./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/standard_init6_ground-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-examples/standard_init6_ground-1.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ff138f81519ab5ff475befdf624922816837c8f1983c223aa78c0525de509876 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-05 09:55:26,483 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 09:55:26,536 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-05 09:55:26,540 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 09:55:26,540 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 09:55:26,561 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 09:55:26,563 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 09:55:26,563 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 09:55:26,564 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 09:55:26,564 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 09:55:26,564 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 09:55:26,565 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 09:55:26,565 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 09:55:26,565 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 09:55:26,565 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 09:55:26,566 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 09:55:26,566 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 09:55:26,566 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 09:55:26,566 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-05 09:55:26,566 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 09:55:26,566 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 09:55:26,566 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 09:55:26,566 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 09:55:26,566 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 09:55:26,566 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 09:55:26,566 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 09:55:26,567 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 09:55:26,567 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 09:55:26,567 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 09:55:26,567 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 09:55:26,567 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 09:55:26,567 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 09:55:26,567 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 09:55:26,568 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 09:55:26,568 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 09:55:26,568 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 09:55:26,568 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 09:55:26,568 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-05 09:55:26,568 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-05 09:55:26,568 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 09:55:26,568 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 09:55:26,568 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 09:55:26,568 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 09:55:26,568 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 -> ff138f81519ab5ff475befdf624922816837c8f1983c223aa78c0525de509876 [2025-02-05 09:55:26,796 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 09:55:26,802 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 09:55:26,806 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 09:55:26,806 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 09:55:26,807 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 09:55:26,808 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_init6_ground-1.i [2025-02-05 09:55:27,960 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9f58f4ebf/711d2c54ed9f406b8bf20aab1ef3986d/FLAG129728da2 [2025-02-05 09:55:28,226 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 09:55:28,226 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-examples/standard_init6_ground-1.i [2025-02-05 09:55:28,235 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9f58f4ebf/711d2c54ed9f406b8bf20aab1ef3986d/FLAG129728da2 [2025-02-05 09:55:28,523 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9f58f4ebf/711d2c54ed9f406b8bf20aab1ef3986d [2025-02-05 09:55:28,525 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 09:55:28,526 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 09:55:28,527 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 09:55:28,527 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 09:55:28,530 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 09:55:28,531 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 09:55:28" (1/1) ... [2025-02-05 09:55:28,531 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25b38f1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:55:28, skipping insertion in model container [2025-02-05 09:55:28,531 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 09:55:28" (1/1) ... [2025-02-05 09:55:28,541 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 09:55:28,634 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/array-examples/standard_init6_ground-1.i[816,829] [2025-02-05 09:55:28,648 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 09:55:28,653 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 09:55:28,660 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/array-examples/standard_init6_ground-1.i[816,829] [2025-02-05 09:55:28,664 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 09:55:28,672 INFO L204 MainTranslator]: Completed translation [2025-02-05 09:55:28,673 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:55:28 WrapperNode [2025-02-05 09:55:28,673 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 09:55:28,674 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 09:55:28,674 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 09:55:28,674 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 09:55:28,678 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:55:28" (1/1) ... [2025-02-05 09:55:28,682 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:55:28" (1/1) ... [2025-02-05 09:55:28,691 INFO L138 Inliner]: procedures = 15, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 53 [2025-02-05 09:55:28,691 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 09:55:28,692 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 09:55:28,692 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 09:55:28,692 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 09:55:28,696 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:55:28" (1/1) ... [2025-02-05 09:55:28,696 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:55:28" (1/1) ... [2025-02-05 09:55:28,697 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:55:28" (1/1) ... [2025-02-05 09:55:28,703 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 6 writes are split as follows [0, 6]. [2025-02-05 09:55:28,704 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:55:28" (1/1) ... [2025-02-05 09:55:28,704 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:55:28" (1/1) ... [2025-02-05 09:55:28,706 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:55:28" (1/1) ... [2025-02-05 09:55:28,707 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:55:28" (1/1) ... [2025-02-05 09:55:28,707 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:55:28" (1/1) ... [2025-02-05 09:55:28,708 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:55:28" (1/1) ... [2025-02-05 09:55:28,709 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 09:55:28,709 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 09:55:28,709 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 09:55:28,709 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 09:55:28,710 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:55:28" (1/1) ... [2025-02-05 09:55:28,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 09:55:28,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 09:55:28,737 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 09:55:28,740 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 09:55:28,758 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 09:55:28,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-05 09:55:28,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-05 09:55:28,758 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-05 09:55:28,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-05 09:55:28,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-05 09:55:28,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 09:55:28,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 09:55:28,758 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-05 09:55:28,759 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-05 09:55:28,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-05 09:55:28,806 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 09:55:28,808 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 09:55:28,897 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L15: call ULTIMATE.dealloc(main_~#a~0#1.base, main_~#a~0#1.offset);havoc main_~#a~0#1.base, main_~#a~0#1.offset; [2025-02-05 09:55:28,900 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2025-02-05 09:55:28,901 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 09:55:28,906 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 09:55:28,907 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 09:55:28,907 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 09:55:28 BoogieIcfgContainer [2025-02-05 09:55:28,907 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 09:55:28,908 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 09:55:28,908 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 09:55:28,911 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 09:55:28,912 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 09:55:28" (1/3) ... [2025-02-05 09:55:28,912 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a6640b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 09:55:28, skipping insertion in model container [2025-02-05 09:55:28,912 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:55:28" (2/3) ... [2025-02-05 09:55:28,912 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a6640b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 09:55:28, skipping insertion in model container [2025-02-05 09:55:28,912 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 09:55:28" (3/3) ... [2025-02-05 09:55:28,913 INFO L128 eAbstractionObserver]: Analyzing ICFG standard_init6_ground-1.i [2025-02-05 09:55:28,923 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 09:55:28,924 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG standard_init6_ground-1.i that has 1 procedures, 16 locations, 1 initial locations, 7 loop locations, and 1 error locations. [2025-02-05 09:55:28,955 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 09:55:28,967 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;@5651fee4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 09:55:28,967 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-05 09:55:28,970 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 15 states have internal predecessors, (23), 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 09:55:28,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-02-05 09:55:28,972 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 09:55:28,973 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 09:55:28,973 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 09:55:28,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 09:55:28,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1330604466, now seen corresponding path program 1 times [2025-02-05 09:55:28,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 09:55:28,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114380315] [2025-02-05 09:55:28,986 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 09:55:28,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 09:55:29,047 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-05 09:55:29,060 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-05 09:55:29,061 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 09:55:29,061 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:55:29,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 09:55:29,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 09:55:29,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114380315] [2025-02-05 09:55:29,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114380315] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 09:55:29,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 09:55:29,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-05 09:55:29,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472697267] [2025-02-05 09:55:29,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 09:55:29,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 09:55:29,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 09:55:29,175 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 09:55:29,175 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 09:55:29,176 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 15 states have internal predecessors, (23), 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) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 09:55:29,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 09:55:29,212 INFO L93 Difference]: Finished difference Result 35 states and 54 transitions. [2025-02-05 09:55:29,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 09:55:29,214 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) Word has length 11 [2025-02-05 09:55:29,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 09:55:29,217 INFO L225 Difference]: With dead ends: 35 [2025-02-05 09:55:29,218 INFO L226 Difference]: Without dead ends: 19 [2025-02-05 09:55:29,220 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 09:55:29,224 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 09:55:29,225 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 09:55:29,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2025-02-05 09:55:29,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2025-02-05 09:55:29,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 18 states have internal predecessors, (25), 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 09:55:29,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2025-02-05 09:55:29,251 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 25 transitions. Word has length 11 [2025-02-05 09:55:29,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 09:55:29,252 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 25 transitions. [2025-02-05 09:55:29,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 09:55:29,252 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 25 transitions. [2025-02-05 09:55:29,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-02-05 09:55:29,253 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 09:55:29,254 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 09:55:29,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-05 09:55:29,254 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 09:55:29,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 09:55:29,255 INFO L85 PathProgramCache]: Analyzing trace with hash -204654066, now seen corresponding path program 1 times [2025-02-05 09:55:29,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 09:55:29,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434223124] [2025-02-05 09:55:29,255 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 09:55:29,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 09:55:29,268 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-05 09:55:29,274 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-05 09:55:29,274 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 09:55:29,274 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:55:29,331 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-05 09:55:29,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 09:55:29,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434223124] [2025-02-05 09:55:29,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434223124] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 09:55:29,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247082259] [2025-02-05 09:55:29,332 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 09:55:29,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:55:29,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 09:55:29,334 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 09:55:29,335 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 09:55:29,373 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-05 09:55:29,389 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-05 09:55:29,389 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 09:55:29,389 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:55:29,391 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 09:55:29,393 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 09:55:29,417 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-05 09:55:29,418 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 09:55:29,444 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-05 09:55:29,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247082259] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 09:55:29,444 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 09:55:29,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-02-05 09:55:29,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194917281] [2025-02-05 09:55:29,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 09:55:29,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-05 09:55:29,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 09:55:29,446 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-05 09:55:29,446 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-02-05 09:55:29,446 INFO L87 Difference]: Start difference. First operand 19 states and 25 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 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 09:55:29,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 09:55:29,561 INFO L93 Difference]: Finished difference Result 52 states and 81 transitions. [2025-02-05 09:55:29,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 09:55:29,562 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 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) Word has length 17 [2025-02-05 09:55:29,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 09:55:29,562 INFO L225 Difference]: With dead ends: 52 [2025-02-05 09:55:29,562 INFO L226 Difference]: Without dead ends: 37 [2025-02-05 09:55:29,562 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-02-05 09:55:29,563 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 09:55:29,563 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 09:55:29,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2025-02-05 09:55:29,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2025-02-05 09:55:29,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.1944444444444444) internal successors, (43), 36 states have internal predecessors, (43), 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 09:55:29,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2025-02-05 09:55:29,571 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 17 [2025-02-05 09:55:29,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 09:55:29,571 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2025-02-05 09:55:29,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 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 09:55:29,576 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2025-02-05 09:55:29,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2025-02-05 09:55:29,576 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 09:55:29,577 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 09:55:29,589 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-05 09:55:29,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:55:29,778 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 09:55:29,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 09:55:29,779 INFO L85 PathProgramCache]: Analyzing trace with hash 2045312718, now seen corresponding path program 2 times [2025-02-05 09:55:29,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 09:55:29,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390411589] [2025-02-05 09:55:29,779 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 09:55:29,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 09:55:29,805 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 35 statements into 2 equivalence classes. [2025-02-05 09:55:29,863 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-02-05 09:55:29,863 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 09:55:29,863 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:55:30,032 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2025-02-05 09:55:30,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 09:55:30,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390411589] [2025-02-05 09:55:30,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390411589] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 09:55:30,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124987551] [2025-02-05 09:55:30,033 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 09:55:30,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:55:30,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 09:55:30,036 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 09:55:30,037 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 09:55:30,091 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 35 statements into 2 equivalence classes. [2025-02-05 09:55:30,128 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-02-05 09:55:30,128 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 09:55:30,128 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:55:30,130 INFO L256 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-05 09:55:30,131 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 09:55:30,151 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2025-02-05 09:55:30,152 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 09:55:30,209 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2025-02-05 09:55:30,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124987551] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 09:55:30,210 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 09:55:30,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-02-05 09:55:30,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184915671] [2025-02-05 09:55:30,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 09:55:30,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-05 09:55:30,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 09:55:30,211 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-05 09:55:30,211 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-02-05 09:55:30,211 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 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 09:55:30,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 09:55:30,360 INFO L93 Difference]: Finished difference Result 103 states and 150 transitions. [2025-02-05 09:55:30,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-05 09:55:30,360 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 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) Word has length 35 [2025-02-05 09:55:30,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 09:55:30,361 INFO L225 Difference]: With dead ends: 103 [2025-02-05 09:55:30,361 INFO L226 Difference]: Without dead ends: 73 [2025-02-05 09:55:30,362 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-02-05 09:55:30,362 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 09:55:30,362 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 09:55:30,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2025-02-05 09:55:30,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2025-02-05 09:55:30,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.0972222222222223) internal successors, (79), 72 states have internal predecessors, (79), 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 09:55:30,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 79 transitions. [2025-02-05 09:55:30,375 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 79 transitions. Word has length 35 [2025-02-05 09:55:30,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 09:55:30,376 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 79 transitions. [2025-02-05 09:55:30,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 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 09:55:30,376 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 79 transitions. [2025-02-05 09:55:30,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-02-05 09:55:30,377 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 09:55:30,377 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 09:55:30,389 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-05 09:55:30,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:55:30,577 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 09:55:30,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 09:55:30,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1484371058, now seen corresponding path program 3 times [2025-02-05 09:55:30,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 09:55:30,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794195854] [2025-02-05 09:55:30,578 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 09:55:30,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 09:55:30,619 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 71 statements into 6 equivalence classes. [2025-02-05 09:55:30,724 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 71 of 71 statements. [2025-02-05 09:55:30,724 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-02-05 09:55:30,724 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:55:31,059 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2025-02-05 09:55:31,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 09:55:31,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794195854] [2025-02-05 09:55:31,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794195854] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 09:55:31,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161014870] [2025-02-05 09:55:31,060 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 09:55:31,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:55:31,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 09:55:31,062 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 09:55:31,072 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 09:55:31,129 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 71 statements into 6 equivalence classes. [2025-02-05 09:55:34,910 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 71 of 71 statements. [2025-02-05 09:55:34,910 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-02-05 09:55:34,910 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:55:34,920 INFO L256 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-02-05 09:55:34,922 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 09:55:34,948 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2025-02-05 09:55:34,948 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 09:55:35,129 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2025-02-05 09:55:35,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161014870] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 09:55:35,129 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 09:55:35,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2025-02-05 09:55:35,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498868915] [2025-02-05 09:55:35,129 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 09:55:35,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-05 09:55:35,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 09:55:35,131 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-05 09:55:35,135 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-02-05 09:55:35,135 INFO L87 Difference]: Start difference. First operand 73 states and 79 transitions. Second operand has 25 states, 25 states have (on average 2.4) internal successors, (60), 25 states have internal predecessors, (60), 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 09:55:35,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 09:55:35,461 INFO L93 Difference]: Finished difference Result 205 states and 288 transitions. [2025-02-05 09:55:35,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-02-05 09:55:35,462 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.4) internal successors, (60), 25 states have internal predecessors, (60), 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) Word has length 71 [2025-02-05 09:55:35,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 09:55:35,463 INFO L225 Difference]: With dead ends: 205 [2025-02-05 09:55:35,463 INFO L226 Difference]: Without dead ends: 145 [2025-02-05 09:55:35,463 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-02-05 09:55:35,464 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-05 09:55:35,464 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 55 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [307 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-05 09:55:35,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2025-02-05 09:55:35,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2025-02-05 09:55:35,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.0486111111111112) internal successors, (151), 144 states have internal predecessors, (151), 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 09:55:35,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 151 transitions. [2025-02-05 09:55:35,475 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 151 transitions. Word has length 71 [2025-02-05 09:55:35,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 09:55:35,475 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 151 transitions. [2025-02-05 09:55:35,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.4) internal successors, (60), 25 states have internal predecessors, (60), 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 09:55:35,475 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 151 transitions. [2025-02-05 09:55:35,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2025-02-05 09:55:35,478 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 09:55:35,478 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 09:55:35,492 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-05 09:55:35,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:55:35,679 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 09:55:35,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 09:55:35,680 INFO L85 PathProgramCache]: Analyzing trace with hash 652854542, now seen corresponding path program 4 times [2025-02-05 09:55:35,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 09:55:35,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958143153] [2025-02-05 09:55:35,680 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 09:55:35,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 09:55:35,718 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 143 statements into 2 equivalence classes. [2025-02-05 09:55:35,760 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 143 of 143 statements. [2025-02-05 09:55:35,762 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 09:55:35,762 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:55:36,700 INFO L134 CoverageAnalysis]: Checked inductivity of 1518 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 1265 trivial. 0 not checked. [2025-02-05 09:55:36,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 09:55:36,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958143153] [2025-02-05 09:55:36,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958143153] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 09:55:36,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817554308] [2025-02-05 09:55:36,701 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 09:55:36,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:55:36,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 09:55:36,706 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 09:55:36,708 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 09:55:36,812 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 143 statements into 2 equivalence classes. [2025-02-05 09:55:36,905 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 143 of 143 statements. [2025-02-05 09:55:36,906 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 09:55:36,906 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:55:36,914 INFO L256 TraceCheckSpWp]: Trace formula consists of 983 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-02-05 09:55:36,918 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 09:55:36,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1518 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 1265 trivial. 0 not checked. [2025-02-05 09:55:36,981 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 09:55:37,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1518 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 1265 trivial. 0 not checked. [2025-02-05 09:55:37,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817554308] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 09:55:37,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 09:55:37,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2025-02-05 09:55:37,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726908190] [2025-02-05 09:55:37,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 09:55:37,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2025-02-05 09:55:37,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 09:55:37,594 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2025-02-05 09:55:37,595 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2025-02-05 09:55:37,595 INFO L87 Difference]: Start difference. First operand 145 states and 151 transitions. Second operand has 49 states, 49 states have (on average 1.3061224489795917) internal successors, (64), 49 states have internal predecessors, (64), 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 09:55:38,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 09:55:38,266 INFO L93 Difference]: Finished difference Result 409 states and 564 transitions. [2025-02-05 09:55:38,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2025-02-05 09:55:38,266 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.3061224489795917) internal successors, (64), 49 states have internal predecessors, (64), 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) Word has length 143 [2025-02-05 09:55:38,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 09:55:38,268 INFO L225 Difference]: With dead ends: 409 [2025-02-05 09:55:38,268 INFO L226 Difference]: Without dead ends: 289 [2025-02-05 09:55:38,269 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2025-02-05 09:55:38,270 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 1106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 1393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1106 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-05 09:55:38,270 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 1393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1106 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-05 09:55:38,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2025-02-05 09:55:38,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2025-02-05 09:55:38,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 288 states have (on average 1.0243055555555556) internal successors, (295), 288 states have internal predecessors, (295), 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 09:55:38,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 295 transitions. [2025-02-05 09:55:38,314 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 295 transitions. Word has length 143 [2025-02-05 09:55:38,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 09:55:38,315 INFO L471 AbstractCegarLoop]: Abstraction has 289 states and 295 transitions. [2025-02-05 09:55:38,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.3061224489795917) internal successors, (64), 49 states have internal predecessors, (64), 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 09:55:38,315 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 295 transitions. [2025-02-05 09:55:38,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2025-02-05 09:55:38,317 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 09:55:38,317 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 09:55:38,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-05 09:55:38,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:55:38,523 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 09:55:38,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 09:55:38,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1385445390, now seen corresponding path program 5 times [2025-02-05 09:55:38,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 09:55:38,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429861538] [2025-02-05 09:55:38,525 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 09:55:38,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 09:55:38,606 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 287 statements into 24 equivalence classes. [2025-02-05 09:55:38,919 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) and asserted 287 of 287 statements. [2025-02-05 09:55:38,919 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2025-02-05 09:55:38,920 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:55:41,378 INFO L134 CoverageAnalysis]: Checked inductivity of 6486 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 5405 trivial. 0 not checked. [2025-02-05 09:55:41,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 09:55:41,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429861538] [2025-02-05 09:55:41,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429861538] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 09:55:41,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075567260] [2025-02-05 09:55:41,379 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 09:55:41,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:55:41,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 09:55:41,382 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 09:55:41,382 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 09:55:41,572 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 287 statements into 24 equivalence classes.