./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/standard_init9_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_init9_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 a2ffc42929e6643779522a313bb51bbe0e05198e9120e04b929ee1d97b6851bc --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-05 09:56:59,589 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 09:56:59,642 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-05 09:56:59,646 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 09:56:59,646 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 09:56:59,660 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 09:56:59,660 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 09:56:59,660 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 09:56:59,660 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 09:56:59,660 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 09:56:59,661 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 09:56:59,661 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 09:56:59,661 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 09:56:59,661 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 09:56:59,661 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 09:56:59,661 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 09:56:59,661 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 09:56:59,661 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 09:56:59,661 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-05 09:56:59,661 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 09:56:59,661 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 09:56:59,661 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 09:56:59,661 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 09:56:59,664 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 09:56:59,664 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 09:56:59,664 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 09:56:59,664 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 09:56:59,664 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 09:56:59,664 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 09:56:59,664 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 09:56:59,664 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 09:56:59,664 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 09:56:59,665 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 09:56:59,665 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 09:56:59,665 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 09:56:59,665 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 09:56:59,665 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 09:56:59,665 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-05 09:56:59,665 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-05 09:56:59,665 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 09:56:59,665 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 09:56:59,665 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 09:56:59,665 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 09:56:59,665 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 -> a2ffc42929e6643779522a313bb51bbe0e05198e9120e04b929ee1d97b6851bc [2025-02-05 09:56:59,900 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 09:56:59,909 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 09:56:59,912 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 09:56:59,913 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 09:56:59,913 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 09:56:59,914 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_init9_ground-1.i [2025-02-05 09:57:01,101 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e880c5d02/a9029939d5ad4875a1d336a66dd9334f/FLAGdc5575a38 [2025-02-05 09:57:01,315 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 09:57:01,315 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-examples/standard_init9_ground-1.i [2025-02-05 09:57:01,338 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e880c5d02/a9029939d5ad4875a1d336a66dd9334f/FLAGdc5575a38 [2025-02-05 09:57:01,362 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e880c5d02/a9029939d5ad4875a1d336a66dd9334f [2025-02-05 09:57:01,364 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 09:57:01,365 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 09:57:01,367 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 09:57:01,368 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 09:57:01,373 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 09:57:01,373 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 09:57:01" (1/1) ... [2025-02-05 09:57:01,374 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57cfe709 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:57:01, skipping insertion in model container [2025-02-05 09:57:01,374 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 09:57:01" (1/1) ... [2025-02-05 09:57:01,388 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 09:57:01,489 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_init9_ground-1.i[816,829] [2025-02-05 09:57:01,504 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 09:57:01,514 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 09:57:01,522 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_init9_ground-1.i[816,829] [2025-02-05 09:57:01,532 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 09:57:01,547 INFO L204 MainTranslator]: Completed translation [2025-02-05 09:57:01,547 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:57:01 WrapperNode [2025-02-05 09:57:01,547 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 09:57:01,549 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 09:57:01,549 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 09:57:01,549 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 09:57:01,553 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:57:01" (1/1) ... [2025-02-05 09:57:01,558 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:57:01" (1/1) ... [2025-02-05 09:57:01,571 INFO L138 Inliner]: procedures = 15, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 65 [2025-02-05 09:57:01,571 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 09:57:01,572 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 09:57:01,572 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 09:57:01,572 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 09:57:01,578 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:57:01" (1/1) ... [2025-02-05 09:57:01,578 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:57:01" (1/1) ... [2025-02-05 09:57:01,580 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:57:01" (1/1) ... [2025-02-05 09:57:01,592 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 9 writes are split as follows [0, 9]. [2025-02-05 09:57:01,594 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:57:01" (1/1) ... [2025-02-05 09:57:01,594 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:57:01" (1/1) ... [2025-02-05 09:57:01,598 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:57:01" (1/1) ... [2025-02-05 09:57:01,601 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:57:01" (1/1) ... [2025-02-05 09:57:01,603 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:57:01" (1/1) ... [2025-02-05 09:57:01,607 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:57:01" (1/1) ... [2025-02-05 09:57:01,608 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 09:57:01,609 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 09:57:01,609 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 09:57:01,609 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 09:57:01,610 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:57:01" (1/1) ... [2025-02-05 09:57:01,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 09:57:01,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 09:57:01,638 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 09:57:01,643 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 09:57:01,659 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 09:57:01,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-05 09:57:01,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-05 09:57:01,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-05 09:57:01,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-05 09:57:01,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-05 09:57:01,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 09:57:01,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 09:57:01,660 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-05 09:57:01,660 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-05 09:57:01,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-05 09:57:01,711 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 09:57:01,713 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 09:57:01,852 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 09:57:01,858 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2025-02-05 09:57:01,858 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 09:57:01,872 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 09:57:01,872 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 09:57:01,873 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 09:57:01 BoogieIcfgContainer [2025-02-05 09:57:01,873 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 09:57:01,874 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 09:57:01,875 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 09:57:01,878 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 09:57:01,878 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 09:57:01" (1/3) ... [2025-02-05 09:57:01,878 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a36c75a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 09:57:01, skipping insertion in model container [2025-02-05 09:57:01,879 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:57:01" (2/3) ... [2025-02-05 09:57:01,879 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a36c75a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 09:57:01, skipping insertion in model container [2025-02-05 09:57:01,879 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 09:57:01" (3/3) ... [2025-02-05 09:57:01,880 INFO L128 eAbstractionObserver]: Analyzing ICFG standard_init9_ground-1.i [2025-02-05 09:57:01,890 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 09:57:01,895 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG standard_init9_ground-1.i that has 1 procedures, 19 locations, 1 initial locations, 10 loop locations, and 1 error locations. [2025-02-05 09:57:01,933 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 09:57:01,942 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;@72b4ef1b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 09:57:01,942 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-05 09:57:01,945 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 18 states have internal predecessors, (29), 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 09:57:01,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-02-05 09:57:01,949 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 09:57:01,950 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 09:57:01,950 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 09:57:01,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 09:57:01,955 INFO L85 PathProgramCache]: Analyzing trace with hash 205416118, now seen corresponding path program 1 times [2025-02-05 09:57:01,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 09:57:01,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632582625] [2025-02-05 09:57:01,962 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 09:57:01,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 09:57:02,008 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-05 09:57:02,019 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-05 09:57:02,020 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 09:57:02,020 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:57:02,112 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 09:57:02,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 09:57:02,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632582625] [2025-02-05 09:57:02,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632582625] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 09:57:02,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 09:57:02,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-05 09:57:02,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014573611] [2025-02-05 09:57:02,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 09:57:02,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 09:57:02,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 09:57:02,132 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 09:57:02,132 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 09:57:02,134 INFO L87 Difference]: Start difference. First operand has 19 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 18 states have internal predecessors, (29), 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 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 09:57:02,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 09:57:02,220 INFO L93 Difference]: Finished difference Result 44 states and 72 transitions. [2025-02-05 09:57:02,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 09:57:02,222 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 14 [2025-02-05 09:57:02,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 09:57:02,226 INFO L225 Difference]: With dead ends: 44 [2025-02-05 09:57:02,227 INFO L226 Difference]: Without dead ends: 25 [2025-02-05 09:57:02,232 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 09:57:02,234 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 09:57:02,236 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 09:57:02,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2025-02-05 09:57:02,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2025-02-05 09:57:02,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 24 states have internal predecessors, (34), 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 09:57:02,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 34 transitions. [2025-02-05 09:57:02,261 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 34 transitions. Word has length 14 [2025-02-05 09:57:02,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 09:57:02,261 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 34 transitions. [2025-02-05 09:57:02,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 09:57:02,264 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 34 transitions. [2025-02-05 09:57:02,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-02-05 09:57:02,264 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 09:57:02,264 INFO L218 NwaCegarLoop]: trace histogram [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 09:57:02,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-05 09:57:02,265 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 09:57:02,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 09:57:02,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1487006319, now seen corresponding path program 1 times [2025-02-05 09:57:02,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 09:57:02,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014979343] [2025-02-05 09:57:02,265 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 09:57:02,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 09:57:02,289 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-05 09:57:02,296 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-05 09:57:02,296 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 09:57:02,296 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:57:02,417 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-05 09:57:02,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 09:57:02,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014979343] [2025-02-05 09:57:02,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014979343] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 09:57:02,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83233431] [2025-02-05 09:57:02,418 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 09:57:02,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:57:02,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 09:57:02,421 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 09:57:02,423 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 09:57:02,466 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-05 09:57:02,488 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-05 09:57:02,488 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 09:57:02,488 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:57:02,490 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 09:57:02,494 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 09:57:02,532 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-05 09:57:02,532 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 09:57:02,564 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-05 09:57:02,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83233431] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 09:57:02,564 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 09:57:02,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-02-05 09:57:02,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447644164] [2025-02-05 09:57:02,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 09:57:02,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-05 09:57:02,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 09:57:02,569 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-05 09:57:02,569 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-02-05 09:57:02,570 INFO L87 Difference]: Start difference. First operand 25 states and 34 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 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 09:57:02,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 09:57:02,705 INFO L93 Difference]: Finished difference Result 73 states and 117 transitions. [2025-02-05 09:57:02,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 09:57:02,706 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 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 23 [2025-02-05 09:57:02,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 09:57:02,707 INFO L225 Difference]: With dead ends: 73 [2025-02-05 09:57:02,707 INFO L226 Difference]: Without dead ends: 52 [2025-02-05 09:57:02,708 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 43 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 09:57:02,709 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 09:57:02,709 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 09:57:02,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2025-02-05 09:57:02,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2025-02-05 09:57:02,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.196078431372549) internal successors, (61), 51 states have internal predecessors, (61), 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 09:57:02,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 61 transitions. [2025-02-05 09:57:02,720 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 61 transitions. Word has length 23 [2025-02-05 09:57:02,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 09:57:02,720 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 61 transitions. [2025-02-05 09:57:02,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 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 09:57:02,720 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 61 transitions. [2025-02-05 09:57:02,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2025-02-05 09:57:02,720 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 09:57:02,720 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 09:57:02,727 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 09:57:02,921 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 09:57:02,921 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 09:57:02,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 09:57:02,922 INFO L85 PathProgramCache]: Analyzing trace with hash -378938506, now seen corresponding path program 2 times [2025-02-05 09:57:02,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 09:57:02,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633261019] [2025-02-05 09:57:02,922 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 09:57:02,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 09:57:02,949 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 50 statements into 2 equivalence classes. [2025-02-05 09:57:02,991 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 50 of 50 statements. [2025-02-05 09:57:02,991 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 09:57:02,991 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:57:03,228 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2025-02-05 09:57:03,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 09:57:03,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633261019] [2025-02-05 09:57:03,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633261019] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 09:57:03,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575988231] [2025-02-05 09:57:03,229 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 09:57:03,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:57:03,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 09:57:03,231 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 09:57:03,233 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 09:57:03,290 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 50 statements into 2 equivalence classes. [2025-02-05 09:57:03,335 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 50 of 50 statements. [2025-02-05 09:57:03,335 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 09:57:03,335 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:57:03,337 INFO L256 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-05 09:57:03,339 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 09:57:03,362 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2025-02-05 09:57:03,364 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 09:57:03,428 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2025-02-05 09:57:03,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575988231] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 09:57:03,430 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 09:57:03,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-02-05 09:57:03,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782118841] [2025-02-05 09:57:03,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 09:57:03,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-05 09:57:03,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 09:57:03,431 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-05 09:57:03,431 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-02-05 09:57:03,432 INFO L87 Difference]: Start difference. First operand 52 states and 61 transitions. Second operand has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 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 09:57:03,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 09:57:03,677 INFO L93 Difference]: Finished difference Result 151 states and 222 transitions. [2025-02-05 09:57:03,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-05 09:57:03,678 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 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 50 [2025-02-05 09:57:03,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 09:57:03,678 INFO L225 Difference]: With dead ends: 151 [2025-02-05 09:57:03,679 INFO L226 Difference]: Without dead ends: 106 [2025-02-05 09:57:03,680 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 94 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 09:57:03,681 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 09:57:03,682 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 09:57:03,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2025-02-05 09:57:03,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2025-02-05 09:57:03,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.0952380952380953) internal successors, (115), 105 states have internal predecessors, (115), 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 09:57:03,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 115 transitions. [2025-02-05 09:57:03,696 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 115 transitions. Word has length 50 [2025-02-05 09:57:03,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 09:57:03,696 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 115 transitions. [2025-02-05 09:57:03,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 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 09:57:03,696 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 115 transitions. [2025-02-05 09:57:03,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2025-02-05 09:57:03,697 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 09:57:03,701 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 09:57:03,706 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 09:57:03,901 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 09:57:03,901 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 09:57:03,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 09:57:03,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1561545066, now seen corresponding path program 3 times [2025-02-05 09:57:03,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 09:57:03,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205880532] [2025-02-05 09:57:03,902 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 09:57:03,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 09:57:03,945 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 104 statements into 6 equivalence classes. [2025-02-05 09:57:04,105 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 104 of 104 statements. [2025-02-05 09:57:04,105 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-02-05 09:57:04,105 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:57:04,493 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 440 trivial. 0 not checked. [2025-02-05 09:57:04,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 09:57:04,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205880532] [2025-02-05 09:57:04,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205880532] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 09:57:04,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899741520] [2025-02-05 09:57:04,495 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 09:57:04,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:57:04,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 09:57:04,499 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 09:57:04,501 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 09:57:04,603 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 104 statements into 6 equivalence classes. [2025-02-05 09:57:14,030 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 104 of 104 statements. [2025-02-05 09:57:14,030 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-02-05 09:57:14,030 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:57:14,044 INFO L256 TraceCheckSpWp]: Trace formula consists of 698 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-02-05 09:57:14,048 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 09:57:14,093 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 440 trivial. 0 not checked. [2025-02-05 09:57:14,093 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 09:57:14,289 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2025-02-05 09:57:14,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899741520] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 09:57:14,289 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 09:57:14,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2025-02-05 09:57:14,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038069462] [2025-02-05 09:57:14,289 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 09:57:14,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-05 09:57:14,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 09:57:14,290 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-05 09:57:14,291 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=301, Unknown=0, NotChecked=0, Total=600 [2025-02-05 09:57:14,291 INFO L87 Difference]: Start difference. First operand 106 states and 115 transitions. Second operand has 25 states, 25 states have (on average 2.08) internal successors, (52), 25 states have internal predecessors, (52), 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 09:57:14,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 09:57:14,788 INFO L93 Difference]: Finished difference Result 307 states and 432 transitions. [2025-02-05 09:57:14,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-02-05 09:57:14,788 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.08) internal successors, (52), 25 states have internal predecessors, (52), 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 104 [2025-02-05 09:57:14,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 09:57:14,790 INFO L225 Difference]: With dead ends: 307 [2025-02-05 09:57:14,790 INFO L226 Difference]: Without dead ends: 214 [2025-02-05 09:57:14,791 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=324, Invalid=326, Unknown=0, NotChecked=0, Total=650 [2025-02-05 09:57:14,791 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 669 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 669 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-05 09:57:14,792 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [669 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-05 09:57:14,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2025-02-05 09:57:14,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2025-02-05 09:57:14,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 213 states have (on average 1.0469483568075117) internal successors, (223), 213 states have internal predecessors, (223), 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 09:57:14,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 223 transitions. [2025-02-05 09:57:14,809 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 223 transitions. Word has length 104 [2025-02-05 09:57:14,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 09:57:14,810 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 223 transitions. [2025-02-05 09:57:14,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.08) internal successors, (52), 25 states have internal predecessors, (52), 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 09:57:14,810 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 223 transitions. [2025-02-05 09:57:14,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2025-02-05 09:57:14,812 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 09:57:14,812 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 09:57:14,834 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 09:57:15,013 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 09:57:15,013 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 09:57:15,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 09:57:15,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1493326634, now seen corresponding path program 4 times [2025-02-05 09:57:15,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 09:57:15,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026958422] [2025-02-05 09:57:15,014 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 09:57:15,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 09:57:15,075 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 212 statements into 2 equivalence classes. [2025-02-05 09:57:15,165 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 212 of 212 statements. [2025-02-05 09:57:15,167 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 09:57:15,167 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:57:16,360 INFO L134 CoverageAnalysis]: Checked inductivity of 2277 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2024 trivial. 0 not checked. [2025-02-05 09:57:16,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 09:57:16,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026958422] [2025-02-05 09:57:16,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026958422] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 09:57:16,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60052957] [2025-02-05 09:57:16,361 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 09:57:16,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:57:16,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 09:57:16,366 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 09:57:16,368 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 09:57:16,499 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 212 statements into 2 equivalence classes. [2025-02-05 09:57:16,620 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 212 of 212 statements. [2025-02-05 09:57:16,620 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 09:57:16,620 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:57:16,625 INFO L256 TraceCheckSpWp]: Trace formula consists of 1454 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-02-05 09:57:16,629 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 09:57:16,691 INFO L134 CoverageAnalysis]: Checked inductivity of 2277 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2024 trivial. 0 not checked. [2025-02-05 09:57:16,691 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 09:57:17,304 INFO L134 CoverageAnalysis]: Checked inductivity of 2277 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2024 trivial. 0 not checked. [2025-02-05 09:57:17,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60052957] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 09:57:17,304 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 09:57:17,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2025-02-05 09:57:17,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498156655] [2025-02-05 09:57:17,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 09:57:17,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2025-02-05 09:57:17,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 09:57:17,307 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2025-02-05 09:57:17,307 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2025-02-05 09:57:17,308 INFO L87 Difference]: Start difference. First operand 214 states and 223 transitions. Second operand has 49 states, 49 states have (on average 1.4285714285714286) internal successors, (70), 49 states have internal predecessors, (70), 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 09:57:18,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 09:57:18,450 INFO L93 Difference]: Finished difference Result 619 states and 852 transitions. [2025-02-05 09:57:18,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2025-02-05 09:57:18,450 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.4285714285714286) internal successors, (70), 49 states have internal predecessors, (70), 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 212 [2025-02-05 09:57:18,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 09:57:18,452 INFO L225 Difference]: With dead ends: 619 [2025-02-05 09:57:18,452 INFO L226 Difference]: Without dead ends: 430 [2025-02-05 09:57:18,453 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 400 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 09:57:18,454 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 1473 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 1901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1473 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-02-05 09:57:18,454 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 1901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1473 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-02-05 09:57:18,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2025-02-05 09:57:18,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 430. [2025-02-05 09:57:18,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 429 states have (on average 1.0233100233100234) internal successors, (439), 429 states have internal predecessors, (439), 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 09:57:18,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 439 transitions. [2025-02-05 09:57:18,492 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 439 transitions. Word has length 212 [2025-02-05 09:57:18,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 09:57:18,492 INFO L471 AbstractCegarLoop]: Abstraction has 430 states and 439 transitions. [2025-02-05 09:57:18,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.4285714285714286) internal successors, (70), 49 states have internal predecessors, (70), 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 09:57:18,493 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 439 transitions. [2025-02-05 09:57:18,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2025-02-05 09:57:18,496 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 09:57:18,497 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 09:57:18,506 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 09:57:18,701 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 09:57:18,701 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 09:57:18,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 09:57:18,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1467719338, now seen corresponding path program 5 times [2025-02-05 09:57:18,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 09:57:18,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025024025] [2025-02-05 09:57:18,702 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 09:57:18,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 09:57:18,783 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 428 statements into 24 equivalence classes. [2025-02-05 09:57:19,643 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) and asserted 428 of 428 statements. [2025-02-05 09:57:19,644 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2025-02-05 09:57:19,644 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:57:22,511 INFO L134 CoverageAnalysis]: Checked inductivity of 9729 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 8648 trivial. 0 not checked. [2025-02-05 09:57:22,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 09:57:22,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025024025] [2025-02-05 09:57:22,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025024025] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 09:57:22,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568055197] [2025-02-05 09:57:22,512 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 09:57:22,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:57:22,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 09:57:22,515 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 09:57:22,518 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 09:57:22,770 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 428 statements into 24 equivalence classes.