions. [2025-02-07 20:34:07,988 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 85 transitions. Word has length 44 [2025-02-07 20:34:07,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:34:07,988 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 85 transitions. [2025-02-07 20:34:07,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2025-02-07 20:34:07,988 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 85 transitions. [2025-02-07 20:34:07,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2025-02-07 20:34:07,989 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:34:07,989 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:34:07,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-07 20:34:07,989 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:34:07,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:34:07,990 INFO L85 PathProgramCache]: Analyzing trace with hash -559237831, now seen corresponding path program 1 times [2025-02-07 20:34:07,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:34:07,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944951719] [2025-02-07 20:34:07,990 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:34:07,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:34:07,995 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 46 statements into 1 equivalence classes. [2025-02-07 20:34:08,005 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 46 of 46 statements. [2025-02-07 20:34:08,006 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:34:08,006 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-07 20:34:08,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [632377715] [2025-02-07 20:34:08,007 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:34:08,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:34:08,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:34:08,011 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 20:34:08,015 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 20:34:08,039 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 46 statements into 1 equivalence classes. [2025-02-07 20:34:08,051 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 46 of 46 statements. [2025-02-07 20:34:08,052 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:34:08,052 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:34:08,054 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-07 20:34:08,055 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:34:08,151 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2025-02-07 20:34:08,151 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-07 20:34:08,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:34:08,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944951719] [2025-02-07 20:34:08,151 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-07 20:34:08,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632377715] [2025-02-07 20:34:08,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632377715] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 20:34:08,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 20:34:08,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-07 20:34:08,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080494] [2025-02-07 20:34:08,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 20:34:08,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-07 20:34:08,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:34:08,152 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-07 20:34:08,152 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-07 20:34:08,152 INFO L87 Difference]: Start difference. First operand 63 states and 85 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-02-07 20:34:08,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:34:08,197 INFO L93 Difference]: Finished difference Result 79 states and 103 transitions. [2025-02-07 20:34:08,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-07 20:34:08,198 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 46 [2025-02-07 20:34:08,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:34:08,198 INFO L225 Difference]: With dead ends: 79 [2025-02-07 20:34:08,198 INFO L226 Difference]: Without dead ends: 77 [2025-02-07 20:34:08,199 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 42 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 20:34:08,199 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 4 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 20:34:08,199 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 117 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 20:34:08,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2025-02-07 20:34:08,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 74. [2025-02-07 20:34:08,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 40 states have (on average 1.225) internal successors, (49), 43 states have internal predecessors, (49), 25 states have call successors, (25), 8 states have call predecessors, (25), 8 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2025-02-07 20:34:08,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 97 transitions. [2025-02-07 20:34:08,219 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 97 transitions. Word has length 46 [2025-02-07 20:34:08,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:34:08,219 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 97 transitions. [2025-02-07 20:34:08,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-02-07 20:34:08,219 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 97 transitions. [2025-02-07 20:34:08,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2025-02-07 20:34:08,220 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:34:08,220 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:34:08,227 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-07 20:34:08,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:34:08,421 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:34:08,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:34:08,421 INFO L85 PathProgramCache]: Analyzing trace with hash -966289243, now seen corresponding path program 1 times [2025-02-07 20:34:08,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:34:08,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861204221] [2025-02-07 20:34:08,421 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:34:08,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:34:08,426 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 49 statements into 1 equivalence classes. [2025-02-07 20:34:08,433 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 49 of 49 statements. [2025-02-07 20:34:08,433 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:34:08,433 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:34:08,622 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2025-02-07 20:34:08,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:34:08,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861204221] [2025-02-07 20:34:08,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861204221] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 20:34:08,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639155030] [2025-02-07 20:34:08,623 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:34:08,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:34:08,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:34:08,627 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 20:34:08,629 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 20:34:08,653 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 49 statements into 1 equivalence classes. [2025-02-07 20:34:08,668 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 49 of 49 statements. [2025-02-07 20:34:08,668 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:34:08,668 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:34:08,669 INFO L256 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-07 20:34:08,670 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:34:08,775 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2025-02-07 20:34:08,775 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-07 20:34:08,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639155030] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 20:34:08,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-07 20:34:08,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2025-02-07 20:34:08,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766879122] [2025-02-07 20:34:08,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 20:34:08,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-07 20:34:08,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:34:08,777 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-07 20:34:08,777 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2025-02-07 20:34:08,777 INFO L87 Difference]: Start difference. First operand 74 states and 97 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-02-07 20:34:08,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:34:08,855 INFO L93 Difference]: Finished difference Result 87 states and 109 transitions. [2025-02-07 20:34:08,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-07 20:34:08,856 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 49 [2025-02-07 20:34:08,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:34:08,857 INFO L225 Difference]: With dead ends: 87 [2025-02-07 20:34:08,858 INFO L226 Difference]: Without dead ends: 83 [2025-02-07 20:34:08,858 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2025-02-07 20:34:08,859 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 6 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 20:34:08,859 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 142 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 20:34:08,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2025-02-07 20:34:08,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 82. [2025-02-07 20:34:08,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 46 states have (on average 1.173913043478261) internal successors, (54), 49 states have internal predecessors, (54), 25 states have call successors, (25), 10 states have call predecessors, (25), 10 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2025-02-07 20:34:08,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 102 transitions. [2025-02-07 20:34:08,874 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 102 transitions. Word has length 49 [2025-02-07 20:34:08,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:34:08,876 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 102 transitions. [2025-02-07 20:34:08,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-02-07 20:34:08,876 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 102 transitions. [2025-02-07 20:34:08,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-02-07 20:34:08,876 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:34:08,877 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:34:08,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-02-07 20:34:09,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2025-02-07 20:34:09,078 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:34:09,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:34:09,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1553645885, now seen corresponding path program 1 times [2025-02-07 20:34:09,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:34:09,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964625966] [2025-02-07 20:34:09,079 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:34:09,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:34:09,087 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-02-07 20:34:09,106 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-02-07 20:34:09,106 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:34:09,106 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-07 20:34:09,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1793904789] [2025-02-07 20:34:09,107 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:34:09,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:34:09,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:34:09,113 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 20:34:09,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-07 20:34:09,150 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-02-07 20:34:09,174 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-02-07 20:34:09,174 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:34:09,175 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:34:09,175 INFO L256 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-02-07 20:34:09,177 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:34:09,451 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-02-07 20:34:09,452 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 20:34:09,616 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2025-02-07 20:34:09,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:34:09,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964625966] [2025-02-07 20:34:09,616 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-07 20:34:09,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793904789] [2025-02-07 20:34:09,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793904789] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 20:34:09,617 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-07 20:34:09,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6] total 12 [2025-02-07 20:34:09,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988386997] [2025-02-07 20:34:09,617 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-07 20:34:09,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-07 20:34:09,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:34:09,618 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-07 20:34:09,619 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2025-02-07 20:34:09,619 INFO L87 Difference]: Start difference. First operand 82 states and 102 transitions. Second operand has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 9 states have internal predecessors, (24), 6 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 7 states have call predecessors, (15), 6 states have call successors, (15) [2025-02-07 20:34:09,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:34:09,950 INFO L93 Difference]: Finished difference Result 132 states and 182 transitions. [2025-02-07 20:34:09,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-07 20:34:09,950 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 9 states have internal predecessors, (24), 6 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 7 states have call predecessors, (15), 6 states have call successors, (15) Word has length 51 [2025-02-07 20:34:09,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:34:09,952 INFO L225 Difference]: With dead ends: 132 [2025-02-07 20:34:09,952 INFO L226 Difference]: Without dead ends: 130 [2025-02-07 20:34:09,953 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 88 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2025-02-07 20:34:09,953 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 48 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-07 20:34:09,954 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 225 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-07 20:34:09,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2025-02-07 20:34:09,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 108. [2025-02-07 20:34:09,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 61 states have (on average 1.2295081967213115) internal successors, (75), 64 states have internal predecessors, (75), 34 states have call successors, (34), 12 states have call predecessors, (34), 12 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2025-02-07 20:34:09,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 141 transitions. [2025-02-07 20:34:09,991 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 141 transitions. Word has length 51 [2025-02-07 20:34:09,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:34:09,992 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 141 transitions. [2025-02-07 20:34:09,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 9 states have internal predecessors, (24), 6 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 7 states have call predecessors, (15), 6 states have call successors, (15) [2025-02-07 20:34:09,993 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 141 transitions. [2025-02-07 20:34:09,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2025-02-07 20:34:09,995 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:34:09,995 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:34:10,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-02-07 20:34:10,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:34:10,196 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:34:10,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:34:10,196 INFO L85 PathProgramCache]: Analyzing trace with hash -324103079, now seen corresponding path program 2 times [2025-02-07 20:34:10,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:34:10,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653762825] [2025-02-07 20:34:10,197 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 20:34:10,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:34:10,201 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 56 statements into 2 equivalence classes. [2025-02-07 20:34:10,211 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 56 of 56 statements. [2025-02-07 20:34:10,211 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 20:34:10,211 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-07 20:34:10,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1352144371] [2025-02-07 20:34:10,212 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 20:34:10,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:34:10,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:34:10,213 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 20:34:10,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-07 20:34:10,241 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 56 statements into 2 equivalence classes. [2025-02-07 20:34:10,257 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 56 of 56 statements. [2025-02-07 20:34:10,258 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 20:34:10,258 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:34:10,258 INFO L256 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-07 20:34:10,260 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:34:10,396 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2025-02-07 20:34:10,397 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 20:34:10,465 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2025-02-07 20:34:10,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:34:10,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653762825] [2025-02-07 20:34:10,466 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-07 20:34:10,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352144371] [2025-02-07 20:34:10,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352144371] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 20:34:10,466 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-07 20:34:10,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2025-02-07 20:34:10,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362050486] [2025-02-07 20:34:10,466 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-07 20:34:10,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-07 20:34:10,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:34:10,467 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-07 20:34:10,467 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-02-07 20:34:10,467 INFO L87 Difference]: Start difference. First operand 108 states and 141 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 5 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2025-02-07 20:34:58,604 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 48.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2025-02-07 20:34:58,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:34:58,857 INFO L93 Difference]: Finished difference Result 153 states and 212 transitions. [2025-02-07 20:34:58,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-07 20:34:58,858 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 5 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 56 [2025-02-07 20:34:58,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:34:58,859 INFO L225 Difference]: With dead ends: 153 [2025-02-07 20:34:58,860 INFO L226 Difference]: Without dead ends: 134 [2025-02-07 20:34:58,860 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 102 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2025-02-07 20:34:58,860 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 14 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 23 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.3s IncrementalHoareTripleChecker+Time [2025-02-07 20:34:58,861 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 186 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 111 Invalid, 1 Unknown, 0 Unchecked, 48.3s Time] [2025-02-07 20:34:58,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2025-02-07 20:34:58,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 126. [2025-02-07 20:34:58,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 70 states have (on average 1.2571428571428571) internal successors, (88), 73 states have internal predecessors, (88), 43 states have call successors, (43), 12 states have call predecessors, (43), 12 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2025-02-07 20:34:58,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 171 transitions. [2025-02-07 20:34:58,892 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 171 transitions. Word has length 56 [2025-02-07 20:34:58,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:34:58,894 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 171 transitions. [2025-02-07 20:34:58,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 5 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2025-02-07 20:34:58,894 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 171 transitions. [2025-02-07 20:34:58,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2025-02-07 20:34:58,896 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:34:58,896 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:34:58,902 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-02-07 20:34:59,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:34:59,100 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:34:59,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:34:59,100 INFO L85 PathProgramCache]: Analyzing trace with hash 423327123, now seen corresponding path program 1 times [2025-02-07 20:34:59,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:34:59,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281822542] [2025-02-07 20:34:59,101 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:34:59,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:34:59,106 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-02-07 20:34:59,125 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-02-07 20:34:59,126 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:34:59,126 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-07 20:34:59,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [24091755] [2025-02-07 20:34:59,129 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:34:59,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:34:59,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:34:59,135 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 20:34:59,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-07 20:34:59,158 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-02-07 20:34:59,173 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-02-07 20:34:59,173 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:34:59,173 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:34:59,177 INFO L256 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-02-07 20:34:59,178 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:34:59,291 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2025-02-07 20:34:59,291 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 20:34:59,365 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2025-02-07 20:34:59,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:34:59,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281822542] [2025-02-07 20:34:59,365 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-07 20:34:59,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24091755] [2025-02-07 20:34:59,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24091755] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-07 20:34:59,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-07 20:34:59,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2025-02-07 20:34:59,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737858561] [2025-02-07 20:34:59,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 20:34:59,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-07 20:34:59,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:34:59,366 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-07 20:34:59,366 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-02-07 20:34:59,366 INFO L87 Difference]: Start difference. First operand 126 states and 171 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-02-07 20:34:59,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:34:59,436 INFO L93 Difference]: Finished difference Result 132 states and 176 transitions. [2025-02-07 20:34:59,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-07 20:34:59,437 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 64 [2025-02-07 20:34:59,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:34:59,438 INFO L225 Difference]: With dead ends: 132 [2025-02-07 20:34:59,438 INFO L226 Difference]: Without dead ends: 129 [2025-02-07 20:34:59,438 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 118 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-02-07 20:34:59,438 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 4 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 108 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 20:34:59,438 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 108 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 20:34:59,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2025-02-07 20:34:59,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 127. [2025-02-07 20:34:59,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 73 states have (on average 1.2465753424657535) internal successors, (91), 75 states have internal predecessors, (91), 40 states have call successors, (40), 13 states have call predecessors, (40), 13 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2025-02-07 20:34:59,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 169 transitions. [2025-02-07 20:34:59,465 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 169 transitions. Word has length 64 [2025-02-07 20:34:59,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:34:59,465 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 169 transitions. [2025-02-07 20:34:59,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-02-07 20:34:59,465 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 169 transitions. [2025-02-07 20:34:59,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-02-07 20:34:59,467 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:34:59,467 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:34:59,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-02-07 20:34:59,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:34:59,671 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:34:59,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:34:59,672 INFO L85 PathProgramCache]: Analyzing trace with hash 424133131, now seen corresponding path program 1 times [2025-02-07 20:34:59,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:34:59,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071586178] [2025-02-07 20:34:59,672 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:34:59,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:34:59,678 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-02-07 20:34:59,692 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-02-07 20:34:59,692 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:34:59,692 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:34:59,906 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2025-02-07 20:34:59,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:34:59,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071586178] [2025-02-07 20:34:59,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071586178] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 20:34:59,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638977276] [2025-02-07 20:34:59,907 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:34:59,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:34:59,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:34:59,909 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 20:34:59,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-07 20:34:59,931 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-02-07 20:34:59,947 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-02-07 20:34:59,947 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:34:59,947 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:34:59,948 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-07 20:34:59,949 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:34:59,987 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2025-02-07 20:34:59,987 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 20:35:00,065 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2025-02-07 20:35:00,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638977276] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 20:35:00,066 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 20:35:00,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 11 [2025-02-07 20:35:00,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087162891] [2025-02-07 20:35:00,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 20:35:00,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-07 20:35:00,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:35:00,066 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-07 20:35:00,066 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2025-02-07 20:35:00,067 INFO L87 Difference]: Start difference. First operand 127 states and 169 transitions. Second operand has 11 states, 10 states have (on average 2.4) internal successors, (24), 8 states have internal predecessors, (24), 4 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2025-02-07 20:35:00,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:35:00,162 INFO L93 Difference]: Finished difference Result 144 states and 185 transitions. [2025-02-07 20:35:00,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-07 20:35:00,162 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 8 states have internal predecessors, (24), 4 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 67 [2025-02-07 20:35:00,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:35:00,163 INFO L225 Difference]: With dead ends: 144 [2025-02-07 20:35:00,163 INFO L226 Difference]: Without dead ends: 140 [2025-02-07 20:35:00,164 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 130 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2025-02-07 20:35:00,164 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 10 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 20:35:00,164 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 119 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 20:35:00,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2025-02-07 20:35:00,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2025-02-07 20:35:00,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 83 states have (on average 1.1566265060240963) internal successors, (96), 85 states have internal predecessors, (96), 40 states have call successors, (40), 16 states have call predecessors, (40), 16 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2025-02-07 20:35:00,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 175 transitions. [2025-02-07 20:35:00,184 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 175 transitions. Word has length 67 [2025-02-07 20:35:00,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:35:00,184 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 175 transitions. [2025-02-07 20:35:00,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 8 states have internal predecessors, (24), 4 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2025-02-07 20:35:00,184 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 175 transitions. [2025-02-07 20:35:00,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2025-02-07 20:35:00,185 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:35:00,185 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:35:00,192 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-07 20:35:00,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:35:00,386 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:35:00,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:35:00,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1890318960, now seen corresponding path program 2 times [2025-02-07 20:35:00,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:35:00,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273102214] [2025-02-07 20:35:00,387 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 20:35:00,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:35:00,390 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 87 statements into 2 equivalence classes. [2025-02-07 20:35:00,416 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 87 of 87 statements. [2025-02-07 20:35:00,419 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 20:35:00,419 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-07 20:35:00,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1497231883] [2025-02-07 20:35:00,420 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 20:35:00,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:35:00,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:35:00,422 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 20:35:00,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-07 20:35:00,447 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 87 statements into 2 equivalence classes. [2025-02-07 20:35:00,465 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 87 of 87 statements. [2025-02-07 20:35:00,465 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 20:35:00,465 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:35:00,466 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 43 conjuncts are in the unsatisfiable core [2025-02-07 20:35:00,467 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:35:00,904 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 26 proven. 30 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2025-02-07 20:35:00,904 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 20:35:01,138 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 20 proven. 27 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2025-02-07 20:35:01,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:35:01,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273102214] [2025-02-07 20:35:01,139 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-07 20:35:01,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497231883] [2025-02-07 20:35:01,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497231883] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 20:35:01,139 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-07 20:35:01,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 17 [2025-02-07 20:35:01,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934236909] [2025-02-07 20:35:01,139 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-07 20:35:01,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-07 20:35:01,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:35:01,139 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-07 20:35:01,140 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2025-02-07 20:35:01,140 INFO L87 Difference]: Start difference. First operand 140 states and 175 transitions. Second operand has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 14 states have internal predecessors, (38), 10 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) [2025-02-07 20:35:02,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:35:02,031 INFO L93 Difference]: Finished difference Result 174 states and 222 transitions. [2025-02-07 20:35:02,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-07 20:35:02,032 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 14 states have internal predecessors, (38), 10 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) Word has length 87 [2025-02-07 20:35:02,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:35:02,033 INFO L225 Difference]: With dead ends: 174 [2025-02-07 20:35:02,033 INFO L226 Difference]: Without dead ends: 0 [2025-02-07 20:35:02,034 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2025-02-07 20:35:02,035 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 25 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-02-07 20:35:02,035 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 376 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-02-07 20:35:02,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-02-07 20:35:02,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-02-07 20:35:02,036 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 20:35:02,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-02-07 20:35:02,036 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 87 [2025-02-07 20:35:02,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:35:02,037 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-07 20:35:02,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 14 states have internal predecessors, (38), 10 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) [2025-02-07 20:35:02,037 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-02-07 20:35:02,037 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-02-07 20:35:02,039 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-02-07 20:35:02,046 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-02-07 20:35:02,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-02-07 20:35:02,247 INFO L422 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:35:02,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2025-02-07 20:35:05,328 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-07 20:35:05,342 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.02 08:35:05 BoogieIcfgContainer [2025-02-07 20:35:05,342 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-07 20:35:05,343 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-07 20:35:05,343 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-07 20:35:05,343 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-07 20:35:05,343 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 08:34:05" (3/4) ... [2025-02-07 20:35:05,345 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-02-07 20:35:05,349 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2025-02-07 20:35:05,349 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2025-02-07 20:35:05,351 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2025-02-07 20:35:05,351 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-02-07 20:35:05,351 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-02-07 20:35:05,352 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-02-07 20:35:05,407 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-07 20:35:05,409 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-02-07 20:35:05,409 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-07 20:35:05,410 INFO L158 Benchmark]: Toolchain (without parser) took 59888.72ms. Allocated memory was 142.6MB in the beginning and 352.3MB in the end (delta: 209.7MB). Free memory was 112.8MB in the beginning and 231.8MB in the end (delta: -119.1MB). Peak memory consumption was 84.8MB. Max. memory is 16.1GB. [2025-02-07 20:35:05,410 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 201.3MB. Free memory is still 123.1MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-07 20:35:05,410 INFO L158 Benchmark]: CACSL2BoogieTranslator took 191.28ms. Allocated memory is still 142.6MB. Free memory was 112.8MB in the beginning and 101.4MB in the end (delta: 11.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-07 20:35:05,410 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.81ms. Allocated memory is still 142.6MB. Free memory was 101.4MB in the beginning and 100.4MB in the end (delta: 994.2kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-07 20:35:05,410 INFO L158 Benchmark]: Boogie Preprocessor took 19.35ms. Allocated memory is still 142.6MB. Free memory was 100.4MB in the beginning and 99.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-07 20:35:05,410 INFO L158 Benchmark]: IcfgBuilder took 221.73ms. Allocated memory is still 142.6MB. Free memory was 99.3MB in the beginning and 87.1MB in the end (delta: 12.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-07 20:35:05,410 INFO L158 Benchmark]: TraceAbstraction took 59359.99ms. Allocated memory was 142.6MB in the beginning and 352.3MB in the end (delta: 209.7MB). Free memory was 86.6MB in the beginning and 238.3MB in the end (delta: -151.7MB). Peak memory consumption was 68.8MB. Max. memory is 16.1GB. [2025-02-07 20:35:05,410 INFO L158 Benchmark]: Witness Printer took 66.45ms. Allocated memory is still 352.3MB. Free memory was 238.3MB in the beginning and 231.8MB in the end (delta: 6.5MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-07 20:35:05,411 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 201.3MB. Free memory is still 123.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 191.28ms. Allocated memory is still 142.6MB. Free memory was 112.8MB in the beginning and 101.4MB in the end (delta: 11.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.81ms. Allocated memory is still 142.6MB. Free memory was 101.4MB in the beginning and 100.4MB in the end (delta: 994.2kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 19.35ms. Allocated memory is still 142.6MB. Free memory was 100.4MB in the beginning and 99.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 221.73ms. Allocated memory is still 142.6MB. Free memory was 99.3MB in the beginning and 87.1MB in the end (delta: 12.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 59359.99ms. Allocated memory was 142.6MB in the beginning and 352.3MB in the end (delta: 209.7MB). Free memory was 86.6MB in the beginning and 238.3MB in the end (delta: -151.7MB). Peak memory consumption was 68.8MB. Max. memory is 16.1GB. * Witness Printer took 66.45ms. Allocated memory is still 352.3MB. Free memory was 238.3MB in the beginning and 231.8MB in the end (delta: 6.5MB). 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: 13]: 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 3 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 56.2s, OverallIterations: 12, TraceHistogramMax: 11, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 50.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 165 SdHoareTripleChecker+Valid, 49.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 131 mSDsluCounter, 1795 SdHoareTripleChecker+Invalid, 49.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1398 mSDsCounter, 159 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 983 IncrementalHoareTripleChecker+Invalid, 1143 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 159 mSolverCounterUnsat, 397 mSDtfsCounter, 983 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 903 GetRequests, 804 SyntacticMatches, 8 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=140occurred in iteration=11, InterpolantAutomatonStates: 80, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 44 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 1138 NumberOfCodeBlocks, 1138 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 1040 ConstructedInterpolants, 0 QuantifiedInterpolants, 3748 SizeOfPredicates, 22 NumberOfNonLiveVariables, 1376 ConjunctsInSsa, 178 ConjunctsInUnsatCore, 20 InterpolantComputations, 8 PerfectInterpolantSequences, 1579/1697 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: 35]: Location Invariant Derived location invariant: ((((((((__int128) p * s) == (((__int128) q * r) + 1)) && (1 <= y)) && (y <= 5)) && (((((__int128) r * y) + b) + ((__int128) p * x)) == ((a + ((__int128) s * y)) + ((__int128) q * x)))) && (1 <= x)) && ((((__int128) r * y) + ((__int128) p * x)) == a)) RESULT: Ultimate proved your program to be correct! [2025-02-07 20:35:05,430 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