./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-51.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_amount250_file-51.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 71fa1ece88cae2f03b972f802d0e538a87174ef11cefc651662c60c0e9dd54e7 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 02:18:39,024 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 02:18:39,082 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-06 02:18:39,087 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 02:18:39,087 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 02:18:39,104 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 02:18:39,105 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 02:18:39,105 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 02:18:39,105 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 02:18:39,105 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 02:18:39,105 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 02:18:39,105 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 02:18:39,105 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 02:18:39,105 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 02:18:39,105 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 02:18:39,106 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 02:18:39,106 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 02:18:39,106 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 02:18:39,106 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 02:18:39,106 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 02:18:39,106 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 02:18:39,106 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 02:18:39,106 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 02:18:39,106 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 02:18:39,106 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 02:18:39,106 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 02:18:39,106 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 02:18:39,106 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 02:18:39,106 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 02:18:39,106 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 02:18:39,106 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 02:18:39,106 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 02:18:39,106 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 02:18:39,107 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 02:18:39,107 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 02:18:39,107 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 02:18:39,107 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 02:18:39,107 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 02:18:39,107 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 02:18:39,107 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 02:18:39,107 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 02:18:39,107 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 02:18:39,107 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 02:18:39,107 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 -> 71fa1ece88cae2f03b972f802d0e538a87174ef11cefc651662c60c0e9dd54e7 [2025-02-06 02:18:39,325 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 02:18:39,338 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 02:18:39,340 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 02:18:39,341 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 02:18:39,341 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 02:18:39,342 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-51.i [2025-02-06 02:18:40,588 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f64661717/9ed460797bd247699b23202ec3990e06/FLAG38c0a3008 [2025-02-06 02:18:40,926 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 02:18:40,927 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-51.i [2025-02-06 02:18:40,945 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f64661717/9ed460797bd247699b23202ec3990e06/FLAG38c0a3008 [2025-02-06 02:18:41,187 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f64661717/9ed460797bd247699b23202ec3990e06 [2025-02-06 02:18:41,190 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 02:18:41,193 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 02:18:41,194 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 02:18:41,194 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 02:18:41,201 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 02:18:41,206 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 02:18:41" (1/1) ... [2025-02-06 02:18:41,207 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16a0cc83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:18:41, skipping insertion in model container [2025-02-06 02:18:41,207 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 02:18:41" (1/1) ... [2025-02-06 02:18:41,247 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 02:18:41,354 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_amount250_file-51.i[916,929] [2025-02-06 02:18:41,511 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 02:18:41,522 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 02:18:41,531 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_amount250_file-51.i[916,929] [2025-02-06 02:18:41,596 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 02:18:41,613 INFO L204 MainTranslator]: Completed translation [2025-02-06 02:18:41,613 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:18:41 WrapperNode [2025-02-06 02:18:41,613 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 02:18:41,617 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 02:18:41,617 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 02:18:41,617 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 02:18:41,625 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:18:41" (1/1) ... [2025-02-06 02:18:41,645 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:18:41" (1/1) ... [2025-02-06 02:18:41,719 INFO L138 Inliner]: procedures = 26, calls = 80, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 456 [2025-02-06 02:18:41,719 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 02:18:41,720 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 02:18:41,720 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 02:18:41,720 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 02:18:41,726 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:18:41" (1/1) ... [2025-02-06 02:18:41,727 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:18:41" (1/1) ... [2025-02-06 02:18:41,744 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:18:41" (1/1) ... [2025-02-06 02:18:41,784 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 02:18:41,784 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:18:41" (1/1) ... [2025-02-06 02:18:41,785 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:18:41" (1/1) ... [2025-02-06 02:18:41,806 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:18:41" (1/1) ... [2025-02-06 02:18:41,813 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:18:41" (1/1) ... [2025-02-06 02:18:41,820 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:18:41" (1/1) ... [2025-02-06 02:18:41,828 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:18:41" (1/1) ... [2025-02-06 02:18:41,841 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 02:18:41,842 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 02:18:41,842 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 02:18:41,843 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 02:18:41,843 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:18:41" (1/1) ... [2025-02-06 02:18:41,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 02:18:41,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:18:41,872 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 02:18:41,883 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 02:18:41,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 02:18:41,898 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-02-06 02:18:41,898 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-02-06 02:18:41,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 02:18:41,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 02:18:41,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 02:18:41,975 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 02:18:41,977 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 02:18:42,589 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L381: havoc property_#t~ite43#1;havoc property_#t~bitwise42#1;havoc property_#t~short44#1;havoc property_#t~bitwise45#1;havoc property_#t~short46#1;havoc property_#t~bitwise47#1;havoc property_#t~short48#1; [2025-02-06 02:18:42,664 INFO L? ?]: Removed 46 outVars from TransFormulas that were not future-live. [2025-02-06 02:18:42,664 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 02:18:42,685 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 02:18:42,685 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 02:18:42,685 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 02:18:42 BoogieIcfgContainer [2025-02-06 02:18:42,686 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 02:18:42,691 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 02:18:42,691 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 02:18:42,695 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 02:18:42,696 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 02:18:41" (1/3) ... [2025-02-06 02:18:42,700 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46a08c90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 02:18:42, skipping insertion in model container [2025-02-06 02:18:42,700 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:18:41" (2/3) ... [2025-02-06 02:18:42,700 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46a08c90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 02:18:42, skipping insertion in model container [2025-02-06 02:18:42,700 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 02:18:42" (3/3) ... [2025-02-06 02:18:42,701 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-51.i [2025-02-06 02:18:42,715 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 02:18:42,717 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount250_file-51.i that has 2 procedures, 197 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-02-06 02:18:42,759 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 02:18:42,766 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;@4e3dd2a7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 02:18:42,766 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-06 02:18:42,768 INFO L276 IsEmpty]: Start isEmpty. Operand has 197 states, 127 states have (on average 1.4566929133858268) internal successors, (185), 128 states have internal predecessors, (185), 67 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2025-02-06 02:18:42,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2025-02-06 02:18:42,780 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:18:42,781 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:18:42,781 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:18:42,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:18:42,785 INFO L85 PathProgramCache]: Analyzing trace with hash -108076034, now seen corresponding path program 1 times [2025-02-06 02:18:42,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:18:42,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088808180] [2025-02-06 02:18:42,792 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:18:42,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:18:42,892 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 420 statements into 1 equivalence classes. [2025-02-06 02:18:42,928 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 420 of 420 statements. [2025-02-06 02:18:42,929 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:18:42,929 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:18:43,266 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 8712 trivial. 0 not checked. [2025-02-06 02:18:43,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:18:43,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088808180] [2025-02-06 02:18:43,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088808180] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:18:43,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573147510] [2025-02-06 02:18:43,267 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:18:43,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:18:43,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:18:43,270 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 02:18:43,271 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 02:18:43,370 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 420 statements into 1 equivalence classes. [2025-02-06 02:18:43,475 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 420 of 420 statements. [2025-02-06 02:18:43,475 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:18:43,475 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:18:43,479 INFO L256 TraceCheckSpWp]: Trace formula consists of 939 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-02-06 02:18:43,491 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:18:43,524 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 8712 trivial. 0 not checked. [2025-02-06 02:18:43,524 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 02:18:43,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573147510] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:18:43,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 02:18:43,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-02-06 02:18:43,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880862843] [2025-02-06 02:18:43,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:18:43,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-06 02:18:43,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:18:43,545 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-06 02:18:43,545 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 02:18:43,547 INFO L87 Difference]: Start difference. First operand has 197 states, 127 states have (on average 1.4566929133858268) internal successors, (185), 128 states have internal predecessors, (185), 67 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) Second operand has 2 states, 2 states have (on average 45.0) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (67), 2 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 2 states have call successors, (67) [2025-02-06 02:18:43,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:18:43,604 INFO L93 Difference]: Finished difference Result 387 states and 698 transitions. [2025-02-06 02:18:43,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-06 02:18:43,606 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 45.0) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (67), 2 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 2 states have call successors, (67) Word has length 420 [2025-02-06 02:18:43,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:18:43,617 INFO L225 Difference]: With dead ends: 387 [2025-02-06 02:18:43,617 INFO L226 Difference]: Without dead ends: 193 [2025-02-06 02:18:43,622 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 421 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 02:18:43,625 INFO L435 NwaCegarLoop]: 304 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 02:18:43,625 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 304 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 02:18:43,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2025-02-06 02:18:43,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2025-02-06 02:18:43,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 124 states have (on average 1.4193548387096775) internal successors, (176), 124 states have internal predecessors, (176), 67 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2025-02-06 02:18:43,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 310 transitions. [2025-02-06 02:18:43,697 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 310 transitions. Word has length 420 [2025-02-06 02:18:43,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:18:43,697 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 310 transitions. [2025-02-06 02:18:43,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 45.0) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (67), 2 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 2 states have call successors, (67) [2025-02-06 02:18:43,698 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 310 transitions. [2025-02-06 02:18:43,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2025-02-06 02:18:43,709 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:18:43,709 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:18:43,719 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 02:18:43,910 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 02:18:43,912 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:18:43,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:18:43,913 INFO L85 PathProgramCache]: Analyzing trace with hash -722648511, now seen corresponding path program 1 times [2025-02-06 02:18:43,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:18:43,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731746225] [2025-02-06 02:18:43,914 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:18:43,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:18:43,952 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 420 statements into 1 equivalence classes. [2025-02-06 02:18:44,035 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 420 of 420 statements. [2025-02-06 02:18:44,036 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:18:44,036 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:18:44,255 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2025-02-06 02:18:44,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:18:44,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731746225] [2025-02-06 02:18:44,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731746225] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:18:44,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:18:44,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 02:18:44,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235379097] [2025-02-06 02:18:44,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:18:44,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 02:18:44,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:18:44,260 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 02:18:44,260 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 02:18:44,261 INFO L87 Difference]: Start difference. First operand 193 states and 310 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2025-02-06 02:18:44,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:18:44,355 INFO L93 Difference]: Finished difference Result 485 states and 774 transitions. [2025-02-06 02:18:44,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 02:18:44,358 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 420 [2025-02-06 02:18:44,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:18:44,361 INFO L225 Difference]: With dead ends: 485 [2025-02-06 02:18:44,361 INFO L226 Difference]: Without dead ends: 295 [2025-02-06 02:18:44,365 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 02:18:44,365 INFO L435 NwaCegarLoop]: 439 mSDtfsCounter, 153 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 02:18:44,366 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 724 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 02:18:44,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2025-02-06 02:18:44,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 292. [2025-02-06 02:18:44,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 197 states have (on average 1.416243654822335) internal successors, (279), 198 states have internal predecessors, (279), 92 states have call successors, (92), 2 states have call predecessors, (92), 2 states have return successors, (92), 91 states have call predecessors, (92), 92 states have call successors, (92) [2025-02-06 02:18:44,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 463 transitions. [2025-02-06 02:18:44,408 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 463 transitions. Word has length 420 [2025-02-06 02:18:44,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:18:44,409 INFO L471 AbstractCegarLoop]: Abstraction has 292 states and 463 transitions. [2025-02-06 02:18:44,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2025-02-06 02:18:44,409 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 463 transitions. [2025-02-06 02:18:44,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2025-02-06 02:18:44,415 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:18:44,416 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:18:44,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 02:18:44,416 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:18:44,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:18:44,416 INFO L85 PathProgramCache]: Analyzing trace with hash -2121975320, now seen corresponding path program 1 times [2025-02-06 02:18:44,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:18:44,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067629781] [2025-02-06 02:18:44,418 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:18:44,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:18:44,454 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 421 statements into 1 equivalence classes. [2025-02-06 02:18:44,599 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 421 of 421 statements. [2025-02-06 02:18:44,601 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:18:44,601 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:18:47,610 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2025-02-06 02:18:47,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:18:47,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067629781] [2025-02-06 02:18:47,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067629781] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:18:47,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:18:47,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-02-06 02:18:47,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704200697] [2025-02-06 02:18:47,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:18:47,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 02:18:47,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:18:47,612 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 02:18:47,612 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2025-02-06 02:18:47,613 INFO L87 Difference]: Start difference. First operand 292 states and 463 transitions. Second operand has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 2 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) [2025-02-06 02:18:50,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:18:50,234 INFO L93 Difference]: Finished difference Result 1424 states and 2218 transitions. [2025-02-06 02:18:50,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-06 02:18:50,234 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 2 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) Word has length 421 [2025-02-06 02:18:50,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:18:50,247 INFO L225 Difference]: With dead ends: 1424 [2025-02-06 02:18:50,247 INFO L226 Difference]: Without dead ends: 1135 [2025-02-06 02:18:50,249 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=114, Invalid=266, Unknown=0, NotChecked=0, Total=380 [2025-02-06 02:18:50,250 INFO L435 NwaCegarLoop]: 415 mSDtfsCounter, 751 mSDsluCounter, 1852 mSDsCounter, 0 mSdLazyCounter, 1096 mSolverCounterSat, 346 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 751 SdHoareTripleChecker+Valid, 2267 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 346 IncrementalHoareTripleChecker+Valid, 1096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-02-06 02:18:50,251 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [751 Valid, 2267 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [346 Valid, 1096 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-02-06 02:18:50,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1135 states. [2025-02-06 02:18:50,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1135 to 903. [2025-02-06 02:18:50,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 903 states, 662 states have (on average 1.4425981873111782) internal successors, (955), 668 states have internal predecessors, (955), 232 states have call successors, (232), 8 states have call predecessors, (232), 8 states have return successors, (232), 226 states have call predecessors, (232), 232 states have call successors, (232) [2025-02-06 02:18:50,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 1419 transitions. [2025-02-06 02:18:50,384 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 1419 transitions. Word has length 421 [2025-02-06 02:18:50,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:18:50,384 INFO L471 AbstractCegarLoop]: Abstraction has 903 states and 1419 transitions. [2025-02-06 02:18:50,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 2 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) [2025-02-06 02:18:50,385 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 1419 transitions. [2025-02-06 02:18:50,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2025-02-06 02:18:50,388 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:18:50,389 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:18:50,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 02:18:50,389 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:18:50,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:18:50,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1148298055, now seen corresponding path program 1 times [2025-02-06 02:18:50,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:18:50,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721600298] [2025-02-06 02:18:50,390 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:18:50,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:18:50,410 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 421 statements into 1 equivalence classes. [2025-02-06 02:18:50,637 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 421 of 421 statements. [2025-02-06 02:18:50,637 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:18:50,637 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:18:51,031 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2025-02-06 02:18:51,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:18:51,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721600298] [2025-02-06 02:18:51,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721600298] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:18:51,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:18:51,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 02:18:51,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926407779] [2025-02-06 02:18:51,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:18:51,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 02:18:51,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:18:51,035 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 02:18:51,035 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 02:18:51,035 INFO L87 Difference]: Start difference. First operand 903 states and 1419 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2025-02-06 02:18:51,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:18:51,336 INFO L93 Difference]: Finished difference Result 3292 states and 5138 transitions. [2025-02-06 02:18:51,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 02:18:51,336 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 421 [2025-02-06 02:18:51,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:18:51,352 INFO L225 Difference]: With dead ends: 3292 [2025-02-06 02:18:51,353 INFO L226 Difference]: Without dead ends: 2392 [2025-02-06 02:18:51,356 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 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 02:18:51,359 INFO L435 NwaCegarLoop]: 365 mSDtfsCounter, 341 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 865 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 02:18:51,359 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 865 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 02:18:51,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2392 states. [2025-02-06 02:18:51,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2392 to 1914. [2025-02-06 02:18:51,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1914 states, 1509 states have (on average 1.4678595096090126) internal successors, (2215), 1523 states have internal predecessors, (2215), 388 states have call successors, (388), 16 states have call predecessors, (388), 16 states have return successors, (388), 374 states have call predecessors, (388), 388 states have call successors, (388) [2025-02-06 02:18:51,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1914 states to 1914 states and 2991 transitions. [2025-02-06 02:18:51,556 INFO L78 Accepts]: Start accepts. Automaton has 1914 states and 2991 transitions. Word has length 421 [2025-02-06 02:18:51,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:18:51,556 INFO L471 AbstractCegarLoop]: Abstraction has 1914 states and 2991 transitions. [2025-02-06 02:18:51,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2025-02-06 02:18:51,557 INFO L276 IsEmpty]: Start isEmpty. Operand 1914 states and 2991 transitions. [2025-02-06 02:18:51,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2025-02-06 02:18:51,574 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:18:51,574 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:18:51,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 02:18:51,574 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:18:51,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:18:51,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1440911244, now seen corresponding path program 1 times [2025-02-06 02:18:51,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:18:51,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171621463] [2025-02-06 02:18:51,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:18:51,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:18:51,609 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 422 statements into 1 equivalence classes. [2025-02-06 02:18:52,003 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 422 of 422 statements. [2025-02-06 02:18:52,003 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:18:52,004 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:18:52,300 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 84 proven. 114 refuted. 0 times theorem prover too weak. 8646 trivial. 0 not checked. [2025-02-06 02:18:52,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:18:52,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171621463] [2025-02-06 02:18:52,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171621463] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:18:52,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106166145] [2025-02-06 02:18:52,300 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:18:52,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:18:52,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:18:52,303 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 02:18:52,307 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 02:18:52,391 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 422 statements into 1 equivalence classes. [2025-02-06 02:18:52,478 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 422 of 422 statements. [2025-02-06 02:18:52,479 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:18:52,479 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:18:52,482 INFO L256 TraceCheckSpWp]: Trace formula consists of 936 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 02:18:52,489 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:18:52,906 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 4378 proven. 114 refuted. 0 times theorem prover too weak. 4352 trivial. 0 not checked. [2025-02-06 02:18:52,906 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 02:18:53,292 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 84 proven. 114 refuted. 0 times theorem prover too weak. 8646 trivial. 0 not checked. [2025-02-06 02:18:53,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106166145] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 02:18:53,293 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 02:18:53,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2025-02-06 02:18:53,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013389455] [2025-02-06 02:18:53,293 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 02:18:53,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 02:18:53,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:18:53,294 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 02:18:53,295 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-02-06 02:18:53,295 INFO L87 Difference]: Start difference. First operand 1914 states and 2991 transitions. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 2 states have call successors, (105), 2 states have call predecessors, (105), 4 states have return successors, (106), 2 states have call predecessors, (106), 2 states have call successors, (106) [2025-02-06 02:18:53,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:18:53,716 INFO L93 Difference]: Finished difference Result 3873 states and 6023 transitions. [2025-02-06 02:18:53,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 02:18:53,720 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 2 states have call successors, (105), 2 states have call predecessors, (105), 4 states have return successors, (106), 2 states have call predecessors, (106), 2 states have call successors, (106) Word has length 422 [2025-02-06 02:18:53,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:18:53,729 INFO L225 Difference]: With dead ends: 3873 [2025-02-06 02:18:53,730 INFO L226 Difference]: Without dead ends: 1962 [2025-02-06 02:18:53,733 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 851 GetRequests, 841 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2025-02-06 02:18:53,734 INFO L435 NwaCegarLoop]: 231 mSDtfsCounter, 295 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 02:18:53,734 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 556 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 02:18:53,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1962 states. [2025-02-06 02:18:53,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1962 to 1916. [2025-02-06 02:18:53,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1916 states, 1513 states have (on average 1.4606741573033708) internal successors, (2210), 1527 states have internal predecessors, (2210), 384 states have call successors, (384), 18 states have call predecessors, (384), 18 states have return successors, (384), 370 states have call predecessors, (384), 384 states have call successors, (384) [2025-02-06 02:18:53,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1916 states to 1916 states and 2978 transitions. [2025-02-06 02:18:53,829 INFO L78 Accepts]: Start accepts. Automaton has 1916 states and 2978 transitions. Word has length 422 [2025-02-06 02:18:53,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:18:53,830 INFO L471 AbstractCegarLoop]: Abstraction has 1916 states and 2978 transitions. [2025-02-06 02:18:53,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 2 states have call successors, (105), 2 states have call predecessors, (105), 4 states have return successors, (106), 2 states have call predecessors, (106), 2 states have call successors, (106) [2025-02-06 02:18:53,830 INFO L276 IsEmpty]: Start isEmpty. Operand 1916 states and 2978 transitions. [2025-02-06 02:18:53,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2025-02-06 02:18:53,833 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:18:53,833 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:18:53,842 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 02:18:54,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:18:54,034 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:18:54,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:18:54,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1429595117, now seen corresponding path program 1 times [2025-02-06 02:18:54,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:18:54,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602509446] [2025-02-06 02:18:54,035 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:18:54,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:18:54,075 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 422 statements into 1 equivalence classes. [2025-02-06 02:18:54,611 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 422 of 422 statements. [2025-02-06 02:18:54,612 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:18:54,612 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:18:55,069 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 90 proven. 108 refuted. 0 times theorem prover too weak. 8646 trivial. 0 not checked. [2025-02-06 02:18:55,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:18:55,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602509446] [2025-02-06 02:18:55,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602509446] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:18:55,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096141735] [2025-02-06 02:18:55,070 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:18:55,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:18:55,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:18:55,073 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 02:18:55,078 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 02:18:55,162 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 422 statements into 1 equivalence classes. [2025-02-06 02:18:55,264 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 422 of 422 statements. [2025-02-06 02:18:55,264 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:18:55,264 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:18:55,268 INFO L256 TraceCheckSpWp]: Trace formula consists of 937 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-06 02:18:55,278 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:18:56,897 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 3057 proven. 159 refuted. 0 times theorem prover too weak. 5628 trivial. 0 not checked. [2025-02-06 02:18:56,900 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 02:18:57,403 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 39 proven. 159 refuted. 0 times theorem prover too weak. 8646 trivial. 0 not checked. [2025-02-06 02:18:57,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096141735] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 02:18:57,404 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 02:18:57,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 18 [2025-02-06 02:18:57,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227540845] [2025-02-06 02:18:57,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 02:18:57,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-06 02:18:57,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:18:57,406 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-06 02:18:57,407 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2025-02-06 02:18:57,407 INFO L87 Difference]: Start difference. First operand 1916 states and 2978 transitions. Second operand has 18 states, 18 states have (on average 11.777777777777779) internal successors, (212), 18 states have internal predecessors, (212), 8 states have call successors, (187), 4 states have call predecessors, (187), 7 states have return successors, (187), 8 states have call predecessors, (187), 8 states have call successors, (187) [2025-02-06 02:18:58,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:18:58,264 INFO L93 Difference]: Finished difference Result 3858 states and 5935 transitions. [2025-02-06 02:18:58,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-06 02:18:58,265 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 11.777777777777779) internal successors, (212), 18 states have internal predecessors, (212), 8 states have call successors, (187), 4 states have call predecessors, (187), 7 states have return successors, (187), 8 states have call predecessors, (187), 8 states have call successors, (187) Word has length 422 [2025-02-06 02:18:58,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:18:58,274 INFO L225 Difference]: With dead ends: 3858 [2025-02-06 02:18:58,274 INFO L226 Difference]: Without dead ends: 1695 [2025-02-06 02:18:58,278 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 861 GetRequests, 833 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=234, Invalid=636, Unknown=0, NotChecked=0, Total=870 [2025-02-06 02:18:58,279 INFO L435 NwaCegarLoop]: 187 mSDtfsCounter, 643 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 1049 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 643 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 1255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 1049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-06 02:18:58,279 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [643 Valid, 778 Invalid, 1255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 1049 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-06 02:18:58,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1695 states. [2025-02-06 02:18:58,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1695 to 1663. [2025-02-06 02:18:58,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1663 states, 1250 states have (on average 1.376) internal successors, (1720), 1264 states have internal predecessors, (1720), 384 states have call successors, (384), 28 states have call predecessors, (384), 28 states have return successors, (384), 370 states have call predecessors, (384), 384 states have call successors, (384) [2025-02-06 02:18:58,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1663 states to 1663 states and 2488 transitions. [2025-02-06 02:18:58,411 INFO L78 Accepts]: Start accepts. Automaton has 1663 states and 2488 transitions. Word has length 422 [2025-02-06 02:18:58,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:18:58,411 INFO L471 AbstractCegarLoop]: Abstraction has 1663 states and 2488 transitions. [2025-02-06 02:18:58,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 11.777777777777779) internal successors, (212), 18 states have internal predecessors, (212), 8 states have call successors, (187), 4 states have call predecessors, (187), 7 states have return successors, (187), 8 states have call predecessors, (187), 8 states have call successors, (187) [2025-02-06 02:18:58,412 INFO L276 IsEmpty]: Start isEmpty. Operand 1663 states and 2488 transitions. [2025-02-06 02:18:58,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2025-02-06 02:18:58,415 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:18:58,415 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:18:58,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-06 02:18:58,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:18:58,616 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:18:58,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:18:58,616 INFO L85 PathProgramCache]: Analyzing trace with hash -394104643, now seen corresponding path program 1 times [2025-02-06 02:18:58,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:18:58,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218221517] [2025-02-06 02:18:58,617 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:18:58,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:18:58,633 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 422 statements into 1 equivalence classes. [2025-02-06 02:18:58,829 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 422 of 422 statements. [2025-02-06 02:18:58,830 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:18:58,830 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:18:59,526 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 147 proven. 51 refuted. 0 times theorem prover too weak. 8646 trivial. 0 not checked. [2025-02-06 02:18:59,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:18:59,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218221517] [2025-02-06 02:18:59,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218221517] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:18:59,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868574564] [2025-02-06 02:18:59,526 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:18:59,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:18:59,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:18:59,529 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 02:18:59,537 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 02:18:59,630 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 422 statements into 1 equivalence classes. [2025-02-06 02:18:59,719 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 422 of 422 statements. [2025-02-06 02:18:59,720 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:18:59,720 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:18:59,724 INFO L256 TraceCheckSpWp]: Trace formula consists of 940 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-06 02:18:59,731 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:19:00,399 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 3496 proven. 51 refuted. 0 times theorem prover too weak. 5297 trivial. 0 not checked. [2025-02-06 02:19:00,400 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 02:19:00,886 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 147 proven. 51 refuted. 0 times theorem prover too weak. 8646 trivial. 0 not checked. [2025-02-06 02:19:00,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868574564] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 02:19:00,887 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 02:19:00,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 8] total 19 [2025-02-06 02:19:00,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448554777] [2025-02-06 02:19:00,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 02:19:00,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-06 02:19:00,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:19:00,889 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-06 02:19:00,891 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2025-02-06 02:19:00,892 INFO L87 Difference]: Start difference. First operand 1663 states and 2488 transitions. Second operand has 19 states, 19 states have (on average 10.0) internal successors, (190), 19 states have internal predecessors, (190), 5 states have call successors, (151), 3 states have call predecessors, (151), 6 states have return successors, (152), 5 states have call predecessors, (152), 5 states have call successors, (152) [2025-02-06 02:19:05,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:19:05,748 INFO L93 Difference]: Finished difference Result 12362 states and 18308 transitions. [2025-02-06 02:19:05,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2025-02-06 02:19:05,751 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 10.0) internal successors, (190), 19 states have internal predecessors, (190), 5 states have call successors, (151), 3 states have call predecessors, (151), 6 states have return successors, (152), 5 states have call predecessors, (152), 5 states have call successors, (152) Word has length 422 [2025-02-06 02:19:05,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:19:05,794 INFO L225 Difference]: With dead ends: 12362 [2025-02-06 02:19:05,795 INFO L226 Difference]: Without dead ends: 10702 [2025-02-06 02:19:05,806 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 924 GetRequests, 842 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2094 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1415, Invalid=5391, Unknown=0, NotChecked=0, Total=6806 [2025-02-06 02:19:05,807 INFO L435 NwaCegarLoop]: 672 mSDtfsCounter, 2019 mSDsluCounter, 4345 mSDsCounter, 0 mSdLazyCounter, 4006 mSolverCounterSat, 799 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2111 SdHoareTripleChecker+Valid, 5017 SdHoareTripleChecker+Invalid, 4805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 799 IncrementalHoareTripleChecker+Valid, 4006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2025-02-06 02:19:05,808 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2111 Valid, 5017 Invalid, 4805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [799 Valid, 4006 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2025-02-06 02:19:05,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10702 states. [2025-02-06 02:19:06,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10702 to 6723. [2025-02-06 02:19:06,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6723 states, 4984 states have (on average 1.3575441412520064) internal successors, (6766), 5045 states have internal predecessors, (6766), 1603 states have call successors, (1603), 135 states have call predecessors, (1603), 135 states have return successors, (1603), 1542 states have call predecessors, (1603), 1603 states have call successors, (1603) [2025-02-06 02:19:06,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6723 states to 6723 states and 9972 transitions. [2025-02-06 02:19:06,520 INFO L78 Accepts]: Start accepts. Automaton has 6723 states and 9972 transitions. Word has length 422 [2025-02-06 02:19:06,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:19:06,520 INFO L471 AbstractCegarLoop]: Abstraction has 6723 states and 9972 transitions. [2025-02-06 02:19:06,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 10.0) internal successors, (190), 19 states have internal predecessors, (190), 5 states have call successors, (151), 3 states have call predecessors, (151), 6 states have return successors, (152), 5 states have call predecessors, (152), 5 states have call successors, (152) [2025-02-06 02:19:06,525 INFO L276 IsEmpty]: Start isEmpty. Operand 6723 states and 9972 transitions. [2025-02-06 02:19:06,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2025-02-06 02:19:06,534 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:19:06,535 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:19:06,543 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 02:19:06,735 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 02:19:06,735 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:19:06,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:19:06,736 INFO L85 PathProgramCache]: Analyzing trace with hash 631387356, now seen corresponding path program 1 times [2025-02-06 02:19:06,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:19:06,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646116651] [2025-02-06 02:19:06,741 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:19:06,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:19:06,786 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 422 statements into 1 equivalence classes. [2025-02-06 02:19:07,193 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 422 of 422 statements. [2025-02-06 02:19:07,194 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:19:07,194 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:19:12,496 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 39 proven. 159 refuted. 0 times theorem prover too weak. 8646 trivial. 0 not checked. [2025-02-06 02:19:12,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:19:12,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646116651] [2025-02-06 02:19:12,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646116651] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:19:12,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190973373] [2025-02-06 02:19:12,497 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:19:12,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:19:12,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:19:12,499 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 02:19:12,501 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 02:19:12,590 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 422 statements into 1 equivalence classes. [2025-02-06 02:19:12,673 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 422 of 422 statements. [2025-02-06 02:19:12,673 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:19:12,673 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:19:12,677 INFO L256 TraceCheckSpWp]: Trace formula consists of 940 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-02-06 02:19:12,684 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:19:13,725 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 3577 proven. 93 refuted. 0 times theorem prover too weak. 5174 trivial. 0 not checked. [2025-02-06 02:19:13,725 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 02:19:14,327 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 297 proven. 96 refuted. 0 times theorem prover too weak. 8451 trivial. 0 not checked. [2025-02-06 02:19:14,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190973373] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 02:19:14,328 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 02:19:14,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 11] total 30 [2025-02-06 02:19:14,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487035887] [2025-02-06 02:19:14,328 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 02:19:14,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2025-02-06 02:19:14,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:19:14,330 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2025-02-06 02:19:14,330 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=741, Unknown=0, NotChecked=0, Total=870 [2025-02-06 02:19:14,335 INFO L87 Difference]: Start difference. First operand 6723 states and 9972 transitions. Second operand has 30 states, 30 states have (on average 7.933333333333334) internal successors, (238), 30 states have internal predecessors, (238), 8 states have call successors, (194), 4 states have call predecessors, (194), 9 states have return successors, (194), 8 states have call predecessors, (194), 8 states have call successors, (194) [2025-02-06 02:19:47,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:19:47,630 INFO L93 Difference]: Finished difference Result 22650 states and 33024 transitions. [2025-02-06 02:19:47,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 258 states. [2025-02-06 02:19:47,631 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 7.933333333333334) internal successors, (238), 30 states have internal predecessors, (238), 8 states have call successors, (194), 4 states have call predecessors, (194), 9 states have return successors, (194), 8 states have call predecessors, (194), 8 states have call successors, (194) Word has length 422 [2025-02-06 02:19:47,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:19:47,708 INFO L225 Difference]: With dead ends: 22650 [2025-02-06 02:19:47,708 INFO L226 Difference]: Without dead ends: 16061 [2025-02-06 02:19:47,738 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1157 GetRequests, 874 SyntacticMatches, 1 SemanticMatches, 282 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34976 ImplicationChecksByTransitivity, 17.8s TimeCoverageRelationStatistics Valid=9724, Invalid=70648, Unknown=0, NotChecked=0, Total=80372 [2025-02-06 02:19:47,739 INFO L435 NwaCegarLoop]: 1123 mSDtfsCounter, 6804 mSDsluCounter, 8013 mSDsCounter, 0 mSdLazyCounter, 14693 mSolverCounterSat, 2640 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6817 SdHoareTripleChecker+Valid, 9136 SdHoareTripleChecker+Invalid, 17333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2640 IncrementalHoareTripleChecker+Valid, 14693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2025-02-06 02:19:47,739 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6817 Valid, 9136 Invalid, 17333 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2640 Valid, 14693 Invalid, 0 Unknown, 0 Unchecked, 14.3s Time] [2025-02-06 02:19:47,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16061 states. [2025-02-06 02:19:49,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16061 to 9699. [2025-02-06 02:19:49,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9699 states, 7542 states have (on average 1.3670114028109255) internal successors, (10310), 7637 states have internal predecessors, (10310), 1926 states have call successors, (1926), 230 states have call predecessors, (1926), 230 states have return successors, (1926), 1831 states have call predecessors, (1926), 1926 states have call successors, (1926) [2025-02-06 02:19:49,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9699 states to 9699 states and 14162 transitions. [2025-02-06 02:19:49,148 INFO L78 Accepts]: Start accepts. Automaton has 9699 states and 14162 transitions. Word has length 422 [2025-02-06 02:19:49,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:19:49,151 INFO L471 AbstractCegarLoop]: Abstraction has 9699 states and 14162 transitions. [2025-02-06 02:19:49,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 7.933333333333334) internal successors, (238), 30 states have internal predecessors, (238), 8 states have call successors, (194), 4 states have call predecessors, (194), 9 states have return successors, (194), 8 states have call predecessors, (194), 8 states have call successors, (194) [2025-02-06 02:19:49,153 INFO L276 IsEmpty]: Start isEmpty. Operand 9699 states and 14162 transitions. [2025-02-06 02:19:49,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2025-02-06 02:19:49,170 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:19:49,170 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:19:49,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-02-06 02:19:49,370 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 02:19:49,371 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:19:49,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:19:49,372 INFO L85 PathProgramCache]: Analyzing trace with hash 864076583, now seen corresponding path program 1 times [2025-02-06 02:19:49,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:19:49,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713209561] [2025-02-06 02:19:49,373 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:19:49,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:19:49,392 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 423 statements into 1 equivalence classes. [2025-02-06 02:19:50,165 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 423 of 423 statements. [2025-02-06 02:19:50,166 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:19:50,166 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:19:51,782 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 39 proven. 159 refuted. 0 times theorem prover too weak. 8646 trivial. 0 not checked. [2025-02-06 02:19:51,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:19:51,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713209561] [2025-02-06 02:19:51,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713209561] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:19:51,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339220682] [2025-02-06 02:19:51,783 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:19:51,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:19:51,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:19:51,785 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 02:19:51,787 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 02:19:51,884 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 423 statements into 1 equivalence classes. [2025-02-06 02:19:51,997 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 423 of 423 statements. [2025-02-06 02:19:51,997 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:19:51,997 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:19:52,001 INFO L256 TraceCheckSpWp]: Trace formula consists of 940 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-02-06 02:19:52,010 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:19:54,260 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 3497 proven. 303 refuted. 0 times theorem prover too weak. 5044 trivial. 0 not checked. [2025-02-06 02:19:54,260 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 02:19:59,001 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 39 proven. 159 refuted. 0 times theorem prover too weak. 8646 trivial. 0 not checked. [2025-02-06 02:19:59,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339220682] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 02:19:59,002 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 02:19:59,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 8] total 20 [2025-02-06 02:19:59,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004465367] [2025-02-06 02:19:59,002 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 02:19:59,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-06 02:19:59,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:19:59,003 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-06 02:19:59,003 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2025-02-06 02:19:59,004 INFO L87 Difference]: Start difference. First operand 9699 states and 14162 transitions. Second operand has 20 states, 20 states have (on average 11.5) internal successors, (230), 20 states have internal predecessors, (230), 4 states have call successors, (173), 3 states have call predecessors, (173), 6 states have return successors, (174), 4 states have call predecessors, (174), 4 states have call successors, (174)