./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-cav19/array_init_var_plus_ind.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-cav19/array_init_var_plus_ind.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c51b17720ce1dad8733576d816f307564aabdff8c7a86cf8d9848ed8571cafd2 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-05 10:25:09,198 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 10:25:09,253 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-05 10:25:09,258 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 10:25:09,259 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 10:25:09,276 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 10:25:09,277 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 10:25:09,277 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 10:25:09,278 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 10:25:09,278 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 10:25:09,278 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 10:25:09,278 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 10:25:09,279 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 10:25:09,279 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 10:25:09,279 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 10:25:09,279 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 10:25:09,279 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 10:25:09,279 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 10:25:09,279 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-05 10:25:09,280 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 10:25:09,280 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 10:25:09,280 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 10:25:09,280 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 10:25:09,280 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 10:25:09,280 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 10:25:09,280 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 10:25:09,280 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 10:25:09,281 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 10:25:09,281 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 10:25:09,281 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 10:25:09,281 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 10:25:09,281 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 10:25:09,281 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 10:25:09,281 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 10:25:09,281 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 10:25:09,282 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 10:25:09,282 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 10:25:09,282 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-05 10:25:09,282 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-05 10:25:09,282 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 10:25:09,282 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 10:25:09,282 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 10:25:09,282 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 10:25:09,283 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 -> c51b17720ce1dad8733576d816f307564aabdff8c7a86cf8d9848ed8571cafd2 [2025-02-05 10:25:09,550 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 10:25:09,561 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 10:25:09,563 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 10:25:09,565 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 10:25:09,565 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 10:25:09,566 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-cav19/array_init_var_plus_ind.c [2025-02-05 10:25:10,798 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d2a74fd10/a89ecab9aac54ccc8d0535a79bbcc9aa/FLAG5b632ad3c [2025-02-05 10:25:11,078 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 10:25:11,081 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-cav19/array_init_var_plus_ind.c [2025-02-05 10:25:11,088 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d2a74fd10/a89ecab9aac54ccc8d0535a79bbcc9aa/FLAG5b632ad3c [2025-02-05 10:25:11,386 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d2a74fd10/a89ecab9aac54ccc8d0535a79bbcc9aa [2025-02-05 10:25:11,388 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 10:25:11,389 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 10:25:11,390 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 10:25:11,391 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 10:25:11,394 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 10:25:11,395 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 10:25:11" (1/1) ... [2025-02-05 10:25:11,395 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dfa1513 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:25:11, skipping insertion in model container [2025-02-05 10:25:11,396 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 10:25:11" (1/1) ... [2025-02-05 10:25:11,407 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 10:25:11,504 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-cav19/array_init_var_plus_ind.c[414,427] [2025-02-05 10:25:11,517 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 10:25:11,523 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 10:25:11,530 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-cav19/array_init_var_plus_ind.c[414,427] [2025-02-05 10:25:11,534 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 10:25:11,544 INFO L204 MainTranslator]: Completed translation [2025-02-05 10:25:11,545 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:25:11 WrapperNode [2025-02-05 10:25:11,545 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 10:25:11,546 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 10:25:11,546 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 10:25:11,546 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 10:25:11,551 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:25:11" (1/1) ... [2025-02-05 10:25:11,556 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:25:11" (1/1) ... [2025-02-05 10:25:11,566 INFO L138 Inliner]: procedures = 15, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 46 [2025-02-05 10:25:11,567 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 10:25:11,567 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 10:25:11,568 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 10:25:11,568 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 10:25:11,572 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:25:11" (1/1) ... [2025-02-05 10:25:11,572 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:25:11" (1/1) ... [2025-02-05 10:25:11,574 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:25:11" (1/1) ... [2025-02-05 10:25:11,584 INFO L175 MemorySlicer]: Split 4 memory accesses to 2 slices as follows [2, 2]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2025-02-05 10:25:11,584 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:25:11" (1/1) ... [2025-02-05 10:25:11,584 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:25:11" (1/1) ... [2025-02-05 10:25:11,588 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:25:11" (1/1) ... [2025-02-05 10:25:11,591 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:25:11" (1/1) ... [2025-02-05 10:25:11,592 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:25:11" (1/1) ... [2025-02-05 10:25:11,592 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:25:11" (1/1) ... [2025-02-05 10:25:11,593 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 10:25:11,594 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 10:25:11,594 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 10:25:11,594 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 10:25:11,594 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:25:11" (1/1) ... [2025-02-05 10:25:11,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 10:25:11,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:25:11,617 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 10:25:11,619 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 10:25:11,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 10:25:11,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-05 10:25:11,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-05 10:25:11,635 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-05 10:25:11,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-05 10:25:11,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-05 10:25:11,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 10:25:11,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 10:25:11,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-05 10:25:11,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-05 10:25:11,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-05 10:25:11,680 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 10:25:11,681 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 10:25:11,775 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L15: call ULTIMATE.dealloc(main_~#a~0#1.base, main_~#a~0#1.offset);havoc main_~#a~0#1.base, main_~#a~0#1.offset; [2025-02-05 10:25:11,778 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2025-02-05 10:25:11,778 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 10:25:11,784 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 10:25:11,784 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 10:25:11,784 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 10:25:11 BoogieIcfgContainer [2025-02-05 10:25:11,784 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 10:25:11,786 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 10:25:11,786 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 10:25:11,789 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 10:25:11,789 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 10:25:11" (1/3) ... [2025-02-05 10:25:11,789 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52d06dd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 10:25:11, skipping insertion in model container [2025-02-05 10:25:11,789 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:25:11" (2/3) ... [2025-02-05 10:25:11,789 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52d06dd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 10:25:11, skipping insertion in model container [2025-02-05 10:25:11,789 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 10:25:11" (3/3) ... [2025-02-05 10:25:11,790 INFO L128 eAbstractionObserver]: Analyzing ICFG array_init_var_plus_ind.c [2025-02-05 10:25:11,800 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 10:25:11,801 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG array_init_var_plus_ind.c that has 1 procedures, 13 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2025-02-05 10:25:11,831 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 10:25:11,838 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;@33169ad2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 10:25:11,839 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-05 10:25:11,841 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 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 10:25:11,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-02-05 10:25:11,844 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:25:11,845 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:25:11,845 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:25:11,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:25:11,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1039786094, now seen corresponding path program 1 times [2025-02-05 10:25:11,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:25:11,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751362020] [2025-02-05 10:25:11,854 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:25:11,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:25:11,895 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-05 10:25:11,906 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-05 10:25:11,907 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:25:11,907 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:25:11,993 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 10:25:11,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:25:11,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751362020] [2025-02-05 10:25:11,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751362020] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 10:25:11,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 10:25:11,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-05 10:25:11,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986266303] [2025-02-05 10:25:11,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 10:25:11,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 10:25:11,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:25:12,008 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 10:25:12,008 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-05 10:25:12,010 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 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 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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 10:25:12,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:25:12,037 INFO L93 Difference]: Finished difference Result 30 states and 38 transitions. [2025-02-05 10:25:12,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 10:25:12,038 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2025-02-05 10:25:12,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:25:12,042 INFO L225 Difference]: With dead ends: 30 [2025-02-05 10:25:12,043 INFO L226 Difference]: Without dead ends: 18 [2025-02-05 10:25:12,044 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-05 10:25:12,046 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 31 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 10:25:12,047 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 16 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 10:25:12,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2025-02-05 10:25:12,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 11. [2025-02-05 10:25:12,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 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 10:25:12,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2025-02-05 10:25:12,066 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 7 [2025-02-05 10:25:12,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:25:12,066 INFO L471 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2025-02-05 10:25:12,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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 10:25:12,066 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2025-02-05 10:25:12,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-02-05 10:25:12,067 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:25:12,067 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:25:12,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-05 10:25:12,067 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:25:12,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:25:12,068 INFO L85 PathProgramCache]: Analyzing trace with hash 2141847483, now seen corresponding path program 1 times [2025-02-05 10:25:12,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:25:12,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754664841] [2025-02-05 10:25:12,068 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:25:12,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:25:12,075 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-05 10:25:12,081 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-05 10:25:12,081 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:25:12,081 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:25:12,161 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 10:25:12,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:25:12,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754664841] [2025-02-05 10:25:12,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754664841] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 10:25:12,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 10:25:12,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 10:25:12,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755643551] [2025-02-05 10:25:12,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 10:25:12,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 10:25:12,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:25:12,165 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 10:25:12,166 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-05 10:25:12,166 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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 10:25:12,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:25:12,185 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2025-02-05 10:25:12,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 10:25:12,186 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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 10:25:12,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:25:12,186 INFO L225 Difference]: With dead ends: 19 [2025-02-05 10:25:12,186 INFO L226 Difference]: Without dead ends: 12 [2025-02-05 10:25:12,186 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-05 10:25:12,187 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 10:25:12,187 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 10:25:12,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2025-02-05 10:25:12,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2025-02-05 10:25:12,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:25:12,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2025-02-05 10:25:12,189 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 8 [2025-02-05 10:25:12,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:25:12,189 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2025-02-05 10:25:12,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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 10:25:12,189 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2025-02-05 10:25:12,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-02-05 10:25:12,190 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:25:12,190 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:25:12,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-05 10:25:12,190 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:25:12,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:25:12,190 INFO L85 PathProgramCache]: Analyzing trace with hash 2035593711, now seen corresponding path program 1 times [2025-02-05 10:25:12,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:25:12,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852101395] [2025-02-05 10:25:12,191 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:25:12,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:25:12,196 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-05 10:25:12,208 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-05 10:25:12,208 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:25:12,208 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:25:12,275 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 10:25:12,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:25:12,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852101395] [2025-02-05 10:25:12,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852101395] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:25:12,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508159364] [2025-02-05 10:25:12,276 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:25:12,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:25:12,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:25:12,283 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 10:25:12,284 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 10:25:12,331 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-05 10:25:12,346 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-05 10:25:12,346 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:25:12,346 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:25:12,349 INFO L256 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-05 10:25:12,352 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:25:12,426 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 10:25:12,429 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:25:12,471 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 10:25:12,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508159364] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:25:12,472 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:25:12,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 11 [2025-02-05 10:25:12,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10100829] [2025-02-05 10:25:12,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:25:12,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-05 10:25:12,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:25:12,473 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-05 10:25:12,474 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2025-02-05 10:25:12,474 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 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 10:25:12,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:25:12,566 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2025-02-05 10:25:12,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-05 10:25:12,569 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 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 10:25:12,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:25:12,569 INFO L225 Difference]: With dead ends: 37 [2025-02-05 10:25:12,569 INFO L226 Difference]: Without dead ends: 29 [2025-02-05 10:25:12,569 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2025-02-05 10:25:12,570 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 89 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 10:25:12,570 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 41 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 10:25:12,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2025-02-05 10:25:12,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 17. [2025-02-05 10:25:12,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 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 10:25:12,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2025-02-05 10:25:12,574 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 9 [2025-02-05 10:25:12,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:25:12,574 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2025-02-05 10:25:12,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 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 10:25:12,575 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2025-02-05 10:25:12,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-02-05 10:25:12,575 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:25:12,576 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:25:12,584 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-05 10:25:12,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:25:12,777 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:25:12,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:25:12,778 INFO L85 PathProgramCache]: Analyzing trace with hash -582250183, now seen corresponding path program 1 times [2025-02-05 10:25:12,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:25:12,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906942452] [2025-02-05 10:25:12,778 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:25:12,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:25:12,788 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-05 10:25:12,801 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-05 10:25:12,804 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:25:12,805 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:25:13,006 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:25:13,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:25:13,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906942452] [2025-02-05 10:25:13,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906942452] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:25:13,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718994328] [2025-02-05 10:25:13,007 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:25:13,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:25:13,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:25:13,011 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 10:25:13,019 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 10:25:13,047 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-05 10:25:13,063 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-05 10:25:13,063 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:25:13,063 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:25:13,063 INFO L256 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-05 10:25:13,065 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:25:13,141 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-05 10:25:13,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-02-05 10:25:13,215 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:25:13,216 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:25:13,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2025-02-05 10:25:13,253 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2025-02-05 10:25:13,295 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:25:13,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718994328] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:25:13,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:25:13,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-02-05 10:25:13,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394414483] [2025-02-05 10:25:13,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:25:13,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-05 10:25:13,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:25:13,297 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-05 10:25:13,297 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2025-02-05 10:25:13,297 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 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 10:25:13,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:25:13,388 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2025-02-05 10:25:13,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-05 10:25:13,389 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 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) Word has length 12 [2025-02-05 10:25:13,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:25:13,389 INFO L225 Difference]: With dead ends: 28 [2025-02-05 10:25:13,389 INFO L226 Difference]: Without dead ends: 26 [2025-02-05 10:25:13,389 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2025-02-05 10:25:13,390 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 10 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 10:25:13,390 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 85 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 10:25:13,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2025-02-05 10:25:13,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 20. [2025-02-05 10:25:13,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:25:13,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2025-02-05 10:25:13,397 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 12 [2025-02-05 10:25:13,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:25:13,397 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2025-02-05 10:25:13,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 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 10:25:13,397 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2025-02-05 10:25:13,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-02-05 10:25:13,398 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:25:13,398 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:25:13,411 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 10:25:13,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:25:13,599 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:25:13,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:25:13,600 INFO L85 PathProgramCache]: Analyzing trace with hash 724338776, now seen corresponding path program 2 times [2025-02-05 10:25:13,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:25:13,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429385060] [2025-02-05 10:25:13,601 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 10:25:13,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:25:13,612 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-02-05 10:25:13,632 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-02-05 10:25:13,632 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 10:25:13,632 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:25:13,895 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:25:13,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:25:13,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429385060] [2025-02-05 10:25:13,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429385060] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:25:13,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155826572] [2025-02-05 10:25:13,896 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 10:25:13,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:25:13,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:25:13,905 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 10:25:13,911 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 10:25:13,939 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-02-05 10:25:13,950 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-02-05 10:25:13,950 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 10:25:13,950 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:25:13,951 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-02-05 10:25:13,953 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:25:14,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-05 10:25:14,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-05 10:25:14,023 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2025-02-05 10:25:14,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-02-05 10:25:14,125 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:25:14,126 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:25:14,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2025-02-05 10:25:14,229 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 110 [2025-02-05 10:25:14,304 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:25:14,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155826572] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:25:14,304 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:25:14,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2025-02-05 10:25:14,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169187213] [2025-02-05 10:25:14,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:25:14,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-02-05 10:25:14,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:25:14,306 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-02-05 10:25:14,307 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2025-02-05 10:25:14,307 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 16 states, 16 states have (on average 2.0625) internal successors, (33), 16 states have internal predecessors, (33), 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 10:25:14,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:25:14,440 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2025-02-05 10:25:14,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-05 10:25:14,440 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.0625) internal successors, (33), 16 states have internal predecessors, (33), 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 10:25:14,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:25:14,441 INFO L225 Difference]: With dead ends: 25 [2025-02-05 10:25:14,441 INFO L226 Difference]: Without dead ends: 23 [2025-02-05 10:25:14,441 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2025-02-05 10:25:14,442 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 13 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 10:25:14,442 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 51 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 10:25:14,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2025-02-05 10:25:14,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 19. [2025-02-05 10:25:14,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 18 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 10:25:14,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2025-02-05 10:25:14,448 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 14 [2025-02-05 10:25:14,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:25:14,448 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2025-02-05 10:25:14,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.0625) internal successors, (33), 16 states have internal predecessors, (33), 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 10:25:14,448 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2025-02-05 10:25:14,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-02-05 10:25:14,448 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:25:14,448 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:25:14,461 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 10:25:14,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:25:14,649 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:25:14,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:25:14,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1558579602, now seen corresponding path program 1 times [2025-02-05 10:25:14,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:25:14,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048152312] [2025-02-05 10:25:14,650 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:25:14,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:25:14,657 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-05 10:25:14,662 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-05 10:25:14,663 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:25:14,663 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:25:14,714 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:25:14,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:25:14,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048152312] [2025-02-05 10:25:14,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048152312] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:25:14,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286287814] [2025-02-05 10:25:14,714 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:25:14,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:25:14,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:25:14,716 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 10:25:14,718 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 10:25:14,744 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-05 10:25:14,754 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-05 10:25:14,754 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:25:14,754 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:25:14,755 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-05 10:25:14,755 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:25:14,792 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:25:14,792 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:25:14,821 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:25:14,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286287814] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:25:14,821 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:25:14,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2025-02-05 10:25:14,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293596559] [2025-02-05 10:25:14,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:25:14,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-05 10:25:14,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:25:14,822 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-05 10:25:14,822 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2025-02-05 10:25:14,822 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 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 10:25:14,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:25:14,845 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2025-02-05 10:25:14,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-05 10:25:14,846 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 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 15 [2025-02-05 10:25:14,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:25:14,847 INFO L225 Difference]: With dead ends: 29 [2025-02-05 10:25:14,847 INFO L226 Difference]: Without dead ends: 19 [2025-02-05 10:25:14,847 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2025-02-05 10:25:14,847 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 10:25:14,847 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 10:25:14,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2025-02-05 10:25:14,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2025-02-05 10:25:14,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 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 10:25:14,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2025-02-05 10:25:14,850 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 15 [2025-02-05 10:25:14,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:25:14,851 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2025-02-05 10:25:14,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 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 10:25:14,851 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2025-02-05 10:25:14,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-02-05 10:25:14,851 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:25:14,851 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:25:14,857 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 10:25:15,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2025-02-05 10:25:15,052 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:25:15,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:25:15,053 INFO L85 PathProgramCache]: Analyzing trace with hash 861653523, now seen corresponding path program 2 times [2025-02-05 10:25:15,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:25:15,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491304011] [2025-02-05 10:25:15,053 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 10:25:15,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:25:15,059 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-02-05 10:25:15,066 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-02-05 10:25:15,066 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 10:25:15,066 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:25:15,265 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:25:15,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:25:15,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491304011] [2025-02-05 10:25:15,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491304011] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:25:15,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36897853] [2025-02-05 10:25:15,267 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 10:25:15,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:25:15,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:25:15,269 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 10:25:15,270 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 10:25:15,299 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-02-05 10:25:15,311 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-02-05 10:25:15,312 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 10:25:15,312 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:25:15,312 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-02-05 10:25:15,314 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:25:15,360 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-02-05 10:25:15,494 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-02-05 10:25:15,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2025-02-05 10:25:15,506 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:25:15,506 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:25:15,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2025-02-05 10:25:15,639 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2025-02-05 10:25:15,737 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:25:15,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36897853] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:25:15,738 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:25:15,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2025-02-05 10:25:15,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195382122] [2025-02-05 10:25:15,738 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:25:15,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-02-05 10:25:15,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:25:15,738 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-02-05 10:25:15,738 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2025-02-05 10:25:15,739 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 21 states, 21 states have (on average 2.142857142857143) internal successors, (45), 21 states have internal predecessors, (45), 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 10:25:15,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:25:15,895 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2025-02-05 10:25:15,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-05 10:25:15,895 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.142857142857143) internal successors, (45), 21 states have internal predecessors, (45), 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 10:25:15,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:25:15,896 INFO L225 Difference]: With dead ends: 29 [2025-02-05 10:25:15,896 INFO L226 Difference]: Without dead ends: 20 [2025-02-05 10:25:15,897 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=110, Invalid=396, Unknown=0, NotChecked=0, Total=506 [2025-02-05 10:25:15,897 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 4 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 10:25:15,897 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 66 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 10:25:15,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2025-02-05 10:25:15,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2025-02-05 10:25:15,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 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 10:25:15,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2025-02-05 10:25:15,899 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 17 [2025-02-05 10:25:15,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:25:15,899 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2025-02-05 10:25:15,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.142857142857143) internal successors, (45), 21 states have internal predecessors, (45), 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 10:25:15,901 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2025-02-05 10:25:15,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-02-05 10:25:15,902 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:25:15,902 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:25:15,908 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 10:25:16,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:25:16,103 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:25:16,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:25:16,103 INFO L85 PathProgramCache]: Analyzing trace with hash 113153849, now seen corresponding path program 1 times [2025-02-05 10:25:16,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:25:16,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660643922] [2025-02-05 10:25:16,104 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:25:16,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:25:16,113 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-05 10:25:16,120 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-05 10:25:16,120 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:25:16,120 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:25:16,181 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-05 10:25:16,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:25:16,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660643922] [2025-02-05 10:25:16,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660643922] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:25:16,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691057713] [2025-02-05 10:25:16,182 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:25:16,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:25:16,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:25:16,186 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 10:25:16,192 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 10:25:16,219 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-05 10:25:16,230 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-05 10:25:16,230 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:25:16,230 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:25:16,231 INFO L256 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-05 10:25:16,231 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:25:16,290 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-05 10:25:16,290 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:25:16,359 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-05 10:25:16,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691057713] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:25:16,360 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:25:16,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2025-02-05 10:25:16,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178204250] [2025-02-05 10:25:16,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:25:16,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-05 10:25:16,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:25:16,361 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-05 10:25:16,361 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=195, Unknown=0, NotChecked=0, Total=342 [2025-02-05 10:25:16,361 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 19 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 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 10:25:16,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:25:16,460 INFO L93 Difference]: Finished difference Result 87 states and 100 transitions. [2025-02-05 10:25:16,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-05 10:25:16,461 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 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 18 [2025-02-05 10:25:16,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:25:16,461 INFO L225 Difference]: With dead ends: 87 [2025-02-05 10:25:16,461 INFO L226 Difference]: Without dead ends: 79 [2025-02-05 10:25:16,462 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=222, Invalid=330, Unknown=0, NotChecked=0, Total=552 [2025-02-05 10:25:16,463 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 142 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 10:25:16,463 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 48 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 10:25:16,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2025-02-05 10:25:16,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 31. [2025-02-05 10:25:16,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 30 states have internal predecessors, (38), 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 10:25:16,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2025-02-05 10:25:16,467 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 18 [2025-02-05 10:25:16,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:25:16,467 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2025-02-05 10:25:16,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 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 10:25:16,467 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2025-02-05 10:25:16,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-02-05 10:25:16,468 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:25:16,468 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:25:16,474 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 10:25:16,668 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,SelfDestructingSolverStorable7 [2025-02-05 10:25:16,669 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:25:16,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:25:16,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1130589780, now seen corresponding path program 3 times [2025-02-05 10:25:16,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:25:16,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178076695] [2025-02-05 10:25:16,670 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 10:25:16,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:25:16,676 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 5 equivalence classes. [2025-02-05 10:25:16,686 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) and asserted 19 of 19 statements. [2025-02-05 10:25:16,686 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2025-02-05 10:25:16,686 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:25:16,991 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:25:16,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:25:16,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178076695] [2025-02-05 10:25:16,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178076695] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:25:16,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105493307] [2025-02-05 10:25:16,991 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 10:25:16,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:25:16,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:25:16,996 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 10:25:16,997 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 10:25:17,025 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 5 equivalence classes. [2025-02-05 10:25:17,048 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) and asserted 19 of 19 statements. [2025-02-05 10:25:17,048 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2025-02-05 10:25:17,048 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:25:17,049 INFO L256 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-02-05 10:25:17,051 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:25:17,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-05 10:25:17,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-05 10:25:17,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2025-02-05 10:25:17,227 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-02-05 10:25:17,238 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:25:17,238 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:25:17,331 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2025-02-05 10:25:17,334 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 110 [2025-02-05 10:25:17,413 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:25:17,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105493307] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:25:17,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:25:17,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 27 [2025-02-05 10:25:17,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102513287] [2025-02-05 10:25:17,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:25:17,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-02-05 10:25:17,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:25:17,415 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-02-05 10:25:17,415 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=607, Unknown=0, NotChecked=0, Total=702 [2025-02-05 10:25:17,415 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:25:17,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:25:17,579 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2025-02-05 10:25:17,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-05 10:25:17,579 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-02-05 10:25:17,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:25:17,580 INFO L225 Difference]: With dead ends: 37 [2025-02-05 10:25:17,580 INFO L226 Difference]: Without dead ends: 35 [2025-02-05 10:25:17,581 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=151, Invalid=841, Unknown=0, NotChecked=0, Total=992 [2025-02-05 10:25:17,581 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 52 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 10:25:17,581 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 63 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 10:25:17,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2025-02-05 10:25:17,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2025-02-05 10:25:17,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 33 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 10:25:17,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2025-02-05 10:25:17,590 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 19 [2025-02-05 10:25:17,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:25:17,590 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2025-02-05 10:25:17,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:25:17,590 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2025-02-05 10:25:17,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-02-05 10:25:17,591 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:25:17,591 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2025-02-05 10:25:17,597 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-05 10:25:17,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:25:17,792 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:25:17,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:25:17,793 INFO L85 PathProgramCache]: Analyzing trace with hash 267473559, now seen corresponding path program 4 times [2025-02-05 10:25:17,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:25:17,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292300203] [2025-02-05 10:25:17,793 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 10:25:17,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:25:17,801 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 22 statements into 2 equivalence classes. [2025-02-05 10:25:17,819 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-02-05 10:25:17,819 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 10:25:17,819 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:25:18,145 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:25:18,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:25:18,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292300203] [2025-02-05 10:25:18,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292300203] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:25:18,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700923860] [2025-02-05 10:25:18,146 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 10:25:18,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:25:18,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:25:18,149 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 10:25:18,155 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 10:25:18,192 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 22 statements into 2 equivalence classes. [2025-02-05 10:25:18,220 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-02-05 10:25:18,220 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 10:25:18,220 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:25:18,221 INFO L256 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-02-05 10:25:18,222 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:25:18,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-02-05 10:25:18,533 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-02-05 10:25:18,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2025-02-05 10:25:18,555 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 5 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:25:18,556 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:25:18,769 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2025-02-05 10:25:18,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2025-02-05 10:25:18,929 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:25:18,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700923860] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:25:18,929 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:25:18,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2025-02-05 10:25:18,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466234609] [2025-02-05 10:25:18,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:25:18,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-02-05 10:25:18,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:25:18,930 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-02-05 10:25:18,932 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=603, Unknown=0, NotChecked=0, Total=756 [2025-02-05 10:25:18,932 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand has 28 states, 28 states have (on average 2.1785714285714284) internal successors, (61), 28 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:25:19,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:25:19,422 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2025-02-05 10:25:19,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-05 10:25:19,422 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.1785714285714284) internal successors, (61), 28 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2025-02-05 10:25:19,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:25:19,423 INFO L225 Difference]: With dead ends: 46 [2025-02-05 10:25:19,424 INFO L226 Difference]: Without dead ends: 34 [2025-02-05 10:25:19,425 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=169, Invalid=643, Unknown=0, NotChecked=0, Total=812 [2025-02-05 10:25:19,426 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 6 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-05 10:25:19,426 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 64 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 184 Invalid, 1 Unknown, 0 Unchecked, 0.5s Time] [2025-02-05 10:25:19,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2025-02-05 10:25:19,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2025-02-05 10:25:19,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 33 states have internal predecessors, (40), 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 10:25:19,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2025-02-05 10:25:19,432 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 22 [2025-02-05 10:25:19,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:25:19,433 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2025-02-05 10:25:19,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.1785714285714284) internal successors, (61), 28 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:25:19,433 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2025-02-05 10:25:19,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-02-05 10:25:19,433 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:25:19,434 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2025-02-05 10:25:19,441 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-05 10:25:19,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:25:19,637 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:25:19,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:25:19,637 INFO L85 PathProgramCache]: Analyzing trace with hash 905654006, now seen corresponding path program 5 times [2025-02-05 10:25:19,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:25:19,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960183269] [2025-02-05 10:25:19,638 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 10:25:19,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:25:19,652 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 24 statements into 6 equivalence classes. [2025-02-05 10:25:19,670 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 24 of 24 statements. [2025-02-05 10:25:19,673 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-02-05 10:25:19,674 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:25:20,017 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:25:20,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:25:20,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960183269] [2025-02-05 10:25:20,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960183269] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:25:20,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674552938] [2025-02-05 10:25:20,018 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 10:25:20,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:25:20,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:25:20,022 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 10:25:20,024 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 10:25:20,055 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 24 statements into 6 equivalence classes. [2025-02-05 10:25:20,074 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 24 of 24 statements. [2025-02-05 10:25:20,074 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-02-05 10:25:20,074 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:25:20,075 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-02-05 10:25:20,077 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:25:20,150 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-05 10:25:20,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-05 10:25:20,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2025-02-05 10:25:20,272 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-02-05 10:25:20,285 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:25:20,285 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:25:20,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2025-02-05 10:25:20,398 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 110 [2025-02-05 10:25:20,491 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:25:20,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674552938] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:25:20,491 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:25:20,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 31 [2025-02-05 10:25:20,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416533182] [2025-02-05 10:25:20,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:25:20,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-02-05 10:25:20,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:25:20,492 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-02-05 10:25:20,492 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=829, Unknown=0, NotChecked=0, Total=930 [2025-02-05 10:25:20,492 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand has 31 states, 31 states have (on average 2.161290322580645) internal successors, (67), 31 states have internal predecessors, (67), 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 10:25:20,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:25:20,691 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2025-02-05 10:25:20,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-05 10:25:20,692 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.161290322580645) internal successors, (67), 31 states have internal predecessors, (67), 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 24 [2025-02-05 10:25:20,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:25:20,692 INFO L225 Difference]: With dead ends: 40 [2025-02-05 10:25:20,692 INFO L226 Difference]: Without dead ends: 38 [2025-02-05 10:25:20,693 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=148, Invalid=1042, Unknown=0, NotChecked=0, Total=1190 [2025-02-05 10:25:20,693 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 73 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 10:25:20,693 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 100 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 10:25:20,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2025-02-05 10:25:20,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2025-02-05 10:25:20,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.1944444444444444) internal successors, (43), 36 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:25:20,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2025-02-05 10:25:20,697 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 24 [2025-02-05 10:25:20,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:25:20,697 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2025-02-05 10:25:20,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.161290322580645) internal successors, (67), 31 states have internal predecessors, (67), 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 10:25:20,697 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2025-02-05 10:25:20,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-02-05 10:25:20,698 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:25:20,698 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2025-02-05 10:25:20,704 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-02-05 10:25:20,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:25:20,899 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:25:20,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:25:20,899 INFO L85 PathProgramCache]: Analyzing trace with hash -645187915, now seen corresponding path program 6 times [2025-02-05 10:25:20,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:25:20,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084391141] [2025-02-05 10:25:20,899 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 10:25:20,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:25:20,904 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 27 statements into 6 equivalence classes. [2025-02-05 10:25:20,919 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) and asserted 27 of 27 statements. [2025-02-05 10:25:20,919 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2025-02-05 10:25:20,919 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:25:21,297 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:25:21,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:25:21,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084391141] [2025-02-05 10:25:21,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084391141] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:25:21,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065453003] [2025-02-05 10:25:21,300 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 10:25:21,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:25:21,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:25:21,303 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 10:25:21,309 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 10:25:21,355 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 27 statements into 6 equivalence classes. [2025-02-05 10:25:21,382 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) and asserted 27 of 27 statements. [2025-02-05 10:25:21,382 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2025-02-05 10:25:21,382 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:25:21,383 INFO L256 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-02-05 10:25:21,387 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:25:21,501 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-05 10:25:21,564 INFO L349 Elim1Store]: treesize reduction 19, result has 36.7 percent of original size [2025-02-05 10:25:21,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 26 [2025-02-05 10:25:22,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-05 10:25:22,199 INFO L349 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2025-02-05 10:25:22,199 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 32 [2025-02-05 10:25:22,217 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:25:22,217 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:25:22,476 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 25 [2025-02-05 10:25:22,496 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 50 [2025-02-05 10:25:22,715 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 7 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:25:22,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1065453003] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:25:22,715 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:25:22,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 14] total 36 [2025-02-05 10:25:22,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729421564] [2025-02-05 10:25:22,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:25:22,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2025-02-05 10:25:22,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:25:22,716 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2025-02-05 10:25:22,717 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=1043, Unknown=0, NotChecked=0, Total=1260 [2025-02-05 10:25:22,717 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 36 states have internal predecessors, (76), 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 10:25:23,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:25:23,612 INFO L93 Difference]: Finished difference Result 65 states and 72 transitions. [2025-02-05 10:25:23,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-02-05 10:25:23,612 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 36 states have internal predecessors, (76), 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 27 [2025-02-05 10:25:23,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:25:23,613 INFO L225 Difference]: With dead ends: 65 [2025-02-05 10:25:23,613 INFO L226 Difference]: Without dead ends: 37 [2025-02-05 10:25:23,614 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=413, Invalid=1939, Unknown=0, NotChecked=0, Total=2352 [2025-02-05 10:25:23,614 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 28 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-05 10:25:23,614 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 83 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-05 10:25:23,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2025-02-05 10:25:23,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2025-02-05 10:25:23,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 36 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 10:25:23,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2025-02-05 10:25:23,618 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 27 [2025-02-05 10:25:23,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:25:23,618 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2025-02-05 10:25:23,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 36 states have internal predecessors, (76), 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 10:25:23,618 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2025-02-05 10:25:23,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-02-05 10:25:23,619 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:25:23,619 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2025-02-05 10:25:23,625 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-05 10:25:23,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-02-05 10:25:23,819 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:25:23,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:25:23,820 INFO L85 PathProgramCache]: Analyzing trace with hash -631404425, now seen corresponding path program 7 times [2025-02-05 10:25:23,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:25:23,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978299170] [2025-02-05 10:25:23,820 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-05 10:25:23,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:25:23,826 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-02-05 10:25:23,836 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-02-05 10:25:23,836 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:25:23,836 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:25:24,193 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:25:24,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:25:24,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978299170] [2025-02-05 10:25:24,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978299170] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:25:24,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636786262] [2025-02-05 10:25:24,194 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-05 10:25:24,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:25:24,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:25:24,196 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 10:25:24,198 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 10:25:24,235 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-02-05 10:25:24,252 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-02-05 10:25:24,252 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:25:24,252 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:25:24,253 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 37 conjuncts are in the unsatisfiable core [2025-02-05 10:25:24,256 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:25:24,375 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-05 10:25:24,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-05 10:25:24,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2025-02-05 10:25:24,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-05 10:25:24,436 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2025-02-05 10:25:24,568 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-02-05 10:25:24,583 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 2 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:25:24,583 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:25:24,796 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 30 [2025-02-05 10:25:24,799 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 486 treesize of output 470 [2025-02-05 10:25:24,947 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:25:24,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636786262] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:25:24,947 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:25:24,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 40 [2025-02-05 10:25:24,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914459376] [2025-02-05 10:25:24,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:25:24,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2025-02-05 10:25:24,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:25:24,948 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2025-02-05 10:25:24,949 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1414, Unknown=0, NotChecked=0, Total=1560 [2025-02-05 10:25:24,949 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand has 40 states, 40 states have (on average 2.2) internal successors, (88), 40 states have internal predecessors, (88), 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 10:25:25,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:25:25,223 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2025-02-05 10:25:25,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-05 10:25:25,223 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.2) internal successors, (88), 40 states have internal predecessors, (88), 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 31 [2025-02-05 10:25:25,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:25:25,224 INFO L225 Difference]: With dead ends: 43 [2025-02-05 10:25:25,224 INFO L226 Difference]: Without dead ends: 41 [2025-02-05 10:25:25,224 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 482 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=224, Invalid=1846, Unknown=0, NotChecked=0, Total=2070 [2025-02-05 10:25:25,225 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 31 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 10:25:25,227 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 149 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 10:25:25,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2025-02-05 10:25:25,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2025-02-05 10:25:25,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 39 states have internal predecessors, (44), 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 10:25:25,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2025-02-05 10:25:25,234 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 31 [2025-02-05 10:25:25,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:25:25,235 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2025-02-05 10:25:25,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.2) internal successors, (88), 40 states have internal predecessors, (88), 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 10:25:25,235 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2025-02-05 10:25:25,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-02-05 10:25:25,236 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:25:25,236 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 5, 4, 4, 1, 1, 1, 1, 1, 1] [2025-02-05 10:25:25,242 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-05 10:25:25,437 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,SelfDestructingSolverStorable12 [2025-02-05 10:25:25,437 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:25:25,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:25:25,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1788404116, now seen corresponding path program 8 times [2025-02-05 10:25:25,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:25:25,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872369020] [2025-02-05 10:25:25,437 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 10:25:25,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:25:25,450 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 34 statements into 2 equivalence classes. [2025-02-05 10:25:25,458 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 34 of 34 statements. [2025-02-05 10:25:25,458 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 10:25:25,459 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:25:25,771 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:25:25,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:25:25,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872369020] [2025-02-05 10:25:25,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872369020] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:25:25,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322628153] [2025-02-05 10:25:25,772 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 10:25:25,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:25:25,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:25:25,773 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 10:25:25,776 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 10:25:25,813 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 34 statements into 2 equivalence classes. [2025-02-05 10:25:25,829 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 34 of 34 statements. [2025-02-05 10:25:25,830 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 10:25:25,830 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:25:25,831 INFO L256 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 39 conjuncts are in the unsatisfiable core [2025-02-05 10:25:25,832 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:25:25,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-05 10:25:25,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-05 10:25:25,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2025-02-05 10:25:26,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-02-05 10:25:26,173 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:25:26,174 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:25:26,358 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2025-02-05 10:25:26,360 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 50 [2025-02-05 10:25:26,549 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:25:26,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322628153] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:25:26,549 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:25:26,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 43 [2025-02-05 10:25:26,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177636151] [2025-02-05 10:25:26,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:25:26,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2025-02-05 10:25:26,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:25:26,550 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2025-02-05 10:25:26,550 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1662, Unknown=0, NotChecked=0, Total=1806 [2025-02-05 10:25:26,550 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand has 43 states, 43 states have (on average 2.255813953488372) internal successors, (97), 43 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 10:25:26,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:25:26,875 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2025-02-05 10:25:26,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-05 10:25:26,875 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.255813953488372) internal successors, (97), 43 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 34 [2025-02-05 10:25:26,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:25:26,875 INFO L225 Difference]: With dead ends: 46 [2025-02-05 10:25:26,875 INFO L226 Difference]: Without dead ends: 44 [2025-02-05 10:25:26,876 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=218, Invalid=2232, Unknown=0, NotChecked=0, Total=2450 [2025-02-05 10:25:26,876 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 59 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 10:25:26,877 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 169 Invalid, 558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 556 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 10:25:26,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2025-02-05 10:25:26,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2025-02-05 10:25:26,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.119047619047619) internal successors, (47), 42 states have internal predecessors, (47), 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 10:25:26,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2025-02-05 10:25:26,881 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 34 [2025-02-05 10:25:26,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:25:26,882 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2025-02-05 10:25:26,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.255813953488372) internal successors, (97), 43 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 10:25:26,882 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2025-02-05 10:25:26,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-02-05 10:25:26,882 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:25:26,882 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 6, 5, 5, 1, 1, 1, 1, 1, 1] [2025-02-05 10:25:26,888 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 10:25:27,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:25:27,083 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:25:27,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:25:27,084 INFO L85 PathProgramCache]: Analyzing trace with hash -721414313, now seen corresponding path program 9 times [2025-02-05 10:25:27,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:25:27,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407823070] [2025-02-05 10:25:27,084 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 10:25:27,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:25:27,090 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 37 statements into 8 equivalence classes. [2025-02-05 10:25:27,112 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) and asserted 37 of 37 statements. [2025-02-05 10:25:27,112 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2025-02-05 10:25:27,112 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:25:27,516 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 18 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:25:27,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:25:27,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407823070] [2025-02-05 10:25:27,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407823070] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:25:27,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758019417] [2025-02-05 10:25:27,516 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 10:25:27,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:25:27,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:25:27,518 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 10:25:27,522 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 10:25:27,561 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 37 statements into 8 equivalence classes. [2025-02-05 10:25:27,598 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) and asserted 37 of 37 statements. [2025-02-05 10:25:27,599 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2025-02-05 10:25:27,599 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:25:27,600 INFO L256 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-02-05 10:25:27,605 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:25:27,857 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-02-05 10:25:28,465 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-02-05 10:25:28,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2025-02-05 10:25:28,486 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 31 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:25:28,486 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:25:28,856 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2025-02-05 10:25:28,857 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2025-02-05 10:25:29,083 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 30 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:25:29,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758019417] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:25:29,083 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:25:29,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 18] total 48 [2025-02-05 10:25:29,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085295063] [2025-02-05 10:25:29,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:25:29,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2025-02-05 10:25:29,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:25:29,084 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2025-02-05 10:25:29,084 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=348, Invalid=1908, Unknown=0, NotChecked=0, Total=2256 [2025-02-05 10:25:29,084 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand has 48 states, 48 states have (on average 2.2083333333333335) internal successors, (106), 48 states have internal predecessors, (106), 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 10:25:29,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:25:29,436 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2025-02-05 10:25:29,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-02-05 10:25:29,436 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.2083333333333335) internal successors, (106), 48 states have internal predecessors, (106), 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 37 [2025-02-05 10:25:29,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:25:29,438 INFO L225 Difference]: With dead ends: 64 [2025-02-05 10:25:29,438 INFO L226 Difference]: Without dead ends: 43 [2025-02-05 10:25:29,439 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 772 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=470, Invalid=2500, Unknown=0, NotChecked=0, Total=2970 [2025-02-05 10:25:29,439 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 10:25:29,439 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 40 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 10:25:29,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2025-02-05 10:25:29,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2025-02-05 10:25:29,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.0952380952380953) internal successors, (46), 42 states have internal predecessors, (46), 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 10:25:29,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2025-02-05 10:25:29,445 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 37 [2025-02-05 10:25:29,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:25:29,445 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2025-02-05 10:25:29,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.2083333333333335) internal successors, (106), 48 states have internal predecessors, (106), 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 10:25:29,445 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2025-02-05 10:25:29,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-02-05 10:25:29,446 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:25:29,446 INFO L218 NwaCegarLoop]: trace histogram [9, 8, 6, 5, 5, 1, 1, 1, 1, 1, 1] [2025-02-05 10:25:29,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-02-05 10:25:29,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:25:29,648 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:25:29,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:25:29,648 INFO L85 PathProgramCache]: Analyzing trace with hash -878440168, now seen corresponding path program 10 times [2025-02-05 10:25:29,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:25:29,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302421335] [2025-02-05 10:25:29,648 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 10:25:29,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:25:29,657 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 39 statements into 2 equivalence classes. [2025-02-05 10:25:29,666 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 39 of 39 statements. [2025-02-05 10:25:29,666 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 10:25:29,666 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:25:30,009 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:25:30,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:25:30,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302421335] [2025-02-05 10:25:30,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302421335] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:25:30,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959514413] [2025-02-05 10:25:30,010 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 10:25:30,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:25:30,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:25:30,014 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 10:25:30,018 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 10:25:30,059 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 39 statements into 2 equivalence classes. [2025-02-05 10:25:30,103 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 39 of 39 statements. [2025-02-05 10:25:30,103 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 10:25:30,103 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:25:30,107 INFO L256 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-02-05 10:25:30,109 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:25:30,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-05 10:25:30,190 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2025-02-05 10:25:30,190 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 13 [2025-02-05 10:25:30,342 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2025-02-05 10:25:30,359 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:25:30,359 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:25:30,563 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2025-02-05 10:25:30,565 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 50 [2025-02-05 10:25:30,759 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:25:30,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [959514413] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:25:30,759 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:25:30,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2025-02-05 10:25:30,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006668204] [2025-02-05 10:25:30,760 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:25:30,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2025-02-05 10:25:30,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:25:30,760 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2025-02-05 10:25:30,761 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=1516, Unknown=0, NotChecked=0, Total=1640 [2025-02-05 10:25:30,761 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand has 41 states, 41 states have (on average 2.341463414634146) internal successors, (96), 41 states have internal predecessors, (96), 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 10:25:31,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:25:31,122 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2025-02-05 10:25:31,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-05 10:25:31,122 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.341463414634146) internal successors, (96), 41 states have internal predecessors, (96), 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 39 [2025-02-05 10:25:31,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:25:31,122 INFO L225 Difference]: With dead ends: 49 [2025-02-05 10:25:31,123 INFO L226 Difference]: Without dead ends: 47 [2025-02-05 10:25:31,123 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=197, Invalid=2059, Unknown=0, NotChecked=0, Total=2256 [2025-02-05 10:25:31,123 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 58 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 10:25:31,124 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 185 Invalid, 655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 653 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 10:25:31,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2025-02-05 10:25:31,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2025-02-05 10:25:31,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.0888888888888888) internal successors, (49), 45 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 10:25:31,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 49 transitions. [2025-02-05 10:25:31,128 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 49 transitions. Word has length 39 [2025-02-05 10:25:31,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:25:31,128 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 49 transitions. [2025-02-05 10:25:31,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.341463414634146) internal successors, (96), 41 states have internal predecessors, (96), 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 10:25:31,129 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 49 transitions. [2025-02-05 10:25:31,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2025-02-05 10:25:31,129 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:25:31,129 INFO L218 NwaCegarLoop]: trace histogram [9, 8, 7, 6, 6, 1, 1, 1, 1, 1, 1] [2025-02-05 10:25:31,135 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-02-05 10:25:31,331 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,SelfDestructingSolverStorable15 [2025-02-05 10:25:31,331 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:25:31,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:25:31,332 INFO L85 PathProgramCache]: Analyzing trace with hash -374437549, now seen corresponding path program 11 times [2025-02-05 10:25:31,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:25:31,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657166702] [2025-02-05 10:25:31,332 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 10:25:31,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:25:31,337 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 42 statements into 9 equivalence classes. [2025-02-05 10:25:31,364 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) and asserted 42 of 42 statements. [2025-02-05 10:25:31,365 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2025-02-05 10:25:31,365 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:25:31,744 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:25:31,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:25:31,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657166702] [2025-02-05 10:25:31,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657166702] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:25:31,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884819065] [2025-02-05 10:25:31,745 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 10:25:31,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:25:31,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:25:31,750 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 10:25:31,756 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 10:25:31,814 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 42 statements into 9 equivalence classes. [2025-02-05 10:25:31,869 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) and asserted 42 of 42 statements. [2025-02-05 10:25:31,869 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2025-02-05 10:25:31,869 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:25:31,871 INFO L256 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-02-05 10:25:31,873 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:25:32,140 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-05 10:25:32,435 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-02-05 10:25:32,457 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:25:32,457 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:25:32,698 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2025-02-05 10:25:32,700 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2025-02-05 10:25:32,982 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:25:32,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884819065] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:25:32,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:25:32,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 52 [2025-02-05 10:25:32,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640904176] [2025-02-05 10:25:32,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:25:32,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2025-02-05 10:25:32,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:25:32,984 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2025-02-05 10:25:32,984 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=2481, Unknown=0, NotChecked=0, Total=2652 [2025-02-05 10:25:32,985 INFO L87 Difference]: Start difference. First operand 46 states and 49 transitions. Second operand has 52 states, 52 states have (on average 2.326923076923077) internal successors, (121), 52 states have internal predecessors, (121), 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 10:25:33,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:25:33,400 INFO L93 Difference]: Finished difference Result 75 states and 78 transitions. [2025-02-05 10:25:33,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-02-05 10:25:33,402 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.326923076923077) internal successors, (121), 52 states have internal predecessors, (121), 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 42 [2025-02-05 10:25:33,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:25:33,402 INFO L225 Difference]: With dead ends: 75 [2025-02-05 10:25:33,402 INFO L226 Difference]: Without dead ends: 73 [2025-02-05 10:25:33,403 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=181, Invalid=2575, Unknown=0, NotChecked=0, Total=2756 [2025-02-05 10:25:33,403 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 10 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 1089 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 1089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-05 10:25:33,403 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 434 Invalid, 1089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1089 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-05 10:25:33,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2025-02-05 10:25:33,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 50. [2025-02-05 10:25:33,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.0816326530612246) internal successors, (53), 49 states have internal predecessors, (53), 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 10:25:33,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2025-02-05 10:25:33,413 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 42 [2025-02-05 10:25:33,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:25:33,413 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2025-02-05 10:25:33,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.326923076923077) internal successors, (121), 52 states have internal predecessors, (121), 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 10:25:33,413 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2025-02-05 10:25:33,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2025-02-05 10:25:33,413 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:25:33,413 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 7, 6, 6, 1, 1, 1, 1, 1, 1] [2025-02-05 10:25:33,419 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 10:25:33,614 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,SelfDestructingSolverStorable16 [2025-02-05 10:25:33,614 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:25:33,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:25:33,615 INFO L85 PathProgramCache]: Analyzing trace with hash -789217230, now seen corresponding path program 12 times [2025-02-05 10:25:33,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:25:33,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315423062] [2025-02-05 10:25:33,615 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 10:25:33,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:25:33,622 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 44 statements into 10 equivalence classes. [2025-02-05 10:25:33,646 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) and asserted 44 of 44 statements. [2025-02-05 10:25:33,646 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2025-02-05 10:25:33,646 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:25:34,066 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:25:34,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:25:34,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315423062] [2025-02-05 10:25:34,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315423062] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:25:34,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944178084] [2025-02-05 10:25:34,067 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 10:25:34,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:25:34,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:25:34,070 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 10:25:34,074 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 10:25:34,149 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 44 statements into 10 equivalence classes. [2025-02-05 10:25:34,222 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) and asserted 44 of 44 statements. [2025-02-05 10:25:34,223 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2025-02-05 10:25:34,223 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:25:34,227 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 55 conjuncts are in the unsatisfiable core [2025-02-05 10:25:34,230 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:25:34,297 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-05 10:25:34,329 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2025-02-05 10:25:34,330 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 13 [2025-02-05 10:25:34,595 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2025-02-05 10:25:34,632 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:25:34,632 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:25:34,912 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2025-02-05 10:25:34,914 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 50 [2025-02-05 10:25:35,214 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:25:35,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944178084] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:25:35,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:25:35,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 21, 21] total 48 [2025-02-05 10:25:35,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683340769] [2025-02-05 10:25:35,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:25:35,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2025-02-05 10:25:35,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:25:35,215 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2025-02-05 10:25:35,216 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=2103, Unknown=0, NotChecked=0, Total=2256 [2025-02-05 10:25:35,216 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand has 48 states, 48 states have (on average 2.2708333333333335) internal successors, (109), 48 states have internal predecessors, (109), 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 10:25:35,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:25:35,859 INFO L93 Difference]: Finished difference Result 73 states and 76 transitions. [2025-02-05 10:25:35,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-02-05 10:25:35,859 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.2708333333333335) internal successors, (109), 48 states have internal predecessors, (109), 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 44 [2025-02-05 10:25:35,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:25:35,860 INFO L225 Difference]: With dead ends: 73 [2025-02-05 10:25:35,860 INFO L226 Difference]: Without dead ends: 71 [2025-02-05 10:25:35,861 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 558 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=249, Invalid=2943, Unknown=0, NotChecked=0, Total=3192 [2025-02-05 10:25:35,862 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 31 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 1094 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 1095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1094 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-05 10:25:35,862 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 279 Invalid, 1095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1094 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-05 10:25:35,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2025-02-05 10:25:35,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 49. [2025-02-05 10:25:35,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.0833333333333333) internal successors, (52), 48 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:25:35,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2025-02-05 10:25:35,871 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 44 [2025-02-05 10:25:35,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:25:35,871 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2025-02-05 10:25:35,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.2708333333333335) internal successors, (109), 48 states have internal predecessors, (109), 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 10:25:35,871 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2025-02-05 10:25:35,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-02-05 10:25:35,872 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:25:35,872 INFO L218 NwaCegarLoop]: trace histogram [9, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1] [2025-02-05 10:25:35,880 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 10:25:36,072 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,SelfDestructingSolverStorable17 [2025-02-05 10:25:36,073 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:25:36,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:25:36,073 INFO L85 PathProgramCache]: Analyzing trace with hash -838081736, now seen corresponding path program 13 times [2025-02-05 10:25:36,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:25:36,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488593691] [2025-02-05 10:25:36,073 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-05 10:25:36,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:25:36,080 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-02-05 10:25:36,084 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-02-05 10:25:36,084 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:25:36,084 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:25:36,273 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 58 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:25:36,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:25:36,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488593691] [2025-02-05 10:25:36,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488593691] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:25:36,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500628115] [2025-02-05 10:25:36,273 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-05 10:25:36,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:25:36,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:25:36,277 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 10:25:36,279 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 10:25:36,328 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-02-05 10:25:36,346 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-02-05 10:25:36,346 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:25:36,346 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:25:36,347 INFO L256 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-02-05 10:25:36,347 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:25:36,525 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 77 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:25:36,525 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:25:36,641 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 77 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:25:36,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500628115] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:25:36,641 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:25:36,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 29 [2025-02-05 10:25:36,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429649582] [2025-02-05 10:25:36,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:25:36,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-02-05 10:25:36,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:25:36,644 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-02-05 10:25:36,644 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=609, Unknown=0, NotChecked=0, Total=812 [2025-02-05 10:25:36,644 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand has 29 states, 29 states have (on average 2.586206896551724) internal successors, (75), 29 states have internal predecessors, (75), 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 10:25:36,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:25:36,705 INFO L93 Difference]: Finished difference Result 77 states and 80 transitions. [2025-02-05 10:25:36,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-02-05 10:25:36,706 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.586206896551724) internal successors, (75), 29 states have internal predecessors, (75), 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 45 [2025-02-05 10:25:36,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:25:36,710 INFO L225 Difference]: With dead ends: 77 [2025-02-05 10:25:36,710 INFO L226 Difference]: Without dead ends: 49 [2025-02-05 10:25:36,710 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 65 SyntacticMatches, 15 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 486 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=203, Invalid=609, Unknown=0, NotChecked=0, Total=812 [2025-02-05 10:25:36,710 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 10:25:36,711 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 88 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 10:25:36,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2025-02-05 10:25:36,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2025-02-05 10:25:36,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.0625) internal successors, (51), 48 states have internal predecessors, (51), 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 10:25:36,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions. [2025-02-05 10:25:36,723 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 45 [2025-02-05 10:25:36,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:25:36,723 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 51 transitions. [2025-02-05 10:25:36,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.586206896551724) internal successors, (75), 29 states have internal predecessors, (75), 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 10:25:36,723 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions. [2025-02-05 10:25:36,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2025-02-05 10:25:36,723 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:25:36,724 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 8, 7, 7, 1, 1, 1, 1, 1, 1] [2025-02-05 10:25:36,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-02-05 10:25:36,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:25:36,927 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:25:36,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:25:36,928 INFO L85 PathProgramCache]: Analyzing trace with hash -918647815, now seen corresponding path program 14 times [2025-02-05 10:25:36,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:25:36,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880355400] [2025-02-05 10:25:36,928 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 10:25:36,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:25:36,940 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 47 statements into 2 equivalence classes. [2025-02-05 10:25:36,955 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 47 of 47 statements. [2025-02-05 10:25:36,955 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 10:25:36,955 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:25:37,358 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 45 proven. 122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:25:37,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:25:37,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880355400] [2025-02-05 10:25:37,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880355400] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:25:37,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731507462] [2025-02-05 10:25:37,359 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 10:25:37,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:25:37,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:25:37,361 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 10:25:37,369 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 10:25:37,416 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 47 statements into 2 equivalence classes. [2025-02-05 10:25:37,437 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 47 of 47 statements. [2025-02-05 10:25:37,437 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 10:25:37,437 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:25:37,438 INFO L256 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-02-05 10:25:37,439 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:25:37,598 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-02-05 10:25:38,034 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-02-05 10:25:38,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2025-02-05 10:25:38,056 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 70 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:25:38,057 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:25:38,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2025-02-05 10:25:38,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2025-02-05 10:25:38,825 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 63 proven. 104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:25:38,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731507462] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:25:38,826 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:25:38,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 57 [2025-02-05 10:25:38,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620540035] [2025-02-05 10:25:38,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:25:38,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2025-02-05 10:25:38,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:25:38,826 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2025-02-05 10:25:38,827 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=2709, Unknown=0, NotChecked=0, Total=3192 [2025-02-05 10:25:38,827 INFO L87 Difference]: Start difference. First operand 49 states and 51 transitions. Second operand has 57 states, 57 states have (on average 2.3684210526315788) internal successors, (135), 57 states have internal predecessors, (135), 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 10:25:39,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:25:39,190 INFO L93 Difference]: Finished difference Result 77 states and 80 transitions. [2025-02-05 10:25:39,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-02-05 10:25:39,191 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 2.3684210526315788) internal successors, (135), 57 states have internal predecessors, (135), 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 47 [2025-02-05 10:25:39,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:25:39,191 INFO L225 Difference]: With dead ends: 77 [2025-02-05 10:25:39,191 INFO L226 Difference]: Without dead ends: 50 [2025-02-05 10:25:39,192 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 983 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=521, Invalid=2901, Unknown=0, NotChecked=0, Total=3422 [2025-02-05 10:25:39,192 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 4 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 838 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-05 10:25:39,192 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 225 Invalid, 838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 838 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-05 10:25:39,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2025-02-05 10:25:39,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2025-02-05 10:25:39,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.0612244897959184) internal successors, (52), 49 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:25:39,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2025-02-05 10:25:39,198 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 47 [2025-02-05 10:25:39,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:25:39,198 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2025-02-05 10:25:39,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 2.3684210526315788) internal successors, (135), 57 states have internal predecessors, (135), 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 10:25:39,198 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2025-02-05 10:25:39,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2025-02-05 10:25:39,198 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:25:39,198 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 8, 7, 7, 1, 1, 1, 1, 1, 1] [2025-02-05 10:25:39,204 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-02-05 10:25:39,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:25:39,399 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:25:39,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:25:39,399 INFO L85 PathProgramCache]: Analyzing trace with hash 648195027, now seen corresponding path program 2 times [2025-02-05 10:25:39,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:25:39,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485029225] [2025-02-05 10:25:39,400 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 10:25:39,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:25:39,407 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 48 statements into 2 equivalence classes. [2025-02-05 10:25:39,412 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 48 of 48 statements. [2025-02-05 10:25:39,412 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 10:25:39,412 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:25:39,530 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2025-02-05 10:25:39,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:25:39,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485029225] [2025-02-05 10:25:39,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485029225] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:25:39,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445564589] [2025-02-05 10:25:39,531 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 10:25:39,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:25:39,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:25:39,532 INFO L229 MonitoredProcess]: Starting monitored process 20 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 10:25:39,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-02-05 10:25:39,587 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 48 statements into 2 equivalence classes. [2025-02-05 10:25:39,607 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 48 of 48 statements. [2025-02-05 10:25:39,607 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 10:25:39,607 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:25:39,608 INFO L256 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-02-05 10:25:39,609 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:25:39,728 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2025-02-05 10:25:39,728 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:25:39,887 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2025-02-05 10:25:39,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445564589] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:25:39,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:25:39,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 36 [2025-02-05 10:25:39,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274233990] [2025-02-05 10:25:39,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:25:39,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2025-02-05 10:25:39,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:25:39,889 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2025-02-05 10:25:39,890 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=579, Invalid=753, Unknown=0, NotChecked=0, Total=1332 [2025-02-05 10:25:39,890 INFO L87 Difference]: Start difference. First operand 50 states and 52 transitions. Second operand has 37 states, 37 states have (on average 2.0) internal successors, (74), 36 states have internal predecessors, (74), 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 10:25:40,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:25:40,144 INFO L93 Difference]: Finished difference Result 411 states and 436 transitions. [2025-02-05 10:25:40,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-02-05 10:25:40,144 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.0) internal successors, (74), 36 states have internal predecessors, (74), 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 48 [2025-02-05 10:25:40,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:25:40,145 INFO L225 Difference]: With dead ends: 411 [2025-02-05 10:25:40,145 INFO L226 Difference]: Without dead ends: 385 [2025-02-05 10:25:40,146 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 745 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=876, Invalid=1380, Unknown=0, NotChecked=0, Total=2256 [2025-02-05 10:25:40,146 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 417 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 10:25:40,146 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 84 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 10:25:40,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2025-02-05 10:25:40,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 73. [2025-02-05 10:25:40,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.1944444444444444) internal successors, (86), 72 states have internal predecessors, (86), 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 10:25:40,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 86 transitions. [2025-02-05 10:25:40,155 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 86 transitions. Word has length 48 [2025-02-05 10:25:40,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:25:40,155 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 86 transitions. [2025-02-05 10:25:40,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.0) internal successors, (74), 36 states have internal predecessors, (74), 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 10:25:40,155 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 86 transitions. [2025-02-05 10:25:40,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2025-02-05 10:25:40,156 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:25:40,156 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 8, 7, 7, 1, 1, 1, 1, 1, 1] [2025-02-05 10:25:40,161 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-02-05 10:25:40,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:25:40,360 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:25:40,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:25:40,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1033238406, now seen corresponding path program 15 times [2025-02-05 10:25:40,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:25:40,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679861745] [2025-02-05 10:25:40,361 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 10:25:40,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:25:40,367 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 49 statements into 11 equivalence classes. [2025-02-05 10:25:40,382 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 49 of 49 statements. [2025-02-05 10:25:40,382 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-02-05 10:25:40,382 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:25:40,768 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:25:40,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:25:40,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679861745] [2025-02-05 10:25:40,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679861745] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:25:40,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949877304] [2025-02-05 10:25:40,768 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 10:25:40,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:25:40,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:25:40,770 INFO L229 MonitoredProcess]: Starting monitored process 21 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 10:25:40,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-02-05 10:25:40,828 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 49 statements into 11 equivalence classes. [2025-02-05 10:25:40,927 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 49 of 49 statements. [2025-02-05 10:25:40,927 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-02-05 10:25:40,927 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:25:40,929 INFO L256 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 55 conjuncts are in the unsatisfiable core [2025-02-05 10:25:40,931 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:25:41,016 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-05 10:25:41,045 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2025-02-05 10:25:41,045 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 13 [2025-02-05 10:25:41,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2025-02-05 10:25:41,246 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:25:41,246 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:25:41,540 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2025-02-05 10:25:41,543 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 110 [2025-02-05 10:25:41,810 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:25:41,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1949877304] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:25:41,810 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:25:41,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 51 [2025-02-05 10:25:41,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921803322] [2025-02-05 10:25:41,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:25:41,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2025-02-05 10:25:41,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:25:41,811 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2025-02-05 10:25:41,812 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=2394, Unknown=0, NotChecked=0, Total=2550 [2025-02-05 10:25:41,812 INFO L87 Difference]: Start difference. First operand 73 states and 86 transitions. Second operand has 51 states, 51 states have (on average 2.392156862745098) internal successors, (122), 51 states have internal predecessors, (122), 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 10:25:42,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:25:42,435 INFO L93 Difference]: Finished difference Result 79 states and 92 transitions. [2025-02-05 10:25:42,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-02-05 10:25:42,436 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.392156862745098) internal successors, (122), 51 states have internal predecessors, (122), 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 49 [2025-02-05 10:25:42,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:25:42,436 INFO L225 Difference]: With dead ends: 79 [2025-02-05 10:25:42,436 INFO L226 Difference]: Without dead ends: 77 [2025-02-05 10:25:42,437 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 594 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=248, Invalid=3292, Unknown=0, NotChecked=0, Total=3540 [2025-02-05 10:25:42,438 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 68 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 1189 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 1191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-05 10:25:42,438 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 328 Invalid, 1191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1189 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-05 10:25:42,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2025-02-05 10:25:42,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2025-02-05 10:25:42,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.1866666666666668) internal successors, (89), 75 states have internal predecessors, (89), 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 10:25:42,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 89 transitions. [2025-02-05 10:25:42,446 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 89 transitions. Word has length 49 [2025-02-05 10:25:42,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:25:42,446 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 89 transitions. [2025-02-05 10:25:42,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.392156862745098) internal successors, (122), 51 states have internal predecessors, (122), 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 10:25:42,447 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 89 transitions. [2025-02-05 10:25:42,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2025-02-05 10:25:42,447 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:25:42,447 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 9, 8, 8, 1, 1, 1, 1, 1, 1] [2025-02-05 10:25:42,453 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-02-05 10:25:42,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:25:42,647 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:25:42,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:25:42,648 INFO L85 PathProgramCache]: Analyzing trace with hash 826130097, now seen corresponding path program 16 times [2025-02-05 10:25:42,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:25:42,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632457673] [2025-02-05 10:25:42,648 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 10:25:42,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:25:42,654 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 52 statements into 2 equivalence classes. [2025-02-05 10:25:42,669 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 52 of 52 statements. [2025-02-05 10:25:42,670 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 10:25:42,670 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:25:43,137 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 84 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:25:43,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:25:43,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632457673] [2025-02-05 10:25:43,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632457673] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:25:43,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917222010] [2025-02-05 10:25:43,138 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 10:25:43,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:25:43,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:25:43,140 INFO L229 MonitoredProcess]: Starting monitored process 22 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 10:25:43,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-02-05 10:25:43,200 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 52 statements into 2 equivalence classes. [2025-02-05 10:25:43,341 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 52 of 52 statements. [2025-02-05 10:25:43,341 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 10:25:43,341 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:25:43,343 INFO L256 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-02-05 10:25:43,344 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:25:43,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-02-05 10:25:44,027 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-02-05 10:25:44,027 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2025-02-05 10:25:44,050 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 92 proven. 118 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:25:44,050 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:25:44,526 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2025-02-05 10:25:44,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2025-02-05 10:25:44,941 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 84 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:25:44,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1917222010] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:25:44,941 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:25:44,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 64 [2025-02-05 10:25:44,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981001628] [2025-02-05 10:25:44,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:25:44,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2025-02-05 10:25:44,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:25:44,942 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2025-02-05 10:25:44,943 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=690, Invalid=3342, Unknown=0, NotChecked=0, Total=4032 [2025-02-05 10:25:44,944 INFO L87 Difference]: Start difference. First operand 76 states and 89 transitions. Second operand has 64 states, 64 states have (on average 2.359375) internal successors, (151), 64 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:25:45,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:25:45,234 INFO L93 Difference]: Finished difference Result 106 states and 119 transitions. [2025-02-05 10:25:45,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-02-05 10:25:45,235 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.359375) internal successors, (151), 64 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2025-02-05 10:25:45,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:25:45,235 INFO L225 Difference]: With dead ends: 106 [2025-02-05 10:25:45,235 INFO L226 Difference]: Without dead ends: 76 [2025-02-05 10:25:45,236 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1710 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=724, Invalid=3436, Unknown=0, NotChecked=0, Total=4160 [2025-02-05 10:25:45,236 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 2 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-05 10:25:45,236 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 159 Invalid, 640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 640 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-05 10:25:45,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2025-02-05 10:25:45,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2025-02-05 10:25:45,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.1733333333333333) internal successors, (88), 75 states have internal predecessors, (88), 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 10:25:45,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 88 transitions. [2025-02-05 10:25:45,245 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 88 transitions. Word has length 52 [2025-02-05 10:25:45,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:25:45,245 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 88 transitions. [2025-02-05 10:25:45,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 2.359375) internal successors, (151), 64 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:25:45,245 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 88 transitions. [2025-02-05 10:25:45,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2025-02-05 10:25:45,245 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:25:45,245 INFO L218 NwaCegarLoop]: trace histogram [12, 11, 9, 8, 8, 1, 1, 1, 1, 1, 1] [2025-02-05 10:25:45,252 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-02-05 10:25:45,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2025-02-05 10:25:45,449 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:25:45,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:25:45,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1342117168, now seen corresponding path program 17 times [2025-02-05 10:25:45,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:25:45,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620080022] [2025-02-05 10:25:45,450 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 10:25:45,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:25:45,457 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 54 statements into 12 equivalence classes. [2025-02-05 10:25:45,501 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) and asserted 54 of 54 statements. [2025-02-05 10:25:45,501 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2025-02-05 10:25:45,501 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:25:45,987 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 0 proven. 232 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:25:45,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:25:45,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620080022] [2025-02-05 10:25:45,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620080022] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:25:45,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067488186] [2025-02-05 10:25:45,987 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 10:25:45,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:25:45,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:25:45,989 INFO L229 MonitoredProcess]: Starting monitored process 23 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 10:25:45,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-02-05 10:25:46,054 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 54 statements into 12 equivalence classes. [2025-02-05 10:25:46,184 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) and asserted 54 of 54 statements. [2025-02-05 10:25:46,184 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2025-02-05 10:25:46,184 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:25:46,185 INFO L256 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 59 conjuncts are in the unsatisfiable core [2025-02-05 10:25:46,187 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:25:46,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-05 10:25:46,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-05 10:25:46,448 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2025-02-05 10:25:46,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-02-05 10:25:46,752 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 0 proven. 232 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:25:46,753 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:25:47,081 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2025-02-05 10:25:47,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 110 [2025-02-05 10:25:47,388 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 0 proven. 232 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:25:47,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067488186] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:25:47,389 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:25:47,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 67 [2025-02-05 10:25:47,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888360630] [2025-02-05 10:25:47,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:25:47,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2025-02-05 10:25:47,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:25:47,389 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2025-02-05 10:25:47,390 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=4195, Unknown=0, NotChecked=0, Total=4422 [2025-02-05 10:25:47,390 INFO L87 Difference]: Start difference. First operand 76 states and 88 transitions. Second operand has 67 states, 67 states have (on average 2.343283582089552) internal successors, (157), 67 states have internal predecessors, (157), 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 10:25:48,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:25:48,004 INFO L93 Difference]: Finished difference Result 82 states and 94 transitions. [2025-02-05 10:25:48,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-02-05 10:25:48,004 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 2.343283582089552) internal successors, (157), 67 states have internal predecessors, (157), 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 54 [2025-02-05 10:25:48,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:25:48,005 INFO L225 Difference]: With dead ends: 82 [2025-02-05 10:25:48,005 INFO L226 Difference]: Without dead ends: 80 [2025-02-05 10:25:48,005 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1273 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=340, Invalid=5512, Unknown=0, NotChecked=0, Total=5852 [2025-02-05 10:25:48,005 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 121 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 1568 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 1571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-05 10:25:48,006 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 424 Invalid, 1571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1568 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-05 10:25:48,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2025-02-05 10:25:48,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2025-02-05 10:25:48,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.1666666666666667) internal successors, (91), 78 states have internal predecessors, (91), 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 10:25:48,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 91 transitions. [2025-02-05 10:25:48,015 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 91 transitions. Word has length 54 [2025-02-05 10:25:48,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:25:48,015 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 91 transitions. [2025-02-05 10:25:48,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 2.343283582089552) internal successors, (157), 67 states have internal predecessors, (157), 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 10:25:48,016 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 91 transitions. [2025-02-05 10:25:48,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2025-02-05 10:25:48,016 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:25:48,016 INFO L218 NwaCegarLoop]: trace histogram [12, 11, 10, 9, 9, 1, 1, 1, 1, 1, 1] [2025-02-05 10:25:48,022 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2025-02-05 10:25:48,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2025-02-05 10:25:48,217 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:25:48,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:25:48,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1161120613, now seen corresponding path program 18 times [2025-02-05 10:25:48,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:25:48,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526452396] [2025-02-05 10:25:48,217 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 10:25:48,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:25:48,226 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 57 statements into 12 equivalence classes. [2025-02-05 10:25:48,261 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) and asserted 57 of 57 statements. [2025-02-05 10:25:48,261 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2025-02-05 10:25:48,261 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:25:48,829 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 84 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:25:48,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:25:48,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526452396] [2025-02-05 10:25:48,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526452396] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:25:48,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472764007] [2025-02-05 10:25:48,830 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 10:25:48,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:25:48,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:25:48,833 INFO L229 MonitoredProcess]: Starting monitored process 24 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 10:25:48,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-02-05 10:25:48,897 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 57 statements into 12 equivalence classes. [2025-02-05 10:25:49,169 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) and asserted 57 of 57 statements. [2025-02-05 10:25:49,170 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2025-02-05 10:25:49,170 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:25:49,172 INFO L256 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 58 conjuncts are in the unsatisfiable core [2025-02-05 10:25:49,173 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:25:49,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-02-05 10:25:50,054 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-02-05 10:25:50,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2025-02-05 10:25:50,083 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 112 proven. 146 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:25:50,083 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:25:50,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2025-02-05 10:25:50,736 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2025-02-05 10:25:51,252 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 105 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:25:51,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472764007] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:25:51,252 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:25:51,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 26, 26] total 71 [2025-02-05 10:25:51,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012168934] [2025-02-05 10:25:51,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:25:51,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2025-02-05 10:25:51,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:25:51,254 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2025-02-05 10:25:51,254 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=724, Invalid=4246, Unknown=0, NotChecked=0, Total=4970 [2025-02-05 10:25:51,254 INFO L87 Difference]: Start difference. First operand 79 states and 91 transitions. Second operand has 71 states, 71 states have (on average 2.323943661971831) internal successors, (165), 71 states have internal predecessors, (165), 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 10:25:51,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:25:51,840 INFO L93 Difference]: Finished difference Result 112 states and 124 transitions. [2025-02-05 10:25:51,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-02-05 10:25:51,840 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 2.323943661971831) internal successors, (165), 71 states have internal predecessors, (165), 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 57 [2025-02-05 10:25:51,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:25:51,841 INFO L225 Difference]: With dead ends: 112 [2025-02-05 10:25:51,841 INFO L226 Difference]: Without dead ends: 79 [2025-02-05 10:25:51,841 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1669 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=920, Invalid=5086, Unknown=0, NotChecked=0, Total=6006 [2025-02-05 10:25:51,842 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 2 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-05 10:25:51,842 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 120 Invalid, 911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 911 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-05 10:25:51,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2025-02-05 10:25:51,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2025-02-05 10:25:51,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.1538461538461537) internal successors, (90), 78 states have internal predecessors, (90), 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 10:25:51,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 90 transitions. [2025-02-05 10:25:51,853 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 90 transitions. Word has length 57 [2025-02-05 10:25:51,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:25:51,853 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 90 transitions. [2025-02-05 10:25:51,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 2.323943661971831) internal successors, (165), 71 states have internal predecessors, (165), 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 10:25:51,856 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 90 transitions. [2025-02-05 10:25:51,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2025-02-05 10:25:51,857 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:25:51,857 INFO L218 NwaCegarLoop]: trace histogram [13, 12, 10, 9, 9, 1, 1, 1, 1, 1, 1] [2025-02-05 10:25:51,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2025-02-05 10:25:52,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2025-02-05 10:25:52,058 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:25:52,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:25:52,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1208566748, now seen corresponding path program 19 times [2025-02-05 10:25:52,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:25:52,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480007465] [2025-02-05 10:25:52,059 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-05 10:25:52,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:25:52,067 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 59 statements into 1 equivalence classes. [2025-02-05 10:25:52,080 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 59 of 59 statements. [2025-02-05 10:25:52,080 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:25:52,080 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:25:52,649 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 282 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:25:52,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:25:52,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480007465] [2025-02-05 10:25:52,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480007465] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:25:52,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614349209] [2025-02-05 10:25:52,649 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-05 10:25:52,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:25:52,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:25:52,652 INFO L229 MonitoredProcess]: Starting monitored process 25 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 10:25:52,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-02-05 10:25:52,722 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 59 statements into 1 equivalence classes. [2025-02-05 10:25:52,749 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 59 of 59 statements. [2025-02-05 10:25:52,750 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:25:52,750 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:25:52,751 INFO L256 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 67 conjuncts are in the unsatisfiable core [2025-02-05 10:25:52,753 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:25:53,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-05 10:25:53,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-05 10:25:53,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2025-02-05 10:25:53,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-02-05 10:25:53,637 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 282 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:25:53,637 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:25:54,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2025-02-05 10:25:54,056 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 110 [2025-02-05 10:25:54,471 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 282 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:25:54,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614349209] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:25:54,471 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:25:54,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 73 [2025-02-05 10:25:54,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133942108] [2025-02-05 10:25:54,471 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:25:54,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2025-02-05 10:25:54,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:25:54,472 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2025-02-05 10:25:54,472 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=5007, Unknown=0, NotChecked=0, Total=5256 [2025-02-05 10:25:54,473 INFO L87 Difference]: Start difference. First operand 79 states and 90 transitions. Second operand has 73 states, 73 states have (on average 2.356164383561644) internal successors, (172), 73 states have internal predecessors, (172), 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 10:25:55,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:25:55,221 INFO L93 Difference]: Finished difference Result 85 states and 96 transitions. [2025-02-05 10:25:55,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-02-05 10:25:55,222 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 2.356164383561644) internal successors, (172), 73 states have internal predecessors, (172), 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 59 [2025-02-05 10:25:55,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:25:55,223 INFO L225 Difference]: With dead ends: 85 [2025-02-05 10:25:55,223 INFO L226 Difference]: Without dead ends: 83 [2025-02-05 10:25:55,223 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1513 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=378, Invalid=6762, Unknown=0, NotChecked=0, Total=7140 [2025-02-05 10:25:55,224 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 62 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 1878 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 1879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-05 10:25:55,224 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 514 Invalid, 1879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1878 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-05 10:25:55,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2025-02-05 10:25:55,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 82. [2025-02-05 10:25:55,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.1481481481481481) internal successors, (93), 81 states have internal predecessors, (93), 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 10:25:55,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 93 transitions. [2025-02-05 10:25:55,248 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 93 transitions. Word has length 59 [2025-02-05 10:25:55,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:25:55,249 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 93 transitions. [2025-02-05 10:25:55,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 2.356164383561644) internal successors, (172), 73 states have internal predecessors, (172), 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 10:25:55,249 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 93 transitions. [2025-02-05 10:25:55,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2025-02-05 10:25:55,249 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:25:55,249 INFO L218 NwaCegarLoop]: trace histogram [13, 12, 11, 10, 10, 1, 1, 1, 1, 1, 1] [2025-02-05 10:25:55,256 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2025-02-05 10:25:55,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2025-02-05 10:25:55,454 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:25:55,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:25:55,455 INFO L85 PathProgramCache]: Analyzing trace with hash -297979889, now seen corresponding path program 20 times [2025-02-05 10:25:55,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:25:55,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616439747] [2025-02-05 10:25:55,455 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 10:25:55,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:25:55,464 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 62 statements into 2 equivalence classes. [2025-02-05 10:25:55,472 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 62 of 62 statements. [2025-02-05 10:25:55,473 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 10:25:55,473 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:25:56,060 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 108 proven. 203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:25:56,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:25:56,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616439747] [2025-02-05 10:25:56,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616439747] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:25:56,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919310129] [2025-02-05 10:25:56,062 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 10:25:56,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:25:56,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:25:56,063 INFO L229 MonitoredProcess]: Starting monitored process 26 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 10:25:56,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-02-05 10:25:56,140 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 62 statements into 2 equivalence classes. [2025-02-05 10:25:56,167 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 62 of 62 statements. [2025-02-05 10:25:56,167 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 10:25:56,167 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:25:56,175 INFO L256 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 54 conjuncts are in the unsatisfiable core [2025-02-05 10:25:56,176 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:25:56,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-02-05 10:25:56,957 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-02-05 10:25:56,957 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2025-02-05 10:25:56,980 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 145 proven. 166 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:25:56,980 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:25:57,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2025-02-05 10:25:57,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2025-02-05 10:25:58,171 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 135 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:25:58,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919310129] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:25:58,172 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:25:58,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 75 [2025-02-05 10:25:58,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497704958] [2025-02-05 10:25:58,172 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:25:58,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2025-02-05 10:25:58,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:25:58,173 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2025-02-05 10:25:58,173 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=801, Invalid=4749, Unknown=0, NotChecked=0, Total=5550 [2025-02-05 10:25:58,173 INFO L87 Difference]: Start difference. First operand 82 states and 93 transitions. Second operand has 75 states, 75 states have (on average 2.4) internal successors, (180), 75 states have internal predecessors, (180), 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 10:25:58,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:25:58,671 INFO L93 Difference]: Finished difference Result 118 states and 129 transitions. [2025-02-05 10:25:58,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-02-05 10:25:58,671 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 2.4) internal successors, (180), 75 states have internal predecessors, (180), 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 10:25:58,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:25:58,672 INFO L225 Difference]: With dead ends: 118 [2025-02-05 10:25:58,672 INFO L226 Difference]: Without dead ends: 82 [2025-02-05 10:25:58,673 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1751 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=848, Invalid=5004, Unknown=0, NotChecked=0, Total=5852 [2025-02-05 10:25:58,673 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 4 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 1097 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 1097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-05 10:25:58,673 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 324 Invalid, 1097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1097 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-05 10:25:58,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2025-02-05 10:25:58,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2025-02-05 10:25:58,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.1358024691358024) internal successors, (92), 81 states have internal predecessors, (92), 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 10:25:58,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 92 transitions. [2025-02-05 10:25:58,683 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 92 transitions. Word has length 62 [2025-02-05 10:25:58,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:25:58,683 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 92 transitions. [2025-02-05 10:25:58,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 2.4) internal successors, (180), 75 states have internal predecessors, (180), 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 10:25:58,683 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 92 transitions. [2025-02-05 10:25:58,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2025-02-05 10:25:58,683 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:25:58,683 INFO L218 NwaCegarLoop]: trace histogram [14, 13, 11, 10, 10, 1, 1, 1, 1, 1, 1] [2025-02-05 10:25:58,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2025-02-05 10:25:58,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2025-02-05 10:25:58,884 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:25:58,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:25:58,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1806369134, now seen corresponding path program 21 times [2025-02-05 10:25:58,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:25:58,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732989901] [2025-02-05 10:25:58,885 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 10:25:58,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:25:58,893 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 64 statements into 14 equivalence classes. [2025-02-05 10:25:58,916 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) and asserted 64 of 64 statements. [2025-02-05 10:25:58,916 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2025-02-05 10:25:58,916 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:26:00,330 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 78 proven. 259 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:26:00,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:26:00,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732989901] [2025-02-05 10:26:00,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732989901] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:26:00,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964466869] [2025-02-05 10:26:00,331 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 10:26:00,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:26:00,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:26:00,333 INFO L229 MonitoredProcess]: Starting monitored process 27 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 10:26:00,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2025-02-05 10:26:00,413 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 64 statements into 14 equivalence classes. [2025-02-05 10:26:00,609 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) and asserted 64 of 64 statements. [2025-02-05 10:26:00,609 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2025-02-05 10:26:00,610 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:26:00,612 INFO L256 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 75 conjuncts are in the unsatisfiable core [2025-02-05 10:26:00,613 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:26:00,898 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-05 10:26:00,935 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2025-02-05 10:26:00,935 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 13 [2025-02-05 10:26:01,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2025-02-05 10:26:01,417 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 0 proven. 337 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:26:01,418 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:26:02,021 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2025-02-05 10:26:02,023 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 110 [2025-02-05 10:26:02,611 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 0 proven. 337 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:26:02,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964466869] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:26:02,612 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:26:02,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 29, 29] total 85 [2025-02-05 10:26:02,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058038202] [2025-02-05 10:26:02,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:26:02,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2025-02-05 10:26:02,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:26:02,613 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2025-02-05 10:26:02,614 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=560, Invalid=6580, Unknown=0, NotChecked=0, Total=7140 [2025-02-05 10:26:02,614 INFO L87 Difference]: Start difference. First operand 82 states and 92 transitions. Second operand has 85 states, 85 states have (on average 2.2) internal successors, (187), 85 states have internal predecessors, (187), 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 10:26:04,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:26:04,864 INFO L93 Difference]: Finished difference Result 125 states and 137 transitions. [2025-02-05 10:26:04,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2025-02-05 10:26:04,864 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 2.2) internal successors, (187), 85 states have internal predecessors, (187), 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 64 [2025-02-05 10:26:04,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:26:04,865 INFO L225 Difference]: With dead ends: 125 [2025-02-05 10:26:04,865 INFO L226 Difference]: Without dead ends: 86 [2025-02-05 10:26:04,866 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4635 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1029, Invalid=13013, Unknown=0, NotChecked=0, Total=14042 [2025-02-05 10:26:04,867 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 221 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 1847 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 1860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-02-05 10:26:04,867 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 379 Invalid, 1860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1847 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-02-05 10:26:04,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2025-02-05 10:26:04,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2025-02-05 10:26:04,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.119047619047619) internal successors, (94), 84 states have internal predecessors, (94), 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 10:26:04,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 94 transitions. [2025-02-05 10:26:04,878 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 94 transitions. Word has length 64 [2025-02-05 10:26:04,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:26:04,878 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 94 transitions. [2025-02-05 10:26:04,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 2.2) internal successors, (187), 85 states have internal predecessors, (187), 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 10:26:04,878 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 94 transitions. [2025-02-05 10:26:04,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-02-05 10:26:04,878 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:26:04,878 INFO L218 NwaCegarLoop]: trace histogram [15, 14, 12, 11, 11, 1, 1, 1, 1, 1, 1] [2025-02-05 10:26:04,885 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2025-02-05 10:26:05,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2025-02-05 10:26:05,083 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:26:05,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:26:05,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1764629698, now seen corresponding path program 22 times [2025-02-05 10:26:05,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:26:05,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153979124] [2025-02-05 10:26:05,083 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 10:26:05,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:26:05,092 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 69 statements into 2 equivalence classes. [2025-02-05 10:26:05,107 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 69 of 69 statements. [2025-02-05 10:26:05,107 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 10:26:05,107 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:26:05,741 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 0 proven. 397 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:26:05,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:26:05,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153979124] [2025-02-05 10:26:05,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153979124] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:26:05,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577120525] [2025-02-05 10:26:05,742 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 10:26:05,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:26:05,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:26:05,744 INFO L229 MonitoredProcess]: Starting monitored process 28 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 10:26:05,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2025-02-05 10:26:05,830 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 69 statements into 2 equivalence classes. [2025-02-05 10:26:06,054 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 69 of 69 statements. [2025-02-05 10:26:06,054 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 10:26:06,054 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:26:06,062 INFO L256 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 72 conjuncts are in the unsatisfiable core [2025-02-05 10:26:06,065 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:26:06,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-05 10:26:06,142 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2025-02-05 10:26:06,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 13 [2025-02-05 10:26:06,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2025-02-05 10:26:06,529 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 0 proven. 397 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:26:06,529 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:26:07,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2025-02-05 10:26:07,059 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 110 [2025-02-05 10:26:07,611 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 0 proven. 397 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:26:07,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577120525] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:26:07,612 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:26:07,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 71 [2025-02-05 10:26:07,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200323264] [2025-02-05 10:26:07,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:26:07,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2025-02-05 10:26:07,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:26:07,614 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2025-02-05 10:26:07,614 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=4750, Unknown=0, NotChecked=0, Total=4970 [2025-02-05 10:26:07,614 INFO L87 Difference]: Start difference. First operand 85 states and 94 transitions. Second operand has 71 states, 71 states have (on average 2.4507042253521125) internal successors, (174), 71 states have internal predecessors, (174), 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 10:26:08,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:26:08,587 INFO L93 Difference]: Finished difference Result 91 states and 100 transitions. [2025-02-05 10:26:08,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-02-05 10:26:08,588 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 2.4507042253521125) internal successors, (174), 71 states have internal predecessors, (174), 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 69 [2025-02-05 10:26:08,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:26:08,588 INFO L225 Difference]: With dead ends: 91 [2025-02-05 10:26:08,588 INFO L226 Difference]: Without dead ends: 89 [2025-02-05 10:26:08,589 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1158 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=353, Invalid=6619, Unknown=0, NotChecked=0, Total=6972 [2025-02-05 10:26:08,595 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 48 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 2506 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 644 SdHoareTripleChecker+Invalid, 2507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-02-05 10:26:08,595 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 644 Invalid, 2507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2506 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-02-05 10:26:08,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2025-02-05 10:26:08,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 88. [2025-02-05 10:26:08,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.1149425287356323) internal successors, (97), 87 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 10:26:08,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 97 transitions. [2025-02-05 10:26:08,608 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 97 transitions. Word has length 69 [2025-02-05 10:26:08,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:26:08,608 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 97 transitions. [2025-02-05 10:26:08,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 2.4507042253521125) internal successors, (174), 71 states have internal predecessors, (174), 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 10:26:08,608 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 97 transitions. [2025-02-05 10:26:08,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-02-05 10:26:08,612 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:26:08,612 INFO L218 NwaCegarLoop]: trace histogram [15, 14, 13, 12, 12, 1, 1, 1, 1, 1, 1] [2025-02-05 10:26:08,620 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2025-02-05 10:26:08,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2025-02-05 10:26:08,812 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:26:08,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:26:08,812 INFO L85 PathProgramCache]: Analyzing trace with hash 317242733, now seen corresponding path program 23 times [2025-02-05 10:26:08,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:26:08,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163690714] [2025-02-05 10:26:08,813 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 10:26:08,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:26:08,822 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 72 statements into 15 equivalence classes. [2025-02-05 10:26:08,923 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) and asserted 72 of 72 statements. [2025-02-05 10:26:08,923 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2025-02-05 10:26:08,923 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:26:09,497 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:26:09,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:26:09,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163690714] [2025-02-05 10:26:09,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163690714] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:26:09,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494566030] [2025-02-05 10:26:09,498 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 10:26:09,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:26:09,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:26:09,500 INFO L229 MonitoredProcess]: Starting monitored process 29 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 10:26:09,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2025-02-05 10:26:09,599 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 72 statements into 15 equivalence classes. [2025-02-05 10:26:09,757 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) and asserted 72 of 72 statements. [2025-02-05 10:26:09,757 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2025-02-05 10:26:09,757 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:26:09,765 INFO L256 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 84 conjuncts are in the unsatisfiable core [2025-02-05 10:26:09,767 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:26:10,190 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-05 10:26:10,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-02-05 10:26:10,878 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:26:10,878 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:26:11,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2025-02-05 10:26:11,498 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2025-02-05 10:26:12,168 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:26:12,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494566030] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:26:12,169 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:26:12,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 32, 32] total 90 [2025-02-05 10:26:12,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680923536] [2025-02-05 10:26:12,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:26:12,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2025-02-05 10:26:12,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:26:12,170 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2025-02-05 10:26:12,170 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=311, Invalid=7699, Unknown=0, NotChecked=0, Total=8010 [2025-02-05 10:26:12,170 INFO L87 Difference]: Start difference. First operand 88 states and 97 transitions. Second operand has 90 states, 90 states have (on average 2.3444444444444446) internal successors, (211), 90 states have internal predecessors, (211), 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 10:26:13,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:26:13,296 INFO L93 Difference]: Finished difference Result 135 states and 144 transitions. [2025-02-05 10:26:13,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-02-05 10:26:13,296 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 2.3444444444444446) internal successors, (211), 90 states have internal predecessors, (211), 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 72 [2025-02-05 10:26:13,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:26:13,297 INFO L225 Difference]: With dead ends: 135 [2025-02-05 10:26:13,297 INFO L226 Difference]: Without dead ends: 133 [2025-02-05 10:26:13,297 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1767 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=321, Invalid=7869, Unknown=0, NotChecked=0, Total=8190 [2025-02-05 10:26:13,298 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 26 mSDsluCounter, 949 mSDsCounter, 0 mSdLazyCounter, 3204 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 970 SdHoareTripleChecker+Invalid, 3204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-02-05 10:26:13,298 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 970 Invalid, 3204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3204 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-02-05 10:26:13,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2025-02-05 10:26:13,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 92. [2025-02-05 10:26:13,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.10989010989011) internal successors, (101), 91 states have internal predecessors, (101), 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 10:26:13,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 101 transitions. [2025-02-05 10:26:13,311 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 101 transitions. Word has length 72 [2025-02-05 10:26:13,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:26:13,312 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 101 transitions. [2025-02-05 10:26:13,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 2.3444444444444446) internal successors, (211), 90 states have internal predecessors, (211), 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 10:26:13,312 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 101 transitions. [2025-02-05 10:26:13,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2025-02-05 10:26:13,312 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:26:13,312 INFO L218 NwaCegarLoop]: trace histogram [16, 15, 13, 12, 12, 1, 1, 1, 1, 1, 1] [2025-02-05 10:26:13,321 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2025-02-05 10:26:13,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:26:13,513 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:26:13,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:26:13,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1659085836, now seen corresponding path program 24 times [2025-02-05 10:26:13,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:26:13,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651477981] [2025-02-05 10:26:13,514 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 10:26:13,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:26:13,522 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 74 statements into 16 equivalence classes. [2025-02-05 10:26:13,548 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) and asserted 74 of 74 statements. [2025-02-05 10:26:13,548 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2025-02-05 10:26:13,548 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:26:14,309 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:26:14,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:26:14,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651477981] [2025-02-05 10:26:14,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651477981] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:26:14,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751156109] [2025-02-05 10:26:14,310 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 10:26:14,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:26:14,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:26:14,315 INFO L229 MonitoredProcess]: Starting monitored process 30 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 10:26:14,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2025-02-05 10:26:14,404 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 74 statements into 16 equivalence classes. [2025-02-05 10:26:14,899 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) and asserted 74 of 74 statements. [2025-02-05 10:26:14,900 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2025-02-05 10:26:14,900 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:26:14,904 INFO L256 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 85 conjuncts are in the unsatisfiable core [2025-02-05 10:26:14,906 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:26:14,985 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-05 10:26:15,024 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2025-02-05 10:26:15,024 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 13 [2025-02-05 10:26:15,478 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2025-02-05 10:26:15,504 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:26:15,504 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:26:16,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2025-02-05 10:26:16,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 110 [2025-02-05 10:26:16,668 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:26:16,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1751156109] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:26:16,668 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:26:16,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 33, 33] total 78 [2025-02-05 10:26:16,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538038747] [2025-02-05 10:26:16,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:26:16,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2025-02-05 10:26:16,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:26:16,670 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2025-02-05 10:26:16,670 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=5757, Unknown=0, NotChecked=0, Total=6006 [2025-02-05 10:26:16,670 INFO L87 Difference]: Start difference. First operand 92 states and 101 transitions. Second operand has 78 states, 78 states have (on average 2.3974358974358974) internal successors, (187), 78 states have internal predecessors, (187), 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 10:26:17,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:26:17,977 INFO L93 Difference]: Finished difference Result 133 states and 142 transitions. [2025-02-05 10:26:17,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-02-05 10:26:17,978 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 2.3974358974358974) internal successors, (187), 78 states have internal predecessors, (187), 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 74 [2025-02-05 10:26:17,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:26:17,979 INFO L225 Difference]: With dead ends: 133 [2025-02-05 10:26:17,979 INFO L226 Difference]: Without dead ends: 131 [2025-02-05 10:26:17,979 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1476 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=405, Invalid=8151, Unknown=0, NotChecked=0, Total=8556 [2025-02-05 10:26:17,979 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 161 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 2594 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 644 SdHoareTripleChecker+Invalid, 2597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-02-05 10:26:17,979 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 644 Invalid, 2597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2594 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-02-05 10:26:17,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2025-02-05 10:26:17,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 91. [2025-02-05 10:26:17,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.1111111111111112) internal successors, (100), 90 states have internal predecessors, (100), 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 10:26:17,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 100 transitions. [2025-02-05 10:26:17,993 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 100 transitions. Word has length 74 [2025-02-05 10:26:17,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:26:17,993 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 100 transitions. [2025-02-05 10:26:17,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 2.3974358974358974) internal successors, (187), 78 states have internal predecessors, (187), 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 10:26:17,993 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 100 transitions. [2025-02-05 10:26:17,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-02-05 10:26:17,994 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:26:17,994 INFO L218 NwaCegarLoop]: trace histogram [15, 14, 14, 13, 13, 1, 1, 1, 1, 1, 1] [2025-02-05 10:26:18,002 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2025-02-05 10:26:18,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,30 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:26:18,194 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:26:18,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:26:18,195 INFO L85 PathProgramCache]: Analyzing trace with hash 2051080414, now seen corresponding path program 25 times [2025-02-05 10:26:18,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:26:18,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865841971] [2025-02-05 10:26:18,195 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-05 10:26:18,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:26:18,204 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-02-05 10:26:18,209 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-02-05 10:26:18,210 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:26:18,210 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:26:18,567 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 223 proven. 247 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:26:18,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:26:18,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865841971] [2025-02-05 10:26:18,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865841971] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:26:18,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037135587] [2025-02-05 10:26:18,568 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-05 10:26:18,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:26:18,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:26:18,570 INFO L229 MonitoredProcess]: Starting monitored process 31 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 10:26:18,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2025-02-05 10:26:18,664 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-02-05 10:26:18,693 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-02-05 10:26:18,693 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:26:18,693 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:26:18,694 INFO L256 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-02-05 10:26:18,695 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:26:19,071 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 260 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:26:19,071 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:26:19,347 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 260 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:26:19,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037135587] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:26:19,348 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:26:19,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 47 [2025-02-05 10:26:19,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960880190] [2025-02-05 10:26:19,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:26:19,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2025-02-05 10:26:19,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:26:19,349 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2025-02-05 10:26:19,349 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=515, Invalid=1647, Unknown=0, NotChecked=0, Total=2162 [2025-02-05 10:26:19,349 INFO L87 Difference]: Start difference. First operand 91 states and 100 transitions. Second operand has 47 states, 47 states have (on average 2.617021276595745) internal successors, (123), 47 states have internal predecessors, (123), 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 10:26:19,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:26:19,488 INFO L93 Difference]: Finished difference Result 137 states and 146 transitions. [2025-02-05 10:26:19,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-02-05 10:26:19,488 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.617021276595745) internal successors, (123), 47 states have internal predecessors, (123), 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 75 [2025-02-05 10:26:19,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:26:19,489 INFO L225 Difference]: With dead ends: 137 [2025-02-05 10:26:19,489 INFO L226 Difference]: Without dead ends: 91 [2025-02-05 10:26:19,489 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 107 SyntacticMatches, 27 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1368 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=515, Invalid=1647, Unknown=0, NotChecked=0, Total=2162 [2025-02-05 10:26:19,491 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 10:26:19,491 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 162 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 10:26:19,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2025-02-05 10:26:19,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2025-02-05 10:26:19,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.1) internal successors, (99), 90 states have internal predecessors, (99), 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 10:26:19,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 99 transitions. [2025-02-05 10:26:19,511 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 99 transitions. Word has length 75 [2025-02-05 10:26:19,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:26:19,511 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 99 transitions. [2025-02-05 10:26:19,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.617021276595745) internal successors, (123), 47 states have internal predecessors, (123), 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 10:26:19,511 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 99 transitions. [2025-02-05 10:26:19,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2025-02-05 10:26:19,512 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:26:19,512 INFO L218 NwaCegarLoop]: trace histogram [16, 15, 14, 13, 13, 1, 1, 1, 1, 1, 1] [2025-02-05 10:26:19,519 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2025-02-05 10:26:19,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2025-02-05 10:26:19,716 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:26:19,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:26:19,716 INFO L85 PathProgramCache]: Analyzing trace with hash -656629281, now seen corresponding path program 26 times [2025-02-05 10:26:19,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:26:19,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168172313] [2025-02-05 10:26:19,717 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 10:26:19,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:26:19,728 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 77 statements into 2 equivalence classes. [2025-02-05 10:26:19,745 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 77 of 77 statements. [2025-02-05 10:26:19,746 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 10:26:19,746 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:26:20,506 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 198 proven. 302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:26:20,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:26:20,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168172313] [2025-02-05 10:26:20,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168172313] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:26:20,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656408506] [2025-02-05 10:26:20,507 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 10:26:20,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:26:20,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:26:20,511 INFO L229 MonitoredProcess]: Starting monitored process 32 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 10:26:20,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2025-02-05 10:26:20,619 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 77 statements into 2 equivalence classes. [2025-02-05 10:26:20,653 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 77 of 77 statements. [2025-02-05 10:26:20,654 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 10:26:20,654 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:26:20,658 INFO L256 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 66 conjuncts are in the unsatisfiable core [2025-02-05 10:26:20,660 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:26:20,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-02-05 10:26:21,804 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-02-05 10:26:21,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2025-02-05 10:26:21,832 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 247 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:26:21,833 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:26:22,691 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2025-02-05 10:26:22,693 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2025-02-05 10:26:23,420 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 234 proven. 266 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:26:23,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656408506] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:26:23,420 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:26:23,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 93 [2025-02-05 10:26:23,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369448626] [2025-02-05 10:26:23,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:26:23,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2025-02-05 10:26:23,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:26:23,423 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2025-02-05 10:26:23,423 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1200, Invalid=7356, Unknown=0, NotChecked=0, Total=8556 [2025-02-05 10:26:23,424 INFO L87 Difference]: Start difference. First operand 91 states and 99 transitions. Second operand has 93 states, 93 states have (on average 2.4193548387096775) internal successors, (225), 93 states have internal predecessors, (225), 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 10:26:23,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:26:23,906 INFO L93 Difference]: Finished difference Result 136 states and 144 transitions. [2025-02-05 10:26:23,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-02-05 10:26:23,906 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 2.4193548387096775) internal successors, (225), 93 states have internal predecessors, (225), 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 77 [2025-02-05 10:26:23,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:26:23,907 INFO L225 Difference]: With dead ends: 136 [2025-02-05 10:26:23,907 INFO L226 Difference]: Without dead ends: 91 [2025-02-05 10:26:23,907 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2735 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1256, Invalid=7674, Unknown=0, NotChecked=0, Total=8930 [2025-02-05 10:26:23,908 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 4 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 1233 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 1233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-05 10:26:23,908 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 230 Invalid, 1233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1233 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-05 10:26:23,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2025-02-05 10:26:23,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2025-02-05 10:26:23,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.0888888888888888) internal successors, (98), 90 states have internal predecessors, (98), 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 10:26:23,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 98 transitions. [2025-02-05 10:26:23,922 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 98 transitions. Word has length 77 [2025-02-05 10:26:23,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:26:23,922 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 98 transitions. [2025-02-05 10:26:23,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 93 states have (on average 2.4193548387096775) internal successors, (225), 93 states have internal predecessors, (225), 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 10:26:23,923 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 98 transitions. [2025-02-05 10:26:23,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-02-05 10:26:23,923 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:26:23,923 INFO L218 NwaCegarLoop]: trace histogram [17, 16, 14, 13, 13, 1, 1, 1, 1, 1, 1] [2025-02-05 10:26:23,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2025-02-05 10:26:24,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2025-02-05 10:26:24,125 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:26:24,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:26:24,125 INFO L85 PathProgramCache]: Analyzing trace with hash -15464800, now seen corresponding path program 27 times [2025-02-05 10:26:24,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:26:24,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399289065] [2025-02-05 10:26:24,126 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 10:26:24,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:26:24,135 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 79 statements into 17 equivalence classes. [2025-02-05 10:26:24,164 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) and asserted 79 of 79 statements. [2025-02-05 10:26:24,164 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2025-02-05 10:26:24,164 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:26:24,906 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 0 proven. 532 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:26:24,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:26:24,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399289065] [2025-02-05 10:26:24,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399289065] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:26:24,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868623842] [2025-02-05 10:26:24,906 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 10:26:24,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:26:24,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:26:24,909 INFO L229 MonitoredProcess]: Starting monitored process 33 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 10:26:24,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2025-02-05 10:26:25,013 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 79 statements into 17 equivalence classes. [2025-02-05 10:26:25,623 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) and asserted 79 of 79 statements. [2025-02-05 10:26:25,623 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2025-02-05 10:26:25,623 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:26:25,626 INFO L256 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 90 conjuncts are in the unsatisfiable core [2025-02-05 10:26:25,628 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:26:25,724 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-05 10:26:25,762 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2025-02-05 10:26:25,762 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 13 [2025-02-05 10:26:26,276 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2025-02-05 10:26:26,305 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 0 proven. 532 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:26:26,306 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:26:26,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2025-02-05 10:26:26,972 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 50 [2025-02-05 10:26:27,653 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 0 proven. 532 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:26:27,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868623842] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:26:27,653 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:26:27,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 35, 35] total 83 [2025-02-05 10:26:27,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496789800] [2025-02-05 10:26:27,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:26:27,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2025-02-05 10:26:27,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:26:27,655 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2025-02-05 10:26:27,655 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=6541, Unknown=0, NotChecked=0, Total=6806 [2025-02-05 10:26:27,655 INFO L87 Difference]: Start difference. First operand 91 states and 98 transitions. Second operand has 83 states, 83 states have (on average 2.4096385542168677) internal successors, (200), 83 states have internal predecessors, (200), 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 10:26:28,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:26:28,886 INFO L93 Difference]: Finished difference Result 97 states and 104 transitions. [2025-02-05 10:26:28,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-02-05 10:26:28,886 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 2.4096385542168677) internal successors, (200), 83 states have internal predecessors, (200), 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 79 [2025-02-05 10:26:28,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:26:28,887 INFO L225 Difference]: With dead ends: 97 [2025-02-05 10:26:28,887 INFO L226 Difference]: Without dead ends: 95 [2025-02-05 10:26:28,888 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1671 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=431, Invalid=9271, Unknown=0, NotChecked=0, Total=9702 [2025-02-05 10:26:28,888 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 113 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 3002 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 3004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-02-05 10:26:28,888 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 725 Invalid, 3004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3002 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-02-05 10:26:28,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2025-02-05 10:26:28,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 94. [2025-02-05 10:26:28,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.086021505376344) internal successors, (101), 93 states have internal predecessors, (101), 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 10:26:28,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 101 transitions. [2025-02-05 10:26:28,903 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 101 transitions. Word has length 79 [2025-02-05 10:26:28,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:26:28,903 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 101 transitions. [2025-02-05 10:26:28,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 2.4096385542168677) internal successors, (200), 83 states have internal predecessors, (200), 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 10:26:28,903 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 101 transitions. [2025-02-05 10:26:28,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2025-02-05 10:26:28,903 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:26:28,904 INFO L218 NwaCegarLoop]: trace histogram [17, 16, 15, 14, 14, 1, 1, 1, 1, 1, 1] [2025-02-05 10:26:28,911 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2025-02-05 10:26:29,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2025-02-05 10:26:29,108 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:26:29,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:26:29,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1149483317, now seen corresponding path program 28 times [2025-02-05 10:26:29,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:26:29,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454875094] [2025-02-05 10:26:29,109 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 10:26:29,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:26:29,118 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 82 statements into 2 equivalence classes. [2025-02-05 10:26:29,137 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 82 of 82 statements. [2025-02-05 10:26:29,137 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 10:26:29,137 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:26:29,953 INFO L134 CoverageAnalysis]: Checked inductivity of 573 backedges. 273 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:26:29,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:26:29,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454875094] [2025-02-05 10:26:29,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454875094] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:26:29,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897252098] [2025-02-05 10:26:29,953 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 10:26:29,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:26:29,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:26:29,956 INFO L229 MonitoredProcess]: Starting monitored process 34 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 10:26:29,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2025-02-05 10:26:30,081 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 82 statements into 2 equivalence classes. [2025-02-05 10:26:30,425 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 82 of 82 statements. [2025-02-05 10:26:30,426 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 10:26:30,426 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:26:30,429 INFO L256 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 70 conjuncts are in the unsatisfiable core [2025-02-05 10:26:30,431 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:26:30,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-02-05 10:26:31,690 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-02-05 10:26:31,690 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2025-02-05 10:26:31,717 INFO L134 CoverageAnalysis]: Checked inductivity of 573 backedges. 287 proven. 286 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:26:31,718 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:26:32,685 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2025-02-05 10:26:32,687 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2025-02-05 10:26:33,516 INFO L134 CoverageAnalysis]: Checked inductivity of 573 backedges. 273 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:26:33,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897252098] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:26:33,516 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:26:33,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 100 [2025-02-05 10:26:33,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095225812] [2025-02-05 10:26:33,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:26:33,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2025-02-05 10:26:33,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:26:33,518 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2025-02-05 10:26:33,518 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1623, Invalid=8277, Unknown=0, NotChecked=0, Total=9900 [2025-02-05 10:26:33,518 INFO L87 Difference]: Start difference. First operand 94 states and 101 transitions. Second operand has 100 states, 100 states have (on average 2.41) internal successors, (241), 100 states have internal predecessors, (241), 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 10:26:33,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:26:33,953 INFO L93 Difference]: Finished difference Result 142 states and 149 transitions. [2025-02-05 10:26:33,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2025-02-05 10:26:33,954 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 2.41) internal successors, (241), 100 states have internal predecessors, (241), 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 82 [2025-02-05 10:26:33,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:26:33,954 INFO L225 Difference]: With dead ends: 142 [2025-02-05 10:26:33,954 INFO L226 Difference]: Without dead ends: 94 [2025-02-05 10:26:33,955 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4374 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1675, Invalid=8425, Unknown=0, NotChecked=0, Total=10100 [2025-02-05 10:26:33,955 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 4 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 1070 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 1070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-05 10:26:33,955 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 178 Invalid, 1070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1070 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-05 10:26:33,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2025-02-05 10:26:33,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2025-02-05 10:26:33,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.075268817204301) internal successors, (100), 93 states have internal predecessors, (100), 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 10:26:33,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 100 transitions. [2025-02-05 10:26:33,971 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 100 transitions. Word has length 82 [2025-02-05 10:26:33,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:26:33,971 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 100 transitions. [2025-02-05 10:26:33,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 100 states have (on average 2.41) internal successors, (241), 100 states have internal predecessors, (241), 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 10:26:33,971 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 100 transitions. [2025-02-05 10:26:33,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2025-02-05 10:26:33,971 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:26:33,971 INFO L218 NwaCegarLoop]: trace histogram [18, 17, 15, 14, 14, 1, 1, 1, 1, 1, 1] [2025-02-05 10:26:33,979 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2025-02-05 10:26:34,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,34 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:26:34,172 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:26:34,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:26:34,173 INFO L85 PathProgramCache]: Analyzing trace with hash -845499734, now seen corresponding path program 29 times [2025-02-05 10:26:34,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:26:34,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684007516] [2025-02-05 10:26:34,173 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 10:26:34,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:26:34,183 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 84 statements into 18 equivalence classes. [2025-02-05 10:26:34,257 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) and asserted 84 of 84 statements. [2025-02-05 10:26:34,257 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2025-02-05 10:26:34,257 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:26:35,301 INFO L134 CoverageAnalysis]: Checked inductivity of 607 backedges. 0 proven. 607 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:26:35,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:26:35,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684007516] [2025-02-05 10:26:35,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684007516] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:26:35,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890890127] [2025-02-05 10:26:35,302 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 10:26:35,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:26:35,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:26:35,305 INFO L229 MonitoredProcess]: Starting monitored process 35 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 10:26:35,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2025-02-05 10:26:35,415 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 84 statements into 18 equivalence classes. [2025-02-05 10:26:35,572 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) and asserted 84 of 84 statements. [2025-02-05 10:26:35,572 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2025-02-05 10:26:35,572 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:26:35,580 INFO L256 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 89 conjuncts are in the unsatisfiable core [2025-02-05 10:26:35,582 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:26:36,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-05 10:26:36,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-05 10:26:36,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2025-02-05 10:26:36,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-02-05 10:26:36,808 INFO L134 CoverageAnalysis]: Checked inductivity of 607 backedges. 0 proven. 607 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:26:36,808 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:26:37,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2025-02-05 10:26:37,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 110 [2025-02-05 10:26:38,237 INFO L134 CoverageAnalysis]: Checked inductivity of 607 backedges. 0 proven. 607 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:26:38,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890890127] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:26:38,237 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:26:38,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 103 [2025-02-05 10:26:38,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983525328] [2025-02-05 10:26:38,238 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:26:38,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2025-02-05 10:26:38,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:26:38,239 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2025-02-05 10:26:38,239 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=10153, Unknown=0, NotChecked=0, Total=10506 [2025-02-05 10:26:38,239 INFO L87 Difference]: Start difference. First operand 94 states and 100 transitions. Second operand has 103 states, 103 states have (on average 2.3980582524271843) internal successors, (247), 103 states have internal predecessors, (247), 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 10:26:39,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:26:39,903 INFO L93 Difference]: Finished difference Result 100 states and 106 transitions. [2025-02-05 10:26:39,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2025-02-05 10:26:39,903 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 2.3980582524271843) internal successors, (247), 103 states have internal predecessors, (247), 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 84 [2025-02-05 10:26:39,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:26:39,904 INFO L225 Difference]: With dead ends: 100 [2025-02-05 10:26:39,904 INFO L226 Difference]: Without dead ends: 98 [2025-02-05 10:26:39,904 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3040 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=532, Invalid=13510, Unknown=0, NotChecked=0, Total=14042 [2025-02-05 10:26:39,905 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 108 mSDsluCounter, 1137 mSDsCounter, 0 mSdLazyCounter, 4242 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 1157 SdHoareTripleChecker+Invalid, 4244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-02-05 10:26:39,905 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 1157 Invalid, 4244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4242 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-02-05 10:26:39,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2025-02-05 10:26:39,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2025-02-05 10:26:39,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.0729166666666667) internal successors, (103), 96 states have internal predecessors, (103), 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 10:26:39,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 103 transitions. [2025-02-05 10:26:39,920 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 103 transitions. Word has length 84 [2025-02-05 10:26:39,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:26:39,920 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 103 transitions. [2025-02-05 10:26:39,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 2.3980582524271843) internal successors, (247), 103 states have internal predecessors, (247), 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 10:26:39,920 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 103 transitions. [2025-02-05 10:26:39,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2025-02-05 10:26:39,921 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:26:39,921 INFO L218 NwaCegarLoop]: trace histogram [18, 17, 16, 15, 15, 1, 1, 1, 1, 1, 1] [2025-02-05 10:26:39,932 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2025-02-05 10:26:40,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,35 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:26:40,122 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:26:40,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:26:40,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1701488257, now seen corresponding path program 30 times [2025-02-05 10:26:40,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:26:40,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070053339] [2025-02-05 10:26:40,123 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 10:26:40,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:26:40,143 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 87 statements into 18 equivalence classes. [2025-02-05 10:26:40,223 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) and asserted 87 of 87 statements. [2025-02-05 10:26:40,223 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2025-02-05 10:26:40,224 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:26:41,342 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 273 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:26:41,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:26:41,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070053339] [2025-02-05 10:26:41,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070053339] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:26:41,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761379063] [2025-02-05 10:26:41,342 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 10:26:41,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:26:41,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:26:41,344 INFO L229 MonitoredProcess]: Starting monitored process 36 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 10:26:41,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2025-02-05 10:26:41,466 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 87 statements into 18 equivalence classes. [2025-02-05 10:26:41,833 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) and asserted 87 of 87 statements. [2025-02-05 10:26:41,833 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2025-02-05 10:26:41,833 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:26:41,839 INFO L256 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 74 conjuncts are in the unsatisfiable core [2025-02-05 10:26:41,842 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:26:42,376 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-02-05 10:26:43,608 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-02-05 10:26:43,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2025-02-05 10:26:43,645 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 330 proven. 321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:26:43,645 INFO L312 TraceCheckSpWp]: Computing backward predicates...