./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/sorting_bubblesort_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/sorting_bubblesort_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 68585835b92043bfb2f3c62590e96ff685993869f8a251aecd9fe4c8aaea0e1e --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-05 09:49:45,097 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 09:49:45,156 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-05 09:49:45,167 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 09:49:45,167 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 09:49:45,189 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 09:49:45,190 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 09:49:45,190 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 09:49:45,191 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 09:49:45,191 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 09:49:45,192 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 09:49:45,192 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 09:49:45,192 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 09:49:45,192 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 09:49:45,192 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 09:49:45,193 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 09:49:45,193 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 09:49:45,193 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 09:49:45,193 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-05 09:49:45,193 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 09:49:45,193 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 09:49:45,193 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 09:49:45,193 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 09:49:45,194 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 09:49:45,194 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 09:49:45,194 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 09:49:45,194 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 09:49:45,194 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 09:49:45,194 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 09:49:45,194 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 09:49:45,194 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 09:49:45,194 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 09:49:45,195 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 09:49:45,195 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 09:49:45,195 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 09:49:45,195 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 09:49:45,195 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 09:49:45,195 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-05 09:49:45,195 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-05 09:49:45,195 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 09:49:45,195 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 09:49:45,195 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 09:49:45,195 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 09:49:45,195 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 -> 68585835b92043bfb2f3c62590e96ff685993869f8a251aecd9fe4c8aaea0e1e [2025-02-05 09:49:45,415 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 09:49:45,429 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 09:49:45,431 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 09:49:45,432 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 09:49:45,432 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 09:49:45,437 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/sorting_bubblesort_ground-1.i [2025-02-05 09:49:46,601 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/91ee26f90/37b3ef9afc3e421cb70de71bc34792ba/FLAG02841abcd [2025-02-05 09:49:46,818 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 09:49:46,818 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-examples/sorting_bubblesort_ground-1.i [2025-02-05 09:49:46,823 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/91ee26f90/37b3ef9afc3e421cb70de71bc34792ba/FLAG02841abcd [2025-02-05 09:49:46,833 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/91ee26f90/37b3ef9afc3e421cb70de71bc34792ba [2025-02-05 09:49:46,834 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 09:49:46,835 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 09:49:46,836 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 09:49:46,836 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 09:49:46,839 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 09:49:46,839 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 09:49:46" (1/1) ... [2025-02-05 09:49:46,840 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59ade09f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:49:46, skipping insertion in model container [2025-02-05 09:49:46,840 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 09:49:46" (1/1) ... [2025-02-05 09:49:46,857 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 09:49:47,037 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/sorting_bubblesort_ground-1.i[820,833] [2025-02-05 09:49:47,061 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 09:49:47,075 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 09:49:47,090 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/sorting_bubblesort_ground-1.i[820,833] [2025-02-05 09:49:47,101 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 09:49:47,118 INFO L204 MainTranslator]: Completed translation [2025-02-05 09:49:47,119 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:49:47 WrapperNode [2025-02-05 09:49:47,119 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 09:49:47,120 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 09:49:47,120 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 09:49:47,120 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 09:49:47,128 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:49:47" (1/1) ... [2025-02-05 09:49:47,136 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:49:47" (1/1) ... [2025-02-05 09:49:47,145 INFO L138 Inliner]: procedures = 16, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 70 [2025-02-05 09:49:47,146 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 09:49:47,146 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 09:49:47,146 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 09:49:47,146 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 09:49:47,150 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:49:47" (1/1) ... [2025-02-05 09:49:47,151 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:49:47" (1/1) ... [2025-02-05 09:49:47,152 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:49:47" (1/1) ... [2025-02-05 09:49:47,158 INFO L175 MemorySlicer]: Split 11 memory accesses to 2 slices as follows [2, 9]. 82 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2025-02-05 09:49:47,158 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:49:47" (1/1) ... [2025-02-05 09:49:47,158 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:49:47" (1/1) ... [2025-02-05 09:49:47,160 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:49:47" (1/1) ... [2025-02-05 09:49:47,161 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:49:47" (1/1) ... [2025-02-05 09:49:47,161 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:49:47" (1/1) ... [2025-02-05 09:49:47,162 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:49:47" (1/1) ... [2025-02-05 09:49:47,163 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 09:49:47,163 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 09:49:47,163 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 09:49:47,163 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 09:49:47,164 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:49:47" (1/1) ... [2025-02-05 09:49:47,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 09:49:47,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 09:49:47,193 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 09:49:47,201 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 09:49:47,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 09:49:47,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-05 09:49:47,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-05 09:49:47,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-05 09:49:47,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-05 09:49:47,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-05 09:49:47,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 09:49:47,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 09:49:47,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-05 09:49:47,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-05 09:49:47,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-05 09:49:47,279 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 09:49:47,281 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 09:49:47,403 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L17: 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 09:49:47,409 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2025-02-05 09:49:47,412 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 09:49:47,418 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 09:49:47,418 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 09:49:47,418 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 09:49:47 BoogieIcfgContainer [2025-02-05 09:49:47,418 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 09:49:47,420 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 09:49:47,421 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 09:49:47,424 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 09:49:47,424 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 09:49:46" (1/3) ... [2025-02-05 09:49:47,425 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7141cfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 09:49:47, skipping insertion in model container [2025-02-05 09:49:47,425 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:49:47" (2/3) ... [2025-02-05 09:49:47,426 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7141cfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 09:49:47, skipping insertion in model container [2025-02-05 09:49:47,426 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 09:49:47" (3/3) ... [2025-02-05 09:49:47,427 INFO L128 eAbstractionObserver]: Analyzing ICFG sorting_bubblesort_ground-1.i [2025-02-05 09:49:47,437 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 09:49:47,438 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG sorting_bubblesort_ground-1.i that has 1 procedures, 16 locations, 1 initial locations, 5 loop locations, and 1 error locations. [2025-02-05 09:49:47,471 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 09:49:47,478 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;@106032a5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 09:49:47,479 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-05 09:49:47,481 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 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 09:49:47,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-02-05 09:49:47,484 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 09:49:47,484 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 09:49:47,485 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 09:49:47,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 09:49:47,488 INFO L85 PathProgramCache]: Analyzing trace with hash -107250953, now seen corresponding path program 1 times [2025-02-05 09:49:47,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 09:49:47,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999181686] [2025-02-05 09:49:47,494 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 09:49:47,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 09:49:47,536 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-05 09:49:47,545 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-05 09:49:47,546 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 09:49:47,546 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:49:47,599 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 09:49:47,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 09:49:47,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999181686] [2025-02-05 09:49:47,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999181686] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 09:49:47,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 09:49:47,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-05 09:49:47,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692268063] [2025-02-05 09:49:47,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 09:49:47,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 09:49:47,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 09:49:47,616 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 09:49:47,617 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 09:49:47,618 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 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) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 09:49:47,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 09:49:47,631 INFO L93 Difference]: Finished difference Result 30 states and 42 transitions. [2025-02-05 09:49:47,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 09:49:47,633 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2025-02-05 09:49:47,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 09:49:47,637 INFO L225 Difference]: With dead ends: 30 [2025-02-05 09:49:47,637 INFO L226 Difference]: Without dead ends: 14 [2025-02-05 09:49:47,638 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 09:49:47,640 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 09:49:47,640 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 09:49:47,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2025-02-05 09:49:47,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2025-02-05 09:49:47,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 13 states have internal predecessors, (19), 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 09:49:47,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 19 transitions. [2025-02-05 09:49:47,659 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 19 transitions. Word has length 8 [2025-02-05 09:49:47,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 09:49:47,659 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 19 transitions. [2025-02-05 09:49:47,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 09:49:47,659 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 19 transitions. [2025-02-05 09:49:47,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-02-05 09:49:47,659 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 09:49:47,660 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 09:49:47,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-05 09:49:47,660 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 09:49:47,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 09:49:47,660 INFO L85 PathProgramCache]: Analyzing trace with hash 2059050763, now seen corresponding path program 1 times [2025-02-05 09:49:47,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 09:49:47,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960110657] [2025-02-05 09:49:47,660 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 09:49:47,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 09:49:47,668 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-05 09:49:47,675 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-05 09:49:47,675 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 09:49:47,675 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:49:47,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 09:49:47,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 09:49:47,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960110657] [2025-02-05 09:49:47,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960110657] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 09:49:47,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784529175] [2025-02-05 09:49:47,727 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 09:49:47,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:49:47,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 09:49:47,729 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 09:49:47,730 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 09:49:47,763 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-05 09:49:47,774 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-05 09:49:47,774 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 09:49:47,774 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:49:47,776 INFO L256 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-05 09:49:47,778 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 09:49:47,790 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-05 09:49:47,790 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 09:49:47,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784529175] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 09:49:47,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 09:49:47,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-02-05 09:49:47,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21509188] [2025-02-05 09:49:47,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 09:49:47,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 09:49:47,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 09:49:47,791 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 09:49:47,792 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-05 09:49:47,792 INFO L87 Difference]: Start difference. First operand 14 states and 19 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 09:49:47,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 09:49:47,805 INFO L93 Difference]: Finished difference Result 24 states and 33 transitions. [2025-02-05 09:49:47,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 09:49:47,806 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2025-02-05 09:49:47,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 09:49:47,806 INFO L225 Difference]: With dead ends: 24 [2025-02-05 09:49:47,806 INFO L226 Difference]: Without dead ends: 18 [2025-02-05 09:49:47,806 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-05 09:49:47,807 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 4 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 09:49:47,807 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 35 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 09:49:47,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2025-02-05 09:49:47,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2025-02-05 09:49:47,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 17 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 09:49:47,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 25 transitions. [2025-02-05 09:49:47,813 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 25 transitions. Word has length 9 [2025-02-05 09:49:47,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 09:49:47,813 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 25 transitions. [2025-02-05 09:49:47,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 09:49:47,816 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 25 transitions. [2025-02-05 09:49:47,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-02-05 09:49:47,816 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 09:49:47,816 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 09:49:47,828 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 09:49:48,016 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 09:49:48,017 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 09:49:48,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 09:49:48,018 INFO L85 PathProgramCache]: Analyzing trace with hash -142887568, now seen corresponding path program 1 times [2025-02-05 09:49:48,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 09:49:48,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470825912] [2025-02-05 09:49:48,018 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 09:49:48,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 09:49:48,025 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-05 09:49:48,030 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-05 09:49:48,030 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 09:49:48,030 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:49:48,071 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-05 09:49:48,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 09:49:48,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470825912] [2025-02-05 09:49:48,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470825912] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 09:49:48,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207992004] [2025-02-05 09:49:48,072 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 09:49:48,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:49:48,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 09:49:48,075 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 09:49:48,076 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 09:49:48,119 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-05 09:49:48,133 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-05 09:49:48,133 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 09:49:48,134 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:49:48,134 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-05 09:49:48,135 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 09:49:48,148 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-05 09:49:48,148 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 09:49:48,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [207992004] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 09:49:48,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 09:49:48,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-02-05 09:49:48,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912194054] [2025-02-05 09:49:48,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 09:49:48,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 09:49:48,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 09:49:48,149 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 09:49:48,149 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-05 09:49:48,149 INFO L87 Difference]: Start difference. First operand 18 states and 25 transitions. 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 09:49:48,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 09:49:48,162 INFO L93 Difference]: Finished difference Result 36 states and 51 transitions. [2025-02-05 09:49:48,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 09:49:48,164 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 09:49:48,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 09:49:48,164 INFO L225 Difference]: With dead ends: 36 [2025-02-05 09:49:48,164 INFO L226 Difference]: Without dead ends: 22 [2025-02-05 09:49:48,165 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-05 09:49:48,165 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 3 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 09:49:48,165 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 27 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 09:49:48,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2025-02-05 09:49:48,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 19. [2025-02-05 09:49:48,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 18 states have internal predecessors, (26), 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 09:49:48,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 26 transitions. [2025-02-05 09:49:48,170 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 26 transitions. Word has length 11 [2025-02-05 09:49:48,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 09:49:48,170 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 26 transitions. [2025-02-05 09:49:48,170 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 09:49:48,170 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 26 transitions. [2025-02-05 09:49:48,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-02-05 09:49:48,170 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 09:49:48,170 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 09:49:48,176 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 09:49:48,375 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 09:49:48,376 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 09:49:48,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 09:49:48,377 INFO L85 PathProgramCache]: Analyzing trace with hash 2042697145, now seen corresponding path program 1 times [2025-02-05 09:49:48,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 09:49:48,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544900057] [2025-02-05 09:49:48,378 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 09:49:48,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 09:49:48,386 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-05 09:49:48,390 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-05 09:49:48,390 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 09:49:48,390 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:49:48,447 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-05 09:49:48,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 09:49:48,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544900057] [2025-02-05 09:49:48,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544900057] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 09:49:48,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865859561] [2025-02-05 09:49:48,451 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 09:49:48,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:49:48,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 09:49:48,452 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 09:49:48,454 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 09:49:48,480 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-05 09:49:48,490 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-05 09:49:48,491 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 09:49:48,491 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:49:48,491 INFO L256 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 09:49:48,492 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 09:49:48,509 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-05 09:49:48,510 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 09:49:48,523 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-05 09:49:48,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865859561] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 09:49:48,523 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 09:49:48,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-02-05 09:49:48,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879249704] [2025-02-05 09:49:48,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 09:49:48,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-05 09:49:48,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 09:49:48,524 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-05 09:49:48,524 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-02-05 09:49:48,524 INFO L87 Difference]: Start difference. First operand 19 states and 26 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 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 09:49:48,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 09:49:48,535 INFO L93 Difference]: Finished difference Result 37 states and 53 transitions. [2025-02-05 09:49:48,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 09:49:48,535 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 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 09:49:48,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 09:49:48,536 INFO L225 Difference]: With dead ends: 37 [2025-02-05 09:49:48,536 INFO L226 Difference]: Without dead ends: 22 [2025-02-05 09:49:48,536 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 25 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 09:49:48,536 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 09:49:48,537 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 47 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 09:49:48,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2025-02-05 09:49:48,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2025-02-05 09:49:48,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.380952380952381) internal successors, (29), 21 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 09:49:48,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 29 transitions. [2025-02-05 09:49:48,539 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 29 transitions. Word has length 14 [2025-02-05 09:49:48,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 09:49:48,539 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 29 transitions. [2025-02-05 09:49:48,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 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 09:49:48,539 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 29 transitions. [2025-02-05 09:49:48,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-02-05 09:49:48,539 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 09:49:48,540 INFO L218 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 09:49:48,545 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-05 09:49:48,740 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 09:49:48,741 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 09:49:48,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 09:49:48,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1494382515, now seen corresponding path program 2 times [2025-02-05 09:49:48,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 09:49:48,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259113249] [2025-02-05 09:49:48,741 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 09:49:48,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 09:49:48,749 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-02-05 09:49:48,761 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-02-05 09:49:48,761 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 09:49:48,761 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:49:48,806 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-02-05 09:49:48,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 09:49:48,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259113249] [2025-02-05 09:49:48,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259113249] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 09:49:48,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910067403] [2025-02-05 09:49:48,807 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 09:49:48,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:49:48,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 09:49:48,813 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 09:49:48,813 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 09:49:48,843 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-02-05 09:49:48,856 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-02-05 09:49:48,856 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 09:49:48,856 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:49:48,856 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-05 09:49:48,857 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 09:49:48,889 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-05 09:49:48,889 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 09:49:48,943 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-05 09:49:48,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910067403] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 09:49:48,944 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 09:49:48,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2025-02-05 09:49:48,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731544478] [2025-02-05 09:49:48,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 09:49:48,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-05 09:49:48,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 09:49:48,945 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-05 09:49:48,945 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2025-02-05 09:49:48,945 INFO L87 Difference]: Start difference. First operand 22 states and 29 transitions. Second operand has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 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 09:49:48,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 09:49:48,973 INFO L93 Difference]: Finished difference Result 52 states and 76 transitions. [2025-02-05 09:49:48,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-05 09:49:48,973 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 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 09:49:48,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 09:49:48,974 INFO L225 Difference]: With dead ends: 52 [2025-02-05 09:49:48,974 INFO L226 Difference]: Without dead ends: 37 [2025-02-05 09:49:48,974 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2025-02-05 09:49:48,974 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 5 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 09:49:48,975 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 62 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 09:49:48,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2025-02-05 09:49:48,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 33. [2025-02-05 09:49:48,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.28125) internal successors, (41), 32 states have internal predecessors, (41), 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 09:49:48,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2025-02-05 09:49:48,978 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 17 [2025-02-05 09:49:48,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 09:49:48,978 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2025-02-05 09:49:48,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 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 09:49:48,979 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2025-02-05 09:49:48,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-02-05 09:49:48,979 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 09:49:48,979 INFO L218 NwaCegarLoop]: trace histogram [10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 09:49:48,984 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 09:49:49,183 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 09:49:49,183 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 09:49:49,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 09:49:49,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1285758660, now seen corresponding path program 3 times [2025-02-05 09:49:49,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 09:49:49,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939410053] [2025-02-05 09:49:49,184 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 09:49:49,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 09:49:49,193 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 26 statements into 6 equivalence classes. [2025-02-05 09:49:49,205 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 22 of 26 statements. [2025-02-05 09:49:49,205 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-02-05 09:49:49,205 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:49:49,248 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2025-02-05 09:49:49,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 09:49:49,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939410053] [2025-02-05 09:49:49,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939410053] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 09:49:49,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112921967] [2025-02-05 09:49:49,248 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 09:49:49,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:49:49,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 09:49:49,250 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 09:49:49,252 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 09:49:49,285 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 26 statements into 6 equivalence classes. [2025-02-05 09:49:49,309 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 22 of 26 statements. [2025-02-05 09:49:49,310 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-02-05 09:49:49,310 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:49:49,313 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-05 09:49:49,315 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 09:49:49,329 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2025-02-05 09:49:49,329 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 09:49:49,354 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2025-02-05 09:49:49,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112921967] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 09:49:49,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 09:49:49,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2025-02-05 09:49:49,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326232957] [2025-02-05 09:49:49,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 09:49:49,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-05 09:49:49,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 09:49:49,355 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-05 09:49:49,355 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2025-02-05 09:49:49,355 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 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 09:49:49,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 09:49:49,381 INFO L93 Difference]: Finished difference Result 77 states and 108 transitions. [2025-02-05 09:49:49,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-05 09:49:49,382 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 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) Word has length 26 [2025-02-05 09:49:49,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 09:49:49,382 INFO L225 Difference]: With dead ends: 77 [2025-02-05 09:49:49,382 INFO L226 Difference]: Without dead ends: 57 [2025-02-05 09:49:49,383 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2025-02-05 09:49:49,383 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 18 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 09:49:49,383 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 42 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 09:49:49,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2025-02-05 09:49:49,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2025-02-05 09:49:49,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.3035714285714286) internal successors, (73), 56 states have internal predecessors, (73), 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 09:49:49,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 73 transitions. [2025-02-05 09:49:49,387 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 73 transitions. Word has length 26 [2025-02-05 09:49:49,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 09:49:49,387 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 73 transitions. [2025-02-05 09:49:49,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 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 09:49:49,388 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 73 transitions. [2025-02-05 09:49:49,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-02-05 09:49:49,388 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 09:49:49,388 INFO L218 NwaCegarLoop]: trace histogram [10, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 09:49:49,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-02-05 09:49:49,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:49:49,589 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 09:49:49,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 09:49:49,589 INFO L85 PathProgramCache]: Analyzing trace with hash 455009788, now seen corresponding path program 4 times [2025-02-05 09:49:49,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 09:49:49,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736539] [2025-02-05 09:49:49,589 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 09:49:49,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 09:49:49,601 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 38 statements into 2 equivalence classes. [2025-02-05 09:49:49,607 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 38 of 38 statements. [2025-02-05 09:49:49,607 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 09:49:49,607 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:49:49,765 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 1 proven. 51 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2025-02-05 09:49:49,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 09:49:49,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736539] [2025-02-05 09:49:49,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736539] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 09:49:49,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954943080] [2025-02-05 09:49:49,765 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 09:49:49,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:49:49,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 09:49:49,768 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 09:49:49,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-05 09:49:49,809 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 38 statements into 2 equivalence classes. [2025-02-05 09:49:49,829 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 38 of 38 statements. [2025-02-05 09:49:49,829 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 09:49:49,829 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:49:49,830 INFO L256 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-05 09:49:49,831 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 09:49:49,854 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 1 proven. 51 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2025-02-05 09:49:49,854 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 09:49:49,940 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 1 proven. 51 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2025-02-05 09:49:49,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954943080] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 09:49:49,941 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 09:49:49,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2025-02-05 09:49:49,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194268792] [2025-02-05 09:49:49,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 09:49:49,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-02-05 09:49:49,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 09:49:49,942 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-02-05 09:49:49,942 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2025-02-05 09:49:49,942 INFO L87 Difference]: Start difference. First operand 57 states and 73 transitions. Second operand has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 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 09:49:49,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 09:49:49,996 INFO L93 Difference]: Finished difference Result 149 states and 212 transitions. [2025-02-05 09:49:49,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-05 09:49:49,996 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 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 38 [2025-02-05 09:49:49,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 09:49:49,997 INFO L225 Difference]: With dead ends: 149 [2025-02-05 09:49:49,997 INFO L226 Difference]: Without dead ends: 105 [2025-02-05 09:49:49,997 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2025-02-05 09:49:49,997 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 37 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 09:49:49,998 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 61 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 09:49:49,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2025-02-05 09:49:50,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2025-02-05 09:49:50,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.3173076923076923) internal successors, (137), 104 states have internal predecessors, (137), 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 09:49:50,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 137 transitions. [2025-02-05 09:49:50,004 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 137 transitions. Word has length 38 [2025-02-05 09:49:50,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 09:49:50,005 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 137 transitions. [2025-02-05 09:49:50,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 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 09:49:50,005 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 137 transitions. [2025-02-05 09:49:50,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2025-02-05 09:49:50,006 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 09:49:50,006 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 09:49:50,013 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-05 09:49:50,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2025-02-05 09:49:50,207 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 09:49:50,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 09:49:50,208 INFO L85 PathProgramCache]: Analyzing trace with hash -2056286340, now seen corresponding path program 5 times [2025-02-05 09:49:50,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 09:49:50,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218766757] [2025-02-05 09:49:50,208 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 09:49:50,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 09:49:50,224 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 62 statements into 16 equivalence classes. [2025-02-05 09:49:50,301 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) and asserted 54 of 62 statements. [2025-02-05 09:49:50,302 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2025-02-05 09:49:50,302 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:49:50,636 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 1 proven. 287 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2025-02-05 09:49:50,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 09:49:50,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218766757] [2025-02-05 09:49:50,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218766757] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 09:49:50,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289902355] [2025-02-05 09:49:50,637 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 09:49:50,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:49:50,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 09:49:50,638 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 09:49:50,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-05 09:49:50,681 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 62 statements into 16 equivalence classes. [2025-02-05 09:49:50,743 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) and asserted 54 of 62 statements. [2025-02-05 09:49:50,743 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2025-02-05 09:49:50,743 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:49:50,745 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-05 09:49:50,746 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 09:49:50,794 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 1 proven. 287 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2025-02-05 09:49:50,794 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 09:49:51,108 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 1 proven. 287 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2025-02-05 09:49:51,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289902355] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 09:49:51,109 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 09:49:51,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 32 [2025-02-05 09:49:51,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721666831] [2025-02-05 09:49:51,109 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 09:49:51,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-02-05 09:49:51,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 09:49:51,110 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-02-05 09:49:51,111 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2025-02-05 09:49:51,111 INFO L87 Difference]: Start difference. First operand 105 states and 137 transitions. Second operand has 32 states, 32 states have (on average 3.03125) internal successors, (97), 32 states have internal predecessors, (97), 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 09:49:51,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 09:49:51,222 INFO L93 Difference]: Finished difference Result 293 states and 420 transitions. [2025-02-05 09:49:51,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-02-05 09:49:51,223 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.03125) internal successors, (97), 32 states have internal predecessors, (97), 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 62 [2025-02-05 09:49:51,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 09:49:51,224 INFO L225 Difference]: With dead ends: 293 [2025-02-05 09:49:51,224 INFO L226 Difference]: Without dead ends: 201 [2025-02-05 09:49:51,225 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2025-02-05 09:49:51,225 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 99 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 09:49:51,226 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 88 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 09:49:51,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2025-02-05 09:49:51,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2025-02-05 09:49:51,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 200 states have (on average 1.325) internal successors, (265), 200 states have internal predecessors, (265), 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 09:49:51,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 265 transitions. [2025-02-05 09:49:51,243 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 265 transitions. Word has length 62 [2025-02-05 09:49:51,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 09:49:51,243 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 265 transitions. [2025-02-05 09:49:51,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.03125) internal successors, (97), 32 states have internal predecessors, (97), 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 09:49:51,244 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 265 transitions. [2025-02-05 09:49:51,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2025-02-05 09:49:51,245 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 09:49:51,245 INFO L218 NwaCegarLoop]: trace histogram [30, 30, 30, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 09:49:51,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-02-05 09:49:51,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:49:51,449 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 09:49:51,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 09:49:51,450 INFO L85 PathProgramCache]: Analyzing trace with hash 545481340, now seen corresponding path program 6 times [2025-02-05 09:49:51,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 09:49:51,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716529317] [2025-02-05 09:49:51,450 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 09:49:51,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 09:49:51,472 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 110 statements into 32 equivalence classes. [2025-02-05 09:49:51,504 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 31 of 110 statements. [2025-02-05 09:49:51,507 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-02-05 09:49:51,508 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:49:51,966 INFO L134 CoverageAnalysis]: Checked inductivity of 1391 backedges. 1 proven. 59 refuted. 0 times theorem prover too weak. 1331 trivial. 0 not checked. [2025-02-05 09:49:51,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 09:49:51,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716529317] [2025-02-05 09:49:51,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716529317] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 09:49:51,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838794535] [2025-02-05 09:49:51,967 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 09:49:51,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:49:51,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 09:49:51,968 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 09:49:51,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-05 09:49:52,021 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 110 statements into 32 equivalence classes. [2025-02-05 09:49:52,047 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 31 of 110 statements. [2025-02-05 09:49:52,047 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-02-05 09:49:52,047 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:49:52,049 INFO L256 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-02-05 09:49:52,054 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 09:49:52,518 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 09:49:52,519 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2025-02-05 09:49:52,530 INFO L134 CoverageAnalysis]: Checked inductivity of 1391 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 1331 trivial. 0 not checked. [2025-02-05 09:49:52,531 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 09:49:52,776 INFO L349 Elim1Store]: treesize reduction 13, result has 60.6 percent of original size [2025-02-05 09:49:52,780 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 28 [2025-02-05 09:49:52,839 INFO L134 CoverageAnalysis]: Checked inductivity of 1391 backedges. 30 proven. 30 refuted. 0 times theorem prover too weak. 1331 trivial. 0 not checked. [2025-02-05 09:49:52,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838794535] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 09:49:52,843 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 09:49:52,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 8] total 18 [2025-02-05 09:49:52,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086301418] [2025-02-05 09:49:52,843 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 09:49:52,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-05 09:49:52,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 09:49:52,844 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-05 09:49:52,844 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2025-02-05 09:49:52,844 INFO L87 Difference]: Start difference. First operand 201 states and 265 transitions. Second operand has 18 states, 18 states have (on average 2.0) internal successors, (36), 18 states have internal predecessors, (36), 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 09:49:53,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 09:49:53,067 INFO L93 Difference]: Finished difference Result 487 states and 647 transitions. [2025-02-05 09:49:53,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-05 09:49:53,068 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.0) internal successors, (36), 18 states have internal predecessors, (36), 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 110 [2025-02-05 09:49:53,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 09:49:53,071 INFO L225 Difference]: With dead ends: 487 [2025-02-05 09:49:53,071 INFO L226 Difference]: Without dead ends: 299 [2025-02-05 09:49:53,072 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2025-02-05 09:49:53,072 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 101 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 09:49:53,072 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 83 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 09:49:53,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2025-02-05 09:49:53,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 293. [2025-02-05 09:49:53,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 292 states have (on average 1.321917808219178) internal successors, (386), 292 states have internal predecessors, (386), 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 09:49:53,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 386 transitions. [2025-02-05 09:49:53,105 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 386 transitions. Word has length 110 [2025-02-05 09:49:53,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 09:49:53,105 INFO L471 AbstractCegarLoop]: Abstraction has 293 states and 386 transitions. [2025-02-05 09:49:53,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.0) internal successors, (36), 18 states have internal predecessors, (36), 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 09:49:53,106 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 386 transitions. [2025-02-05 09:49:53,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2025-02-05 09:49:53,109 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 09:49:53,110 INFO L218 NwaCegarLoop]: trace histogram [30, 30, 30, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 09:49:53,116 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-02-05 09:49:53,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:49:53,311 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 09:49:53,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 09:49:53,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1720774320, now seen corresponding path program 1 times [2025-02-05 09:49:53,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 09:49:53,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017027491] [2025-02-05 09:49:53,312 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 09:49:53,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 09:49:53,326 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 113 statements into 1 equivalence classes. [2025-02-05 09:49:53,342 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 113 of 113 statements. [2025-02-05 09:49:53,345 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 09:49:53,346 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:49:53,575 INFO L134 CoverageAnalysis]: Checked inductivity of 1393 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 1338 trivial. 0 not checked. [2025-02-05 09:49:53,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 09:49:53,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017027491] [2025-02-05 09:49:53,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017027491] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 09:49:53,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111539993] [2025-02-05 09:49:53,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 09:49:53,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:49:53,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 09:49:53,582 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 09:49:53,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-05 09:49:53,642 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 113 statements into 1 equivalence classes. [2025-02-05 09:49:53,683 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 113 of 113 statements. [2025-02-05 09:49:53,683 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 09:49:53,684 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:49:53,685 INFO L256 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-05 09:49:53,687 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 09:49:53,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1393 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 1338 trivial. 0 not checked. [2025-02-05 09:49:53,720 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 09:49:53,979 INFO L134 CoverageAnalysis]: Checked inductivity of 1393 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 1338 trivial. 0 not checked. [2025-02-05 09:49:53,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111539993] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 09:49:53,979 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 09:49:53,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2025-02-05 09:49:53,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560582709] [2025-02-05 09:49:53,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 09:49:53,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-05 09:49:53,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 09:49:53,980 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-05 09:49:53,980 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-02-05 09:49:53,981 INFO L87 Difference]: Start difference. First operand 293 states and 386 transitions. Second operand has 25 states, 25 states have (on average 1.56) internal successors, (39), 25 states have internal predecessors, (39), 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 09:49:54,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 09:49:54,026 INFO L93 Difference]: Finished difference Result 585 states and 782 transitions. [2025-02-05 09:49:54,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-02-05 09:49:54,030 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.56) internal successors, (39), 25 states have internal predecessors, (39), 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 113 [2025-02-05 09:49:54,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 09:49:54,032 INFO L225 Difference]: With dead ends: 585 [2025-02-05 09:49:54,032 INFO L226 Difference]: Without dead ends: 305 [2025-02-05 09:49:54,033 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-02-05 09:49:54,034 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 09:49:54,034 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 77 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 09:49:54,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2025-02-05 09:49:54,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2025-02-05 09:49:54,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 304 states have (on average 1.3092105263157894) internal successors, (398), 304 states have internal predecessors, (398), 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 09:49:54,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 398 transitions. [2025-02-05 09:49:54,058 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 398 transitions. Word has length 113 [2025-02-05 09:49:54,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 09:49:54,059 INFO L471 AbstractCegarLoop]: Abstraction has 305 states and 398 transitions. [2025-02-05 09:49:54,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.56) internal successors, (39), 25 states have internal predecessors, (39), 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 09:49:54,059 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 398 transitions. [2025-02-05 09:49:54,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2025-02-05 09:49:54,061 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 09:49:54,061 INFO L218 NwaCegarLoop]: trace histogram [30, 30, 30, 22, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 09:49:54,069 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-05 09:49:54,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:49:54,262 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 09:49:54,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 09:49:54,263 INFO L85 PathProgramCache]: Analyzing trace with hash -932167088, now seen corresponding path program 2 times [2025-02-05 09:49:54,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 09:49:54,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597782823] [2025-02-05 09:49:54,263 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 09:49:54,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 09:49:54,286 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 125 statements into 2 equivalence classes. [2025-02-05 09:49:54,310 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 125 of 125 statements. [2025-02-05 09:49:54,310 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 09:49:54,310 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:49:54,878 INFO L134 CoverageAnalysis]: Checked inductivity of 1591 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 1338 trivial. 0 not checked. [2025-02-05 09:49:54,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 09:49:54,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597782823] [2025-02-05 09:49:54,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597782823] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 09:49:54,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268593809] [2025-02-05 09:49:54,878 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 09:49:54,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:49:54,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 09:49:54,880 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 09:49:54,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-05 09:49:54,938 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 125 statements into 2 equivalence classes. [2025-02-05 09:49:54,983 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 125 of 125 statements. [2025-02-05 09:49:54,984 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 09:49:54,984 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:49:54,987 INFO L256 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-02-05 09:49:54,989 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 09:49:55,024 INFO L134 CoverageAnalysis]: Checked inductivity of 1591 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 1338 trivial. 0 not checked. [2025-02-05 09:49:55,025 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 09:49:55,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1591 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 1338 trivial. 0 not checked. [2025-02-05 09:49:55,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268593809] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 09:49:55,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 09:49:55,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2025-02-05 09:49:55,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134078633] [2025-02-05 09:49:55,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 09:49:55,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2025-02-05 09:49:55,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 09:49:55,589 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2025-02-05 09:49:55,590 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2025-02-05 09:49:55,590 INFO L87 Difference]: Start difference. First operand 305 states and 398 transitions. Second operand has 49 states, 49 states have (on average 1.2857142857142858) internal successors, (63), 49 states have internal predecessors, (63), 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 09:49:55,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 09:49:55,634 INFO L93 Difference]: Finished difference Result 609 states and 818 transitions. [2025-02-05 09:49:55,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2025-02-05 09:49:55,634 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.2857142857142858) internal successors, (63), 49 states have internal predecessors, (63), 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 125 [2025-02-05 09:49:55,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 09:49:55,636 INFO L225 Difference]: With dead ends: 609 [2025-02-05 09:49:55,636 INFO L226 Difference]: Without dead ends: 329 [2025-02-05 09:49:55,637 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2025-02-05 09:49:55,637 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 09:49:55,638 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 77 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 09:49:55,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2025-02-05 09:49:55,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 329. [2025-02-05 09:49:55,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 328 states have (on average 1.2865853658536586) internal successors, (422), 328 states have internal predecessors, (422), 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 09:49:55,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 422 transitions. [2025-02-05 09:49:55,653 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 422 transitions. Word has length 125 [2025-02-05 09:49:55,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 09:49:55,653 INFO L471 AbstractCegarLoop]: Abstraction has 329 states and 422 transitions. [2025-02-05 09:49:55,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.2857142857142858) internal successors, (63), 49 states have internal predecessors, (63), 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 09:49:55,653 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 422 transitions. [2025-02-05 09:49:55,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2025-02-05 09:49:55,655 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 09:49:55,655 INFO L218 NwaCegarLoop]: trace histogram [46, 30, 30, 30, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 09:49:55,660 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-02-05 09:49:55,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:49:55,859 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 09:49:55,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 09:49:55,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1290675280, now seen corresponding path program 3 times [2025-02-05 09:49:55,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 09:49:55,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123212184] [2025-02-05 09:49:55,859 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 09:49:55,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 09:49:55,881 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 149 statements into 32 equivalence classes. [2025-02-05 09:49:55,911 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) and asserted 40 of 149 statements. [2025-02-05 09:49:55,912 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2025-02-05 09:49:55,913 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:49:56,453 INFO L134 CoverageAnalysis]: Checked inductivity of 2419 backedges. 1 proven. 147 refuted. 0 times theorem prover too weak. 2271 trivial. 0 not checked. [2025-02-05 09:49:56,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 09:49:56,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123212184] [2025-02-05 09:49:56,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123212184] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 09:49:56,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644283642] [2025-02-05 09:49:56,454 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 09:49:56,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:49:56,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 09:49:56,457 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 09:49:56,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-05 09:49:56,548 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 149 statements into 32 equivalence classes. [2025-02-05 09:49:56,638 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) and asserted 40 of 149 statements. [2025-02-05 09:49:56,638 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2025-02-05 09:49:56,638 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:49:56,640 INFO L256 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-02-05 09:49:56,642 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 09:49:57,813 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 09:49:57,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 13 [2025-02-05 09:49:57,835 INFO L134 CoverageAnalysis]: Checked inductivity of 2419 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 2271 trivial. 0 not checked. [2025-02-05 09:49:57,836 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 09:49:58,260 INFO L349 Elim1Store]: treesize reduction 13, result has 74.5 percent of original size [2025-02-05 09:49:58,261 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 56 treesize of output 49 [2025-02-05 09:49:58,284 INFO L134 CoverageAnalysis]: Checked inductivity of 2419 backedges. 116 proven. 32 refuted. 0 times theorem prover too weak. 2271 trivial. 0 not checked. [2025-02-05 09:49:58,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644283642] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 09:49:58,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 09:49:58,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 12] total 31 [2025-02-05 09:49:58,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332910997] [2025-02-05 09:49:58,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 09:49:58,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-02-05 09:49:58,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 09:49:58,285 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-02-05 09:49:58,286 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=800, Unknown=0, NotChecked=0, Total=930 [2025-02-05 09:49:58,286 INFO L87 Difference]: Start difference. First operand 329 states and 422 transitions. Second operand has 31 states, 31 states have (on average 1.7741935483870968) internal successors, (55), 31 states have internal predecessors, (55), 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 09:49:59,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 09:49:59,041 INFO L93 Difference]: Finished difference Result 445 states and 575 transitions. [2025-02-05 09:49:59,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2025-02-05 09:49:59,041 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.7741935483870968) internal successors, (55), 31 states have internal predecessors, (55), 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 149 [2025-02-05 09:49:59,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 09:49:59,043 INFO L225 Difference]: With dead ends: 445 [2025-02-05 09:49:59,043 INFO L226 Difference]: Without dead ends: 439 [2025-02-05 09:49:59,044 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 279 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 668 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=423, Invalid=2657, Unknown=0, NotChecked=0, Total=3080 [2025-02-05 09:49:59,045 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 85 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-05 09:49:59,045 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 180 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 726 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-05 09:49:59,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2025-02-05 09:49:59,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 332. [2025-02-05 09:49:59,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 331 states have (on average 1.283987915407855) internal successors, (425), 331 states have internal predecessors, (425), 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 09:49:59,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 425 transitions. [2025-02-05 09:49:59,068 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 425 transitions. Word has length 149 [2025-02-05 09:49:59,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 09:49:59,068 INFO L471 AbstractCegarLoop]: Abstraction has 332 states and 425 transitions. [2025-02-05 09:49:59,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.7741935483870968) internal successors, (55), 31 states have internal predecessors, (55), 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 09:49:59,068 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 425 transitions. [2025-02-05 09:49:59,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2025-02-05 09:49:59,069 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 09:49:59,069 INFO L218 NwaCegarLoop]: trace histogram [46, 30, 30, 30, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 09:49:59,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-02-05 09:49:59,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-02-05 09:49:59,270 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 09:49:59,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 09:49:59,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1960906492, now seen corresponding path program 4 times [2025-02-05 09:49:59,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 09:49:59,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534086573] [2025-02-05 09:49:59,274 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 09:49:59,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 09:49:59,295 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 152 statements into 2 equivalence classes. [2025-02-05 09:49:59,309 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 152 of 152 statements. [2025-02-05 09:49:59,309 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 09:49:59,309 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:50:00,084 INFO L134 CoverageAnalysis]: Checked inductivity of 2424 backedges. 1 proven. 1335 refuted. 0 times theorem prover too weak. 1088 trivial. 0 not checked. [2025-02-05 09:50:00,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 09:50:00,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534086573] [2025-02-05 09:50:00,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534086573] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 09:50:00,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802645532] [2025-02-05 09:50:00,085 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 09:50:00,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:50:00,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 09:50:00,087 INFO L229 MonitoredProcess]: Starting monitored process 13 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 09:50:00,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-05 09:50:00,190 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 152 statements into 2 equivalence classes. [2025-02-05 09:50:00,250 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 152 of 152 statements. [2025-02-05 09:50:00,251 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 09:50:00,251 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:50:00,253 INFO L256 TraceCheckSpWp]: Trace formula consists of 737 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-02-05 09:50:00,255 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 09:50:00,352 INFO L134 CoverageAnalysis]: Checked inductivity of 2424 backedges. 1 proven. 1335 refuted. 0 times theorem prover too weak. 1088 trivial. 0 not checked. [2025-02-05 09:50:00,352 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 09:50:01,328 INFO L134 CoverageAnalysis]: Checked inductivity of 2424 backedges. 1 proven. 1335 refuted. 0 times theorem prover too weak. 1088 trivial. 0 not checked. [2025-02-05 09:50:01,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802645532] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 09:50:01,329 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 09:50:01,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 64 [2025-02-05 09:50:01,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520042400] [2025-02-05 09:50:01,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 09:50:01,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2025-02-05 09:50:01,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 09:50:01,331 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2025-02-05 09:50:01,333 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2025-02-05 09:50:01,333 INFO L87 Difference]: Start difference. First operand 332 states and 425 transitions. Second operand has 64 states, 64 states have (on average 3.046875) internal successors, (195), 64 states have internal predecessors, (195), 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 09:50:01,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 09:50:01,623 INFO L93 Difference]: Finished difference Result 903 states and 1280 transitions. [2025-02-05 09:50:01,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2025-02-05 09:50:01,623 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 3.046875) internal successors, (195), 64 states have internal predecessors, (195), 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 152 [2025-02-05 09:50:01,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 09:50:01,626 INFO L225 Difference]: With dead ends: 903 [2025-02-05 09:50:01,627 INFO L226 Difference]: Without dead ends: 620 [2025-02-05 09:50:01,628 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2025-02-05 09:50:01,629 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 258 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 09:50:01,629 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 131 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 09:50:01,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2025-02-05 09:50:01,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 620. [2025-02-05 09:50:01,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 620 states, 619 states have (on average 1.306946688206785) internal successors, (809), 619 states have internal predecessors, (809), 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 09:50:01,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 809 transitions. [2025-02-05 09:50:01,658 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 809 transitions. Word has length 152 [2025-02-05 09:50:01,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 09:50:01,658 INFO L471 AbstractCegarLoop]: Abstraction has 620 states and 809 transitions. [2025-02-05 09:50:01,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 3.046875) internal successors, (195), 64 states have internal predecessors, (195), 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 09:50:01,658 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 809 transitions. [2025-02-05 09:50:01,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2025-02-05 09:50:01,664 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 09:50:01,664 INFO L218 NwaCegarLoop]: trace histogram [62, 62, 62, 46, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 09:50:01,671 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-02-05 09:50:01,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:50:01,865 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 09:50:01,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 09:50:01,865 INFO L85 PathProgramCache]: Analyzing trace with hash -836619012, now seen corresponding path program 5 times [2025-02-05 09:50:01,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 09:50:01,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052711039] [2025-02-05 09:50:01,865 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 09:50:01,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 09:50:01,891 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 248 statements into 64 equivalence classes. [2025-02-05 09:50:02,968 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 63 check-sat command(s) and asserted 240 of 248 statements. [2025-02-05 09:50:02,968 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 63 check-sat command(s) [2025-02-05 09:50:02,968 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:50:05,101 INFO L134 CoverageAnalysis]: Checked inductivity of 6824 backedges. 1 proven. 5735 refuted. 0 times theorem prover too weak. 1088 trivial. 0 not checked. [2025-02-05 09:50:05,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 09:50:05,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052711039] [2025-02-05 09:50:05,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052711039] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 09:50:05,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721084666] [2025-02-05 09:50:05,102 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 09:50:05,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:50:05,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 09:50:05,104 INFO L229 MonitoredProcess]: Starting monitored process 14 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 09:50:05,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-02-05 09:50:05,227 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 248 statements into 64 equivalence classes. [2025-02-05 09:50:20,350 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 63 check-sat command(s) and asserted 240 of 248 statements. [2025-02-05 09:50:20,351 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 63 check-sat command(s) [2025-02-05 09:50:20,351 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:50:20,374 INFO L256 TraceCheckSpWp]: Trace formula consists of 942 conjuncts, 64 conjuncts are in the unsatisfiable core [2025-02-05 09:50:20,377 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 09:50:20,529 INFO L134 CoverageAnalysis]: Checked inductivity of 6824 backedges. 1 proven. 5735 refuted. 0 times theorem prover too weak. 1088 trivial. 0 not checked. [2025-02-05 09:50:20,529 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 09:50:24,225 INFO L134 CoverageAnalysis]: Checked inductivity of 6824 backedges. 1 proven. 5735 refuted. 0 times theorem prover too weak. 1088 trivial. 0 not checked. [2025-02-05 09:50:24,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721084666] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 09:50:24,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 09:50:24,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65, 65] total 128 [2025-02-05 09:50:24,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999603338] [2025-02-05 09:50:24,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 09:50:24,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2025-02-05 09:50:24,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 09:50:24,230 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2025-02-05 09:50:24,233 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8128, Invalid=8128, Unknown=0, NotChecked=0, Total=16256 [2025-02-05 09:50:24,233 INFO L87 Difference]: Start difference. First operand 620 states and 809 transitions. Second operand has 128 states, 128 states have (on average 3.0234375) internal successors, (387), 128 states have internal predecessors, (387), 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 09:50:25,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 09:50:25,542 INFO L93 Difference]: Finished difference Result 1767 states and 2528 transitions. [2025-02-05 09:50:25,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2025-02-05 09:50:25,543 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 128 states have (on average 3.0234375) internal successors, (387), 128 states have internal predecessors, (387), 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 248 [2025-02-05 09:50:25,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 09:50:25,547 INFO L225 Difference]: With dead ends: 1767 [2025-02-05 09:50:25,547 INFO L226 Difference]: Without dead ends: 1196 [2025-02-05 09:50:25,550 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 559 GetRequests, 433 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=8128, Invalid=8128, Unknown=0, NotChecked=0, Total=16256 [2025-02-05 09:50:25,550 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 732 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 732 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-05 09:50:25,551 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [732 Valid, 217 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-05 09:50:25,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1196 states. [2025-02-05 09:50:25,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1196 to 1196. [2025-02-05 09:50:25,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1196 states, 1195 states have (on average 1.3196652719665272) internal successors, (1577), 1195 states have internal predecessors, (1577), 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 09:50:25,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1196 states to 1196 states and 1577 transitions. [2025-02-05 09:50:25,585 INFO L78 Accepts]: Start accepts. Automaton has 1196 states and 1577 transitions. Word has length 248 [2025-02-05 09:50:25,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 09:50:25,585 INFO L471 AbstractCegarLoop]: Abstraction has 1196 states and 1577 transitions. [2025-02-05 09:50:25,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 128 states have (on average 3.0234375) internal successors, (387), 128 states have internal predecessors, (387), 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 09:50:25,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1196 states and 1577 transitions. [2025-02-05 09:50:25,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2025-02-05 09:50:25,589 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 09:50:25,590 INFO L218 NwaCegarLoop]: trace histogram [126, 126, 126, 46, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 09:50:25,606 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-02-05 09:50:25,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:50:25,794 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 09:50:25,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 09:50:25,795 INFO L85 PathProgramCache]: Analyzing trace with hash 298615036, now seen corresponding path program 6 times [2025-02-05 09:50:25,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 09:50:25,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080348095] [2025-02-05 09:50:25,795 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 09:50:25,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 09:50:25,819 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 440 statements into 128 equivalence classes. [2025-02-05 09:50:25,877 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) and asserted 85 of 440 statements. [2025-02-05 09:50:25,877 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2025-02-05 09:50:25,877 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:50:26,456 INFO L134 CoverageAnalysis]: Checked inductivity of 24840 backedges. 1 proven. 1003 refuted. 0 times theorem prover too weak. 23836 trivial. 0 not checked. [2025-02-05 09:50:26,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 09:50:26,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080348095] [2025-02-05 09:50:26,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080348095] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 09:50:26,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985082548] [2025-02-05 09:50:26,457 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 09:50:26,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:50:26,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 09:50:26,461 INFO L229 MonitoredProcess]: Starting monitored process 15 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 09:50:26,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-02-05 09:50:26,601 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 440 statements into 128 equivalence classes. [2025-02-05 09:50:27,142 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) and asserted 85 of 440 statements. [2025-02-05 09:50:27,142 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2025-02-05 09:50:27,142 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:50:27,146 INFO L256 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-02-05 09:50:27,152 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 09:50:28,430 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 09:50:28,431 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 13 [2025-02-05 09:50:28,450 INFO L134 CoverageAnalysis]: Checked inductivity of 24840 backedges. 1 proven. 1003 refuted. 0 times theorem prover too weak. 23836 trivial. 0 not checked. [2025-02-05 09:50:28,450 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 09:50:29,906 INFO L349 Elim1Store]: treesize reduction 13, result has 73.5 percent of original size [2025-02-05 09:50:29,906 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 49 treesize of output 47 [2025-02-05 09:50:29,931 INFO L134 CoverageAnalysis]: Checked inductivity of 24840 backedges. 124 proven. 880 refuted. 0 times theorem prover too weak. 23836 trivial. 0 not checked. [2025-02-05 09:50:29,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985082548] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 09:50:29,932 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 09:50:29,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 14] total 33 [2025-02-05 09:50:29,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864053195] [2025-02-05 09:50:29,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 09:50:29,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2025-02-05 09:50:29,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 09:50:29,933 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2025-02-05 09:50:29,933 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=908, Unknown=0, NotChecked=0, Total=1056 [2025-02-05 09:50:29,933 INFO L87 Difference]: Start difference. First operand 1196 states and 1577 transitions. Second operand has 33 states, 33 states have (on average 2.090909090909091) internal successors, (69), 33 states have internal predecessors, (69), 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 09:50:30,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 09:50:30,308 INFO L93 Difference]: Finished difference Result 1597 states and 2111 transitions. [2025-02-05 09:50:30,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-02-05 09:50:30,308 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.090909090909091) internal successors, (69), 33 states have internal predecessors, (69), 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 440 [2025-02-05 09:50:30,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 09:50:30,313 INFO L225 Difference]: With dead ends: 1597 [2025-02-05 09:50:30,313 INFO L226 Difference]: Without dead ends: 1591 [2025-02-05 09:50:30,314 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 902 GetRequests, 860 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=228, Invalid=1412, Unknown=0, NotChecked=0, Total=1640 [2025-02-05 09:50:30,314 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 45 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 09:50:30,315 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 160 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 09:50:30,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1591 states. [2025-02-05 09:50:30,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1591 to 1199. [2025-02-05 09:50:30,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1199 states, 1198 states have (on average 1.318864774624374) internal successors, (1580), 1198 states have internal predecessors, (1580), 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 09:50:30,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1199 states to 1199 states and 1580 transitions. [2025-02-05 09:50:30,375 INFO L78 Accepts]: Start accepts. Automaton has 1199 states and 1580 transitions. Word has length 440 [2025-02-05 09:50:30,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 09:50:30,376 INFO L471 AbstractCegarLoop]: Abstraction has 1199 states and 1580 transitions. [2025-02-05 09:50:30,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.090909090909091) internal successors, (69), 33 states have internal predecessors, (69), 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 09:50:30,376 INFO L276 IsEmpty]: Start isEmpty. Operand 1199 states and 1580 transitions. [2025-02-05 09:50:30,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2025-02-05 09:50:30,380 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 09:50:30,380 INFO L218 NwaCegarLoop]: trace histogram [126, 126, 126, 46, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 09:50:30,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-02-05 09:50:30,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-02-05 09:50:30,581 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 09:50:30,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 09:50:30,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1164141264, now seen corresponding path program 7 times [2025-02-05 09:50:30,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 09:50:30,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186138676] [2025-02-05 09:50:30,583 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-05 09:50:30,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 09:50:30,606 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 443 statements into 1 equivalence classes. [2025-02-05 09:50:30,631 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 443 of 443 statements. [2025-02-05 09:50:30,631 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 09:50:30,631 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:50:32,390 INFO L134 CoverageAnalysis]: Checked inductivity of 24848 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 23767 trivial. 0 not checked. [2025-02-05 09:50:32,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 09:50:32,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186138676] [2025-02-05 09:50:32,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186138676] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 09:50:32,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481692284] [2025-02-05 09:50:32,391 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-05 09:50:32,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:50:32,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 09:50:32,393 INFO L229 MonitoredProcess]: Starting monitored process 16 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 09:50:32,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-02-05 09:50:32,536 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 443 statements into 1 equivalence classes. [2025-02-05 09:50:32,688 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 443 of 443 statements. [2025-02-05 09:50:32,688 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 09:50:32,688 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:50:32,694 INFO L256 TraceCheckSpWp]: Trace formula consists of 1517 conjuncts, 48 conjuncts are in the unsatisfiable core [2025-02-05 09:50:32,698 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 09:50:32,757 INFO L134 CoverageAnalysis]: Checked inductivity of 24848 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 23767 trivial. 0 not checked. [2025-02-05 09:50:32,757 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 09:50:34,767 INFO L134 CoverageAnalysis]: Checked inductivity of 24848 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 23767 trivial. 0 not checked. [2025-02-05 09:50:34,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481692284] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 09:50:34,767 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 09:50:34,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 97 [2025-02-05 09:50:34,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413779528] [2025-02-05 09:50:34,767 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 09:50:34,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2025-02-05 09:50:34,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 09:50:34,769 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2025-02-05 09:50:34,771 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2025-02-05 09:50:34,771 INFO L87 Difference]: Start difference. First operand 1199 states and 1580 transitions. Second operand has 97 states, 97 states have (on average 1.1443298969072164) internal successors, (111), 97 states have internal predecessors, (111), 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 09:50:34,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 09:50:34,891 INFO L93 Difference]: Finished difference Result 2397 states and 3206 transitions. [2025-02-05 09:50:34,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2025-02-05 09:50:34,892 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 1.1443298969072164) internal successors, (111), 97 states have internal predecessors, (111), 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 443 [2025-02-05 09:50:34,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 09:50:34,895 INFO L225 Difference]: With dead ends: 2397 [2025-02-05 09:50:34,895 INFO L226 Difference]: Without dead ends: 1247 [2025-02-05 09:50:34,897 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 933 GetRequests, 838 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2025-02-05 09:50:34,897 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 09:50:34,897 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 107 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 09:50:34,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1247 states. [2025-02-05 09:50:34,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1247 to 1247. [2025-02-05 09:50:34,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1247 states, 1246 states have (on average 1.3065810593900482) internal successors, (1628), 1246 states have internal predecessors, (1628), 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 09:50:34,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 1628 transitions. [2025-02-05 09:50:34,933 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 1628 transitions. Word has length 443 [2025-02-05 09:50:34,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 09:50:34,934 INFO L471 AbstractCegarLoop]: Abstraction has 1247 states and 1628 transitions. [2025-02-05 09:50:34,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 1.1443298969072164) internal successors, (111), 97 states have internal predecessors, (111), 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 09:50:34,934 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 1628 transitions. [2025-02-05 09:50:34,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2025-02-05 09:50:34,937 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 09:50:34,937 INFO L218 NwaCegarLoop]: trace histogram [126, 126, 126, 94, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 09:50:34,946 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-02-05 09:50:35,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-02-05 09:50:35,138 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 09:50:35,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 09:50:35,139 INFO L85 PathProgramCache]: Analyzing trace with hash -581294384, now seen corresponding path program 8 times [2025-02-05 09:50:35,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 09:50:35,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559991203] [2025-02-05 09:50:35,139 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 09:50:35,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 09:50:35,176 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 491 statements into 2 equivalence classes. [2025-02-05 09:50:35,224 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 491 of 491 statements. [2025-02-05 09:50:35,225 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 09:50:35,225 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:50:40,283 INFO L134 CoverageAnalysis]: Checked inductivity of 28232 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 23767 trivial. 0 not checked. [2025-02-05 09:50:40,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 09:50:40,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559991203] [2025-02-05 09:50:40,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559991203] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 09:50:40,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661181] [2025-02-05 09:50:40,283 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 09:50:40,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:50:40,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 09:50:40,287 INFO L229 MonitoredProcess]: Starting monitored process 17 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 09:50:40,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-02-05 09:50:40,492 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 491 statements into 2 equivalence classes. [2025-02-05 09:50:40,683 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 491 of 491 statements. [2025-02-05 09:50:40,683 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 09:50:40,683 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:50:40,690 INFO L256 TraceCheckSpWp]: Trace formula consists of 1949 conjuncts, 96 conjuncts are in the unsatisfiable core [2025-02-05 09:50:40,697 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 09:50:40,823 INFO L134 CoverageAnalysis]: Checked inductivity of 28232 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 23767 trivial. 0 not checked. [2025-02-05 09:50:40,824 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 09:50:49,094 INFO L134 CoverageAnalysis]: Checked inductivity of 28232 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 23767 trivial. 0 not checked. [2025-02-05 09:50:49,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661181] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 09:50:49,095 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 09:50:49,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97, 97] total 193 [2025-02-05 09:50:49,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701316168] [2025-02-05 09:50:49,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 09:50:49,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 193 states [2025-02-05 09:50:49,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 09:50:49,098 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2025-02-05 09:50:49,100 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2025-02-05 09:50:49,100 INFO L87 Difference]: Start difference. First operand 1247 states and 1628 transitions. Second operand has 193 states, 193 states have (on average 1.072538860103627) internal successors, (207), 193 states have internal predecessors, (207), 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 09:50:49,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 09:50:49,328 INFO L93 Difference]: Finished difference Result 2493 states and 3350 transitions. [2025-02-05 09:50:49,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2025-02-05 09:50:49,329 INFO L78 Accepts]: Start accepts. Automaton has has 193 states, 193 states have (on average 1.072538860103627) internal successors, (207), 193 states have internal predecessors, (207), 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 491 [2025-02-05 09:50:49,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 09:50:49,332 INFO L225 Difference]: With dead ends: 2493 [2025-02-05 09:50:49,332 INFO L226 Difference]: Without dead ends: 1343 [2025-02-05 09:50:49,335 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1077 GetRequests, 886 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2025-02-05 09:50:49,335 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 09:50:49,335 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 92 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 09:50:49,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1343 states. [2025-02-05 09:50:49,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1343 to 1343. [2025-02-05 09:50:49,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1343 states, 1342 states have (on average 1.2846497764530551) internal successors, (1724), 1342 states have internal predecessors, (1724), 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 09:50:49,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1343 states to 1343 states and 1724 transitions. [2025-02-05 09:50:49,370 INFO L78 Accepts]: Start accepts. Automaton has 1343 states and 1724 transitions. Word has length 491 [2025-02-05 09:50:49,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 09:50:49,370 INFO L471 AbstractCegarLoop]: Abstraction has 1343 states and 1724 transitions. [2025-02-05 09:50:49,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 193 states, 193 states have (on average 1.072538860103627) internal successors, (207), 193 states have internal predecessors, (207), 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 09:50:49,370 INFO L276 IsEmpty]: Start isEmpty. Operand 1343 states and 1724 transitions. [2025-02-05 09:50:49,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 588 [2025-02-05 09:50:49,373 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 09:50:49,373 INFO L218 NwaCegarLoop]: trace histogram [190, 126, 126, 126, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 09:50:49,381 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-02-05 09:50:49,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-02-05 09:50:49,574 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 09:50:49,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 09:50:49,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1627410736, now seen corresponding path program 9 times [2025-02-05 09:50:49,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 09:50:49,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201655654] [2025-02-05 09:50:49,574 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 09:50:49,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 09:50:49,630 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 587 statements into 128 equivalence classes. [2025-02-05 09:50:49,660 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) and asserted 76 of 587 statements. [2025-02-05 09:50:49,660 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2025-02-05 09:50:49,660 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:50:50,061 INFO L134 CoverageAnalysis]: Checked inductivity of 41912 backedges. 1 proven. 1379 refuted. 0 times theorem prover too weak. 40532 trivial. 0 not checked. [2025-02-05 09:50:50,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 09:50:50,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201655654] [2025-02-05 09:50:50,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201655654] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 09:50:50,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565899499] [2025-02-05 09:50:50,061 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 09:50:50,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:50:50,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 09:50:50,064 INFO L229 MonitoredProcess]: Starting monitored process 18 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 09:50:50,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-02-05 09:50:50,304 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 587 statements into 128 equivalence classes. [2025-02-05 09:50:51,477 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) and asserted 76 of 587 statements. [2025-02-05 09:50:51,477 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2025-02-05 09:50:51,477 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:50:51,482 INFO L256 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 43 conjuncts are in the unsatisfiable core [2025-02-05 09:50:51,489 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 09:50:52,805 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 09:50:52,806 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 13 [2025-02-05 09:50:52,827 INFO L134 CoverageAnalysis]: Checked inductivity of 41912 backedges. 1 proven. 1379 refuted. 0 times theorem prover too weak. 40532 trivial. 0 not checked. [2025-02-05 09:50:52,827 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 09:50:54,220 INFO L349 Elim1Store]: treesize reduction 13, result has 73.5 percent of original size [2025-02-05 09:50:54,221 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 49 treesize of output 47 [2025-02-05 09:50:54,244 INFO L134 CoverageAnalysis]: Checked inductivity of 41912 backedges. 123 proven. 1257 refuted. 0 times theorem prover too weak. 40532 trivial. 0 not checked. [2025-02-05 09:50:54,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565899499] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 09:50:54,245 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 09:50:54,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 17] total 40 [2025-02-05 09:50:54,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047722380] [2025-02-05 09:50:54,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 09:50:54,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2025-02-05 09:50:54,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 09:50:54,246 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2025-02-05 09:50:54,246 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1370, Unknown=0, NotChecked=0, Total=1560 [2025-02-05 09:50:54,246 INFO L87 Difference]: Start difference. First operand 1343 states and 1724 transitions. Second operand has 40 states, 40 states have (on average 2.075) internal successors, (83), 40 states have internal predecessors, (83), 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 09:50:54,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 09:50:54,795 INFO L93 Difference]: Finished difference Result 1753 states and 2270 transitions. [2025-02-05 09:50:54,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-02-05 09:50:54,795 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.075) internal successors, (83), 40 states have internal predecessors, (83), 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 587 [2025-02-05 09:50:54,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 09:50:54,801 INFO L225 Difference]: With dead ends: 1753 [2025-02-05 09:50:54,801 INFO L226 Difference]: Without dead ends: 1747 [2025-02-05 09:50:54,801 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1199 GetRequests, 1150 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 478 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=279, Invalid=2073, Unknown=0, NotChecked=0, Total=2352 [2025-02-05 09:50:54,803 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 82 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 881 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-05 09:50:54,803 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 245 Invalid, 888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 881 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-05 09:50:54,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1747 states. [2025-02-05 09:50:54,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1747 to 1346. [2025-02-05 09:50:54,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1346 states, 1345 states have (on average 1.284014869888476) internal successors, (1727), 1345 states have internal predecessors, (1727), 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 09:50:54,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1346 states to 1346 states and 1727 transitions. [2025-02-05 09:50:54,845 INFO L78 Accepts]: Start accepts. Automaton has 1346 states and 1727 transitions. Word has length 587 [2025-02-05 09:50:54,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 09:50:54,846 INFO L471 AbstractCegarLoop]: Abstraction has 1346 states and 1727 transitions. [2025-02-05 09:50:54,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.075) internal successors, (83), 40 states have internal predecessors, (83), 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 09:50:54,846 INFO L276 IsEmpty]: Start isEmpty. Operand 1346 states and 1727 transitions. [2025-02-05 09:50:54,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 591 [2025-02-05 09:50:54,849 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 09:50:54,849 INFO L218 NwaCegarLoop]: trace histogram [190, 126, 126, 126, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 09:50:54,860 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-02-05 09:50:55,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-02-05 09:50:55,053 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 09:50:55,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 09:50:55,054 INFO L85 PathProgramCache]: Analyzing trace with hash -601525124, now seen corresponding path program 10 times [2025-02-05 09:50:55,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 09:50:55,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429157131] [2025-02-05 09:50:55,054 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 09:50:55,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 09:50:55,117 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 590 statements into 2 equivalence classes. [2025-02-05 09:50:55,158 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 590 of 590 statements. [2025-02-05 09:50:55,158 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 09:50:55,158 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:51:04,239 INFO L134 CoverageAnalysis]: Checked inductivity of 41923 backedges. 1 proven. 23751 refuted. 0 times theorem prover too weak. 18171 trivial. 0 not checked. [2025-02-05 09:51:04,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 09:51:04,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429157131] [2025-02-05 09:51:04,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429157131] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 09:51:04,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716518836] [2025-02-05 09:51:04,240 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 09:51:04,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:51:04,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 09:51:04,242 INFO L229 MonitoredProcess]: Starting monitored process 19 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 09:51:04,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-02-05 09:51:04,536 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 590 statements into 2 equivalence classes. [2025-02-05 09:51:04,775 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 590 of 590 statements. [2025-02-05 09:51:04,775 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 09:51:04,775 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:51:04,788 INFO L256 TraceCheckSpWp]: Trace formula consists of 2825 conjuncts, 128 conjuncts are in the unsatisfiable core [2025-02-05 09:51:04,794 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 09:51:05,097 INFO L134 CoverageAnalysis]: Checked inductivity of 41923 backedges. 1 proven. 23751 refuted. 0 times theorem prover too weak. 18171 trivial. 0 not checked. [2025-02-05 09:51:05,097 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 09:51:18,669 INFO L134 CoverageAnalysis]: Checked inductivity of 41923 backedges. 1 proven. 23751 refuted. 0 times theorem prover too weak. 18171 trivial. 0 not checked. [2025-02-05 09:51:18,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716518836] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 09:51:18,670 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 09:51:18,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [129, 129, 129] total 256 [2025-02-05 09:51:18,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353049550] [2025-02-05 09:51:18,670 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 09:51:18,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 256 states [2025-02-05 09:51:18,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 09:51:18,675 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 256 interpolants. [2025-02-05 09:51:18,678 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32640, Invalid=32640, Unknown=0, NotChecked=0, Total=65280 [2025-02-05 09:51:18,678 INFO L87 Difference]: Start difference. First operand 1346 states and 1727 transitions. Second operand has 256 states, 256 states have (on average 3.01171875) internal successors, (771), 256 states have internal predecessors, (771), 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)