./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound2.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 e89b4ab54b22145b4041cfb458aca993f2d791ac86940dcd03d48a90a5273393 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-05 15:08:06,648 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 15:08:06,690 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-05 15:08:06,693 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 15:08:06,693 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 15:08:06,706 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 15:08:06,706 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 15:08:06,706 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 15:08:06,707 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 15:08:06,707 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 15:08:06,707 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 15:08:06,707 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 15:08:06,710 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 15:08:06,711 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 15:08:06,711 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 15:08:06,711 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 15:08:06,711 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 15:08:06,711 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 15:08:06,711 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-05 15:08:06,711 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 15:08:06,711 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 15:08:06,711 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 15:08:06,711 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 15:08:06,711 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 15:08:06,711 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 15:08:06,711 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 15:08:06,711 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 15:08:06,711 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 15:08:06,711 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 15:08:06,711 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 15:08:06,711 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 15:08:06,711 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 15:08:06,711 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 15:08:06,712 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 15:08:06,712 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 15:08:06,712 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 15:08:06,712 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 15:08:06,712 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-05 15:08:06,712 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-05 15:08:06,712 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 15:08:06,712 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 15:08:06,712 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 15:08:06,712 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 15:08:06,712 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 -> e89b4ab54b22145b4041cfb458aca993f2d791ac86940dcd03d48a90a5273393 [2025-02-05 15:08:06,897 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 15:08:06,905 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 15:08:06,908 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 15:08:06,909 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 15:08:06,909 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 15:08:06,910 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound2.c [2025-02-05 15:08:08,077 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e68ddae00/e9df4236045c4ceeb861788b6b7d39e3/FLAG2affb12c3 [2025-02-05 15:08:08,337 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 15:08:08,338 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound2.c [2025-02-05 15:08:08,344 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e68ddae00/e9df4236045c4ceeb861788b6b7d39e3/FLAG2affb12c3 [2025-02-05 15:08:08,631 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e68ddae00/e9df4236045c4ceeb861788b6b7d39e3 [2025-02-05 15:08:08,633 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 15:08:08,635 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 15:08:08,636 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 15:08:08,637 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 15:08:08,639 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 15:08:08,640 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 03:08:08" (1/1) ... [2025-02-05 15:08:08,641 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6da8056b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:08:08, skipping insertion in model container [2025-02-05 15:08:08,641 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 03:08:08" (1/1) ... [2025-02-05 15:08:08,652 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 15:08:08,751 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_valuebound2.c[489,502] [2025-02-05 15:08:08,766 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 15:08:08,775 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 15:08:08,782 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_valuebound2.c[489,502] [2025-02-05 15:08:08,788 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 15:08:08,799 INFO L204 MainTranslator]: Completed translation [2025-02-05 15:08:08,800 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:08:08 WrapperNode [2025-02-05 15:08:08,800 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 15:08:08,801 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 15:08:08,801 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 15:08:08,801 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 15:08:08,806 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:08:08" (1/1) ... [2025-02-05 15:08:08,811 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:08:08" (1/1) ... [2025-02-05 15:08:08,822 INFO L138 Inliner]: procedures = 14, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 54 [2025-02-05 15:08:08,822 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 15:08:08,823 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 15:08:08,823 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 15:08:08,823 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 15:08:08,829 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:08:08" (1/1) ... [2025-02-05 15:08:08,829 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:08:08" (1/1) ... [2025-02-05 15:08:08,830 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:08:08" (1/1) ... [2025-02-05 15:08:08,840 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-02-05 15:08:08,841 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:08:08" (1/1) ... [2025-02-05 15:08:08,841 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:08:08" (1/1) ... [2025-02-05 15:08:08,843 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:08:08" (1/1) ... [2025-02-05 15:08:08,845 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:08:08" (1/1) ... [2025-02-05 15:08:08,845 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:08:08" (1/1) ... [2025-02-05 15:08:08,846 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:08:08" (1/1) ... [2025-02-05 15:08:08,849 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 15:08:08,850 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 15:08:08,850 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 15:08:08,850 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 15:08:08,850 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:08:08" (1/1) ... [2025-02-05 15:08:08,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 15:08:08,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:08:08,873 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-05 15:08:08,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-05 15:08:08,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 15:08:08,892 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-02-05 15:08:08,892 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-02-05 15:08:08,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-05 15:08:08,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 15:08:08,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 15:08:08,893 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-02-05 15:08:08,893 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-02-05 15:08:08,933 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 15:08:08,934 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 15:08:09,029 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2025-02-05 15:08:09,029 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 15:08:09,036 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 15:08:09,036 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 15:08:09,037 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 03:08:09 BoogieIcfgContainer [2025-02-05 15:08:09,037 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 15:08:09,038 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 15:08:09,038 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 15:08:09,041 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 15:08:09,041 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 03:08:08" (1/3) ... [2025-02-05 15:08:09,042 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e477627 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 03:08:09, skipping insertion in model container [2025-02-05 15:08:09,042 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:08:08" (2/3) ... [2025-02-05 15:08:09,042 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e477627 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 03:08:09, skipping insertion in model container [2025-02-05 15:08:09,042 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 03:08:09" (3/3) ... [2025-02-05 15:08:09,043 INFO L128 eAbstractionObserver]: Analyzing ICFG egcd-ll_valuebound2.c [2025-02-05 15:08:09,052 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 15:08:09,053 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG egcd-ll_valuebound2.c that has 3 procedures, 32 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-02-05 15:08:09,082 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 15:08:09,089 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;@442a60cd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 15:08:09,089 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-05 15:08:09,092 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 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) [2025-02-05 15:08:09,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-02-05 15:08:09,095 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:08:09,096 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:08:09,096 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:08:09,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:08:09,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1874562101, now seen corresponding path program 1 times [2025-02-05 15:08:09,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:08:09,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645896078] [2025-02-05 15:08:09,104 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:08:09,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:08:09,146 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-05 15:08:09,156 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-05 15:08:09,157 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:08:09,157 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:08:09,204 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-02-05 15:08:09,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:08:09,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645896078] [2025-02-05 15:08:09,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645896078] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:08:09,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610971731] [2025-02-05 15:08:09,206 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:08:09,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:08:09,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:08:09,208 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 15:08:09,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-05 15:08:09,249 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-05 15:08:09,274 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-05 15:08:09,274 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:08:09,274 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:08:09,278 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-02-05 15:08:09,281 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:08:09,290 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-02-05 15:08:09,291 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:08:09,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610971731] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:08:09,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:08:09,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-02-05 15:08:09,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187174624] [2025-02-05 15:08:09,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:08:09,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-05 15:08:09,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:08:09,310 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-05 15:08:09,310 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-05 15:08:09,312 INFO L87 Difference]: Start difference. First operand has 32 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 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 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2025-02-05 15:08:09,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:08:09,327 INFO L93 Difference]: Finished difference Result 61 states and 97 transitions. [2025-02-05 15:08:09,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-05 15:08:09,329 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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 29 [2025-02-05 15:08:09,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:08:09,333 INFO L225 Difference]: With dead ends: 61 [2025-02-05 15:08:09,333 INFO L226 Difference]: Without dead ends: 28 [2025-02-05 15:08:09,336 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-05 15:08:09,339 INFO L435 NwaCegarLoop]: 42 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, 42 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 [2025-02-05 15:08:09,340 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:08:09,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2025-02-05 15:08:09,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2025-02-05 15:08:09,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 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) [2025-02-05 15:08:09,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2025-02-05 15:08:09,368 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 29 [2025-02-05 15:08:09,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:08:09,368 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2025-02-05 15:08:09,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2025-02-05 15:08:09,368 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2025-02-05 15:08:09,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-02-05 15:08:09,370 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:08:09,370 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:08:09,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-05 15:08:09,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-02-05 15:08:09,574 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:08:09,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:08:09,575 INFO L85 PathProgramCache]: Analyzing trace with hash 934835095, now seen corresponding path program 1 times [2025-02-05 15:08:09,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:08:09,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376462741] [2025-02-05 15:08:09,576 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:08:09,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:08:09,585 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-05 15:08:09,602 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-05 15:08:09,602 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:08:09,602 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-05 15:08:09,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [260025575] [2025-02-05 15:08:09,604 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:08:09,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:08:09,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:08:09,610 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 15:08:09,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-05 15:08:09,645 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-05 15:08:09,662 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-05 15:08:09,663 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:08:09,663 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:08:09,663 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-05 15:08:09,665 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:08:09,734 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-02-05 15:08:09,734 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:08:09,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:08:09,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376462741] [2025-02-05 15:08:09,735 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-05 15:08:09,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260025575] [2025-02-05 15:08:09,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [260025575] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:08:09,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:08:09,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-05 15:08:09,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930703824] [2025-02-05 15:08:09,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:08:09,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 15:08:09,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:08:09,737 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 15:08:09,737 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-05 15:08:09,737 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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) [2025-02-05 15:08:09,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:08:09,782 INFO L93 Difference]: Finished difference Result 44 states and 61 transitions. [2025-02-05 15:08:09,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:08:09,783 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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 29 [2025-02-05 15:08:09,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:08:09,783 INFO L225 Difference]: With dead ends: 44 [2025-02-05 15:08:09,783 INFO L226 Difference]: Without dead ends: 42 [2025-02-05 15:08:09,784 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:08:09,784 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 5 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 121 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 [2025-02-05 15:08:09,784 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 121 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:08:09,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2025-02-05 15:08:09,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2025-02-05 15:08:09,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 20 states have (on average 1.25) internal successors, (25), 22 states have internal predecessors, (25), 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) [2025-02-05 15:08:09,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 58 transitions. [2025-02-05 15:08:09,791 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 58 transitions. Word has length 29 [2025-02-05 15:08:09,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:08:09,791 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 58 transitions. [2025-02-05 15:08:09,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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) [2025-02-05 15:08:09,791 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 58 transitions. [2025-02-05 15:08:09,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-02-05 15:08:09,792 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:08:09,792 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, 1] [2025-02-05 15:08:09,800 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-05 15:08:09,996 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 [2025-02-05 15:08:09,996 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:08:09,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:08:09,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1488334121, now seen corresponding path program 1 times [2025-02-05 15:08:09,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:08:09,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216768122] [2025-02-05 15:08:09,998 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:08:09,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:08:10,003 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-02-05 15:08:10,021 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-02-05 15:08:10,021 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:08:10,021 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-05 15:08:10,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [796469255] [2025-02-05 15:08:10,022 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:08:10,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:08:10,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:08:10,027 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 15:08:10,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-05 15:08:10,064 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-02-05 15:08:10,082 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-02-05 15:08:10,082 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:08:10,082 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:08:10,086 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-05 15:08:10,101 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:08:10,162 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-02-05 15:08:10,163 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:08:10,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:08:10,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216768122] [2025-02-05 15:08:10,164 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-05 15:08:10,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796469255] [2025-02-05 15:08:10,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796469255] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:08:10,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:08:10,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-05 15:08:10,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050952292] [2025-02-05 15:08:10,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:08:10,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 15:08:10,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:08:10,166 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 15:08:10,166 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-05 15:08:10,166 INFO L87 Difference]: Start difference. First operand 41 states and 58 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 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) [2025-02-05 15:08:10,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:08:10,238 INFO L93 Difference]: Finished difference Result 66 states and 98 transitions. [2025-02-05 15:08:10,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:08:10,239 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 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 34 [2025-02-05 15:08:10,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:08:10,242 INFO L225 Difference]: With dead ends: 66 [2025-02-05 15:08:10,243 INFO L226 Difference]: Without dead ends: 64 [2025-02-05 15:08:10,243 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:08:10,244 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 6 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:08:10,245 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 123 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:08:10,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2025-02-05 15:08:10,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 57. [2025-02-05 15:08:10,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 31 states have internal predecessors, (38), 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) [2025-02-05 15:08:10,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 83 transitions. [2025-02-05 15:08:10,265 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 83 transitions. Word has length 34 [2025-02-05 15:08:10,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:08:10,265 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 83 transitions. [2025-02-05 15:08:10,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 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) [2025-02-05 15:08:10,266 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 83 transitions. [2025-02-05 15:08:10,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-02-05 15:08:10,267 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:08:10,267 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, 1] [2025-02-05 15:08:10,280 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-05 15:08:10,467 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 [2025-02-05 15:08:10,468 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:08:10,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:08:10,468 INFO L85 PathProgramCache]: Analyzing trace with hash -144013545, now seen corresponding path program 1 times [2025-02-05 15:08:10,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:08:10,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184437898] [2025-02-05 15:08:10,469 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:08:10,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:08:10,480 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-02-05 15:08:10,496 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-02-05 15:08:10,500 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:08:10,500 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-05 15:08:10,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [586285556] [2025-02-05 15:08:10,501 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:08:10,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:08:10,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:08:10,505 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 15:08:10,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-05 15:08:10,531 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-02-05 15:08:10,541 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-02-05 15:08:10,542 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:08:10,542 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:08:10,542 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-05 15:08:10,544 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:08:10,596 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2025-02-05 15:08:10,596 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:08:10,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:08:10,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184437898] [2025-02-05 15:08:10,596 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-05 15:08:10,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586285556] [2025-02-05 15:08:10,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586285556] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:08:10,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:08:10,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-05 15:08:10,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091340245] [2025-02-05 15:08:10,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:08:10,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 15:08:10,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:08:10,598 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 15:08:10,598 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-05 15:08:10,598 INFO L87 Difference]: Start difference. First operand 57 states and 83 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 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) [2025-02-05 15:08:10,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:08:10,637 INFO L93 Difference]: Finished difference Result 64 states and 89 transitions. [2025-02-05 15:08:10,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:08:10,638 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 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 39 [2025-02-05 15:08:10,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:08:10,639 INFO L225 Difference]: With dead ends: 64 [2025-02-05 15:08:10,639 INFO L226 Difference]: Without dead ends: 60 [2025-02-05 15:08:10,639 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:08:10,639 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 6 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 122 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 [2025-02-05 15:08:10,640 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 122 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:08:10,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2025-02-05 15:08:10,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2025-02-05 15:08:10,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 32 states have (on average 1.28125) internal successors, (41), 34 states have internal predecessors, (41), 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) [2025-02-05 15:08:10,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 83 transitions. [2025-02-05 15:08:10,655 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 83 transitions. Word has length 39 [2025-02-05 15:08:10,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:08:10,655 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 83 transitions. [2025-02-05 15:08:10,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 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) [2025-02-05 15:08:10,655 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 83 transitions. [2025-02-05 15:08:10,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-02-05 15:08:10,656 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:08:10,656 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, 1] [2025-02-05 15:08:10,663 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-05 15:08:10,856 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 [2025-02-05 15:08:10,857 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:08:10,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:08:10,857 INFO L85 PathProgramCache]: Analyzing trace with hash -252058226, now seen corresponding path program 1 times [2025-02-05 15:08:10,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:08:10,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373960225] [2025-02-05 15:08:10,857 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:08:10,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:08:10,866 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-02-05 15:08:10,879 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-02-05 15:08:10,879 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:08:10,879 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:08:10,992 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-02-05 15:08:10,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:08:10,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373960225] [2025-02-05 15:08:10,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373960225] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:08:10,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:08:10,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-05 15:08:10,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109698721] [2025-02-05 15:08:10,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:08:10,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 15:08:10,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:08:10,993 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 15:08:10,993 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-05 15:08:10,993 INFO L87 Difference]: Start difference. First operand 60 states and 83 transitions. Second operand has 5 states, 4 states have (on average 3.75) 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), 1 states have call predecessors, (7), 1 states have call successors, (7) [2025-02-05 15:08:11,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:08:11,021 INFO L93 Difference]: Finished difference Result 66 states and 88 transitions. [2025-02-05 15:08:11,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:08:11,022 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) 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), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 45 [2025-02-05 15:08:11,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:08:11,022 INFO L225 Difference]: With dead ends: 66 [2025-02-05 15:08:11,022 INFO L226 Difference]: Without dead ends: 64 [2025-02-05 15:08:11,022 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 [2025-02-05 15:08:11,023 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 3 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 132 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 [2025-02-05 15:08:11,023 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 132 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:08:11,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2025-02-05 15:08:11,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2025-02-05 15:08:11,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 37 states have internal predecessors, (44), 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) [2025-02-05 15:08:11,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 86 transitions. [2025-02-05 15:08:11,030 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 86 transitions. Word has length 45 [2025-02-05 15:08:11,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:08:11,030 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 86 transitions. [2025-02-05 15:08:11,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) 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), 1 states have call predecessors, (7), 1 states have call successors, (7) [2025-02-05 15:08:11,030 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 86 transitions. [2025-02-05 15:08:11,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2025-02-05 15:08:11,030 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:08:11,031 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, 1] [2025-02-05 15:08:11,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-05 15:08:11,031 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:08:11,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:08:11,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1784111281, now seen corresponding path program 1 times [2025-02-05 15:08:11,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:08:11,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094955637] [2025-02-05 15:08:11,031 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:08:11,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:08:11,035 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 47 statements into 1 equivalence classes. [2025-02-05 15:08:11,043 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 47 of 47 statements. [2025-02-05 15:08:11,043 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:08:11,043 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-05 15:08:11,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [292300203] [2025-02-05 15:08:11,044 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:08:11,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:08:11,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:08:11,045 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 15:08:11,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-05 15:08:11,066 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 47 statements into 1 equivalence classes. [2025-02-05 15:08:11,078 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 47 of 47 statements. [2025-02-05 15:08:11,078 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:08:11,078 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:08:11,079 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-05 15:08:11,080 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:08:11,176 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2025-02-05 15:08:11,177 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:08:11,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:08:11,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094955637] [2025-02-05 15:08:11,177 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-05 15:08:11,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292300203] [2025-02-05 15:08:11,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292300203] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:08:11,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:08:11,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-05 15:08:11,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841392807] [2025-02-05 15:08:11,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:08:11,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 15:08:11,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:08:11,178 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 15:08:11,178 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-05 15:08:11,178 INFO L87 Difference]: Start difference. First operand 64 states and 86 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) [2025-02-05 15:08:11,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:08:11,213 INFO L93 Difference]: Finished difference Result 80 states and 104 transitions. [2025-02-05 15:08:11,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:08:11,213 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 47 [2025-02-05 15:08:11,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:08:11,214 INFO L225 Difference]: With dead ends: 80 [2025-02-05 15:08:11,214 INFO L226 Difference]: Without dead ends: 78 [2025-02-05 15:08:11,214 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:08:11,214 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 4 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 121 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 [2025-02-05 15:08:11,215 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 121 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:08:11,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2025-02-05 15:08:11,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 75. [2025-02-05 15:08:11,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 44 states have internal predecessors, (50), 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) [2025-02-05 15:08:11,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 98 transitions. [2025-02-05 15:08:11,222 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 98 transitions. Word has length 47 [2025-02-05 15:08:11,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:08:11,222 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 98 transitions. [2025-02-05 15:08:11,223 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) [2025-02-05 15:08:11,223 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 98 transitions. [2025-02-05 15:08:11,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2025-02-05 15:08:11,223 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:08:11,224 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, 1] [2025-02-05 15:08:11,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-02-05 15:08:11,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:08:11,424 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:08:11,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:08:11,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1193732526, now seen corresponding path program 1 times [2025-02-05 15:08:11,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:08:11,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293216606] [2025-02-05 15:08:11,425 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:08:11,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:08:11,429 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-02-05 15:08:11,441 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-02-05 15:08:11,441 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:08:11,441 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:08:11,621 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2025-02-05 15:08:11,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:08:11,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293216606] [2025-02-05 15:08:11,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293216606] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:08:11,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760287857] [2025-02-05 15:08:11,622 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:08:11,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:08:11,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:08:11,626 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 15:08:11,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-05 15:08:11,651 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-02-05 15:08:11,667 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-02-05 15:08:11,667 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:08:11,668 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:08:11,668 INFO L256 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-05 15:08:11,669 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:08:11,787 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2025-02-05 15:08:11,787 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:08:11,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760287857] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:08:11,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:08:11,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2025-02-05 15:08:11,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033027312] [2025-02-05 15:08:11,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:08:11,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 15:08:11,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:08:11,788 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 15:08:11,788 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2025-02-05 15:08:11,788 INFO L87 Difference]: Start difference. First operand 75 states and 98 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2025-02-05 15:08:11,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:08:11,861 INFO L93 Difference]: Finished difference Result 88 states and 110 transitions. [2025-02-05 15:08:11,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 15:08:11,861 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 50 [2025-02-05 15:08:11,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:08:11,862 INFO L225 Difference]: With dead ends: 88 [2025-02-05 15:08:11,862 INFO L226 Difference]: Without dead ends: 84 [2025-02-05 15:08:11,862 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2025-02-05 15:08:11,863 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 6 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 147 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 [2025-02-05 15:08:11,863 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 147 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:08:11,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2025-02-05 15:08:11,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2025-02-05 15:08:11,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 47 states have (on average 1.1702127659574468) internal successors, (55), 50 states have internal predecessors, (55), 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) [2025-02-05 15:08:11,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 103 transitions. [2025-02-05 15:08:11,870 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 103 transitions. Word has length 50 [2025-02-05 15:08:11,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:08:11,870 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 103 transitions. [2025-02-05 15:08:11,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2025-02-05 15:08:11,870 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 103 transitions. [2025-02-05 15:08:11,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2025-02-05 15:08:11,870 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:08:11,870 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, 1] [2025-02-05 15:08:11,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-02-05 15:08:12,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2025-02-05 15:08:12,075 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:08:12,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:08:12,075 INFO L85 PathProgramCache]: Analyzing trace with hash 910156208, now seen corresponding path program 1 times [2025-02-05 15:08:12,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:08:12,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881040568] [2025-02-05 15:08:12,075 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:08:12,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:08:12,083 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 52 statements into 1 equivalence classes. [2025-02-05 15:08:12,094 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 52 of 52 statements. [2025-02-05 15:08:12,095 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:08:12,095 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-05 15:08:12,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1743694350] [2025-02-05 15:08:12,097 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:08:12,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:08:12,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:08:12,100 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 15:08:12,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-05 15:08:12,123 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 52 statements into 1 equivalence classes. [2025-02-05 15:08:12,137 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 52 of 52 statements. [2025-02-05 15:08:12,137 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:08:12,137 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:08:12,137 INFO L256 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-02-05 15:08:12,139 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:08:12,355 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 16 proven. 13 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-02-05 15:08:12,355 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 15:08:12,587 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2025-02-05 15:08:12,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:08:12,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881040568] [2025-02-05 15:08:12,588 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-05 15:08:12,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743694350] [2025-02-05 15:08:12,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1743694350] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 15:08:12,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-05 15:08:12,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 15 [2025-02-05 15:08:12,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250725060] [2025-02-05 15:08:12,588 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-05 15:08:12,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-02-05 15:08:12,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:08:12,588 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-02-05 15:08:12,589 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2025-02-05 15:08:12,589 INFO L87 Difference]: Start difference. First operand 83 states and 103 transitions. Second operand has 15 states, 15 states have (on average 2.0) internal successors, (30), 13 states have internal predecessors, (30), 6 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2025-02-05 15:08:12,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:08:12,959 INFO L93 Difference]: Finished difference Result 119 states and 157 transitions. [2025-02-05 15:08:12,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-05 15:08:12,960 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 13 states have internal predecessors, (30), 6 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) Word has length 52 [2025-02-05 15:08:12,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:08:12,961 INFO L225 Difference]: With dead ends: 119 [2025-02-05 15:08:12,961 INFO L226 Difference]: Without dead ends: 117 [2025-02-05 15:08:12,961 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 87 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2025-02-05 15:08:12,961 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 25 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-05 15:08:12,962 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 224 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-05 15:08:12,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2025-02-05 15:08:12,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 91. [2025-02-05 15:08:12,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 53 states have (on average 1.150943396226415) internal successors, (61), 56 states have internal predecessors, (61), 25 states have call successors, (25), 12 states have call predecessors, (25), 12 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2025-02-05 15:08:12,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 109 transitions. [2025-02-05 15:08:12,979 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 109 transitions. Word has length 52 [2025-02-05 15:08:12,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:08:12,979 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 109 transitions. [2025-02-05 15:08:12,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 13 states have internal predecessors, (30), 6 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2025-02-05 15:08:12,979 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 109 transitions. [2025-02-05 15:08:12,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2025-02-05 15:08:12,980 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:08:12,980 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, 1] [2025-02-05 15:08:12,992 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-05 15:08:13,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:08:13,185 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:08:13,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:08:13,186 INFO L85 PathProgramCache]: Analyzing trace with hash 398552271, now seen corresponding path program 2 times [2025-02-05 15:08:13,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:08:13,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542110067] [2025-02-05 15:08:13,186 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 15:08:13,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:08:13,190 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 57 statements into 2 equivalence classes. [2025-02-05 15:08:13,198 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 57 of 57 statements. [2025-02-05 15:08:13,198 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 15:08:13,198 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-05 15:08:13,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [29914390] [2025-02-05 15:08:13,199 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 15:08:13,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:08:13,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:08:13,201 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 15:08:13,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-05 15:08:13,222 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 57 statements into 2 equivalence classes. [2025-02-05 15:08:13,236 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 57 of 57 statements. [2025-02-05 15:08:13,236 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 15:08:13,236 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:08:13,237 INFO L256 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-05 15:08:13,239 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:08:13,368 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2025-02-05 15:08:13,369 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 15:08:13,449 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2025-02-05 15:08:13,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:08:13,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542110067] [2025-02-05 15:08:13,449 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-05 15:08:13,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29914390] [2025-02-05 15:08:13,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29914390] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 15:08:13,450 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-05 15:08:13,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2025-02-05 15:08:13,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925701165] [2025-02-05 15:08:13,450 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-05 15:08:13,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-05 15:08:13,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:08:13,451 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-05 15:08:13,451 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-02-05 15:08:13,451 INFO L87 Difference]: Start difference. First operand 91 states and 109 transitions. Second operand has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 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) [2025-02-05 15:08:13,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:08:13,722 INFO L93 Difference]: Finished difference Result 116 states and 149 transitions. [2025-02-05 15:08:13,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-05 15:08:13,722 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 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 57 [2025-02-05 15:08:13,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:08:13,723 INFO L225 Difference]: With dead ends: 116 [2025-02-05 15:08:13,723 INFO L226 Difference]: Without dead ends: 98 [2025-02-05 15:08:13,724 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 104 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2025-02-05 15:08:13,724 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 11 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 15:08:13,724 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 210 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 15:08:13,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2025-02-05 15:08:13,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 83. [2025-02-05 15:08:13,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 50 states have (on average 1.14) internal successors, (57), 52 states have internal predecessors, (57), 21 states have call successors, (21), 11 states have call predecessors, (21), 11 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2025-02-05 15:08:13,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 97 transitions. [2025-02-05 15:08:13,745 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 97 transitions. Word has length 57 [2025-02-05 15:08:13,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:08:13,745 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 97 transitions. [2025-02-05 15:08:13,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 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) [2025-02-05 15:08:13,745 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 97 transitions. [2025-02-05 15:08:13,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-02-05 15:08:13,746 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:08:13,746 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, 1] [2025-02-05 15:08:13,753 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-02-05 15:08:13,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:08:13,951 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:08:13,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:08:13,952 INFO L85 PathProgramCache]: Analyzing trace with hash -864502232, now seen corresponding path program 1 times [2025-02-05 15:08:13,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:08:13,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509095888] [2025-02-05 15:08:13,952 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:08:13,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:08:13,960 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-02-05 15:08:13,971 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-02-05 15:08:13,972 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:08:13,972 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:08:14,118 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 16 proven. 15 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2025-02-05 15:08:14,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:08:14,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509095888] [2025-02-05 15:08:14,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509095888] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:08:14,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529989814] [2025-02-05 15:08:14,118 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:08:14,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:08:14,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:08:14,122 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 15:08:14,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-05 15:08:14,146 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-02-05 15:08:14,161 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-02-05 15:08:14,161 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:08:14,162 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:08:14,162 INFO L256 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-05 15:08:14,164 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:08:14,282 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 16 proven. 15 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2025-02-05 15:08:14,282 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 15:08:14,393 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 16 proven. 15 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2025-02-05 15:08:14,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [529989814] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 15:08:14,394 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 15:08:14,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 14 [2025-02-05 15:08:14,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803294316] [2025-02-05 15:08:14,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 15:08:14,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-05 15:08:14,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:08:14,395 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-05 15:08:14,395 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2025-02-05 15:08:14,395 INFO L87 Difference]: Start difference. First operand 83 states and 97 transitions. Second operand has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 9 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 7 states have call predecessors, (23), 8 states have call successors, (23) [2025-02-05 15:08:14,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:08:14,531 INFO L93 Difference]: Finished difference Result 110 states and 127 transitions. [2025-02-05 15:08:14,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-05 15:08:14,532 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 9 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 7 states have call predecessors, (23), 8 states have call successors, (23) Word has length 65 [2025-02-05 15:08:14,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:08:14,534 INFO L225 Difference]: With dead ends: 110 [2025-02-05 15:08:14,535 INFO L226 Difference]: Without dead ends: 83 [2025-02-05 15:08:14,535 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 122 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2025-02-05 15:08:14,535 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 9 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:08:14,535 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 206 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:08:14,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2025-02-05 15:08:14,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2025-02-05 15:08:14,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 50 states have (on average 1.1) internal successors, (55), 52 states have internal predecessors, (55), 21 states have call successors, (21), 11 states have call predecessors, (21), 11 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2025-02-05 15:08:14,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 95 transitions. [2025-02-05 15:08:14,561 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 95 transitions. Word has length 65 [2025-02-05 15:08:14,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:08:14,562 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 95 transitions. [2025-02-05 15:08:14,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 9 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 7 states have call predecessors, (23), 8 states have call successors, (23) [2025-02-05 15:08:14,563 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 95 transitions. [2025-02-05 15:08:14,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-02-05 15:08:14,564 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:08:14,564 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, 1] [2025-02-05 15:08:14,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-02-05 15:08:14,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:08:14,770 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:08:14,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:08:14,771 INFO L85 PathProgramCache]: Analyzing trace with hash -960138136, now seen corresponding path program 2 times [2025-02-05 15:08:14,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:08:14,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507473228] [2025-02-05 15:08:14,771 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 15:08:14,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:08:14,777 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 65 statements into 2 equivalence classes. [2025-02-05 15:08:14,802 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 65 of 65 statements. [2025-02-05 15:08:14,806 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 15:08:14,806 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:08:15,124 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 16 proven. 18 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2025-02-05 15:08:15,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:08:15,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507473228] [2025-02-05 15:08:15,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507473228] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:08:15,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101399435] [2025-02-05 15:08:15,124 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 15:08:15,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:08:15,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:08:15,126 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 15:08:15,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-05 15:08:15,150 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 65 statements into 2 equivalence classes. [2025-02-05 15:08:15,164 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 65 of 65 statements. [2025-02-05 15:08:15,164 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 15:08:15,164 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:08:15,165 INFO L256 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-05 15:08:15,166 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:08:15,235 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 19 proven. 12 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2025-02-05 15:08:15,236 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 15:08:15,340 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 19 proven. 12 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2025-02-05 15:08:15,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101399435] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 15:08:15,340 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 15:08:15,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 19 [2025-02-05 15:08:15,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973648656] [2025-02-05 15:08:15,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 15:08:15,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-05 15:08:15,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:08:15,341 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-05 15:08:15,341 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2025-02-05 15:08:15,341 INFO L87 Difference]: Start difference. First operand 83 states and 95 transitions. Second operand has 19 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 15 states have internal predecessors, (39), 11 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (26), 11 states have call predecessors, (26), 10 states have call successors, (26) [2025-02-05 15:08:15,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:08:15,551 INFO L93 Difference]: Finished difference Result 101 states and 109 transitions. [2025-02-05 15:08:15,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-05 15:08:15,551 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 15 states have internal predecessors, (39), 11 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (26), 11 states have call predecessors, (26), 10 states have call successors, (26) Word has length 65 [2025-02-05 15:08:15,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:08:15,552 INFO L225 Difference]: With dead ends: 101 [2025-02-05 15:08:15,552 INFO L226 Difference]: Without dead ends: 58 [2025-02-05 15:08:15,552 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=119, Invalid=481, Unknown=0, NotChecked=0, Total=600 [2025-02-05 15:08:15,553 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 32 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:08:15,553 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 249 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:08:15,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2025-02-05 15:08:15,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2025-02-05 15:08:15,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 36 states have (on average 1.0277777777777777) internal successors, (37), 36 states have internal predecessors, (37), 12 states have call successors, (12), 9 states have call predecessors, (12), 8 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2025-02-05 15:08:15,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 60 transitions. [2025-02-05 15:08:15,562 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 60 transitions. Word has length 65 [2025-02-05 15:08:15,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:08:15,563 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 60 transitions. [2025-02-05 15:08:15,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 15 states have internal predecessors, (39), 11 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (26), 11 states have call predecessors, (26), 10 states have call successors, (26) [2025-02-05 15:08:15,563 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 60 transitions. [2025-02-05 15:08:15,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-02-05 15:08:15,563 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:08:15,564 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, 1] [2025-02-05 15:08:15,570 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-05 15:08:15,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:08:15,768 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:08:15,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:08:15,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1578032345, now seen corresponding path program 1 times [2025-02-05 15:08:15,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:08:15,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172042052] [2025-02-05 15:08:15,769 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:08:15,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:08:15,772 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-02-05 15:08:15,786 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-02-05 15:08:15,786 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:08:15,786 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:08:15,906 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2025-02-05 15:08:15,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:08:15,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172042052] [2025-02-05 15:08:15,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172042052] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:08:15,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471089267] [2025-02-05 15:08:15,906 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:08:15,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:08:15,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:08:15,908 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 15:08:15,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-05 15:08:15,930 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-02-05 15:08:15,942 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-02-05 15:08:15,942 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:08:15,942 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:08:15,943 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-05 15:08:15,944 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:08:15,980 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2025-02-05 15:08:15,980 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 15:08:16,045 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2025-02-05 15:08:16,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471089267] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 15:08:16,045 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 15:08:16,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 11 [2025-02-05 15:08:16,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065841430] [2025-02-05 15:08:16,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 15:08:16,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-05 15:08:16,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:08:16,046 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-05 15:08:16,046 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2025-02-05 15:08:16,046 INFO L87 Difference]: Start difference. First operand 57 states and 60 transitions. Second operand has 11 states, 10 states have (on average 2.5) internal successors, (25), 8 states have internal predecessors, (25), 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) [2025-02-05 15:08:16,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:08:16,106 INFO L93 Difference]: Finished difference Result 57 states and 60 transitions. [2025-02-05 15:08:16,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-05 15:08:16,107 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.5) internal successors, (25), 8 states have internal predecessors, (25), 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 68 [2025-02-05 15:08:16,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:08:16,107 INFO L225 Difference]: With dead ends: 57 [2025-02-05 15:08:16,107 INFO L226 Difference]: Without dead ends: 0 [2025-02-05 15:08:16,107 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 132 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2025-02-05 15:08:16,108 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 6 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:08:16,108 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 141 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:08:16,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-02-05 15:08:16,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-02-05 15:08:16,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 15:08:16,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-02-05 15:08:16,108 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 68 [2025-02-05 15:08:16,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:08:16,108 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-05 15:08:16,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.5) internal successors, (25), 8 states have internal predecessors, (25), 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) [2025-02-05 15:08:16,108 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-02-05 15:08:16,108 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-02-05 15:08:16,110 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-02-05 15:08:16,120 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-05 15:08:16,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-02-05 15:08:16,318 INFO L422 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:08:16,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2025-02-05 15:08:17,534 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-05 15:08:17,547 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.02 03:08:17 BoogieIcfgContainer [2025-02-05 15:08:17,550 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-05 15:08:17,551 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-05 15:08:17,551 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-05 15:08:17,551 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-05 15:08:17,551 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 03:08:09" (3/4) ... [2025-02-05 15:08:17,552 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-02-05 15:08:17,559 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2025-02-05 15:08:17,559 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2025-02-05 15:08:17,563 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2025-02-05 15:08:17,563 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-02-05 15:08:17,563 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-02-05 15:08:17,563 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-02-05 15:08:17,617 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-05 15:08:17,617 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-02-05 15:08:17,617 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-05 15:08:17,617 INFO L158 Benchmark]: Toolchain (without parser) took 8982.58ms. Allocated memory was 142.6MB in the beginning and 310.4MB in the end (delta: 167.8MB). Free memory was 106.5MB in the beginning and 202.8MB in the end (delta: -96.3MB). Peak memory consumption was 72.2MB. Max. memory is 16.1GB. [2025-02-05 15:08:17,618 INFO L158 Benchmark]: CDTParser took 1.08ms. Allocated memory is still 201.3MB. Free memory is still 126.9MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-05 15:08:17,618 INFO L158 Benchmark]: CACSL2BoogieTranslator took 164.44ms. Allocated memory is still 142.6MB. Free memory was 106.5MB in the beginning and 95.0MB in the end (delta: 11.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-05 15:08:17,618 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.29ms. Allocated memory is still 142.6MB. Free memory was 95.0MB in the beginning and 94.1MB in the end (delta: 896.1kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-05 15:08:17,618 INFO L158 Benchmark]: Boogie Preprocessor took 26.62ms. Allocated memory is still 142.6MB. Free memory was 94.1MB in the beginning and 92.9MB in the end (delta: 1.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-05 15:08:17,618 INFO L158 Benchmark]: IcfgBuilder took 187.05ms. Allocated memory is still 142.6MB. Free memory was 92.9MB in the beginning and 80.9MB in the end (delta: 12.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-05 15:08:17,618 INFO L158 Benchmark]: TraceAbstraction took 8512.34ms. Allocated memory was 142.6MB in the beginning and 310.4MB in the end (delta: 167.8MB). Free memory was 80.0MB in the beginning and 207.6MB in the end (delta: -127.6MB). Peak memory consumption was 148.5MB. Max. memory is 16.1GB. [2025-02-05 15:08:17,618 INFO L158 Benchmark]: Witness Printer took 66.20ms. Allocated memory is still 310.4MB. Free memory was 207.6MB in the beginning and 202.8MB in the end (delta: 4.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-05 15:08:17,619 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.08ms. Allocated memory is still 201.3MB. Free memory is still 126.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 164.44ms. Allocated memory is still 142.6MB. Free memory was 106.5MB in the beginning and 95.0MB in the end (delta: 11.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.29ms. Allocated memory is still 142.6MB. Free memory was 95.0MB in the beginning and 94.1MB in the end (delta: 896.1kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 26.62ms. Allocated memory is still 142.6MB. Free memory was 94.1MB in the beginning and 92.9MB in the end (delta: 1.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 187.05ms. Allocated memory is still 142.6MB. Free memory was 92.9MB in the beginning and 80.9MB in the end (delta: 12.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 8512.34ms. Allocated memory was 142.6MB in the beginning and 310.4MB in the end (delta: 167.8MB). Free memory was 80.0MB in the beginning and 207.6MB in the end (delta: -127.6MB). Peak memory consumption was 148.5MB. Max. memory is 16.1GB. * Witness Printer took 66.20ms. Allocated memory is still 310.4MB. Free memory was 207.6MB in the beginning and 202.8MB in the end (delta: 4.8MB). Peak memory consumption was 8.4MB. 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, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 7.2s, OverallIterations: 12, TraceHistogramMax: 8, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 138 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 113 mSDsluCounter, 1838 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1444 mSDsCounter, 126 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 882 IncrementalHoareTripleChecker+Invalid, 1008 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 126 mSolverCounterUnsat, 394 mSDtfsCounter, 882 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 899 GetRequests, 783 SyntacticMatches, 10 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=91occurred in iteration=8, InterpolantAutomatonStates: 82, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 54 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 1115 NumberOfCodeBlocks, 1115 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 1142 ConstructedInterpolants, 0 QuantifiedInterpolants, 3171 SizeOfPredicates, 22 NumberOfNonLiveVariables, 1331 ConjunctsInSsa, 136 ConjunctsInUnsatCore, 22 InterpolantComputations, 7 PerfectInterpolantSequences, 1464/1619 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: ((((((((((((0 <= x) && (p == 1)) && (1 <= y)) && (b == y)) && (b <= 2)) && (r == 0)) && (q == 0)) && (a == x)) && (x <= 2)) && (s == 1)) || (((((((((((0 <= x) && (p == 1)) && (y <= 2)) && (1 <= y)) && (a <= 1)) && (((((__int128) r * y) + b) + ((__int128) p * x)) == ((a + ((__int128) s * y)) + ((__int128) q * x)))) && (1 <= b)) && (r == 0)) && ((y != 1) || (a != 1))) && (a == x)) && (s == 1))) || (((((((((((0 <= x) && (p == 1)) && (1 <= y)) && (b <= 1)) && (a < 3)) && (((((__int128) r * y) + b) + ((__int128) p * x)) == ((a + ((__int128) s * y)) + ((__int128) q * x)))) && ((((__int128) r * y) + x) == a)) && (q == 0)) && (1 <= a)) && (x <= 2)) && (s == 1))) RESULT: Ultimate proved your program to be correct! [2025-02-05 15:08:17,634 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE