./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-76.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-76.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8186639625ce393affc636d71862385ab5976ddbf9eeeac19c1ff9ee758a31c5 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 02:44:04,521 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 02:44:04,577 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-06 02:44:04,583 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 02:44:04,585 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 02:44:04,602 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 02:44:04,603 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 02:44:04,603 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 02:44:04,604 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 02:44:04,604 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 02:44:04,604 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 02:44:04,605 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 02:44:04,605 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 02:44:04,605 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 02:44:04,605 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 02:44:04,606 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 02:44:04,606 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 02:44:04,606 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 02:44:04,606 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 02:44:04,606 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 02:44:04,606 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 02:44:04,606 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 02:44:04,606 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 02:44:04,606 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 02:44:04,606 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 02:44:04,607 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 02:44:04,607 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 02:44:04,607 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 02:44:04,607 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 02:44:04,607 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 02:44:04,607 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 02:44:04,607 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 02:44:04,607 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 02:44:04,608 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 02:44:04,608 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 02:44:04,608 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 02:44:04,608 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 02:44:04,608 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 02:44:04,608 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 02:44:04,608 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 02:44:04,608 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 02:44:04,608 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 02:44:04,608 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 02:44:04,608 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 -> 8186639625ce393affc636d71862385ab5976ddbf9eeeac19c1ff9ee758a31c5 [2025-02-06 02:44:04,833 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 02:44:04,841 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 02:44:04,844 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 02:44:04,845 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 02:44:04,845 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 02:44:04,847 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-76.i [2025-02-06 02:44:05,967 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/534a6e1f5/9201e8f16a524858b756693b3140b833/FLAG3be00880b [2025-02-06 02:44:06,295 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 02:44:06,298 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-76.i [2025-02-06 02:44:06,312 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/534a6e1f5/9201e8f16a524858b756693b3140b833/FLAG3be00880b [2025-02-06 02:44:06,541 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/534a6e1f5/9201e8f16a524858b756693b3140b833 [2025-02-06 02:44:06,543 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 02:44:06,544 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 02:44:06,545 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 02:44:06,545 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 02:44:06,548 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 02:44:06,549 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 02:44:06" (1/1) ... [2025-02-06 02:44:06,550 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53da7ba1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:44:06, skipping insertion in model container [2025-02-06 02:44:06,550 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 02:44:06" (1/1) ... [2025-02-06 02:44:06,576 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 02:44:06,674 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/hardness-nfm22/hardness_operatoramount_amount500_file-76.i[916,929] [2025-02-06 02:44:06,811 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 02:44:06,823 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 02:44:06,830 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/hardness-nfm22/hardness_operatoramount_amount500_file-76.i[916,929] [2025-02-06 02:44:06,920 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 02:44:06,934 INFO L204 MainTranslator]: Completed translation [2025-02-06 02:44:06,934 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:44:06 WrapperNode [2025-02-06 02:44:06,935 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 02:44:06,936 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 02:44:06,936 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 02:44:06,936 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 02:44:06,943 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:44:06" (1/1) ... [2025-02-06 02:44:06,965 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:44:06" (1/1) ... [2025-02-06 02:44:07,050 INFO L138 Inliner]: procedures = 26, calls = 108, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 811 [2025-02-06 02:44:07,050 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 02:44:07,051 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 02:44:07,051 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 02:44:07,051 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 02:44:07,058 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:44:06" (1/1) ... [2025-02-06 02:44:07,059 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:44:06" (1/1) ... [2025-02-06 02:44:07,072 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:44:06" (1/1) ... [2025-02-06 02:44:07,163 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-02-06 02:44:07,163 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:44:06" (1/1) ... [2025-02-06 02:44:07,164 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:44:06" (1/1) ... [2025-02-06 02:44:07,191 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:44:06" (1/1) ... [2025-02-06 02:44:07,199 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:44:06" (1/1) ... [2025-02-06 02:44:07,209 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:44:06" (1/1) ... [2025-02-06 02:44:07,216 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:44:06" (1/1) ... [2025-02-06 02:44:07,226 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 02:44:07,228 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 02:44:07,228 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 02:44:07,228 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 02:44:07,229 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:44:06" (1/1) ... [2025-02-06 02:44:07,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 02:44:07,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:44:07,252 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) [2025-02-06 02:44:07,254 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 [2025-02-06 02:44:07,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 02:44:07,268 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-02-06 02:44:07,268 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-02-06 02:44:07,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 02:44:07,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 02:44:07,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 02:44:07,393 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 02:44:07,394 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 02:44:08,322 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L697: havoc property_#t~bitwise68#1;havoc property_#t~short69#1;havoc property_#t~bitwise70#1;havoc property_#t~short71#1;havoc property_#t~ite74#1;havoc property_#t~bitwise72#1;havoc property_#t~bitwise73#1;havoc property_#t~short75#1;havoc property_#t~bitwise76#1;havoc property_#t~ite78#1;havoc property_#t~bitwise77#1;havoc property_#t~short79#1; [2025-02-06 02:44:08,468 INFO L? ?]: Removed 73 outVars from TransFormulas that were not future-live. [2025-02-06 02:44:08,468 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 02:44:08,499 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 02:44:08,502 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 02:44:08,503 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 02:44:08 BoogieIcfgContainer [2025-02-06 02:44:08,503 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 02:44:08,505 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 02:44:08,505 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 02:44:08,508 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 02:44:08,509 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 02:44:06" (1/3) ... [2025-02-06 02:44:08,509 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@372a7e40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 02:44:08, skipping insertion in model container [2025-02-06 02:44:08,509 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:44:06" (2/3) ... [2025-02-06 02:44:08,509 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@372a7e40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 02:44:08, skipping insertion in model container [2025-02-06 02:44:08,509 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 02:44:08" (3/3) ... [2025-02-06 02:44:08,510 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-76.i [2025-02-06 02:44:08,520 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 02:44:08,523 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount500_file-76.i that has 2 procedures, 327 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-02-06 02:44:08,581 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 02:44:08,592 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;@29ff9b6e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 02:44:08,592 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-06 02:44:08,598 INFO L276 IsEmpty]: Start isEmpty. Operand has 327 states, 229 states have (on average 1.51528384279476) internal successors, (347), 230 states have internal predecessors, (347), 95 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 95 states have call predecessors, (95), 95 states have call successors, (95) [2025-02-06 02:44:08,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2025-02-06 02:44:08,631 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:44:08,632 INFO L218 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:44:08,633 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:44:08,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:44:08,637 INFO L85 PathProgramCache]: Analyzing trace with hash 2038127586, now seen corresponding path program 1 times [2025-02-06 02:44:08,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:44:08,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340354656] [2025-02-06 02:44:08,645 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:44:08,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:44:08,779 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 622 statements into 1 equivalence classes. [2025-02-06 02:44:08,821 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 622 of 622 statements. [2025-02-06 02:44:08,823 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:44:08,823 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:44:09,249 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 188 refuted. 0 times theorem prover too weak. 17672 trivial. 0 not checked. [2025-02-06 02:44:09,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:44:09,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340354656] [2025-02-06 02:44:09,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340354656] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:44:09,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994949709] [2025-02-06 02:44:09,251 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:44:09,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:44:09,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:44:09,253 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) [2025-02-06 02:44:09,255 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 [2025-02-06 02:44:09,443 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 622 statements into 1 equivalence classes. [2025-02-06 02:44:09,632 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 622 of 622 statements. [2025-02-06 02:44:09,632 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:44:09,632 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:44:09,639 INFO L256 TraceCheckSpWp]: Trace formula consists of 1468 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-02-06 02:44:09,657 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:44:09,716 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 17672 trivial. 0 not checked. [2025-02-06 02:44:09,716 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 02:44:09,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994949709] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:44:09,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 02:44:09,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-02-06 02:44:09,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819159555] [2025-02-06 02:44:09,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:44:09,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-06 02:44:09,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:44:09,739 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-06 02:44:09,740 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 02:44:09,742 INFO L87 Difference]: Start difference. First operand has 327 states, 229 states have (on average 1.51528384279476) internal successors, (347), 230 states have internal predecessors, (347), 95 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 95 states have call predecessors, (95), 95 states have call successors, (95) Second operand has 2 states, 2 states have (on average 76.0) internal successors, (152), 2 states have internal predecessors, (152), 2 states have call successors, (95), 2 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 2 states have call successors, (95) [2025-02-06 02:44:09,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:44:09,812 INFO L93 Difference]: Finished difference Result 648 states and 1164 transitions. [2025-02-06 02:44:09,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-06 02:44:09,817 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 76.0) internal successors, (152), 2 states have internal predecessors, (152), 2 states have call successors, (95), 2 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 2 states have call successors, (95) Word has length 622 [2025-02-06 02:44:09,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:44:09,825 INFO L225 Difference]: With dead ends: 648 [2025-02-06 02:44:09,825 INFO L226 Difference]: Without dead ends: 324 [2025-02-06 02:44:09,830 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 623 GetRequests, 623 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 02:44:09,831 INFO L435 NwaCegarLoop]: 520 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 02:44:09,835 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 520 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 02:44:09,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2025-02-06 02:44:09,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 324. [2025-02-06 02:44:09,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 227 states have (on average 1.5066079295154184) internal successors, (342), 227 states have internal predecessors, (342), 95 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 95 states have call predecessors, (95), 95 states have call successors, (95) [2025-02-06 02:44:09,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 532 transitions. [2025-02-06 02:44:09,892 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 532 transitions. Word has length 622 [2025-02-06 02:44:09,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:44:09,894 INFO L471 AbstractCegarLoop]: Abstraction has 324 states and 532 transitions. [2025-02-06 02:44:09,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 76.0) internal successors, (152), 2 states have internal predecessors, (152), 2 states have call successors, (95), 2 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 2 states have call successors, (95) [2025-02-06 02:44:09,895 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 532 transitions. [2025-02-06 02:44:09,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2025-02-06 02:44:09,907 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:44:09,908 INFO L218 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:44:09,917 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 02:44:10,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-02-06 02:44:10,113 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:44:10,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:44:10,114 INFO L85 PathProgramCache]: Analyzing trace with hash -123215711, now seen corresponding path program 1 times [2025-02-06 02:44:10,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:44:10,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736265328] [2025-02-06 02:44:10,114 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:44:10,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:44:10,171 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 622 statements into 1 equivalence classes. [2025-02-06 02:44:10,320 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 622 of 622 statements. [2025-02-06 02:44:10,320 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:44:10,320 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:44:10,699 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2025-02-06 02:44:10,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:44:10,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736265328] [2025-02-06 02:44:10,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736265328] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:44:10,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:44:10,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 02:44:10,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751640083] [2025-02-06 02:44:10,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:44:10,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 02:44:10,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:44:10,704 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 02:44:10,704 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 02:44:10,705 INFO L87 Difference]: Start difference. First operand 324 states and 532 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2025-02-06 02:44:10,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:44:10,846 INFO L93 Difference]: Finished difference Result 965 states and 1588 transitions. [2025-02-06 02:44:10,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 02:44:10,847 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) Word has length 622 [2025-02-06 02:44:10,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:44:10,856 INFO L225 Difference]: With dead ends: 965 [2025-02-06 02:44:10,856 INFO L226 Difference]: Without dead ends: 644 [2025-02-06 02:44:10,857 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 02:44:10,858 INFO L435 NwaCegarLoop]: 812 mSDtfsCounter, 517 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 517 SdHoareTripleChecker+Valid, 1310 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 02:44:10,859 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [517 Valid, 1310 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 02:44:10,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2025-02-06 02:44:10,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 642. [2025-02-06 02:44:10,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 449 states have (on average 1.4966592427616927) internal successors, (672), 449 states have internal predecessors, (672), 190 states have call successors, (190), 2 states have call predecessors, (190), 2 states have return successors, (190), 190 states have call predecessors, (190), 190 states have call successors, (190) [2025-02-06 02:44:10,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 1052 transitions. [2025-02-06 02:44:10,960 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 1052 transitions. Word has length 622 [2025-02-06 02:44:10,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:44:10,963 INFO L471 AbstractCegarLoop]: Abstraction has 642 states and 1052 transitions. [2025-02-06 02:44:10,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2025-02-06 02:44:10,964 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 1052 transitions. [2025-02-06 02:44:10,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2025-02-06 02:44:10,974 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:44:10,974 INFO L218 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:44:10,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 02:44:10,975 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:44:10,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:44:10,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1289912030, now seen corresponding path program 1 times [2025-02-06 02:44:10,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:44:10,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870267671] [2025-02-06 02:44:10,978 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:44:10,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:44:11,031 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 622 statements into 1 equivalence classes. [2025-02-06 02:44:11,983 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 622 of 622 statements. [2025-02-06 02:44:11,984 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:44:11,984 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:44:12,995 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2025-02-06 02:44:12,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:44:12,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870267671] [2025-02-06 02:44:12,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870267671] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:44:12,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:44:12,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 02:44:12,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233149575] [2025-02-06 02:44:12,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:44:12,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 02:44:12,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:44:13,000 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 02:44:13,000 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 02:44:13,000 INFO L87 Difference]: Start difference. First operand 642 states and 1052 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2025-02-06 02:44:13,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:44:13,156 INFO L93 Difference]: Finished difference Result 1865 states and 3061 transitions. [2025-02-06 02:44:13,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 02:44:13,157 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) Word has length 622 [2025-02-06 02:44:13,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:44:13,170 INFO L225 Difference]: With dead ends: 1865 [2025-02-06 02:44:13,171 INFO L226 Difference]: Without dead ends: 1226 [2025-02-06 02:44:13,173 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 02:44:13,175 INFO L435 NwaCegarLoop]: 519 mSDtfsCounter, 701 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 701 SdHoareTripleChecker+Valid, 1241 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 02:44:13,176 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [701 Valid, 1241 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 02:44:13,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1226 states. [2025-02-06 02:44:13,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1226 to 1025. [2025-02-06 02:44:13,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1025 states, 826 states have (on average 1.569007263922518) internal successors, (1296), 828 states have internal predecessors, (1296), 194 states have call successors, (194), 4 states have call predecessors, (194), 4 states have return successors, (194), 192 states have call predecessors, (194), 194 states have call successors, (194) [2025-02-06 02:44:13,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1025 states to 1025 states and 1684 transitions. [2025-02-06 02:44:13,292 INFO L78 Accepts]: Start accepts. Automaton has 1025 states and 1684 transitions. Word has length 622 [2025-02-06 02:44:13,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:44:13,294 INFO L471 AbstractCegarLoop]: Abstraction has 1025 states and 1684 transitions. [2025-02-06 02:44:13,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2025-02-06 02:44:13,295 INFO L276 IsEmpty]: Start isEmpty. Operand 1025 states and 1684 transitions. [2025-02-06 02:44:13,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2025-02-06 02:44:13,307 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:44:13,307 INFO L218 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:44:13,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 02:44:13,307 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:44:13,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:44:13,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1700661537, now seen corresponding path program 1 times [2025-02-06 02:44:13,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:44:13,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060635098] [2025-02-06 02:44:13,308 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:44:13,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:44:13,353 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 622 statements into 1 equivalence classes. [2025-02-06 02:44:14,322 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 622 of 622 statements. [2025-02-06 02:44:14,322 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:44:14,322 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:44:15,036 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 9 proven. 273 refuted. 0 times theorem prover too weak. 17578 trivial. 0 not checked. [2025-02-06 02:44:15,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:44:15,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060635098] [2025-02-06 02:44:15,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060635098] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:44:15,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470179612] [2025-02-06 02:44:15,037 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:44:15,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:44:15,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:44:15,039 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) [2025-02-06 02:44:15,040 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 [2025-02-06 02:44:15,216 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 622 statements into 1 equivalence classes. [2025-02-06 02:44:15,381 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 622 of 622 statements. [2025-02-06 02:44:15,381 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:44:15,381 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:44:15,387 INFO L256 TraceCheckSpWp]: Trace formula consists of 1464 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-06 02:44:15,398 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:44:16,604 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 11094 proven. 330 refuted. 0 times theorem prover too weak. 6436 trivial. 0 not checked. [2025-02-06 02:44:16,605 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 02:44:17,464 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 228 proven. 333 refuted. 0 times theorem prover too weak. 17299 trivial. 0 not checked. [2025-02-06 02:44:17,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470179612] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 02:44:17,465 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 02:44:17,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 10] total 17 [2025-02-06 02:44:17,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335985251] [2025-02-06 02:44:17,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 02:44:17,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-06 02:44:17,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:44:17,469 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-06 02:44:17,470 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2025-02-06 02:44:17,470 INFO L87 Difference]: Start difference. First operand 1025 states and 1684 transitions. Second operand has 17 states, 17 states have (on average 17.235294117647058) internal successors, (293), 17 states have internal predecessors, (293), 6 states have call successors, (264), 3 states have call predecessors, (264), 7 states have return successors, (266), 6 states have call predecessors, (266), 6 states have call successors, (266) [2025-02-06 02:44:18,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:44:18,761 INFO L93 Difference]: Finished difference Result 1700 states and 2763 transitions. [2025-02-06 02:44:18,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-02-06 02:44:18,763 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 17.235294117647058) internal successors, (293), 17 states have internal predecessors, (293), 6 states have call successors, (264), 3 states have call predecessors, (264), 7 states have return successors, (266), 6 states have call predecessors, (266), 6 states have call successors, (266) Word has length 622 [2025-02-06 02:44:18,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:44:18,768 INFO L225 Difference]: With dead ends: 1700 [2025-02-06 02:44:18,768 INFO L226 Difference]: Without dead ends: 678 [2025-02-06 02:44:18,771 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1264 GetRequests, 1234 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=277, Invalid=715, Unknown=0, NotChecked=0, Total=992 [2025-02-06 02:44:18,772 INFO L435 NwaCegarLoop]: 389 mSDtfsCounter, 865 mSDsluCounter, 1793 mSDsCounter, 0 mSdLazyCounter, 1647 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 2182 SdHoareTripleChecker+Invalid, 1872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 1647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-02-06 02:44:18,773 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [867 Valid, 2182 Invalid, 1872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 1647 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-02-06 02:44:18,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2025-02-06 02:44:18,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 666. [2025-02-06 02:44:18,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 467 states have (on average 1.4475374732334048) internal successors, (676), 467 states have internal predecessors, (676), 190 states have call successors, (190), 8 states have call predecessors, (190), 8 states have return successors, (190), 190 states have call predecessors, (190), 190 states have call successors, (190) [2025-02-06 02:44:18,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 1056 transitions. [2025-02-06 02:44:18,829 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 1056 transitions. Word has length 622 [2025-02-06 02:44:18,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:44:18,830 INFO L471 AbstractCegarLoop]: Abstraction has 666 states and 1056 transitions. [2025-02-06 02:44:18,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 17.235294117647058) internal successors, (293), 17 states have internal predecessors, (293), 6 states have call successors, (264), 3 states have call predecessors, (264), 7 states have return successors, (266), 6 states have call predecessors, (266), 6 states have call successors, (266) [2025-02-06 02:44:18,831 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 1056 transitions. [2025-02-06 02:44:18,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 625 [2025-02-06 02:44:18,839 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:44:18,839 INFO L218 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:44:18,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-06 02:44:19,044 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 [2025-02-06 02:44:19,044 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:44:19,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:44:19,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1857605012, now seen corresponding path program 1 times [2025-02-06 02:44:19,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:44:19,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842790026] [2025-02-06 02:44:19,046 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:44:19,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:44:19,080 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 624 statements into 1 equivalence classes. [2025-02-06 02:44:19,922 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 624 of 624 statements. [2025-02-06 02:44:19,922 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:44:19,922 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:44:20,475 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 165 proven. 117 refuted. 0 times theorem prover too weak. 17578 trivial. 0 not checked. [2025-02-06 02:44:20,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:44:20,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842790026] [2025-02-06 02:44:20,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842790026] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:44:20,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864580542] [2025-02-06 02:44:20,477 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:44:20,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:44:20,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:44:20,479 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) [2025-02-06 02:44:20,482 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 [2025-02-06 02:44:20,654 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 624 statements into 1 equivalence classes. [2025-02-06 02:44:20,795 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 624 of 624 statements. [2025-02-06 02:44:20,795 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:44:20,795 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:44:20,803 INFO L256 TraceCheckSpWp]: Trace formula consists of 1465 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 02:44:20,810 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:44:21,284 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 6562 proven. 60 refuted. 0 times theorem prover too weak. 11238 trivial. 0 not checked. [2025-02-06 02:44:21,284 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 02:44:21,717 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 222 proven. 60 refuted. 0 times theorem prover too weak. 17578 trivial. 0 not checked. [2025-02-06 02:44:21,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864580542] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 02:44:21,717 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 02:44:21,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2025-02-06 02:44:21,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594784508] [2025-02-06 02:44:21,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 02:44:21,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-06 02:44:21,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:44:21,722 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-06 02:44:21,722 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2025-02-06 02:44:21,723 INFO L87 Difference]: Start difference. First operand 666 states and 1056 transitions. Second operand has 14 states, 14 states have (on average 24.928571428571427) internal successors, (349), 14 states have internal predecessors, (349), 7 states have call successors, (154), 3 states have call predecessors, (154), 5 states have return successors, (156), 7 states have call predecessors, (156), 7 states have call successors, (156) [2025-02-06 02:44:22,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:44:22,891 INFO L93 Difference]: Finished difference Result 1369 states and 2143 transitions. [2025-02-06 02:44:22,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-06 02:44:22,892 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 24.928571428571427) internal successors, (349), 14 states have internal predecessors, (349), 7 states have call successors, (154), 3 states have call predecessors, (154), 5 states have return successors, (156), 7 states have call predecessors, (156), 7 states have call successors, (156) Word has length 624 [2025-02-06 02:44:22,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:44:22,899 INFO L225 Difference]: With dead ends: 1369 [2025-02-06 02:44:22,899 INFO L226 Difference]: Without dead ends: 706 [2025-02-06 02:44:22,902 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1267 GetRequests, 1242 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=197, Invalid=505, Unknown=0, NotChecked=0, Total=702 [2025-02-06 02:44:22,902 INFO L435 NwaCegarLoop]: 374 mSDtfsCounter, 1827 mSDsluCounter, 1137 mSDsCounter, 0 mSdLazyCounter, 1111 mSolverCounterSat, 1092 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1829 SdHoareTripleChecker+Valid, 1511 SdHoareTripleChecker+Invalid, 2203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1092 IncrementalHoareTripleChecker+Valid, 1111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-02-06 02:44:22,903 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1829 Valid, 1511 Invalid, 2203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1092 Valid, 1111 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-02-06 02:44:22,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2025-02-06 02:44:22,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 690. [2025-02-06 02:44:22,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 485 states have (on average 1.4061855670103092) internal successors, (682), 485 states have internal predecessors, (682), 190 states have call successors, (190), 14 states have call predecessors, (190), 14 states have return successors, (190), 190 states have call predecessors, (190), 190 states have call successors, (190) [2025-02-06 02:44:22,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1062 transitions. [2025-02-06 02:44:22,948 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1062 transitions. Word has length 624 [2025-02-06 02:44:22,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:44:22,950 INFO L471 AbstractCegarLoop]: Abstraction has 690 states and 1062 transitions. [2025-02-06 02:44:22,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 24.928571428571427) internal successors, (349), 14 states have internal predecessors, (349), 7 states have call successors, (154), 3 states have call predecessors, (154), 5 states have return successors, (156), 7 states have call predecessors, (156), 7 states have call successors, (156) [2025-02-06 02:44:22,951 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1062 transitions. [2025-02-06 02:44:22,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 627 [2025-02-06 02:44:22,954 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:44:22,954 INFO L218 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:44:22,965 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-06 02:44:23,158 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 [2025-02-06 02:44:23,158 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:44:23,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:44:23,159 INFO L85 PathProgramCache]: Analyzing trace with hash -711231797, now seen corresponding path program 1 times [2025-02-06 02:44:23,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:44:23,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374073342] [2025-02-06 02:44:23,159 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:44:23,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:44:23,191 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 626 statements into 1 equivalence classes. [2025-02-06 02:44:23,366 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 626 of 626 statements. [2025-02-06 02:44:23,367 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:44:23,367 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:44:23,660 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2025-02-06 02:44:23,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:44:23,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374073342] [2025-02-06 02:44:23,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374073342] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:44:23,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:44:23,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 02:44:23,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154733733] [2025-02-06 02:44:23,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:44:23,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 02:44:23,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:44:23,662 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 02:44:23,662 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 02:44:23,662 INFO L87 Difference]: Start difference. First operand 690 states and 1062 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2025-02-06 02:44:23,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:44:23,928 INFO L93 Difference]: Finished difference Result 1379 states and 2125 transitions. [2025-02-06 02:44:23,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 02:44:23,929 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) Word has length 626 [2025-02-06 02:44:23,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:44:23,934 INFO L225 Difference]: With dead ends: 1379 [2025-02-06 02:44:23,934 INFO L226 Difference]: Without dead ends: 692 [2025-02-06 02:44:23,936 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 02:44:23,936 INFO L435 NwaCegarLoop]: 503 mSDtfsCounter, 329 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 02:44:23,936 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 811 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 02:44:23,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2025-02-06 02:44:23,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 692. [2025-02-06 02:44:23,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 487 states have (on average 1.404517453798768) internal successors, (684), 487 states have internal predecessors, (684), 190 states have call successors, (190), 14 states have call predecessors, (190), 14 states have return successors, (190), 190 states have call predecessors, (190), 190 states have call successors, (190) [2025-02-06 02:44:23,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1064 transitions. [2025-02-06 02:44:23,998 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1064 transitions. Word has length 626 [2025-02-06 02:44:23,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:44:23,999 INFO L471 AbstractCegarLoop]: Abstraction has 692 states and 1064 transitions. [2025-02-06 02:44:23,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2025-02-06 02:44:23,999 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1064 transitions. [2025-02-06 02:44:24,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 628 [2025-02-06 02:44:24,002 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:44:24,003 INFO L218 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:44:24,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-06 02:44:24,003 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:44:24,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:44:24,003 INFO L85 PathProgramCache]: Analyzing trace with hash -309632950, now seen corresponding path program 1 times [2025-02-06 02:44:24,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:44:24,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634803057] [2025-02-06 02:44:24,004 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:44:24,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:44:24,033 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 627 statements into 1 equivalence classes. [2025-02-06 02:44:25,756 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 627 of 627 statements. [2025-02-06 02:44:25,757 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:44:25,757 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:44:26,190 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 3 proven. 279 refuted. 0 times theorem prover too weak. 17578 trivial. 0 not checked. [2025-02-06 02:44:26,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:44:26,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634803057] [2025-02-06 02:44:26,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634803057] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:44:26,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17846253] [2025-02-06 02:44:26,191 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:44:26,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:44:26,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:44:26,192 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) [2025-02-06 02:44:26,194 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 [2025-02-06 02:44:26,386 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 627 statements into 1 equivalence classes. [2025-02-06 02:44:26,546 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 627 of 627 statements. [2025-02-06 02:44:26,546 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:44:26,546 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:44:26,552 INFO L256 TraceCheckSpWp]: Trace formula consists of 1465 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 02:44:26,567 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:44:27,380 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 468 proven. 279 refuted. 0 times theorem prover too weak. 17113 trivial. 0 not checked. [2025-02-06 02:44:27,380 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 02:44:27,885 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 3 proven. 279 refuted. 0 times theorem prover too weak. 17578 trivial. 0 not checked. [2025-02-06 02:44:27,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17846253] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 02:44:27,886 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 02:44:27,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2025-02-06 02:44:27,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173440893] [2025-02-06 02:44:27,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 02:44:27,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 02:44:27,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:44:27,888 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 02:44:27,888 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-02-06 02:44:27,888 INFO L87 Difference]: Start difference. First operand 692 states and 1064 transitions. Second operand has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 7 states have internal predecessors, (164), 2 states have call successors, (188), 2 states have call predecessors, (188), 4 states have return successors, (189), 2 states have call predecessors, (189), 2 states have call successors, (189) [2025-02-06 02:44:28,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:44:28,268 INFO L93 Difference]: Finished difference Result 1407 states and 2147 transitions. [2025-02-06 02:44:28,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 02:44:28,268 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 7 states have internal predecessors, (164), 2 states have call successors, (188), 2 states have call predecessors, (188), 4 states have return successors, (189), 2 states have call predecessors, (189), 2 states have call successors, (189) Word has length 627 [2025-02-06 02:44:28,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:44:28,275 INFO L225 Difference]: With dead ends: 1407 [2025-02-06 02:44:28,276 INFO L226 Difference]: Without dead ends: 718 [2025-02-06 02:44:28,278 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1261 GetRequests, 1251 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2025-02-06 02:44:28,279 INFO L435 NwaCegarLoop]: 394 mSDtfsCounter, 225 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 990 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 02:44:28,280 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 990 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 02:44:28,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2025-02-06 02:44:28,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 698. [2025-02-06 02:44:28,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 491 states have (on average 1.3788187372708758) internal successors, (677), 491 states have internal predecessors, (677), 190 states have call successors, (190), 16 states have call predecessors, (190), 16 states have return successors, (190), 190 states have call predecessors, (190), 190 states have call successors, (190) [2025-02-06 02:44:28,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 1057 transitions. [2025-02-06 02:44:28,329 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 1057 transitions. Word has length 627 [2025-02-06 02:44:28,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:44:28,330 INFO L471 AbstractCegarLoop]: Abstraction has 698 states and 1057 transitions. [2025-02-06 02:44:28,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 7 states have internal predecessors, (164), 2 states have call successors, (188), 2 states have call predecessors, (188), 4 states have return successors, (189), 2 states have call predecessors, (189), 2 states have call successors, (189) [2025-02-06 02:44:28,331 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 1057 transitions. [2025-02-06 02:44:28,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 628 [2025-02-06 02:44:28,333 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:44:28,334 INFO L218 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:44:28,344 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-06 02:44:28,534 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,SelfDestructingSolverStorable6 [2025-02-06 02:44:28,535 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:44:28,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:44:28,535 INFO L85 PathProgramCache]: Analyzing trace with hash 2059801035, now seen corresponding path program 1 times [2025-02-06 02:44:28,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:44:28,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577737518] [2025-02-06 02:44:28,535 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:44:28,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:44:28,568 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 627 statements into 1 equivalence classes. [2025-02-06 02:44:29,224 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 627 of 627 statements. [2025-02-06 02:44:29,224 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:44:29,224 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:44:30,023 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 222 proven. 60 refuted. 0 times theorem prover too weak. 17578 trivial. 0 not checked. [2025-02-06 02:44:30,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:44:30,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577737518] [2025-02-06 02:44:30,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577737518] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:44:30,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234112689] [2025-02-06 02:44:30,024 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:44:30,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:44:30,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:44:30,026 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) [2025-02-06 02:44:30,029 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 [2025-02-06 02:44:30,210 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 627 statements into 1 equivalence classes. [2025-02-06 02:44:30,433 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 627 of 627 statements. [2025-02-06 02:44:30,434 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:44:30,434 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:44:30,440 INFO L256 TraceCheckSpWp]: Trace formula consists of 1466 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-02-06 02:44:30,449 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:44:32,295 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 11664 proven. 336 refuted. 0 times theorem prover too weak. 5860 trivial. 0 not checked. [2025-02-06 02:44:32,295 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 02:44:33,060 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 222 proven. 339 refuted. 0 times theorem prover too weak. 17299 trivial. 0 not checked. [2025-02-06 02:44:33,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234112689] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 02:44:33,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 02:44:33,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2025-02-06 02:44:33,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524559068] [2025-02-06 02:44:33,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 02:44:33,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-06 02:44:33,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:44:33,063 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-06 02:44:33,063 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=398, Unknown=0, NotChecked=0, Total=506 [2025-02-06 02:44:33,064 INFO L87 Difference]: Start difference. First operand 698 states and 1057 transitions. Second operand has 23 states, 22 states have (on average 18.227272727272727) internal successors, (401), 23 states have internal predecessors, (401), 9 states have call successors, (267), 4 states have call predecessors, (267), 9 states have return successors, (267), 9 states have call predecessors, (267), 9 states have call successors, (267) [2025-02-06 02:44:35,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:44:35,091 INFO L93 Difference]: Finished difference Result 2168 states and 3239 transitions. [2025-02-06 02:44:35,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-02-06 02:44:35,091 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 18.227272727272727) internal successors, (401), 23 states have internal predecessors, (401), 9 states have call successors, (267), 4 states have call predecessors, (267), 9 states have return successors, (267), 9 states have call predecessors, (267), 9 states have call successors, (267) Word has length 627 [2025-02-06 02:44:35,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:44:35,098 INFO L225 Difference]: With dead ends: 2168 [2025-02-06 02:44:35,098 INFO L226 Difference]: Without dead ends: 1473 [2025-02-06 02:44:35,100 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1293 GetRequests, 1245 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 610 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=630, Invalid=1820, Unknown=0, NotChecked=0, Total=2450 [2025-02-06 02:44:35,101 INFO L435 NwaCegarLoop]: 356 mSDtfsCounter, 3395 mSDsluCounter, 2238 mSDsCounter, 0 mSdLazyCounter, 2149 mSolverCounterSat, 771 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3413 SdHoareTripleChecker+Valid, 2594 SdHoareTripleChecker+Invalid, 2920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 771 IncrementalHoareTripleChecker+Valid, 2149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-02-06 02:44:35,101 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3413 Valid, 2594 Invalid, 2920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [771 Valid, 2149 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-02-06 02:44:35,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1473 states. [2025-02-06 02:44:35,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1473 to 1417. [2025-02-06 02:44:35,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1417 states, 996 states have (on average 1.359437751004016) internal successors, (1354), 996 states have internal predecessors, (1354), 380 states have call successors, (380), 40 states have call predecessors, (380), 40 states have return successors, (380), 380 states have call predecessors, (380), 380 states have call successors, (380) [2025-02-06 02:44:35,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1417 states to 1417 states and 2114 transitions. [2025-02-06 02:44:35,213 INFO L78 Accepts]: Start accepts. Automaton has 1417 states and 2114 transitions. Word has length 627 [2025-02-06 02:44:35,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:44:35,214 INFO L471 AbstractCegarLoop]: Abstraction has 1417 states and 2114 transitions. [2025-02-06 02:44:35,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 18.227272727272727) internal successors, (401), 23 states have internal predecessors, (401), 9 states have call successors, (267), 4 states have call predecessors, (267), 9 states have return successors, (267), 9 states have call predecessors, (267), 9 states have call successors, (267) [2025-02-06 02:44:35,215 INFO L276 IsEmpty]: Start isEmpty. Operand 1417 states and 2114 transitions. [2025-02-06 02:44:35,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 628 [2025-02-06 02:44:35,218 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:44:35,218 INFO L218 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:44:35,234 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-06 02:44:35,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:44:35,419 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:44:35,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:44:35,420 INFO L85 PathProgramCache]: Analyzing trace with hash 266863373, now seen corresponding path program 1 times [2025-02-06 02:44:35,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:44:35,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947360139] [2025-02-06 02:44:35,420 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:44:35,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:44:35,448 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 627 statements into 1 equivalence classes. [2025-02-06 02:44:36,199 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 627 of 627 statements. [2025-02-06 02:44:36,199 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:44:36,199 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:44:36,950 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 165 proven. 117 refuted. 0 times theorem prover too weak. 17578 trivial. 0 not checked. [2025-02-06 02:44:36,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:44:36,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947360139] [2025-02-06 02:44:36,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947360139] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:44:36,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490693032] [2025-02-06 02:44:36,950 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:44:36,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:44:36,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:44:36,952 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) [2025-02-06 02:44:36,953 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 [2025-02-06 02:44:37,138 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 627 statements into 1 equivalence classes. [2025-02-06 02:44:37,355 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 627 of 627 statements. [2025-02-06 02:44:37,355 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:44:37,355 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:44:37,360 INFO L256 TraceCheckSpWp]: Trace formula consists of 1468 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-02-06 02:44:37,367 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:44:39,629 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 11708 proven. 444 refuted. 0 times theorem prover too weak. 5708 trivial. 0 not checked. [2025-02-06 02:44:39,629 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 02:44:40,244 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 330 proven. 231 refuted. 0 times theorem prover too weak. 17299 trivial. 0 not checked. [2025-02-06 02:44:40,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490693032] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 02:44:40,244 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 02:44:40,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12, 9] total 25 [2025-02-06 02:44:40,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352112891] [2025-02-06 02:44:40,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 02:44:40,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-06 02:44:40,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:44:40,247 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-06 02:44:40,247 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=466, Unknown=0, NotChecked=0, Total=600 [2025-02-06 02:44:40,247 INFO L87 Difference]: Start difference. First operand 1417 states and 2114 transitions. Second operand has 25 states, 24 states have (on average 15.166666666666666) internal successors, (364), 23 states have internal predecessors, (364), 11 states have call successors, (267), 5 states have call predecessors, (267), 10 states have return successors, (267), 11 states have call predecessors, (267), 11 states have call successors, (267) [2025-02-06 02:44:41,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:44:41,652 INFO L93 Difference]: Finished difference Result 2895 states and 4285 transitions. [2025-02-06 02:44:41,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-02-06 02:44:41,653 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 15.166666666666666) internal successors, (364), 23 states have internal predecessors, (364), 11 states have call successors, (267), 5 states have call predecessors, (267), 10 states have return successors, (267), 11 states have call predecessors, (267), 11 states have call successors, (267) Word has length 627 [2025-02-06 02:44:41,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:44:41,661 INFO L225 Difference]: With dead ends: 2895 [2025-02-06 02:44:41,661 INFO L226 Difference]: Without dead ends: 1481 [2025-02-06 02:44:41,665 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1284 GetRequests, 1242 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=518, Invalid=1374, Unknown=0, NotChecked=0, Total=1892 [2025-02-06 02:44:41,665 INFO L435 NwaCegarLoop]: 379 mSDtfsCounter, 1895 mSDsluCounter, 1434 mSDsCounter, 0 mSdLazyCounter, 1324 mSolverCounterSat, 875 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1895 SdHoareTripleChecker+Valid, 1813 SdHoareTripleChecker+Invalid, 2199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 875 IncrementalHoareTripleChecker+Valid, 1324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-02-06 02:44:41,666 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1895 Valid, 1813 Invalid, 2199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [875 Valid, 1324 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-02-06 02:44:41,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1481 states. [2025-02-06 02:44:41,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1481 to 1433. [2025-02-06 02:44:41,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1433 states, 1008 states have (on average 1.3472222222222223) internal successors, (1358), 1008 states have internal predecessors, (1358), 380 states have call successors, (380), 44 states have call predecessors, (380), 44 states have return successors, (380), 380 states have call predecessors, (380), 380 states have call successors, (380) [2025-02-06 02:44:41,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1433 states to 1433 states and 2118 transitions. [2025-02-06 02:44:41,802 INFO L78 Accepts]: Start accepts. Automaton has 1433 states and 2118 transitions. Word has length 627 [2025-02-06 02:44:41,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:44:41,803 INFO L471 AbstractCegarLoop]: Abstraction has 1433 states and 2118 transitions. [2025-02-06 02:44:41,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 15.166666666666666) internal successors, (364), 23 states have internal predecessors, (364), 11 states have call successors, (267), 5 states have call predecessors, (267), 10 states have return successors, (267), 11 states have call predecessors, (267), 11 states have call successors, (267) [2025-02-06 02:44:41,803 INFO L276 IsEmpty]: Start isEmpty. Operand 1433 states and 2118 transitions. [2025-02-06 02:44:41,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 629 [2025-02-06 02:44:41,806 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:44:41,806 INFO L218 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:44:41,816 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-06 02:44:42,007 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,SelfDestructingSolverStorable8 [2025-02-06 02:44:42,007 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:44:42,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:44:42,008 INFO L85 PathProgramCache]: Analyzing trace with hash 310034859, now seen corresponding path program 1 times [2025-02-06 02:44:42,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:44:42,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181819434] [2025-02-06 02:44:42,008 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:44:42,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:44:42,033 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 628 statements into 1 equivalence classes. [2025-02-06 02:44:43,284 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 628 of 628 statements. [2025-02-06 02:44:43,284 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:44:43,284 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:44:53,002 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 186 proven. 372 refuted. 0 times theorem prover too weak. 17302 trivial. 0 not checked. [2025-02-06 02:44:53,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:44:53,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181819434] [2025-02-06 02:44:53,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181819434] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:44:53,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349549436] [2025-02-06 02:44:53,002 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:44:53,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:44:53,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:44:53,004 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) [2025-02-06 02:44:53,005 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 [2025-02-06 02:44:53,187 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 628 statements into 1 equivalence classes. [2025-02-06 02:44:53,417 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 628 of 628 statements. [2025-02-06 02:44:53,417 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:44:53,417 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:44:53,423 INFO L256 TraceCheckSpWp]: Trace formula consists of 1467 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-02-06 02:44:53,431 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:44:55,995 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 11525 proven. 435 refuted. 0 times theorem prover too weak. 5900 trivial. 0 not checked. [2025-02-06 02:44:55,996 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 02:44:58,039 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 177 proven. 384 refuted. 0 times theorem prover too weak. 17299 trivial. 0 not checked. [2025-02-06 02:44:58,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349549436] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 02:44:58,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 02:44:58,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 13] total 37 [2025-02-06 02:44:58,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377066893] [2025-02-06 02:44:58,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 02:44:58,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2025-02-06 02:44:58,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:44:58,042 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2025-02-06 02:44:58,043 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=1135, Unknown=0, NotChecked=0, Total=1332 [2025-02-06 02:44:58,043 INFO L87 Difference]: Start difference. First operand 1433 states and 2118 transitions. Second operand has 37 states, 37 states have (on average 11.45945945945946) internal successors, (424), 37 states have internal predecessors, (424), 10 states have call successors, (285), 5 states have call predecessors, (285), 11 states have return successors, (285), 10 states have call predecessors, (285), 10 states have call successors, (285) [2025-02-06 02:45:20,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:45:20,858 INFO L93 Difference]: Finished difference Result 13285 states and 18941 transitions. [2025-02-06 02:45:20,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 211 states. [2025-02-06 02:45:20,859 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 11.45945945945946) internal successors, (424), 37 states have internal predecessors, (424), 10 states have call successors, (285), 5 states have call predecessors, (285), 11 states have return successors, (285), 10 states have call predecessors, (285), 10 states have call successors, (285) Word has length 628 [2025-02-06 02:45:20,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:45:20,899 INFO L225 Difference]: With dead ends: 13285 [2025-02-06 02:45:20,900 INFO L226 Difference]: Without dead ends: 11855 [2025-02-06 02:45:20,914 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1519 GetRequests, 1286 SyntacticMatches, 0 SemanticMatches, 233 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21655 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=8437, Invalid=46553, Unknown=0, NotChecked=0, Total=54990 [2025-02-06 02:45:20,915 INFO L435 NwaCegarLoop]: 753 mSDtfsCounter, 8320 mSDsluCounter, 11157 mSDsCounter, 0 mSdLazyCounter, 15079 mSolverCounterSat, 4658 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8352 SdHoareTripleChecker+Valid, 11910 SdHoareTripleChecker+Invalid, 19737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4658 IncrementalHoareTripleChecker+Valid, 15079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.2s IncrementalHoareTripleChecker+Time [2025-02-06 02:45:20,916 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8352 Valid, 11910 Invalid, 19737 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4658 Valid, 15079 Invalid, 0 Unknown, 0 Unchecked, 13.2s Time] [2025-02-06 02:45:20,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11855 states. [2025-02-06 02:45:21,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11855 to 7395. [2025-02-06 02:45:21,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7395 states, 5588 states have (on average 1.3793843951324267) internal successors, (7708), 5598 states have internal predecessors, (7708), 1542 states have call successors, (1542), 264 states have call predecessors, (1542), 264 states have return successors, (1542), 1532 states have call predecessors, (1542), 1542 states have call successors, (1542) [2025-02-06 02:45:21,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7395 states to 7395 states and 10792 transitions. [2025-02-06 02:45:21,723 INFO L78 Accepts]: Start accepts. Automaton has 7395 states and 10792 transitions. Word has length 628 [2025-02-06 02:45:21,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:45:21,724 INFO L471 AbstractCegarLoop]: Abstraction has 7395 states and 10792 transitions. [2025-02-06 02:45:21,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 11.45945945945946) internal successors, (424), 37 states have internal predecessors, (424), 10 states have call successors, (285), 5 states have call predecessors, (285), 11 states have return successors, (285), 10 states have call predecessors, (285), 10 states have call successors, (285) [2025-02-06 02:45:21,725 INFO L276 IsEmpty]: Start isEmpty. Operand 7395 states and 10792 transitions. [2025-02-06 02:45:21,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 630 [2025-02-06 02:45:21,730 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:45:21,730 INFO L218 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:45:21,741 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-06 02:45:21,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:45:21,931 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:45:21,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:45:21,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1939192791, now seen corresponding path program 1 times [2025-02-06 02:45:21,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:45:21,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587227843] [2025-02-06 02:45:21,932 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:45:21,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:45:21,960 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 629 statements into 1 equivalence classes. [2025-02-06 02:45:22,773 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 629 of 629 statements. [2025-02-06 02:45:22,773 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:45:22,773 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat