./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-50.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 551b0097 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_fillercode_fillercodesize_ps-cn-250_file-50.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 6b45ccb3e1d6d85a9c8f7f52288c3291e482bbcbd2ab4e741715d19987b56944 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 09:43:39,602 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 09:43:39,675 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 09:43:39,678 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 09:43:39,678 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 09:43:39,705 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 09:43:39,707 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 09:43:39,709 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 09:43:39,710 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 09:43:39,710 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 09:43:39,710 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 09:43:39,710 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 09:43:39,710 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 09:43:39,710 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 09:43:39,710 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 09:43:39,710 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 09:43:39,710 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 09:43:39,710 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 09:43:39,710 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 09:43:39,710 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 09:43:39,710 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 09:43:39,711 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 09:43:39,711 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 09:43:39,711 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 09:43:39,711 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 09:43:39,711 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 09:43:39,711 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 09:43:39,711 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 09:43:39,711 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 09:43:39,711 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 09:43:39,711 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 09:43:39,711 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 09:43:39,711 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 09:43:39,711 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 09:43:39,711 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 09:43:39,711 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 09:43:39,711 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 09:43:39,711 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 09:43:39,711 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 09:43:39,711 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 09:43:39,711 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 09:43:39,711 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 09:43:39,711 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 09:43:39,712 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 09:43:39,712 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 09:43:39,712 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 09:43:39,712 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 09:43:39,712 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 09:43:39,712 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 -> 6b45ccb3e1d6d85a9c8f7f52288c3291e482bbcbd2ab4e741715d19987b56944 [2025-01-09 09:43:39,970 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 09:43:39,975 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 09:43:39,977 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 09:43:39,978 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 09:43:39,978 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 09:43:39,978 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-50.i [2025-01-09 09:43:41,123 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bb282b720/638178356c004051a5cc2651d56e63ef/FLAGacd250c8e [2025-01-09 09:43:41,481 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 09:43:41,481 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-50.i [2025-01-09 09:43:41,493 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bb282b720/638178356c004051a5cc2651d56e63ef/FLAGacd250c8e [2025-01-09 09:43:41,518 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bb282b720/638178356c004051a5cc2651d56e63ef [2025-01-09 09:43:41,524 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 09:43:41,526 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 09:43:41,526 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 09:43:41,526 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 09:43:41,534 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 09:43:41,535 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 09:43:41" (1/1) ... [2025-01-09 09:43:41,536 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41f9ca31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:43:41, skipping insertion in model container [2025-01-09 09:43:41,536 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 09:43:41" (1/1) ... [2025-01-09 09:43:41,562 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 09:43:41,664 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_fillercode_fillercodesize_ps-cn-250_file-50.i[916,929] [2025-01-09 09:43:41,788 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 09:43:41,805 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 09:43:41,813 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_fillercode_fillercodesize_ps-cn-250_file-50.i[916,929] [2025-01-09 09:43:41,858 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 09:43:41,882 INFO L204 MainTranslator]: Completed translation [2025-01-09 09:43:41,882 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:43:41 WrapperNode [2025-01-09 09:43:41,883 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 09:43:41,883 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 09:43:41,883 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 09:43:41,884 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 09:43:41,889 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:43:41" (1/1) ... [2025-01-09 09:43:41,904 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:43:41" (1/1) ... [2025-01-09 09:43:41,975 INFO L138 Inliner]: procedures = 26, calls = 90, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 556 [2025-01-09 09:43:41,976 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 09:43:41,977 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 09:43:41,977 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 09:43:41,977 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 09:43:41,984 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:43:41" (1/1) ... [2025-01-09 09:43:41,984 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:43:41" (1/1) ... [2025-01-09 09:43:41,994 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:43:41" (1/1) ... [2025-01-09 09:43:42,030 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]. [2025-01-09 09:43:42,032 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:43:41" (1/1) ... [2025-01-09 09:43:42,033 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:43:41" (1/1) ... [2025-01-09 09:43:42,056 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:43:41" (1/1) ... [2025-01-09 09:43:42,059 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:43:41" (1/1) ... [2025-01-09 09:43:42,065 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:43:41" (1/1) ... [2025-01-09 09:43:42,073 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:43:41" (1/1) ... [2025-01-09 09:43:42,076 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:43:41" (1/1) ... [2025-01-09 09:43:42,086 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 09:43:42,087 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 09:43:42,088 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 09:43:42,088 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 09:43:42,088 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:43:41" (1/1) ... [2025-01-09 09:43:42,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 09:43:42,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 09:43:42,111 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) [2025-01-09 09:43:42,115 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 [2025-01-09 09:43:42,131 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 09:43:42,131 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-01-09 09:43:42,131 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-01-09 09:43:42,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 09:43:42,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 09:43:42,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 09:43:42,238 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 09:43:42,240 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 09:43:43,027 INFO L? ?]: Removed 24 outVars from TransFormulas that were not future-live. [2025-01-09 09:43:43,028 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 09:43:43,041 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 09:43:43,042 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2025-01-09 09:43:43,042 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 09:43:43 BoogieIcfgContainer [2025-01-09 09:43:43,043 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 09:43:43,044 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 09:43:43,044 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 09:43:43,047 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 09:43:43,047 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 09:43:41" (1/3) ... [2025-01-09 09:43:43,049 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fc53311 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 09:43:43, skipping insertion in model container [2025-01-09 09:43:43,049 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:43:41" (2/3) ... [2025-01-09 09:43:43,049 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fc53311 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 09:43:43, skipping insertion in model container [2025-01-09 09:43:43,049 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 09:43:43" (3/3) ... [2025-01-09 09:43:43,050 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-50.i [2025-01-09 09:43:43,060 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 09:43:43,064 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-50.i that has 2 procedures, 234 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-01-09 09:43:43,113 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 09:43:43,122 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;@6aa08cf7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 09:43:43,122 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 09:43:43,127 INFO L276 IsEmpty]: Start isEmpty. Operand has 234 states, 154 states have (on average 1.5194805194805194) internal successors, (234), 155 states have internal predecessors, (234), 77 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) [2025-01-09 09:43:43,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2025-01-09 09:43:43,165 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 09:43:43,166 INFO L218 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 09:43:43,166 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 09:43:43,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 09:43:43,172 INFO L85 PathProgramCache]: Analyzing trace with hash 2128437851, now seen corresponding path program 1 times [2025-01-09 09:43:43,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 09:43:43,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558910892] [2025-01-09 09:43:43,179 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 09:43:43,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 09:43:43,291 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 483 statements into 1 equivalence classes. [2025-01-09 09:43:43,335 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 483 of 483 statements. [2025-01-09 09:43:43,339 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 09:43:43,339 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 09:43:43,624 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 152 refuted. 0 times theorem prover too weak. 11552 trivial. 0 not checked. [2025-01-09 09:43:43,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 09:43:43,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558910892] [2025-01-09 09:43:43,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558910892] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 09:43:43,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801205656] [2025-01-09 09:43:43,626 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 09:43:43,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 09:43:43,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 09:43:43,628 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) [2025-01-09 09:43:43,630 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 [2025-01-09 09:43:43,750 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 483 statements into 1 equivalence classes. [2025-01-09 09:43:43,872 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 483 of 483 statements. [2025-01-09 09:43:43,873 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 09:43:43,873 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 09:43:43,877 INFO L256 TraceCheckSpWp]: Trace formula consists of 1074 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-01-09 09:43:43,885 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 09:43:43,921 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 11552 trivial. 0 not checked. [2025-01-09 09:43:43,921 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 09:43:43,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801205656] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 09:43:43,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 09:43:43,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-01-09 09:43:43,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651193108] [2025-01-09 09:43:43,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 09:43:43,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-09 09:43:43,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 09:43:43,939 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-09 09:43:43,940 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 09:43:43,943 INFO L87 Difference]: Start difference. First operand has 234 states, 154 states have (on average 1.5194805194805194) internal successors, (234), 155 states have internal predecessors, (234), 77 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) Second operand has 2 states, 2 states have (on average 51.5) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (77), 2 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 2 states have call successors, (77) [2025-01-09 09:43:43,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 09:43:43,977 INFO L93 Difference]: Finished difference Result 462 states and 848 transitions. [2025-01-09 09:43:43,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-09 09:43:43,979 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 51.5) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (77), 2 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 2 states have call successors, (77) Word has length 483 [2025-01-09 09:43:43,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 09:43:43,985 INFO L225 Difference]: With dead ends: 462 [2025-01-09 09:43:43,985 INFO L226 Difference]: Without dead ends: 231 [2025-01-09 09:43:43,988 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 484 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 09:43:43,990 INFO L435 NwaCegarLoop]: 382 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 09:43:43,990 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 09:43:43,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2025-01-09 09:43:44,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2025-01-09 09:43:44,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 152 states have (on average 1.5) internal successors, (228), 152 states have internal predecessors, (228), 77 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) [2025-01-09 09:43:44,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 382 transitions. [2025-01-09 09:43:44,036 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 382 transitions. Word has length 483 [2025-01-09 09:43:44,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 09:43:44,036 INFO L471 AbstractCegarLoop]: Abstraction has 231 states and 382 transitions. [2025-01-09 09:43:44,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 51.5) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (77), 2 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 2 states have call successors, (77) [2025-01-09 09:43:44,037 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 382 transitions. [2025-01-09 09:43:44,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2025-01-09 09:43:44,042 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 09:43:44,043 INFO L218 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 09:43:44,052 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-09 09:43:44,243 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 [2025-01-09 09:43:44,244 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 09:43:44,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 09:43:44,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1624980447, now seen corresponding path program 1 times [2025-01-09 09:43:44,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 09:43:44,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353045470] [2025-01-09 09:43:44,245 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 09:43:44,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 09:43:44,270 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 483 statements into 1 equivalence classes. [2025-01-09 09:43:44,331 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 483 of 483 statements. [2025-01-09 09:43:44,331 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 09:43:44,331 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 09:43:44,577 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2025-01-09 09:43:44,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 09:43:44,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353045470] [2025-01-09 09:43:44,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353045470] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 09:43:44,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 09:43:44,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 09:43:44,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315726381] [2025-01-09 09:43:44,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 09:43:44,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 09:43:44,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 09:43:44,580 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 09:43:44,580 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 09:43:44,580 INFO L87 Difference]: Start difference. First operand 231 states and 382 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2025-01-09 09:43:44,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 09:43:44,645 INFO L93 Difference]: Finished difference Result 592 states and 983 transitions. [2025-01-09 09:43:44,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 09:43:44,646 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 483 [2025-01-09 09:43:44,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 09:43:44,651 INFO L225 Difference]: With dead ends: 592 [2025-01-09 09:43:44,653 INFO L226 Difference]: Without dead ends: 364 [2025-01-09 09:43:44,654 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 [2025-01-09 09:43:44,656 INFO L435 NwaCegarLoop]: 439 mSDtfsCounter, 227 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 797 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 09:43:44,657 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 797 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 09:43:44,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2025-01-09 09:43:44,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 361. [2025-01-09 09:43:44,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 259 states have (on average 1.5444015444015444) internal successors, (400), 260 states have internal predecessors, (400), 99 states have call successors, (99), 2 states have call predecessors, (99), 2 states have return successors, (99), 98 states have call predecessors, (99), 99 states have call successors, (99) [2025-01-09 09:43:44,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 598 transitions. [2025-01-09 09:43:44,708 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 598 transitions. Word has length 483 [2025-01-09 09:43:44,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 09:43:44,710 INFO L471 AbstractCegarLoop]: Abstraction has 361 states and 598 transitions. [2025-01-09 09:43:44,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2025-01-09 09:43:44,710 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 598 transitions. [2025-01-09 09:43:44,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2025-01-09 09:43:44,718 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 09:43:44,719 INFO L218 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 09:43:44,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 09:43:44,720 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 09:43:44,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 09:43:44,722 INFO L85 PathProgramCache]: Analyzing trace with hash -2093591025, now seen corresponding path program 1 times [2025-01-09 09:43:44,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 09:43:44,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224852702] [2025-01-09 09:43:44,722 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 09:43:44,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 09:43:44,758 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 483 statements into 1 equivalence classes. [2025-01-09 09:43:44,803 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 483 of 483 statements. [2025-01-09 09:43:44,803 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 09:43:44,803 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 09:43:45,061 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2025-01-09 09:43:45,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 09:43:45,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224852702] [2025-01-09 09:43:45,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224852702] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 09:43:45,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 09:43:45,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 09:43:45,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452116408] [2025-01-09 09:43:45,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 09:43:45,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 09:43:45,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 09:43:45,064 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 09:43:45,064 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 09:43:45,064 INFO L87 Difference]: Start difference. First operand 361 states and 598 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2025-01-09 09:43:45,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 09:43:45,117 INFO L93 Difference]: Finished difference Result 966 states and 1594 transitions. [2025-01-09 09:43:45,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 09:43:45,118 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 483 [2025-01-09 09:43:45,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 09:43:45,123 INFO L225 Difference]: With dead ends: 966 [2025-01-09 09:43:45,123 INFO L226 Difference]: Without dead ends: 608 [2025-01-09 09:43:45,124 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 [2025-01-09 09:43:45,125 INFO L435 NwaCegarLoop]: 418 mSDtfsCounter, 227 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 09:43:45,125 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 785 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 09:43:45,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2025-01-09 09:43:45,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 605. [2025-01-09 09:43:45,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 424 states have (on average 1.5070754716981132) internal successors, (639), 427 states have internal predecessors, (639), 176 states have call successors, (176), 4 states have call predecessors, (176), 4 states have return successors, (176), 173 states have call predecessors, (176), 176 states have call successors, (176) [2025-01-09 09:43:45,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 991 transitions. [2025-01-09 09:43:45,197 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 991 transitions. Word has length 483 [2025-01-09 09:43:45,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 09:43:45,198 INFO L471 AbstractCegarLoop]: Abstraction has 605 states and 991 transitions. [2025-01-09 09:43:45,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2025-01-09 09:43:45,198 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 991 transitions. [2025-01-09 09:43:45,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2025-01-09 09:43:45,203 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 09:43:45,204 INFO L218 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 09:43:45,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-09 09:43:45,204 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 09:43:45,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 09:43:45,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1357370769, now seen corresponding path program 1 times [2025-01-09 09:43:45,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 09:43:45,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762248667] [2025-01-09 09:43:45,205 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 09:43:45,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 09:43:45,230 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 483 statements into 1 equivalence classes. [2025-01-09 09:43:45,290 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 483 of 483 statements. [2025-01-09 09:43:45,290 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 09:43:45,291 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 09:43:45,601 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2025-01-09 09:43:45,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 09:43:45,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762248667] [2025-01-09 09:43:45,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762248667] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 09:43:45,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 09:43:45,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 09:43:45,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560448637] [2025-01-09 09:43:45,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 09:43:45,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 09:43:45,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 09:43:45,603 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 09:43:45,603 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 09:43:45,603 INFO L87 Difference]: Start difference. First operand 605 states and 991 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2025-01-09 09:43:45,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 09:43:45,946 INFO L93 Difference]: Finished difference Result 1805 states and 2959 transitions. [2025-01-09 09:43:45,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 09:43:45,947 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 483 [2025-01-09 09:43:45,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 09:43:45,957 INFO L225 Difference]: With dead ends: 1805 [2025-01-09 09:43:45,957 INFO L226 Difference]: Without dead ends: 1203 [2025-01-09 09:43:45,959 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-09 09:43:45,962 INFO L435 NwaCegarLoop]: 378 mSDtfsCounter, 375 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 967 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 09:43:45,962 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 967 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 09:43:45,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2025-01-09 09:43:46,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 621. [2025-01-09 09:43:46,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 621 states, 440 states have (on average 1.4977272727272728) internal successors, (659), 443 states have internal predecessors, (659), 176 states have call successors, (176), 4 states have call predecessors, (176), 4 states have return successors, (176), 173 states have call predecessors, (176), 176 states have call successors, (176) [2025-01-09 09:43:46,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 1011 transitions. [2025-01-09 09:43:46,053 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 1011 transitions. Word has length 483 [2025-01-09 09:43:46,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 09:43:46,054 INFO L471 AbstractCegarLoop]: Abstraction has 621 states and 1011 transitions. [2025-01-09 09:43:46,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2025-01-09 09:43:46,054 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 1011 transitions. [2025-01-09 09:43:46,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2025-01-09 09:43:46,059 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 09:43:46,059 INFO L218 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 09:43:46,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-09 09:43:46,060 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 09:43:46,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 09:43:46,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1162589165, now seen corresponding path program 1 times [2025-01-09 09:43:46,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 09:43:46,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313417188] [2025-01-09 09:43:46,060 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 09:43:46,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 09:43:46,084 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 483 statements into 1 equivalence classes. [2025-01-09 09:43:46,261 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 483 of 483 statements. [2025-01-09 09:43:46,261 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 09:43:46,261 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 09:43:46,576 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2025-01-09 09:43:46,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 09:43:46,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313417188] [2025-01-09 09:43:46,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313417188] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 09:43:46,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 09:43:46,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 09:43:46,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456597128] [2025-01-09 09:43:46,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 09:43:46,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 09:43:46,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 09:43:46,578 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 09:43:46,578 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 09:43:46,578 INFO L87 Difference]: Start difference. First operand 621 states and 1011 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2025-01-09 09:43:46,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 09:43:46,629 INFO L93 Difference]: Finished difference Result 1243 states and 2027 transitions. [2025-01-09 09:43:46,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 09:43:46,630 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 483 [2025-01-09 09:43:46,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 09:43:46,635 INFO L225 Difference]: With dead ends: 1243 [2025-01-09 09:43:46,635 INFO L226 Difference]: Without dead ends: 625 [2025-01-09 09:43:46,637 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 [2025-01-09 09:43:46,637 INFO L435 NwaCegarLoop]: 381 mSDtfsCounter, 0 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 09:43:46,638 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 756 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 09:43:46,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2025-01-09 09:43:46,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 625. [2025-01-09 09:43:46,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625 states, 444 states have (on average 1.4932432432432432) internal successors, (663), 447 states have internal predecessors, (663), 176 states have call successors, (176), 4 states have call predecessors, (176), 4 states have return successors, (176), 173 states have call predecessors, (176), 176 states have call successors, (176) [2025-01-09 09:43:46,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1015 transitions. [2025-01-09 09:43:46,682 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1015 transitions. Word has length 483 [2025-01-09 09:43:46,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 09:43:46,683 INFO L471 AbstractCegarLoop]: Abstraction has 625 states and 1015 transitions. [2025-01-09 09:43:46,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2025-01-09 09:43:46,683 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1015 transitions. [2025-01-09 09:43:46,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2025-01-09 09:43:46,688 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 09:43:46,688 INFO L218 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 09:43:46,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-09 09:43:46,688 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 09:43:46,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 09:43:46,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1100549551, now seen corresponding path program 1 times [2025-01-09 09:43:46,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 09:43:46,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922005969] [2025-01-09 09:43:46,689 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 09:43:46,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 09:43:46,714 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 483 statements into 1 equivalence classes. [2025-01-09 09:43:46,865 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 483 of 483 statements. [2025-01-09 09:43:46,865 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 09:43:46,865 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 09:43:47,305 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2025-01-09 09:43:47,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 09:43:47,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922005969] [2025-01-09 09:43:47,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922005969] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 09:43:47,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 09:43:47,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 09:43:47,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745641042] [2025-01-09 09:43:47,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 09:43:47,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 09:43:47,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 09:43:47,308 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 09:43:47,308 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-09 09:43:47,308 INFO L87 Difference]: Start difference. First operand 625 states and 1015 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2025-01-09 09:43:47,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 09:43:47,880 INFO L93 Difference]: Finished difference Result 1958 states and 3135 transitions. [2025-01-09 09:43:47,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 09:43:47,880 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 483 [2025-01-09 09:43:47,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 09:43:47,892 INFO L225 Difference]: With dead ends: 1958 [2025-01-09 09:43:47,892 INFO L226 Difference]: Without dead ends: 1336 [2025-01-09 09:43:47,895 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-01-09 09:43:47,895 INFO L435 NwaCegarLoop]: 349 mSDtfsCounter, 739 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-09 09:43:47,895 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [739 Valid, 850 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-09 09:43:47,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1336 states. [2025-01-09 09:43:47,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1336 to 820. [2025-01-09 09:43:47,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 635 states have (on average 1.5511811023622046) internal successors, (985), 638 states have internal predecessors, (985), 176 states have call successors, (176), 8 states have call predecessors, (176), 8 states have return successors, (176), 173 states have call predecessors, (176), 176 states have call successors, (176) [2025-01-09 09:43:47,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1337 transitions. [2025-01-09 09:43:47,963 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1337 transitions. Word has length 483 [2025-01-09 09:43:47,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 09:43:47,963 INFO L471 AbstractCegarLoop]: Abstraction has 820 states and 1337 transitions. [2025-01-09 09:43:47,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2025-01-09 09:43:47,964 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1337 transitions. [2025-01-09 09:43:47,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2025-01-09 09:43:47,968 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 09:43:47,969 INFO L218 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 09:43:47,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-01-09 09:43:47,969 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 09:43:47,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 09:43:47,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1200273039, now seen corresponding path program 1 times [2025-01-09 09:43:47,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 09:43:47,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172613378] [2025-01-09 09:43:47,970 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 09:43:47,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 09:43:47,993 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 483 statements into 1 equivalence classes. [2025-01-09 09:43:48,138 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 483 of 483 statements. [2025-01-09 09:43:48,140 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 09:43:48,141 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 09:43:48,961 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2025-01-09 09:43:48,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 09:43:48,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172613378] [2025-01-09 09:43:48,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172613378] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 09:43:48,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 09:43:48,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 09:43:48,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351788028] [2025-01-09 09:43:48,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 09:43:48,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 09:43:48,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 09:43:48,962 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 09:43:48,962 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-09 09:43:48,962 INFO L87 Difference]: Start difference. First operand 820 states and 1337 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2025-01-09 09:43:49,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 09:43:49,724 INFO L93 Difference]: Finished difference Result 3561 states and 5792 transitions. [2025-01-09 09:43:49,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 09:43:49,724 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 483 [2025-01-09 09:43:49,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 09:43:49,737 INFO L225 Difference]: With dead ends: 3561 [2025-01-09 09:43:49,737 INFO L226 Difference]: Without dead ends: 2744 [2025-01-09 09:43:49,739 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2025-01-09 09:43:49,740 INFO L435 NwaCegarLoop]: 461 mSDtfsCounter, 749 mSDsluCounter, 861 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 294 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 749 SdHoareTripleChecker+Valid, 1322 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 294 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-01-09 09:43:49,740 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [749 Valid, 1322 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [294 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-01-09 09:43:49,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2744 states. [2025-01-09 09:43:49,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2744 to 1748. [2025-01-09 09:43:49,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1748 states, 1439 states have (on average 1.5656706045865185) internal successors, (2253), 1446 states have internal predecessors, (2253), 292 states have call successors, (292), 16 states have call predecessors, (292), 16 states have return successors, (292), 285 states have call predecessors, (292), 292 states have call successors, (292) [2025-01-09 09:43:49,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1748 states to 1748 states and 2837 transitions. [2025-01-09 09:43:49,875 INFO L78 Accepts]: Start accepts. Automaton has 1748 states and 2837 transitions. Word has length 483 [2025-01-09 09:43:49,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 09:43:49,875 INFO L471 AbstractCegarLoop]: Abstraction has 1748 states and 2837 transitions. [2025-01-09 09:43:49,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2025-01-09 09:43:49,876 INFO L276 IsEmpty]: Start isEmpty. Operand 1748 states and 2837 transitions. [2025-01-09 09:43:49,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2025-01-09 09:43:49,881 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 09:43:49,881 INFO L218 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 09:43:49,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-01-09 09:43:49,881 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 09:43:49,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 09:43:49,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1340821649, now seen corresponding path program 1 times [2025-01-09 09:43:49,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 09:43:49,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408131391] [2025-01-09 09:43:49,882 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 09:43:49,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 09:43:49,903 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 483 statements into 1 equivalence classes. [2025-01-09 09:43:50,043 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 483 of 483 statements. [2025-01-09 09:43:50,044 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 09:43:50,044 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 09:43:50,295 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 165 proven. 63 refuted. 0 times theorem prover too weak. 11476 trivial. 0 not checked. [2025-01-09 09:43:50,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 09:43:50,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408131391] [2025-01-09 09:43:50,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408131391] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 09:43:50,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717404368] [2025-01-09 09:43:50,296 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 09:43:50,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 09:43:50,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 09:43:50,300 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) [2025-01-09 09:43:50,305 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 [2025-01-09 09:43:50,428 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 483 statements into 1 equivalence classes. [2025-01-09 09:43:50,541 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 483 of 483 statements. [2025-01-09 09:43:50,541 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 09:43:50,541 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 09:43:50,546 INFO L256 TraceCheckSpWp]: Trace formula consists of 1073 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-09 09:43:50,554 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 09:43:50,816 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 4806 proven. 63 refuted. 0 times theorem prover too weak. 6835 trivial. 0 not checked. [2025-01-09 09:43:50,816 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 09:43:51,239 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 165 proven. 63 refuted. 0 times theorem prover too weak. 11476 trivial. 0 not checked. [2025-01-09 09:43:51,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [717404368] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 09:43:51,239 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 09:43:51,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2025-01-09 09:43:51,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873805149] [2025-01-09 09:43:51,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 09:43:51,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 09:43:51,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 09:43:51,241 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 09:43:51,241 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-01-09 09:43:51,241 INFO L87 Difference]: Start difference. First operand 1748 states and 2837 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 2 states have call successors, (98), 2 states have call predecessors, (98), 4 states have return successors, (99), 2 states have call predecessors, (99), 2 states have call successors, (99) [2025-01-09 09:43:51,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 09:43:51,690 INFO L93 Difference]: Finished difference Result 2811 states and 4556 transitions. [2025-01-09 09:43:51,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 09:43:51,691 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 2 states have call successors, (98), 2 states have call predecessors, (98), 4 states have return successors, (99), 2 states have call predecessors, (99), 2 states have call successors, (99) Word has length 483 [2025-01-09 09:43:51,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 09:43:51,697 INFO L225 Difference]: With dead ends: 2811 [2025-01-09 09:43:51,697 INFO L226 Difference]: Without dead ends: 1066 [2025-01-09 09:43:51,700 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 972 GetRequests, 963 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2025-01-09 09:43:51,700 INFO L435 NwaCegarLoop]: 295 mSDtfsCounter, 444 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 09:43:51,700 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [499 Valid, 728 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 09:43:51,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2025-01-09 09:43:51,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1048. [2025-01-09 09:43:51,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1048 states, 880 states have (on average 1.565909090909091) internal successors, (1378), 883 states have internal predecessors, (1378), 157 states have call successors, (157), 10 states have call predecessors, (157), 10 states have return successors, (157), 154 states have call predecessors, (157), 157 states have call successors, (157) [2025-01-09 09:43:51,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1048 states to 1048 states and 1692 transitions. [2025-01-09 09:43:51,749 INFO L78 Accepts]: Start accepts. Automaton has 1048 states and 1692 transitions. Word has length 483 [2025-01-09 09:43:51,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 09:43:51,750 INFO L471 AbstractCegarLoop]: Abstraction has 1048 states and 1692 transitions. [2025-01-09 09:43:51,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 2 states have call successors, (98), 2 states have call predecessors, (98), 4 states have return successors, (99), 2 states have call predecessors, (99), 2 states have call successors, (99) [2025-01-09 09:43:51,751 INFO L276 IsEmpty]: Start isEmpty. Operand 1048 states and 1692 transitions. [2025-01-09 09:43:51,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2025-01-09 09:43:51,754 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 09:43:51,754 INFO L218 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 09:43:51,766 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-09 09:43:51,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 09:43:51,958 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 09:43:51,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 09:43:51,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1273337460, now seen corresponding path program 1 times [2025-01-09 09:43:51,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 09:43:51,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688421006] [2025-01-09 09:43:51,963 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 09:43:51,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 09:43:51,998 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 484 statements into 1 equivalence classes. [2025-01-09 09:43:52,152 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 484 of 484 statements. [2025-01-09 09:43:52,152 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 09:43:52,152 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 09:43:52,959 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 105 proven. 345 refuted. 0 times theorem prover too weak. 11254 trivial. 0 not checked. [2025-01-09 09:43:52,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 09:43:52,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688421006] [2025-01-09 09:43:52,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688421006] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 09:43:52,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015379409] [2025-01-09 09:43:52,960 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 09:43:52,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 09:43:52,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 09:43:52,962 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) [2025-01-09 09:43:52,969 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 [2025-01-09 09:43:53,099 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 484 statements into 1 equivalence classes. [2025-01-09 09:43:53,245 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 484 of 484 statements. [2025-01-09 09:43:53,245 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 09:43:53,245 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 09:43:53,249 INFO L256 TraceCheckSpWp]: Trace formula consists of 1074 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-01-09 09:43:53,256 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 09:43:54,846 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 4413 proven. 345 refuted. 0 times theorem prover too weak. 6946 trivial. 0 not checked. [2025-01-09 09:43:54,847 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 09:43:56,000 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 105 proven. 348 refuted. 0 times theorem prover too weak. 11251 trivial. 0 not checked. [2025-01-09 09:43:56,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015379409] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 09:43:56,000 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 09:43:56,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 12] total 23 [2025-01-09 09:43:56,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399106635] [2025-01-09 09:43:56,001 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 09:43:56,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-01-09 09:43:56,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 09:43:56,002 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-01-09 09:43:56,002 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2025-01-09 09:43:56,003 INFO L87 Difference]: Start difference. First operand 1048 states and 1692 transitions. Second operand has 23 states, 23 states have (on average 11.956521739130435) internal successors, (275), 23 states have internal predecessors, (275), 6 states have call successors, (195), 3 states have call predecessors, (195), 7 states have return successors, (196), 6 states have call predecessors, (196), 6 states have call successors, (196) [2025-01-09 09:43:58,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 09:43:58,639 INFO L93 Difference]: Finished difference Result 3300 states and 5228 transitions. [2025-01-09 09:43:58,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2025-01-09 09:43:58,640 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 11.956521739130435) internal successors, (275), 23 states have internal predecessors, (275), 6 states have call successors, (195), 3 states have call predecessors, (195), 7 states have return successors, (196), 6 states have call predecessors, (196), 6 states have call successors, (196) Word has length 484 [2025-01-09 09:43:58,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 09:43:58,651 INFO L225 Difference]: With dead ends: 3300 [2025-01-09 09:43:58,651 INFO L226 Difference]: Without dead ends: 2255 [2025-01-09 09:43:58,654 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1012 GetRequests, 962 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=629, Invalid=2023, Unknown=0, NotChecked=0, Total=2652 [2025-01-09 09:43:58,655 INFO L435 NwaCegarLoop]: 564 mSDtfsCounter, 1459 mSDsluCounter, 3708 mSDsCounter, 0 mSdLazyCounter, 2574 mSolverCounterSat, 767 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1479 SdHoareTripleChecker+Valid, 4272 SdHoareTripleChecker+Invalid, 3341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 767 IncrementalHoareTripleChecker+Valid, 2574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-01-09 09:43:58,655 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1479 Valid, 4272 Invalid, 3341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [767 Valid, 2574 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-01-09 09:43:58,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2255 states. [2025-01-09 09:43:58,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2255 to 1088. [2025-01-09 09:43:58,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1088 states, 912 states have (on average 1.5460526315789473) internal successors, (1410), 915 states have internal predecessors, (1410), 157 states have call successors, (157), 18 states have call predecessors, (157), 18 states have return successors, (157), 154 states have call predecessors, (157), 157 states have call successors, (157) [2025-01-09 09:43:58,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1088 states to 1088 states and 1724 transitions. [2025-01-09 09:43:58,730 INFO L78 Accepts]: Start accepts. Automaton has 1088 states and 1724 transitions. Word has length 484 [2025-01-09 09:43:58,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 09:43:58,732 INFO L471 AbstractCegarLoop]: Abstraction has 1088 states and 1724 transitions. [2025-01-09 09:43:58,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 11.956521739130435) internal successors, (275), 23 states have internal predecessors, (275), 6 states have call successors, (195), 3 states have call predecessors, (195), 7 states have return successors, (196), 6 states have call predecessors, (196), 6 states have call successors, (196) [2025-01-09 09:43:58,732 INFO L276 IsEmpty]: Start isEmpty. Operand 1088 states and 1724 transitions. [2025-01-09 09:43:58,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2025-01-09 09:43:58,735 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 09:43:58,736 INFO L218 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 09:43:58,745 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-01-09 09:43:58,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 09:43:58,940 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 09:43:58,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 09:43:58,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1947687052, now seen corresponding path program 1 times [2025-01-09 09:43:58,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 09:43:58,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657020042] [2025-01-09 09:43:58,941 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 09:43:58,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 09:43:58,960 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 484 statements into 1 equivalence classes. [2025-01-09 09:43:58,976 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 484 of 484 statements. [2025-01-09 09:43:58,977 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 09:43:58,977 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 09:43:59,113 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2025-01-09 09:43:59,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 09:43:59,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657020042] [2025-01-09 09:43:59,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657020042] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 09:43:59,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 09:43:59,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 09:43:59,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455126911] [2025-01-09 09:43:59,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 09:43:59,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 09:43:59,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 09:43:59,115 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 09:43:59,115 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 09:43:59,115 INFO L87 Difference]: Start difference. First operand 1088 states and 1724 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2025-01-09 09:43:59,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 09:43:59,374 INFO L93 Difference]: Finished difference Result 2173 states and 3445 transitions. [2025-01-09 09:43:59,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 09:43:59,375 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 484 [2025-01-09 09:43:59,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 09:43:59,380 INFO L225 Difference]: With dead ends: 2173 [2025-01-09 09:43:59,381 INFO L226 Difference]: Without dead ends: 1088 [2025-01-09 09:43:59,382 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-09 09:43:59,383 INFO L435 NwaCegarLoop]: 373 mSDtfsCounter, 371 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 09:43:59,383 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 587 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 09:43:59,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1088 states. [2025-01-09 09:43:59,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1088 to 1072. [2025-01-09 09:43:59,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1072 states, 896 states have (on average 1.546875) internal successors, (1386), 899 states have internal predecessors, (1386), 157 states have call successors, (157), 18 states have call predecessors, (157), 18 states have return successors, (157), 154 states have call predecessors, (157), 157 states have call successors, (157) [2025-01-09 09:43:59,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1072 states to 1072 states and 1700 transitions. [2025-01-09 09:43:59,441 INFO L78 Accepts]: Start accepts. Automaton has 1072 states and 1700 transitions. Word has length 484 [2025-01-09 09:43:59,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 09:43:59,441 INFO L471 AbstractCegarLoop]: Abstraction has 1072 states and 1700 transitions. [2025-01-09 09:43:59,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2025-01-09 09:43:59,442 INFO L276 IsEmpty]: Start isEmpty. Operand 1072 states and 1700 transitions. [2025-01-09 09:43:59,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2025-01-09 09:43:59,465 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 09:43:59,465 INFO L218 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 09:43:59,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-01-09 09:43:59,466 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 09:43:59,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 09:43:59,466 INFO L85 PathProgramCache]: Analyzing trace with hash -572272882, now seen corresponding path program 1 times [2025-01-09 09:43:59,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 09:43:59,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375817055] [2025-01-09 09:43:59,466 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 09:43:59,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 09:43:59,488 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 484 statements into 1 equivalence classes. [2025-01-09 09:43:59,668 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 484 of 484 statements. [2025-01-09 09:43:59,668 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 09:43:59,668 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 09:43:59,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1406736721] [2025-01-09 09:43:59,675 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 09:43:59,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 09:43:59,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 09:43:59,679 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) [2025-01-09 09:43:59,680 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 [2025-01-09 09:43:59,803 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 484 statements into 1 equivalence classes. [2025-01-09 09:43:59,943 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 484 of 484 statements. [2025-01-09 09:43:59,944 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 09:43:59,944 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 09:43:59,948 INFO L256 TraceCheckSpWp]: Trace formula consists of 1073 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-01-09 09:43:59,959 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 09:44:00,792 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 4738 proven. 165 refuted. 0 times theorem prover too weak. 6801 trivial. 0 not checked. [2025-01-09 09:44:00,792 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 09:44:01,174 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2025-01-09 09:44:01,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 09:44:01,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375817055] [2025-01-09 09:44:01,176 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-09 09:44:01,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406736721] [2025-01-09 09:44:01,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406736721] provided 1 perfect and 1 imperfect interpolant sequences [2025-01-09 09:44:01,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 09:44:01,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2025-01-09 09:44:01,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163478160] [2025-01-09 09:44:01,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 09:44:01,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 09:44:01,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 09:44:01,177 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 09:44:01,177 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2025-01-09 09:44:01,177 INFO L87 Difference]: Start difference. First operand 1072 states and 1700 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2025-01-09 09:44:01,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 09:44:01,566 INFO L93 Difference]: Finished difference Result 3355 states and 5256 transitions. [2025-01-09 09:44:01,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 09:44:01,567 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 484 [2025-01-09 09:44:01,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 09:44:01,576 INFO L225 Difference]: With dead ends: 3355 [2025-01-09 09:44:01,576 INFO L226 Difference]: Without dead ends: 2286 [2025-01-09 09:44:01,578 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 966 GetRequests, 954 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2025-01-09 09:44:01,579 INFO L435 NwaCegarLoop]: 632 mSDtfsCounter, 798 mSDsluCounter, 1035 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 798 SdHoareTripleChecker+Valid, 1667 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 09:44:01,580 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [798 Valid, 1667 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 09:44:01,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2286 states. [2025-01-09 09:44:01,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2286 to 1683. [2025-01-09 09:44:01,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1683 states, 1393 states have (on average 1.5326633165829147) internal successors, (2135), 1400 states have internal predecessors, (2135), 255 states have call successors, (255), 34 states have call predecessors, (255), 34 states have return successors, (255), 248 states have call predecessors, (255), 255 states have call successors, (255) [2025-01-09 09:44:01,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1683 states to 1683 states and 2645 transitions. [2025-01-09 09:44:01,688 INFO L78 Accepts]: Start accepts. Automaton has 1683 states and 2645 transitions. Word has length 484 [2025-01-09 09:44:01,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 09:44:01,689 INFO L471 AbstractCegarLoop]: Abstraction has 1683 states and 2645 transitions. [2025-01-09 09:44:01,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2025-01-09 09:44:01,689 INFO L276 IsEmpty]: Start isEmpty. Operand 1683 states and 2645 transitions. [2025-01-09 09:44:01,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2025-01-09 09:44:01,692 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 09:44:01,693 INFO L218 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 09:44:01,703 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-01-09 09:44:01,897 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,SelfDestructingSolverStorable10 [2025-01-09 09:44:01,897 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 09:44:01,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 09:44:01,897 INFO L85 PathProgramCache]: Analyzing trace with hash -587791600, now seen corresponding path program 1 times [2025-01-09 09:44:01,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 09:44:01,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8052712] [2025-01-09 09:44:01,898 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 09:44:01,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 09:44:01,914 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 484 statements into 1 equivalence classes. [2025-01-09 09:44:01,942 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 484 of 484 statements. [2025-01-09 09:44:01,942 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 09:44:01,942 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 09:44:02,145 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2025-01-09 09:44:02,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 09:44:02,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8052712] [2025-01-09 09:44:02,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8052712] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 09:44:02,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 09:44:02,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 09:44:02,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523746832] [2025-01-09 09:44:02,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 09:44:02,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 09:44:02,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 09:44:02,148 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 09:44:02,148 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-09 09:44:02,148 INFO L87 Difference]: Start difference. First operand 1683 states and 2645 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2025-01-09 09:44:02,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 09:44:02,392 INFO L93 Difference]: Finished difference Result 4406 states and 6928 transitions. [2025-01-09 09:44:02,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 09:44:02,393 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 484 [2025-01-09 09:44:02,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 09:44:02,402 INFO L225 Difference]: With dead ends: 4406 [2025-01-09 09:44:02,403 INFO L226 Difference]: Without dead ends: 2726 [2025-01-09 09:44:02,406 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-09 09:44:02,407 INFO L435 NwaCegarLoop]: 542 mSDtfsCounter, 412 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 09:44:02,407 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [412 Valid, 890 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 09:44:02,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2726 states. [2025-01-09 09:44:02,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2726 to 2724. [2025-01-09 09:44:02,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2724 states, 2257 states have (on average 1.5316792202038103) internal successors, (3457), 2267 states have internal predecessors, (3457), 412 states have call successors, (412), 54 states have call predecessors, (412), 54 states have return successors, (412), 402 states have call predecessors, (412), 412 states have call successors, (412) [2025-01-09 09:44:02,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2724 states to 2724 states and 4281 transitions. [2025-01-09 09:44:02,594 INFO L78 Accepts]: Start accepts. Automaton has 2724 states and 4281 transitions. Word has length 484 [2025-01-09 09:44:02,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 09:44:02,595 INFO L471 AbstractCegarLoop]: Abstraction has 2724 states and 4281 transitions. [2025-01-09 09:44:02,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2025-01-09 09:44:02,595 INFO L276 IsEmpty]: Start isEmpty. Operand 2724 states and 4281 transitions. [2025-01-09 09:44:02,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2025-01-09 09:44:02,599 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 09:44:02,599 INFO L218 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 09:44:02,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-01-09 09:44:02,599 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 09:44:02,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 09:44:02,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1151336104, now seen corresponding path program 1 times [2025-01-09 09:44:02,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 09:44:02,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688324070] [2025-01-09 09:44:02,600 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 09:44:02,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 09:44:02,622 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 486 statements into 1 equivalence classes. [2025-01-09 09:44:02,635 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 486 of 486 statements. [2025-01-09 09:44:02,635 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 09:44:02,635 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 09:44:02,753 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2025-01-09 09:44:02,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 09:44:02,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688324070] [2025-01-09 09:44:02,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688324070] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 09:44:02,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 09:44:02,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 09:44:02,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284106478] [2025-01-09 09:44:02,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 09:44:02,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 09:44:02,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 09:44:02,755 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 09:44:02,755 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 09:44:02,755 INFO L87 Difference]: Start difference. First operand 2724 states and 4281 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2025-01-09 09:44:02,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 09:44:02,927 INFO L93 Difference]: Finished difference Result 5453 states and 8575 transitions. [2025-01-09 09:44:02,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 09:44:02,930 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 486 [2025-01-09 09:44:02,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 09:44:02,941 INFO L225 Difference]: With dead ends: 5453 [2025-01-09 09:44:02,941 INFO L226 Difference]: Without dead ends: 2732 [2025-01-09 09:44:02,945 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 09:44:02,946 INFO L435 NwaCegarLoop]: 376 mSDtfsCounter, 0 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 747 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 [2025-01-09 09:44:02,946 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 747 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 09:44:02,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2732 states. [2025-01-09 09:44:03,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2732 to 2732. [2025-01-09 09:44:03,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2732 states, 2265 states have (on average 1.5298013245033113) internal successors, (3465), 2275 states have internal predecessors, (3465), 412 states have call successors, (412), 54 states have call predecessors, (412), 54 states have return successors, (412), 402 states have call predecessors, (412), 412 states have call successors, (412) [2025-01-09 09:44:03,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2732 states to 2732 states and 4289 transitions. [2025-01-09 09:44:03,234 INFO L78 Accepts]: Start accepts. Automaton has 2732 states and 4289 transitions. Word has length 486 [2025-01-09 09:44:03,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 09:44:03,237 INFO L471 AbstractCegarLoop]: Abstraction has 2732 states and 4289 transitions. [2025-01-09 09:44:03,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2025-01-09 09:44:03,238 INFO L276 IsEmpty]: Start isEmpty. Operand 2732 states and 4289 transitions. [2025-01-09 09:44:03,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2025-01-09 09:44:03,242 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 09:44:03,242 INFO L218 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 09:44:03,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-01-09 09:44:03,243 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 09:44:03,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 09:44:03,243 INFO L85 PathProgramCache]: Analyzing trace with hash -903189610, now seen corresponding path program 1 times [2025-01-09 09:44:03,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 09:44:03,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163731763] [2025-01-09 09:44:03,244 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 09:44:03,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 09:44:03,263 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 486 statements into 1 equivalence classes. [2025-01-09 09:44:03,360 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 486 of 486 statements. [2025-01-09 09:44:03,361 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 09:44:03,361 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 09:44:03,592 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 219 proven. 9 refuted. 0 times theorem prover too weak. 11476 trivial. 0 not checked. [2025-01-09 09:44:03,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 09:44:03,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163731763] [2025-01-09 09:44:03,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163731763] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 09:44:03,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965009145] [2025-01-09 09:44:03,593 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 09:44:03,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 09:44:03,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 09:44:03,599 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) [2025-01-09 09:44:03,604 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 [2025-01-09 09:44:03,764 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 486 statements into 1 equivalence classes. [2025-01-09 09:44:03,856 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 486 of 486 statements. [2025-01-09 09:44:03,856 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 09:44:03,856 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 09:44:03,860 INFO L256 TraceCheckSpWp]: Trace formula consists of 1080 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-09 09:44:03,869 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 09:44:03,964 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 1098 proven. 9 refuted. 0 times theorem prover too weak. 10597 trivial. 0 not checked. [2025-01-09 09:44:03,964 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 09:44:04,230 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 219 proven. 9 refuted. 0 times theorem prover too weak. 11476 trivial. 0 not checked. [2025-01-09 09:44:04,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965009145] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 09:44:04,231 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 09:44:04,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2025-01-09 09:44:04,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613899821] [2025-01-09 09:44:04,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 09:44:04,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-01-09 09:44:04,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 09:44:04,232 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-01-09 09:44:04,233 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2025-01-09 09:44:04,233 INFO L87 Difference]: Start difference. First operand 2732 states and 4289 transitions. Second operand has 9 states, 9 states have (on average 20.77777777777778) internal successors, (187), 9 states have internal predecessors, (187), 4 states have call successors, (83), 2 states have call predecessors, (83), 4 states have return successors, (85), 4 states have call predecessors, (85), 4 states have call successors, (85) [2025-01-09 09:44:04,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 09:44:04,761 INFO L93 Difference]: Finished difference Result 5571 states and 8683 transitions. [2025-01-09 09:44:04,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 09:44:04,762 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 20.77777777777778) internal successors, (187), 9 states have internal predecessors, (187), 4 states have call successors, (83), 2 states have call predecessors, (83), 4 states have return successors, (85), 4 states have call predecessors, (85), 4 states have call successors, (85) Word has length 486 [2025-01-09 09:44:04,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 09:44:04,772 INFO L225 Difference]: With dead ends: 5571 [2025-01-09 09:44:04,772 INFO L226 Difference]: Without dead ends: 2842 [2025-01-09 09:44:04,777 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 979 GetRequests, 969 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=77, Unknown=0, NotChecked=0, Total=132 [2025-01-09 09:44:04,777 INFO L435 NwaCegarLoop]: 295 mSDtfsCounter, 436 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 09:44:04,778 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [509 Valid, 730 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 09:44:04,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2025-01-09 09:44:04,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 2194. [2025-01-09 09:44:04,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2194 states, 1725 states have (on average 1.48231884057971) internal successors, (2557), 1735 states have internal predecessors, (2557), 412 states have call successors, (412), 56 states have call predecessors, (412), 56 states have return successors, (412), 402 states have call predecessors, (412), 412 states have call successors, (412) [2025-01-09 09:44:04,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2194 states to 2194 states and 3381 transitions. [2025-01-09 09:44:04,968 INFO L78 Accepts]: Start accepts. Automaton has 2194 states and 3381 transitions. Word has length 486 [2025-01-09 09:44:04,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 09:44:04,969 INFO L471 AbstractCegarLoop]: Abstraction has 2194 states and 3381 transitions. [2025-01-09 09:44:04,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 20.77777777777778) internal successors, (187), 9 states have internal predecessors, (187), 4 states have call successors, (83), 2 states have call predecessors, (83), 4 states have return successors, (85), 4 states have call predecessors, (85), 4 states have call successors, (85) [2025-01-09 09:44:04,970 INFO L276 IsEmpty]: Start isEmpty. Operand 2194 states and 3381 transitions. [2025-01-09 09:44:04,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2025-01-09 09:44:04,973 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 09:44:04,973 INFO L218 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 09:44:04,985 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-01-09 09:44:05,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-01-09 09:44:05,174 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 09:44:05,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 09:44:05,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1397632980, now seen corresponding path program 1 times [2025-01-09 09:44:05,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 09:44:05,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917192095] [2025-01-09 09:44:05,175 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 09:44:05,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 09:44:05,195 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 486 statements into 1 equivalence classes. [2025-01-09 09:44:05,408 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 486 of 486 statements. [2025-01-09 09:44:05,408 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 09:44:05,408 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 09:44:06,744 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 489 proven. 591 refuted. 0 times theorem prover too weak. 10624 trivial. 0 not checked. [2025-01-09 09:44:06,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 09:44:06,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917192095] [2025-01-09 09:44:06,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917192095] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 09:44:06,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735321098] [2025-01-09 09:44:06,744 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 09:44:06,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 09:44:06,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 09:44:06,747 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) [2025-01-09 09:44:06,752 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 [2025-01-09 09:44:06,892 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 486 statements into 1 equivalence classes. [2025-01-09 09:44:07,013 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 486 of 486 statements. [2025-01-09 09:44:07,013 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 09:44:07,013 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 09:44:07,017 INFO L256 TraceCheckSpWp]: Trace formula consists of 1080 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-01-09 09:44:07,022 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 09:44:09,860 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 6418 proven. 591 refuted. 0 times theorem prover too weak. 4695 trivial. 0 not checked. [2025-01-09 09:44:09,860 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 09:44:11,649 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 402 proven. 492 refuted. 0 times theorem prover too weak. 10810 trivial. 0 not checked. [2025-01-09 09:44:11,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735321098] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 09:44:11,649 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 09:44:11,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 19, 16] total 39 [2025-01-09 09:44:11,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818923136] [2025-01-09 09:44:11,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 09:44:11,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2025-01-09 09:44:11,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 09:44:11,656 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2025-01-09 09:44:11,656 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=326, Invalid=1156, Unknown=0, NotChecked=0, Total=1482 [2025-01-09 09:44:11,656 INFO L87 Difference]: Start difference. First operand 2194 states and 3381 transitions. Second operand has 39 states, 37 states have (on average 5.621621621621622) internal successors, (208), 35 states have internal predecessors, (208), 14 states have call successors, (165), 6 states have call predecessors, (165), 12 states have return successors, (166), 14 states have call predecessors, (166), 14 states have call successors, (166) [2025-01-09 09:44:19,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 09:44:19,823 INFO L93 Difference]: Finished difference Result 11863 states and 17729 transitions. [2025-01-09 09:44:19,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2025-01-09 09:44:19,824 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 37 states have (on average 5.621621621621622) internal successors, (208), 35 states have internal predecessors, (208), 14 states have call successors, (165), 6 states have call predecessors, (165), 12 states have return successors, (166), 14 states have call predecessors, (166), 14 states have call successors, (166) Word has length 486 [2025-01-09 09:44:19,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 09:44:19,857 INFO L225 Difference]: With dead ends: 11863 [2025-01-09 09:44:19,857 INFO L226 Difference]: Without dead ends: 9672 [2025-01-09 09:44:19,868 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1141 GetRequests, 975 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10878 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=5344, Invalid=22712, Unknown=0, NotChecked=0, Total=28056 [2025-01-09 09:44:19,869 INFO L435 NwaCegarLoop]: 409 mSDtfsCounter, 5362 mSDsluCounter, 2392 mSDsCounter, 0 mSdLazyCounter, 3588 mSolverCounterSat, 2096 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5394 SdHoareTripleChecker+Valid, 2801 SdHoareTripleChecker+Invalid, 5684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2096 IncrementalHoareTripleChecker+Valid, 3588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2025-01-09 09:44:19,869 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5394 Valid, 2801 Invalid, 5684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2096 Valid, 3588 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2025-01-09 09:44:19,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9672 states. [2025-01-09 09:44:20,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9672 to 6512. [2025-01-09 09:44:20,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6512 states, 5281 states have (on average 1.4881651202423782) internal successors, (7859), 5305 states have internal predecessors, (7859), 1055 states have call successors, (1055), 175 states have call predecessors, (1055), 175 states have return successors, (1055), 1031 states have call predecessors, (1055), 1055 states have call successors, (1055) [2025-01-09 09:44:20,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6512 states to 6512 states and 9969 transitions. [2025-01-09 09:44:20,523 INFO L78 Accepts]: Start accepts. Automaton has 6512 states and 9969 transitions. Word has length 486 [2025-01-09 09:44:20,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 09:44:20,524 INFO L471 AbstractCegarLoop]: Abstraction has 6512 states and 9969 transitions. [2025-01-09 09:44:20,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 37 states have (on average 5.621621621621622) internal successors, (208), 35 states have internal predecessors, (208), 14 states have call successors, (165), 6 states have call predecessors, (165), 12 states have return successors, (166), 14 states have call predecessors, (166), 14 states have call successors, (166) [2025-01-09 09:44:20,524 INFO L276 IsEmpty]: Start isEmpty. Operand 6512 states and 9969 transitions. [2025-01-09 09:44:20,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2025-01-09 09:44:20,529 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 09:44:20,529 INFO L218 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 09:44:20,540 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-01-09 09:44:20,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-01-09 09:44:20,733 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 09:44:20,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 09:44:20,733 INFO L85 PathProgramCache]: Analyzing trace with hash -903213528, now seen corresponding path program 1 times [2025-01-09 09:44:20,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 09:44:20,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75971200] [2025-01-09 09:44:20,733 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 09:44:20,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 09:44:20,753 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 487 statements into 1 equivalence classes. [2025-01-09 09:44:20,833 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 487 of 487 statements. [2025-01-09 09:44:20,833 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 09:44:20,833 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 09:44:21,453 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2025-01-09 09:44:21,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 09:44:21,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75971200] [2025-01-09 09:44:21,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75971200] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 09:44:21,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 09:44:21,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 09:44:21,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155179123] [2025-01-09 09:44:21,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 09:44:21,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 09:44:21,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 09:44:21,455 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 09:44:21,455 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-01-09 09:44:21,456 INFO L87 Difference]: Start difference. First operand 6512 states and 9969 transitions. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2025-01-09 09:44:24,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 09:44:24,326 INFO L93 Difference]: Finished difference Result 24523 states and 36894 transitions. [2025-01-09 09:44:24,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 09:44:24,326 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 487 [2025-01-09 09:44:24,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 09:44:24,400 INFO L225 Difference]: With dead ends: 24523 [2025-01-09 09:44:24,401 INFO L226 Difference]: Without dead ends: 18014 [2025-01-09 09:44:24,418 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-01-09 09:44:24,419 INFO L435 NwaCegarLoop]: 451 mSDtfsCounter, 806 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 1052 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-09 09:44:24,419 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [806 Valid, 1052 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-09 09:44:24,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18014 states. [2025-01-09 09:44:25,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18014 to 7608. [2025-01-09 09:44:25,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7608 states, 6377 states have (on average 1.5242276932726988) internal successors, (9720), 6401 states have internal predecessors, (9720), 1055 states have call successors, (1055), 175 states have call predecessors, (1055), 175 states have return successors, (1055), 1031 states have call predecessors, (1055), 1055 states have call successors, (1055) [2025-01-09 09:44:25,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7608 states to 7608 states and 11830 transitions. [2025-01-09 09:44:25,348 INFO L78 Accepts]: Start accepts. Automaton has 7608 states and 11830 transitions. Word has length 487 [2025-01-09 09:44:25,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 09:44:25,349 INFO L471 AbstractCegarLoop]: Abstraction has 7608 states and 11830 transitions. [2025-01-09 09:44:25,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2025-01-09 09:44:25,349 INFO L276 IsEmpty]: Start isEmpty. Operand 7608 states and 11830 transitions. [2025-01-09 09:44:25,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2025-01-09 09:44:25,354 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 09:44:25,354 INFO L218 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 09:44:25,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-01-09 09:44:25,355 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 09:44:25,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 09:44:25,355 INFO L85 PathProgramCache]: Analyzing trace with hash -841173914, now seen corresponding path program 1 times [2025-01-09 09:44:25,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 09:44:25,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047924579] [2025-01-09 09:44:25,355 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 09:44:25,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 09:44:25,372 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 487 statements into 1 equivalence classes. [2025-01-09 09:44:25,531 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 487 of 487 statements. [2025-01-09 09:44:25,531 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 09:44:25,531 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 09:44:26,538 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 489 proven. 591 refuted. 0 times theorem prover too weak. 10624 trivial. 0 not checked. [2025-01-09 09:44:26,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 09:44:26,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047924579] [2025-01-09 09:44:26,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047924579] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 09:44:26,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688139053] [2025-01-09 09:44:26,538 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 09:44:26,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 09:44:26,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 09:44:26,543 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 09:44:26,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-01-09 09:44:26,682 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 487 statements into 1 equivalence classes. [2025-01-09 09:44:26,799 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 487 of 487 statements. [2025-01-09 09:44:26,800 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 09:44:26,800 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 09:44:26,808 INFO L256 TraceCheckSpWp]: Trace formula consists of 1081 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-01-09 09:44:26,813 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 09:44:28,553 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 6417 proven. 669 refuted. 0 times theorem prover too weak. 4618 trivial. 0 not checked. [2025-01-09 09:44:28,554 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 09:44:29,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688139053] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 09:44:29,757 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-09 09:44:29,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17] total 23 [2025-01-09 09:44:29,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982360865] [2025-01-09 09:44:29,758 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-09 09:44:29,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-01-09 09:44:29,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 09:44:29,760 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-01-09 09:44:29,761 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=636, Unknown=0, NotChecked=0, Total=756 [2025-01-09 09:44:29,761 INFO L87 Difference]: Start difference. First operand 7608 states and 11830 transitions. Second operand has 23 states, 22 states have (on average 7.409090909090909) internal successors, (163), 21 states have internal predecessors, (163), 9 states have call successors, (121), 5 states have call predecessors, (121), 7 states have return successors, (122), 9 states have call predecessors, (122), 9 states have call successors, (122) [2025-01-09 09:44:34,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 09:44:34,846 INFO L93 Difference]: Finished difference Result 19561 states and 29754 transitions. [2025-01-09 09:44:34,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2025-01-09 09:44:34,847 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 7.409090909090909) internal successors, (163), 21 states have internal predecessors, (163), 9 states have call successors, (121), 5 states have call predecessors, (121), 7 states have return successors, (122), 9 states have call predecessors, (122), 9 states have call successors, (122) Word has length 487 [2025-01-09 09:44:34,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 09:44:34,882 INFO L225 Difference]: With dead ends: 19561 [2025-01-09 09:44:34,882 INFO L226 Difference]: Without dead ends: 11956 [2025-01-09 09:44:34,894 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 841 GetRequests, 758 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2160 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1477, Invalid=5663, Unknown=0, NotChecked=0, Total=7140 [2025-01-09 09:44:34,895 INFO L435 NwaCegarLoop]: 322 mSDtfsCounter, 3410 mSDsluCounter, 1560 mSDsCounter, 0 mSdLazyCounter, 2288 mSolverCounterSat, 984 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3412 SdHoareTripleChecker+Valid, 1882 SdHoareTripleChecker+Invalid, 3272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 984 IncrementalHoareTripleChecker+Valid, 2288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-01-09 09:44:34,896 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3412 Valid, 1882 Invalid, 3272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [984 Valid, 2288 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-01-09 09:44:34,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11956 states. [2025-01-09 09:44:35,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11956 to 7856. [2025-01-09 09:44:35,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7856 states, 6562 states have (on average 1.5202682109113075) internal successors, (9976), 6588 states have internal predecessors, (9976), 1109 states have call successors, (1109), 184 states have call predecessors, (1109), 184 states have return successors, (1109), 1083 states have call predecessors, (1109), 1109 states have call successors, (1109) [2025-01-09 09:44:35,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7856 states to 7856 states and 12194 transitions. [2025-01-09 09:44:35,723 INFO L78 Accepts]: Start accepts. Automaton has 7856 states and 12194 transitions. Word has length 487 [2025-01-09 09:44:35,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 09:44:35,723 INFO L471 AbstractCegarLoop]: Abstraction has 7856 states and 12194 transitions. [2025-01-09 09:44:35,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 7.409090909090909) internal successors, (163), 21 states have internal predecessors, (163), 9 states have call successors, (121), 5 states have call predecessors, (121), 7 states have return successors, (122), 9 states have call predecessors, (122), 9 states have call successors, (122) [2025-01-09 09:44:35,724 INFO L276 IsEmpty]: Start isEmpty. Operand 7856 states and 12194 transitions. [2025-01-09 09:44:35,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2025-01-09 09:44:35,728 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 09:44:35,728 INFO L218 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 09:44:35,738 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-01-09 09:44:35,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 09:44:35,932 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 09:44:35,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 09:44:35,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1073838795, now seen corresponding path program 1 times [2025-01-09 09:44:35,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 09:44:35,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26834292] [2025-01-09 09:44:35,933 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 09:44:35,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 09:44:35,955 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 488 statements into 1 equivalence classes. [2025-01-09 09:44:36,016 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 488 of 488 statements. [2025-01-09 09:44:36,016 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 09:44:36,016 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 09:44:37,830 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2025-01-09 09:44:37,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 09:44:37,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26834292] [2025-01-09 09:44:37,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26834292] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 09:44:37,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 09:44:37,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-01-09 09:44:37,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12341349] [2025-01-09 09:44:37,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 09:44:37,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-01-09 09:44:37,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 09:44:37,831 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-01-09 09:44:37,831 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-01-09 09:44:37,832 INFO L87 Difference]: Start difference. First operand 7856 states and 12194 transitions. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 2 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 2 states have call predecessors, (77), 2 states have call successors, (77) [2025-01-09 09:44:42,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 09:44:42,582 INFO L93 Difference]: Finished difference Result 23180 states and 35267 transitions. [2025-01-09 09:44:42,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 09:44:42,583 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 2 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 2 states have call predecessors, (77), 2 states have call successors, (77) Word has length 488 [2025-01-09 09:44:42,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 09:44:42,670 INFO L225 Difference]: With dead ends: 23180 [2025-01-09 09:44:42,670 INFO L226 Difference]: Without dead ends: 15327 [2025-01-09 09:44:42,692 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2025-01-09 09:44:42,693 INFO L435 NwaCegarLoop]: 435 mSDtfsCounter, 1172 mSDsluCounter, 965 mSDsCounter, 0 mSdLazyCounter, 1359 mSolverCounterSat, 416 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1172 SdHoareTripleChecker+Valid, 1400 SdHoareTripleChecker+Invalid, 1775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 416 IncrementalHoareTripleChecker+Valid, 1359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-01-09 09:44:42,693 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1172 Valid, 1400 Invalid, 1775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [416 Valid, 1359 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-01-09 09:44:42,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15327 states. [2025-01-09 09:44:43,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15327 to 7920. [2025-01-09 09:44:43,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7920 states, 6626 states have (on average 1.5190159975852702) internal successors, (10065), 6652 states have internal predecessors, (10065), 1109 states have call successors, (1109), 184 states have call predecessors, (1109), 184 states have return successors, (1109), 1083 states have call predecessors, (1109), 1109 states have call successors, (1109) [2025-01-09 09:44:43,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7920 states to 7920 states and 12283 transitions. [2025-01-09 09:44:43,769 INFO L78 Accepts]: Start accepts. Automaton has 7920 states and 12283 transitions. Word has length 488 [2025-01-09 09:44:43,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 09:44:43,770 INFO L471 AbstractCegarLoop]: Abstraction has 7920 states and 12283 transitions. [2025-01-09 09:44:43,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 2 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 2 states have call predecessors, (77), 2 states have call successors, (77) [2025-01-09 09:44:43,770 INFO L276 IsEmpty]: Start isEmpty. Operand 7920 states and 12283 transitions. [2025-01-09 09:44:43,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2025-01-09 09:44:43,775 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 09:44:43,775 INFO L218 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 09:44:43,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-01-09 09:44:43,776 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 09:44:43,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 09:44:43,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1135878409, now seen corresponding path program 1 times [2025-01-09 09:44:43,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 09:44:43,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826643115] [2025-01-09 09:44:43,777 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 09:44:43,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 09:44:43,803 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 488 statements into 1 equivalence classes. [2025-01-09 09:44:43,951 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 488 of 488 statements. [2025-01-09 09:44:43,951 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 09:44:43,951 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 09:44:43,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [769591241] [2025-01-09 09:44:43,957 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 09:44:43,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 09:44:43,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 09:44:43,962 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 09:44:43,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-01-09 09:44:44,119 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 488 statements into 1 equivalence classes. [2025-01-09 09:44:44,248 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 488 of 488 statements. [2025-01-09 09:44:44,249 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 09:44:44,249 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 09:44:44,253 INFO L256 TraceCheckSpWp]: Trace formula consists of 1082 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-01-09 09:44:44,259 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 09:44:47,204 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 7115 proven. 468 refuted. 0 times theorem prover too weak. 4121 trivial. 0 not checked. [2025-01-09 09:44:47,204 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 09:44:53,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 09:44:53,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826643115] [2025-01-09 09:44:53,528 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-09 09:44:53,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769591241] [2025-01-09 09:44:53,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769591241] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 09:44:53,528 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-01-09 09:44:53,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2025-01-09 09:44:53,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838728293] [2025-01-09 09:44:53,528 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-01-09 09:44:53,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-01-09 09:44:53,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 09:44:53,529 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-01-09 09:44:53,529 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=558, Unknown=0, NotChecked=0, Total=702 [2025-01-09 09:44:53,530 INFO L87 Difference]: Start difference. First operand 7920 states and 12283 transitions. Second operand has 20 states, 20 states have (on average 6.65) internal successors, (133), 20 states have internal predecessors, (133), 6 states have call successors, (77), 6 states have call predecessors, (77), 10 states have return successors, (77), 6 states have call predecessors, (77), 6 states have call successors, (77) [2025-01-09 09:45:01,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 09:45:01,472 INFO L93 Difference]: Finished difference Result 22855 states and 34803 transitions. [2025-01-09 09:45:01,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2025-01-09 09:45:01,473 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.65) internal successors, (133), 20 states have internal predecessors, (133), 6 states have call successors, (77), 6 states have call predecessors, (77), 10 states have return successors, (77), 6 states have call predecessors, (77), 6 states have call successors, (77) Word has length 488 [2025-01-09 09:45:01,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 09:45:01,560 INFO L225 Difference]: With dead ends: 22855 [2025-01-09 09:45:01,560 INFO L226 Difference]: Without dead ends: 14938 [2025-01-09 09:45:01,587 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 780 GetRequests, 731 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 501 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=679, Invalid=1871, Unknown=0, NotChecked=0, Total=2550 [2025-01-09 09:45:01,588 INFO L435 NwaCegarLoop]: 436 mSDtfsCounter, 1739 mSDsluCounter, 2601 mSDsCounter, 0 mSdLazyCounter, 3845 mSolverCounterSat, 494 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1772 SdHoareTripleChecker+Valid, 3037 SdHoareTripleChecker+Invalid, 4339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 494 IncrementalHoareTripleChecker+Valid, 3845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2025-01-09 09:45:01,588 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1772 Valid, 3037 Invalid, 4339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [494 Valid, 3845 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2025-01-09 09:45:01,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14938 states.