./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/standard_maxInArray_ground.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/array-examples/standard_maxInArray_ground.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 418a605fc1323c67278586b967efb51b918569726e40c2a0630b64c1083a6ff9 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-08 22:07:31,728 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-08 22:07:31,765 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-08 22:07:31,769 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-08 22:07:31,769 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-08 22:07:31,784 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-08 22:07:31,784 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-08 22:07:31,784 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-08 22:07:31,785 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-08 22:07:31,785 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-08 22:07:31,785 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-08 22:07:31,785 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-08 22:07:31,785 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-08 22:07:31,785 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-08 22:07:31,785 INFO L153 SettingsManager]: * Use SBE=true [2025-01-08 22:07:31,785 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-08 22:07:31,786 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-08 22:07:31,786 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-08 22:07:31,786 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-08 22:07:31,786 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-08 22:07:31,786 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-08 22:07:31,786 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-08 22:07:31,786 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-08 22:07:31,786 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-08 22:07:31,786 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-08 22:07:31,786 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-08 22:07:31,786 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-08 22:07:31,787 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-08 22:07:31,787 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-08 22:07:31,787 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-08 22:07:31,787 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-08 22:07:31,787 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-08 22:07:31,787 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-08 22:07:31,787 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-08 22:07:31,787 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-08 22:07:31,787 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-08 22:07:31,787 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-08 22:07:31,787 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-08 22:07:31,791 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-08 22:07:31,791 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-08 22:07:31,791 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-08 22:07:31,791 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-08 22:07:31,791 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-08 22:07:31,791 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-08 22:07:31,792 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-08 22:07:31,792 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-08 22:07:31,792 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-08 22:07:31,792 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-08 22:07:31,792 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 -> 418a605fc1323c67278586b967efb51b918569726e40c2a0630b64c1083a6ff9 [2025-01-08 22:07:32,017 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-08 22:07:32,025 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-08 22:07:32,027 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-08 22:07:32,029 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-08 22:07:32,029 INFO L274 PluginConnector]: CDTParser initialized [2025-01-08 22:07:32,030 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_maxInArray_ground.i [2025-01-08 22:07:33,163 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a17336bb9/939838ffc3954280af5994e2b2d5e8ac/FLAG3bbd8f34d [2025-01-08 22:07:33,424 INFO L384 CDTParser]: Found 1 translation units. [2025-01-08 22:07:33,424 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-examples/standard_maxInArray_ground.i [2025-01-08 22:07:33,430 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a17336bb9/939838ffc3954280af5994e2b2d5e8ac/FLAG3bbd8f34d [2025-01-08 22:07:33,747 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a17336bb9/939838ffc3954280af5994e2b2d5e8ac [2025-01-08 22:07:33,749 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-08 22:07:33,749 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-08 22:07:33,750 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-08 22:07:33,750 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-08 22:07:33,753 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-08 22:07:33,754 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.01 10:07:33" (1/1) ... [2025-01-08 22:07:33,754 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63171e29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:07:33, skipping insertion in model container [2025-01-08 22:07:33,754 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.01 10:07:33" (1/1) ... [2025-01-08 22:07:33,764 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-08 22:07:33,840 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-examples/standard_maxInArray_ground.i[819,832] [2025-01-08 22:07:33,850 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-08 22:07:33,856 INFO L200 MainTranslator]: Completed pre-run [2025-01-08 22:07:33,862 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-examples/standard_maxInArray_ground.i[819,832] [2025-01-08 22:07:33,866 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-08 22:07:33,876 INFO L204 MainTranslator]: Completed translation [2025-01-08 22:07:33,877 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:07:33 WrapperNode [2025-01-08 22:07:33,877 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-08 22:07:33,878 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-08 22:07:33,878 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-08 22:07:33,879 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-08 22:07:33,883 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:07:33" (1/1) ... [2025-01-08 22:07:33,889 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:07:33" (1/1) ... [2025-01-08 22:07:33,900 INFO L138 Inliner]: procedures = 16, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 50 [2025-01-08 22:07:33,900 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-08 22:07:33,901 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-08 22:07:33,901 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-08 22:07:33,901 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-08 22:07:33,906 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:07:33" (1/1) ... [2025-01-08 22:07:33,906 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:07:33" (1/1) ... [2025-01-08 22:07:33,907 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:07:33" (1/1) ... [2025-01-08 22:07:33,914 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2025-01-08 22:07:33,915 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:07:33" (1/1) ... [2025-01-08 22:07:33,915 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:07:33" (1/1) ... [2025-01-08 22:07:33,918 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:07:33" (1/1) ... [2025-01-08 22:07:33,918 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:07:33" (1/1) ... [2025-01-08 22:07:33,920 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:07:33" (1/1) ... [2025-01-08 22:07:33,921 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:07:33" (1/1) ... [2025-01-08 22:07:33,921 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:07:33" (1/1) ... [2025-01-08 22:07:33,922 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-08 22:07:33,923 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-08 22:07:33,923 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-08 22:07:33,923 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-08 22:07:33,923 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:07:33" (1/1) ... [2025-01-08 22:07:33,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-08 22:07:33,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:07:33,951 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) [2025-01-08 22:07:33,953 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 [2025-01-08 22:07:33,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-08 22:07:33,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-08 22:07:33,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-08 22:07:33,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-01-08 22:07:33,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-08 22:07:33,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-08 22:07:33,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-08 22:07:33,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-08 22:07:33,971 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-08 22:07:33,971 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-08 22:07:33,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-08 22:07:34,012 INFO L234 CfgBuilder]: Building ICFG [2025-01-08 22:07:34,013 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-08 22:07:34,080 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2025-01-08 22:07:34,080 INFO L283 CfgBuilder]: Performing block encoding [2025-01-08 22:07:34,085 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-08 22:07:34,086 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-08 22:07:34,086 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.01 10:07:34 BoogieIcfgContainer [2025-01-08 22:07:34,086 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-08 22:07:34,087 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-08 22:07:34,088 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-08 22:07:34,091 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-08 22:07:34,091 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.01 10:07:33" (1/3) ... [2025-01-08 22:07:34,092 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7698399f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.01 10:07:34, skipping insertion in model container [2025-01-08 22:07:34,092 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:07:33" (2/3) ... [2025-01-08 22:07:34,092 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7698399f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.01 10:07:34, skipping insertion in model container [2025-01-08 22:07:34,092 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.01 10:07:34" (3/3) ... [2025-01-08 22:07:34,093 INFO L128 eAbstractionObserver]: Analyzing ICFG standard_maxInArray_ground.i [2025-01-08 22:07:34,104 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-08 22:07:34,105 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG standard_maxInArray_ground.i that has 1 procedures, 14 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2025-01-08 22:07:34,137 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-08 22:07:34,144 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;@4dd8e2f9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-08 22:07:34,145 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-08 22:07:34,148 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:07:34,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-01-08 22:07:34,153 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:07:34,153 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:07:34,153 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:07:34,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:07:34,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1808107339, now seen corresponding path program 1 times [2025-01-08 22:07:34,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:07:34,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315789077] [2025-01-08 22:07:34,165 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:07:34,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:07:34,209 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-08 22:07:34,219 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-08 22:07:34,219 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:07:34,219 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:07:34,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:07:34,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:07:34,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315789077] [2025-01-08 22:07:34,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315789077] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-08 22:07:34,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-08 22:07:34,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-08 22:07:34,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421280775] [2025-01-08 22:07:34,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-08 22:07:34,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-08 22:07:34,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:07:34,306 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-08 22:07:34,306 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-08 22:07:34,307 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:07:34,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:07:34,321 INFO L93 Difference]: Finished difference Result 26 states and 34 transitions. [2025-01-08 22:07:34,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-08 22:07:34,322 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-01-08 22:07:34,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:07:34,327 INFO L225 Difference]: With dead ends: 26 [2025-01-08 22:07:34,327 INFO L226 Difference]: Without dead ends: 12 [2025-01-08 22:07:34,329 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 [2025-01-08 22:07:34,331 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:07:34,331 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:07:34,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2025-01-08 22:07:34,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2025-01-08 22:07:34,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:07:34,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 15 transitions. [2025-01-08 22:07:34,351 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 15 transitions. Word has length 7 [2025-01-08 22:07:34,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:07:34,352 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 15 transitions. [2025-01-08 22:07:34,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:07:34,353 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 15 transitions. [2025-01-08 22:07:34,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-01-08 22:07:34,354 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:07:34,354 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:07:34,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-08 22:07:34,355 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:07:34,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:07:34,356 INFO L85 PathProgramCache]: Analyzing trace with hash 147366507, now seen corresponding path program 1 times [2025-01-08 22:07:34,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:07:34,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932707103] [2025-01-08 22:07:34,356 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:07:34,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:07:34,364 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-01-08 22:07:34,371 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-01-08 22:07:34,372 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:07:34,372 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:07:34,434 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:07:34,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:07:34,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932707103] [2025-01-08 22:07:34,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932707103] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:07:34,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756991865] [2025-01-08 22:07:34,434 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:07:34,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:07:34,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:07:34,437 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) [2025-01-08 22:07:34,438 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 [2025-01-08 22:07:34,476 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-01-08 22:07:34,485 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-01-08 22:07:34,485 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:07:34,486 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:07:34,487 INFO L256 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-01-08 22:07:34,491 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:07:34,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:07:34,506 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-08 22:07:34,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756991865] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-08 22:07:34,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-08 22:07:34,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-01-08 22:07:34,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608312103] [2025-01-08 22:07:34,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-08 22:07:34,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-08 22:07:34,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:07:34,508 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-08 22:07:34,508 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-08 22:07:34,509 INFO L87 Difference]: Start difference. First operand 12 states and 15 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:07:34,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:07:34,524 INFO L93 Difference]: Finished difference Result 20 states and 25 transitions. [2025-01-08 22:07:34,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-08 22:07:34,525 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-01-08 22:07:34,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:07:34,525 INFO L225 Difference]: With dead ends: 20 [2025-01-08 22:07:34,525 INFO L226 Difference]: Without dead ends: 15 [2025-01-08 22:07:34,525 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-08 22:07:34,526 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 3 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:07:34,526 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 19 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:07:34,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2025-01-08 22:07:34,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 13. [2025-01-08 22:07:34,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:07:34,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2025-01-08 22:07:34,528 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 8 [2025-01-08 22:07:34,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:07:34,528 INFO L471 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2025-01-08 22:07:34,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:07:34,528 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2025-01-08 22:07:34,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-01-08 22:07:34,528 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:07:34,528 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:07:34,536 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-08 22:07:34,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:07:34,733 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:07:34,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:07:34,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1103846895, now seen corresponding path program 1 times [2025-01-08 22:07:34,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:07:34,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767580371] [2025-01-08 22:07:34,734 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:07:34,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:07:34,740 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-01-08 22:07:34,745 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-08 22:07:34,745 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:07:34,745 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:07:34,794 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:07:34,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:07:34,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767580371] [2025-01-08 22:07:34,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767580371] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:07:34,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852767951] [2025-01-08 22:07:34,794 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:07:34,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:07:34,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:07:34,796 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) [2025-01-08 22:07:34,798 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 [2025-01-08 22:07:34,823 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-01-08 22:07:34,837 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-08 22:07:34,837 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:07:34,837 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:07:34,838 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-08 22:07:34,839 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:07:34,864 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:07:34,865 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:07:34,891 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:07:34,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852767951] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:07:34,891 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:07:34,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-01-08 22:07:34,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091931900] [2025-01-08 22:07:34,891 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:07:34,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-08 22:07:34,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:07:34,892 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-08 22:07:34,892 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-01-08 22:07:34,892 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:07:34,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:07:34,909 INFO L93 Difference]: Finished difference Result 25 states and 33 transitions. [2025-01-08 22:07:34,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-08 22:07:34,909 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2025-01-08 22:07:34,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:07:34,910 INFO L225 Difference]: With dead ends: 25 [2025-01-08 22:07:34,910 INFO L226 Difference]: Without dead ends: 16 [2025-01-08 22:07:34,910 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-01-08 22:07:34,911 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:07:34,911 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:07:34,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2025-01-08 22:07:34,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2025-01-08 22:07:34,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:07:34,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2025-01-08 22:07:34,918 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 11 [2025-01-08 22:07:34,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:07:34,918 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2025-01-08 22:07:34,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:07:34,918 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2025-01-08 22:07:34,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-01-08 22:07:34,918 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:07:34,918 INFO L218 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:07:34,925 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-08 22:07:35,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:07:35,119 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:07:35,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:07:35,119 INFO L85 PathProgramCache]: Analyzing trace with hash -307821297, now seen corresponding path program 2 times [2025-01-08 22:07:35,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:07:35,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011334900] [2025-01-08 22:07:35,120 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:07:35,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:07:35,130 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-01-08 22:07:35,148 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-01-08 22:07:35,149 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:07:35,149 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:07:35,247 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-01-08 22:07:35,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:07:35,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011334900] [2025-01-08 22:07:35,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011334900] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:07:35,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638405408] [2025-01-08 22:07:35,248 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:07:35,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:07:35,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:07:35,254 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) [2025-01-08 22:07:35,256 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 [2025-01-08 22:07:35,295 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-01-08 22:07:35,313 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-01-08 22:07:35,314 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:07:35,314 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:07:35,314 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-08 22:07:35,316 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:07:35,373 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:07:35,373 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:07:35,443 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:07:35,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638405408] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:07:35,443 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:07:35,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2025-01-08 22:07:35,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071601974] [2025-01-08 22:07:35,443 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:07:35,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-01-08 22:07:35,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:07:35,444 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-01-08 22:07:35,444 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2025-01-08 22:07:35,444 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:07:35,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:07:35,486 INFO L93 Difference]: Finished difference Result 36 states and 50 transitions. [2025-01-08 22:07:35,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-01-08 22:07:35,486 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2025-01-08 22:07:35,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:07:35,487 INFO L225 Difference]: With dead ends: 36 [2025-01-08 22:07:35,487 INFO L226 Difference]: Without dead ends: 27 [2025-01-08 22:07:35,487 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2025-01-08 22:07:35,487 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 4 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:07:35,488 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 56 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:07:35,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2025-01-08 22:07:35,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2025-01-08 22:07:35,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:07:35,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2025-01-08 22:07:35,490 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 14 [2025-01-08 22:07:35,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:07:35,491 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2025-01-08 22:07:35,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:07:35,491 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2025-01-08 22:07:35,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-01-08 22:07:35,491 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:07:35,491 INFO L218 NwaCegarLoop]: trace histogram [10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:07:35,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-01-08 22:07:35,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:07:35,692 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:07:35,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:07:35,693 INFO L85 PathProgramCache]: Analyzing trace with hash -896764725, now seen corresponding path program 3 times [2025-01-08 22:07:35,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:07:35,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638901060] [2025-01-08 22:07:35,693 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:07:35,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:07:35,707 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 23 statements into 6 equivalence classes. [2025-01-08 22:07:35,721 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 17 of 23 statements. [2025-01-08 22:07:35,721 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-01-08 22:07:35,721 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:07:35,774 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2025-01-08 22:07:35,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:07:35,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638901060] [2025-01-08 22:07:35,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638901060] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:07:35,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540012713] [2025-01-08 22:07:35,776 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:07:35,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:07:35,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:07:35,779 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) [2025-01-08 22:07:35,783 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 [2025-01-08 22:07:35,816 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 23 statements into 6 equivalence classes. [2025-01-08 22:07:35,828 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 17 of 23 statements. [2025-01-08 22:07:35,829 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-01-08 22:07:35,829 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:07:35,829 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-08 22:07:35,830 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:07:35,845 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2025-01-08 22:07:35,845 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:07:35,873 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2025-01-08 22:07:35,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540012713] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:07:35,873 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:07:35,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2025-01-08 22:07:35,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122806823] [2025-01-08 22:07:35,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:07:35,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-01-08 22:07:35,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:07:35,874 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-01-08 22:07:35,874 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2025-01-08 22:07:35,874 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:07:35,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:07:35,906 INFO L93 Difference]: Finished difference Result 42 states and 54 transitions. [2025-01-08 22:07:35,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-08 22:07:35,907 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2025-01-08 22:07:35,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:07:35,908 INFO L225 Difference]: With dead ends: 42 [2025-01-08 22:07:35,908 INFO L226 Difference]: Without dead ends: 37 [2025-01-08 22:07:35,909 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2025-01-08 22:07:35,910 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:07:35,910 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 38 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:07:35,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2025-01-08 22:07:35,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2025-01-08 22:07:35,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.25) internal successors, (45), 36 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:07:35,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2025-01-08 22:07:35,917 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 23 [2025-01-08 22:07:35,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:07:35,918 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2025-01-08 22:07:35,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:07:35,918 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2025-01-08 22:07:35,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2025-01-08 22:07:35,918 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:07:35,919 INFO L218 NwaCegarLoop]: trace histogram [10, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:07:35,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-01-08 22:07:36,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:07:36,122 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:07:36,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:07:36,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1866397749, now seen corresponding path program 4 times [2025-01-08 22:07:36,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:07:36,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197221064] [2025-01-08 22:07:36,123 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:07:36,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:07:36,132 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 35 statements into 2 equivalence classes. [2025-01-08 22:07:36,142 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-01-08 22:07:36,144 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-08 22:07:36,144 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:07:36,284 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2025-01-08 22:07:36,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:07:36,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197221064] [2025-01-08 22:07:36,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197221064] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:07:36,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509267320] [2025-01-08 22:07:36,286 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:07:36,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:07:36,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:07:36,288 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) [2025-01-08 22:07:36,301 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 [2025-01-08 22:07:36,335 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 35 statements into 2 equivalence classes. [2025-01-08 22:07:36,353 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-01-08 22:07:36,353 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-08 22:07:36,354 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:07:36,354 INFO L256 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-08 22:07:36,355 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:07:36,381 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2025-01-08 22:07:36,381 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:07:36,472 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2025-01-08 22:07:36,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509267320] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:07:36,472 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:07:36,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2025-01-08 22:07:36,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768980391] [2025-01-08 22:07:36,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:07:36,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-01-08 22:07:36,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:07:36,474 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-01-08 22:07:36,474 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2025-01-08 22:07:36,474 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:07:36,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:07:36,529 INFO L93 Difference]: Finished difference Result 66 states and 90 transitions. [2025-01-08 22:07:36,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-01-08 22:07:36,529 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2025-01-08 22:07:36,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:07:36,530 INFO L225 Difference]: With dead ends: 66 [2025-01-08 22:07:36,530 INFO L226 Difference]: Without dead ends: 61 [2025-01-08 22:07:36,530 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2025-01-08 22:07:36,531 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 34 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:07:36,531 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 52 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:07:36,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2025-01-08 22:07:36,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2025-01-08 22:07:36,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.2833333333333334) internal successors, (77), 60 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:07:36,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 77 transitions. [2025-01-08 22:07:36,537 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 77 transitions. Word has length 35 [2025-01-08 22:07:36,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:07:36,538 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 77 transitions. [2025-01-08 22:07:36,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:07:36,538 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 77 transitions. [2025-01-08 22:07:36,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2025-01-08 22:07:36,538 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:07:36,539 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 10, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:07:36,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-01-08 22:07:36,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:07:36,745 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:07:36,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:07:36,745 INFO L85 PathProgramCache]: Analyzing trace with hash 203206091, now seen corresponding path program 5 times [2025-01-08 22:07:36,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:07:36,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535844705] [2025-01-08 22:07:36,746 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:07:36,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:07:36,759 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 59 statements into 15 equivalence classes. [2025-01-08 22:07:36,794 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) and asserted 59 of 59 statements. [2025-01-08 22:07:36,794 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2025-01-08 22:07:36,794 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:07:37,051 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2025-01-08 22:07:37,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:07:37,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535844705] [2025-01-08 22:07:37,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535844705] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:07:37,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993105384] [2025-01-08 22:07:37,051 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:07:37,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:07:37,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:07:37,053 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) [2025-01-08 22:07:37,055 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 [2025-01-08 22:07:37,093 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 59 statements into 15 equivalence classes. [2025-01-08 22:07:37,182 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) and asserted 59 of 59 statements. [2025-01-08 22:07:37,183 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2025-01-08 22:07:37,183 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:07:37,184 INFO L256 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-08 22:07:37,186 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:07:37,338 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2025-01-08 22:07:37,338 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:07:37,583 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2025-01-08 22:07:37,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993105384] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:07:37,583 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:07:37,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13, 13] total 39 [2025-01-08 22:07:37,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376510778] [2025-01-08 22:07:37,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:07:37,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2025-01-08 22:07:37,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:07:37,585 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2025-01-08 22:07:37,585 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=411, Invalid=1071, Unknown=0, NotChecked=0, Total=1482 [2025-01-08 22:07:37,586 INFO L87 Difference]: Start difference. First operand 61 states and 77 transitions. Second operand has 39 states, 39 states have (on average 2.0) internal successors, (78), 39 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:07:37,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:07:37,700 INFO L93 Difference]: Finished difference Result 126 states and 172 transitions. [2025-01-08 22:07:37,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2025-01-08 22:07:37,700 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.0) internal successors, (78), 39 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2025-01-08 22:07:37,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:07:37,701 INFO L225 Difference]: With dead ends: 126 [2025-01-08 22:07:37,701 INFO L226 Difference]: Without dead ends: 78 [2025-01-08 22:07:37,702 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=411, Invalid=1071, Unknown=0, NotChecked=0, Total=1482 [2025-01-08 22:07:37,702 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 41 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:07:37,702 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 83 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:07:37,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2025-01-08 22:07:37,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2025-01-08 22:07:37,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.24) internal successors, (93), 75 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:07:37,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 93 transitions. [2025-01-08 22:07:37,713 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 93 transitions. Word has length 59 [2025-01-08 22:07:37,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:07:37,713 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 93 transitions. [2025-01-08 22:07:37,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.0) internal successors, (78), 39 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:07:37,714 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 93 transitions. [2025-01-08 22:07:37,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2025-01-08 22:07:37,716 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:07:37,716 INFO L218 NwaCegarLoop]: trace histogram [22, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:07:37,723 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-01-08 22:07:37,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2025-01-08 22:07:37,921 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:07:37,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:07:37,921 INFO L85 PathProgramCache]: Analyzing trace with hash -286081393, now seen corresponding path program 6 times [2025-01-08 22:07:37,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:07:37,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558918621] [2025-01-08 22:07:37,922 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-08 22:07:37,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:07:37,937 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 74 statements into 16 equivalence classes. [2025-01-08 22:07:37,948 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) and asserted 23 of 74 statements. [2025-01-08 22:07:37,949 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2025-01-08 22:07:37,949 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:07:38,183 INFO L134 CoverageAnalysis]: Checked inductivity of 583 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 554 trivial. 0 not checked. [2025-01-08 22:07:38,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:07:38,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558918621] [2025-01-08 22:07:38,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558918621] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:07:38,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249335355] [2025-01-08 22:07:38,184 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-08 22:07:38,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:07:38,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:07:38,186 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) [2025-01-08 22:07:38,187 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 [2025-01-08 22:07:38,236 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 74 statements into 16 equivalence classes. [2025-01-08 22:07:38,249 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) and asserted 23 of 74 statements. [2025-01-08 22:07:38,249 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2025-01-08 22:07:38,249 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:07:38,250 INFO L256 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-08 22:07:38,252 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:07:38,474 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-01-08 22:07:38,484 INFO L134 CoverageAnalysis]: Checked inductivity of 583 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 554 trivial. 0 not checked. [2025-01-08 22:07:38,484 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:07:38,599 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-01-08 22:07:38,599 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 9 [2025-01-08 22:07:38,611 INFO L134 CoverageAnalysis]: Checked inductivity of 583 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 554 trivial. 0 not checked. [2025-01-08 22:07:38,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249335355] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:07:38,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:07:38,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 14 [2025-01-08 22:07:38,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103050139] [2025-01-08 22:07:38,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:07:38,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-01-08 22:07:38,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:07:38,612 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-01-08 22:07:38,613 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2025-01-08 22:07:38,613 INFO L87 Difference]: Start difference. First operand 76 states and 93 transitions. Second operand has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:07:38,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:07:38,704 INFO L93 Difference]: Finished difference Result 127 states and 158 transitions. [2025-01-08 22:07:38,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-08 22:07:38,704 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2025-01-08 22:07:38,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:07:38,706 INFO L225 Difference]: With dead ends: 127 [2025-01-08 22:07:38,706 INFO L226 Difference]: Without dead ends: 125 [2025-01-08 22:07:38,707 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2025-01-08 22:07:38,707 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 28 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:07:38,707 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 63 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:07:38,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2025-01-08 22:07:38,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 119. [2025-01-08 22:07:38,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.271186440677966) internal successors, (150), 118 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:07:38,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 150 transitions. [2025-01-08 22:07:38,722 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 150 transitions. Word has length 74 [2025-01-08 22:07:38,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:07:38,725 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 150 transitions. [2025-01-08 22:07:38,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:07:38,725 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 150 transitions. [2025-01-08 22:07:38,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2025-01-08 22:07:38,726 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:07:38,726 INFO L218 NwaCegarLoop]: trace histogram [22, 15, 15, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:07:38,733 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-01-08 22:07:38,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:07:38,927 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:07:38,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:07:38,928 INFO L85 PathProgramCache]: Analyzing trace with hash -343339695, now seen corresponding path program 1 times [2025-01-08 22:07:38,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:07:38,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571373897] [2025-01-08 22:07:38,928 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:07:38,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:07:38,943 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 74 statements into 1 equivalence classes. [2025-01-08 22:07:38,960 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 74 of 74 statements. [2025-01-08 22:07:38,960 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:07:38,960 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:07:39,460 INFO L134 CoverageAnalysis]: Checked inductivity of 583 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2025-01-08 22:07:39,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:07:39,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571373897] [2025-01-08 22:07:39,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571373897] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:07:39,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249350548] [2025-01-08 22:07:39,461 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:07:39,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:07:39,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:07:39,462 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) [2025-01-08 22:07:39,464 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 [2025-01-08 22:07:39,515 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 74 statements into 1 equivalence classes. [2025-01-08 22:07:39,544 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 74 of 74 statements. [2025-01-08 22:07:39,545 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:07:39,545 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:07:39,549 INFO L256 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-01-08 22:07:39,551 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:07:39,583 INFO L134 CoverageAnalysis]: Checked inductivity of 583 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2025-01-08 22:07:39,584 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:07:40,176 INFO L134 CoverageAnalysis]: Checked inductivity of 583 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2025-01-08 22:07:40,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249350548] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:07:40,176 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:07:40,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2025-01-08 22:07:40,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76583777] [2025-01-08 22:07:40,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:07:40,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2025-01-08 22:07:40,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:07:40,177 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2025-01-08 22:07:40,178 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2025-01-08 22:07:40,178 INFO L87 Difference]: Start difference. First operand 119 states and 150 transitions. Second operand has 49 states, 49 states have (on average 1.2040816326530612) internal successors, (59), 49 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:07:40,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:07:40,229 INFO L93 Difference]: Finished difference Result 237 states and 322 transitions. [2025-01-08 22:07:40,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2025-01-08 22:07:40,230 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.2040816326530612) internal successors, (59), 49 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2025-01-08 22:07:40,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:07:40,231 INFO L225 Difference]: With dead ends: 237 [2025-01-08 22:07:40,231 INFO L226 Difference]: Without dead ends: 143 [2025-01-08 22:07:40,232 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2025-01-08 22:07:40,232 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:07:40,233 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 57 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:07:40,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2025-01-08 22:07:40,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2025-01-08 22:07:40,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.2253521126760563) internal successors, (174), 142 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:07:40,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 174 transitions. [2025-01-08 22:07:40,240 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 174 transitions. Word has length 74 [2025-01-08 22:07:40,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:07:40,240 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 174 transitions. [2025-01-08 22:07:40,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.2040816326530612) internal successors, (59), 49 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:07:40,240 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 174 transitions. [2025-01-08 22:07:40,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2025-01-08 22:07:40,241 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:07:40,241 INFO L218 NwaCegarLoop]: trace histogram [46, 15, 15, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:07:40,248 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-01-08 22:07:40,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:07:40,446 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:07:40,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:07:40,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1450466641, now seen corresponding path program 2 times [2025-01-08 22:07:40,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:07:40,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054419301] [2025-01-08 22:07:40,446 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:07:40,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:07:40,468 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 98 statements into 2 equivalence classes. [2025-01-08 22:07:40,493 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 98 of 98 statements. [2025-01-08 22:07:40,493 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:07:40,493 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:07:41,950 INFO L134 CoverageAnalysis]: Checked inductivity of 1411 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2025-01-08 22:07:41,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:07:41,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054419301] [2025-01-08 22:07:41,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054419301] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:07:41,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054448316] [2025-01-08 22:07:41,950 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:07:41,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:07:41,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:07:41,952 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:07:41,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-01-08 22:07:42,021 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 98 statements into 2 equivalence classes. [2025-01-08 22:07:42,070 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 98 of 98 statements. [2025-01-08 22:07:42,070 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:07:42,070 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:07:42,073 INFO L256 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 48 conjuncts are in the unsatisfiable core [2025-01-08 22:07:42,075 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:07:42,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1411 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2025-01-08 22:07:42,155 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:07:44,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1411 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2025-01-08 22:07:44,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054448316] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:07:44,008 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:07:44,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 97 [2025-01-08 22:07:44,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389158469] [2025-01-08 22:07:44,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:07:44,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2025-01-08 22:07:44,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:07:44,010 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2025-01-08 22:07:44,012 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2025-01-08 22:07:44,012 INFO L87 Difference]: Start difference. First operand 143 states and 174 transitions. Second operand has 97 states, 97 states have (on average 1.1030927835051547) internal successors, (107), 97 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:07:44,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:07:44,109 INFO L93 Difference]: Finished difference Result 285 states and 394 transitions. [2025-01-08 22:07:44,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2025-01-08 22:07:44,109 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 1.1030927835051547) internal successors, (107), 97 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2025-01-08 22:07:44,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:07:44,110 INFO L225 Difference]: With dead ends: 285 [2025-01-08 22:07:44,110 INFO L226 Difference]: Without dead ends: 191 [2025-01-08 22:07:44,112 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2025-01-08 22:07:44,112 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:07:44,113 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 57 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:07:44,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2025-01-08 22:07:44,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2025-01-08 22:07:44,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 190 states have (on average 1.168421052631579) internal successors, (222), 190 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:07:44,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 222 transitions. [2025-01-08 22:07:44,126 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 222 transitions. Word has length 98 [2025-01-08 22:07:44,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:07:44,126 INFO L471 AbstractCegarLoop]: Abstraction has 191 states and 222 transitions. [2025-01-08 22:07:44,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 1.1030927835051547) internal successors, (107), 97 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:07:44,126 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 222 transitions. [2025-01-08 22:07:44,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2025-01-08 22:07:44,127 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:07:44,127 INFO L218 NwaCegarLoop]: trace histogram [94, 15, 15, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:07:44,137 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-01-08 22:07:44,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:07:44,328 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:07:44,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:07:44,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1367014737, now seen corresponding path program 3 times [2025-01-08 22:07:44,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:07:44,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758860404] [2025-01-08 22:07:44,329 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:07:44,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:07:44,358 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 146 statements into 48 equivalence classes. [2025-01-08 22:07:44,364 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 17 of 146 statements. [2025-01-08 22:07:44,364 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-01-08 22:07:44,364 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:07:44,531 INFO L134 CoverageAnalysis]: Checked inductivity of 4795 backedges. 41 proven. 29 refuted. 0 times theorem prover too weak. 4725 trivial. 0 not checked. [2025-01-08 22:07:44,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:07:44,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758860404] [2025-01-08 22:07:44,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758860404] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:07:44,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264670910] [2025-01-08 22:07:44,531 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:07:44,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:07:44,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:07:44,534 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:07:44,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-01-08 22:07:44,639 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 146 statements into 48 equivalence classes. [2025-01-08 22:07:44,649 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 17 of 146 statements. [2025-01-08 22:07:44,650 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-01-08 22:07:44,650 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:07:44,651 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-01-08 22:07:44,656 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:07:44,952 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-01-08 22:07:44,953 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 16 [2025-01-08 22:07:44,967 INFO L134 CoverageAnalysis]: Checked inductivity of 4795 backedges. 41 proven. 29 refuted. 0 times theorem prover too weak. 4725 trivial. 0 not checked. [2025-01-08 22:07:44,967 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:07:45,283 INFO L349 Elim1Store]: treesize reduction 15, result has 40.0 percent of original size [2025-01-08 22:07:45,283 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 20 [2025-01-08 22:07:45,298 INFO L134 CoverageAnalysis]: Checked inductivity of 4795 backedges. 28 proven. 42 refuted. 0 times theorem prover too weak. 4725 trivial. 0 not checked. [2025-01-08 22:07:45,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264670910] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:07:45,299 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:07:45,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 21 [2025-01-08 22:07:45,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175047993] [2025-01-08 22:07:45,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:07:45,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-01-08 22:07:45,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:07:45,300 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-01-08 22:07:45,300 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2025-01-08 22:07:45,300 INFO L87 Difference]: Start difference. First operand 191 states and 222 transitions. Second operand has 21 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 21 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:07:45,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:07:45,475 INFO L93 Difference]: Finished difference Result 215 states and 246 transitions. [2025-01-08 22:07:45,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-01-08 22:07:45,475 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 21 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2025-01-08 22:07:45,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:07:45,477 INFO L225 Difference]: With dead ends: 215 [2025-01-08 22:07:45,477 INFO L226 Difference]: Without dead ends: 213 [2025-01-08 22:07:45,477 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=160, Invalid=596, Unknown=0, NotChecked=0, Total=756 [2025-01-08 22:07:45,477 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 47 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:07:45,478 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 66 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:07:45,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2025-01-08 22:07:45,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 150. [2025-01-08 22:07:45,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 1.1208053691275168) internal successors, (167), 149 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:07:45,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 167 transitions. [2025-01-08 22:07:45,486 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 167 transitions. Word has length 146 [2025-01-08 22:07:45,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:07:45,486 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 167 transitions. [2025-01-08 22:07:45,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 21 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:07:45,486 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 167 transitions. [2025-01-08 22:07:45,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2025-01-08 22:07:45,487 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:07:45,487 INFO L218 NwaCegarLoop]: trace histogram [94, 15, 15, 15, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:07:45,493 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-01-08 22:07:45,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:07:45,688 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:07:45,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:07:45,688 INFO L85 PathProgramCache]: Analyzing trace with hash 540979148, now seen corresponding path program 1 times [2025-01-08 22:07:45,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:07:45,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931583045] [2025-01-08 22:07:45,688 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:07:45,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:07:45,717 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-01-08 22:07:45,752 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-01-08 22:07:45,753 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:07:45,753 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:07:49,649 INFO L134 CoverageAnalysis]: Checked inductivity of 4797 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2025-01-08 22:07:49,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:07:49,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931583045] [2025-01-08 22:07:49,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931583045] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:07:49,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810762892] [2025-01-08 22:07:49,650 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:07:49,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:07:49,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:07:49,651 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:07:49,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-01-08 22:07:49,771 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-01-08 22:07:49,843 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-01-08 22:07:49,843 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:07:49,843 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:07:49,847 INFO L256 TraceCheckSpWp]: Trace formula consists of 995 conjuncts, 96 conjuncts are in the unsatisfiable core [2025-01-08 22:07:49,850 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:07:49,957 INFO L134 CoverageAnalysis]: Checked inductivity of 4797 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2025-01-08 22:07:49,957 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:07:56,810 INFO L134 CoverageAnalysis]: Checked inductivity of 4797 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2025-01-08 22:07:56,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810762892] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:07:56,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:07:56,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97, 97] total 193 [2025-01-08 22:07:56,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070261318] [2025-01-08 22:07:56,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:07:56,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 193 states [2025-01-08 22:07:56,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:07:56,815 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2025-01-08 22:07:56,821 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2025-01-08 22:07:56,821 INFO L87 Difference]: Start difference. First operand 150 states and 167 transitions. Second operand has 193 states, 193 states have (on average 1.0569948186528497) internal successors, (204), 193 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:07:57,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:07:57,029 INFO L93 Difference]: Finished difference Result 299 states and 428 transitions. [2025-01-08 22:07:57,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2025-01-08 22:07:57,030 INFO L78 Accepts]: Start accepts. Automaton has has 193 states, 193 states have (on average 1.0569948186528497) internal successors, (204), 193 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2025-01-08 22:07:57,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:07:57,031 INFO L225 Difference]: With dead ends: 299 [2025-01-08 22:07:57,031 INFO L226 Difference]: Without dead ends: 246 [2025-01-08 22:07:57,032 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2025-01-08 22:07:57,033 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:07:57,033 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 68 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:07:57,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2025-01-08 22:07:57,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2025-01-08 22:07:57,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 245 states have (on average 1.073469387755102) internal successors, (263), 245 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:07:57,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 263 transitions. [2025-01-08 22:07:57,046 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 263 transitions. Word has length 149 [2025-01-08 22:07:57,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:07:57,047 INFO L471 AbstractCegarLoop]: Abstraction has 246 states and 263 transitions. [2025-01-08 22:07:57,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 193 states, 193 states have (on average 1.0569948186528497) internal successors, (204), 193 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:07:57,047 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 263 transitions. [2025-01-08 22:07:57,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2025-01-08 22:07:57,049 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:07:57,049 INFO L218 NwaCegarLoop]: trace histogram [190, 15, 15, 15, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:07:57,056 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-01-08 22:07:57,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-01-08 22:07:57,250 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:07:57,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:07:57,250 INFO L85 PathProgramCache]: Analyzing trace with hash -479629364, now seen corresponding path program 2 times [2025-01-08 22:07:57,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:07:57,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831082378] [2025-01-08 22:07:57,250 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:07:57,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:07:57,300 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 245 statements into 2 equivalence classes. [2025-01-08 22:07:57,408 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 245 of 245 statements. [2025-01-08 22:07:57,408 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:07:57,408 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:08:10,866 INFO L134 CoverageAnalysis]: Checked inductivity of 18477 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2025-01-08 22:08:10,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:08:10,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831082378] [2025-01-08 22:08:10,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831082378] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:08:10,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702464887] [2025-01-08 22:08:10,867 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:08:10,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:08:10,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:08:10,868 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:08:10,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-01-08 22:08:11,070 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 245 statements into 2 equivalence classes. [2025-01-08 22:08:11,216 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 245 of 245 statements. [2025-01-08 22:08:11,216 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:08:11,216 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:08:11,224 INFO L256 TraceCheckSpWp]: Trace formula consists of 1859 conjuncts, 192 conjuncts are in the unsatisfiable core [2025-01-08 22:08:11,228 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:08:11,444 INFO L134 CoverageAnalysis]: Checked inductivity of 18477 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2025-01-08 22:08:11,444 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:08:37,908 INFO L134 CoverageAnalysis]: Checked inductivity of 18477 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2025-01-08 22:08:37,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702464887] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:08:37,908 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:08:37,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [193, 193, 193] total 385 [2025-01-08 22:08:37,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137097019] [2025-01-08 22:08:37,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:08:37,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 385 states [2025-01-08 22:08:37,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:08:37,918 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 385 interpolants. [2025-01-08 22:08:37,922 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73920, Invalid=73920, Unknown=0, NotChecked=0, Total=147840 [2025-01-08 22:08:37,923 INFO L87 Difference]: Start difference. First operand 246 states and 263 transitions. Second operand has 385 states, 385 states have (on average 1.0285714285714285) internal successors, (396), 385 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:08:39,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:08:39,546 INFO L93 Difference]: Finished difference Result 491 states and 716 transitions. [2025-01-08 22:08:39,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2025-01-08 22:08:39,547 INFO L78 Accepts]: Start accepts. Automaton has has 385 states, 385 states have (on average 1.0285714285714285) internal successors, (396), 385 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 245 [2025-01-08 22:08:39,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:08:39,549 INFO L225 Difference]: With dead ends: 491 [2025-01-08 22:08:39,549 INFO L226 Difference]: Without dead ends: 438 [2025-01-08 22:08:39,553 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 681 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 383 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 760 ImplicationChecksByTransitivity, 35.3s TimeCoverageRelationStatistics Valid=73920, Invalid=73920, Unknown=0, NotChecked=0, Total=147840 [2025-01-08 22:08:39,554 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-08 22:08:39,554 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 101 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-08 22:08:39,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2025-01-08 22:08:39,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 438. [2025-01-08 22:08:39,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 437 states have (on average 1.0411899313501145) internal successors, (455), 437 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:08:39,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 455 transitions. [2025-01-08 22:08:39,568 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 455 transitions. Word has length 245 [2025-01-08 22:08:39,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:08:39,568 INFO L471 AbstractCegarLoop]: Abstraction has 438 states and 455 transitions. [2025-01-08 22:08:39,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 385 states, 385 states have (on average 1.0285714285714285) internal successors, (396), 385 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:08:39,569 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 455 transitions. [2025-01-08 22:08:39,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2025-01-08 22:08:39,572 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:08:39,572 INFO L218 NwaCegarLoop]: trace histogram [382, 15, 15, 15, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:08:39,580 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-01-08 22:08:39,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:08:39,773 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:08:39,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:08:39,774 INFO L85 PathProgramCache]: Analyzing trace with hash 918482892, now seen corresponding path program 3 times [2025-01-08 22:08:39,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:08:39,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012022056] [2025-01-08 22:08:39,774 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:08:39,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:08:39,869 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 437 statements into 192 equivalence classes. [2025-01-08 22:08:39,890 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 35 of 437 statements. [2025-01-08 22:08:39,890 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-01-08 22:08:39,890 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:08:39,991 INFO L134 CoverageAnalysis]: Checked inductivity of 73485 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 73413 trivial. 0 not checked. [2025-01-08 22:08:39,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:08:39,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012022056] [2025-01-08 22:08:39,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012022056] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:08:39,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706287711] [2025-01-08 22:08:39,991 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:08:39,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:08:39,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:08:39,993 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:08:40,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-01-08 22:08:40,393 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 437 statements into 192 equivalence classes. [2025-01-08 22:08:40,428 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 35 of 437 statements. [2025-01-08 22:08:40,428 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-01-08 22:08:40,428 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:08:40,431 INFO L256 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-01-08 22:08:40,435 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:08:40,839 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-01-08 22:08:40,851 INFO L134 CoverageAnalysis]: Checked inductivity of 73485 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 73413 trivial. 0 not checked. [2025-01-08 22:08:40,852 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:08:40,940 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-01-08 22:08:40,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 9 [2025-01-08 22:08:40,949 INFO L134 CoverageAnalysis]: Checked inductivity of 73485 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 73413 trivial. 0 not checked. [2025-01-08 22:08:40,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706287711] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:08:40,950 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:08:40,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 19 [2025-01-08 22:08:40,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751825254] [2025-01-08 22:08:40,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:08:40,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-01-08 22:08:40,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:08:40,951 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-01-08 22:08:40,951 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2025-01-08 22:08:40,951 INFO L87 Difference]: Start difference. First operand 438 states and 455 transitions. Second operand has 19 states, 19 states have (on average 2.210526315789474) internal successors, (42), 19 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:08:41,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:08:41,052 INFO L93 Difference]: Finished difference Result 489 states and 519 transitions. [2025-01-08 22:08:41,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-08 22:08:41,052 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.210526315789474) internal successors, (42), 19 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 437 [2025-01-08 22:08:41,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:08:41,054 INFO L225 Difference]: With dead ends: 489 [2025-01-08 22:08:41,054 INFO L226 Difference]: Without dead ends: 487 [2025-01-08 22:08:41,055 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 884 GetRequests, 862 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2025-01-08 22:08:41,055 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 36 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:08:41,055 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 88 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:08:41,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2025-01-08 22:08:41,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 479. [2025-01-08 22:08:41,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 478 states have (on average 1.0648535564853556) internal successors, (509), 478 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:08:41,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 509 transitions. [2025-01-08 22:08:41,073 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 509 transitions. Word has length 437 [2025-01-08 22:08:41,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:08:41,073 INFO L471 AbstractCegarLoop]: Abstraction has 479 states and 509 transitions. [2025-01-08 22:08:41,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.210526315789474) internal successors, (42), 19 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:08:41,073 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 509 transitions. [2025-01-08 22:08:41,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2025-01-08 22:08:41,075 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:08:41,075 INFO L218 NwaCegarLoop]: trace histogram [382, 15, 15, 14, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:08:41,082 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-01-08 22:08:41,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:08:41,279 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:08:41,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:08:41,279 INFO L85 PathProgramCache]: Analyzing trace with hash 238424522, now seen corresponding path program 1 times [2025-01-08 22:08:41,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:08:41,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432615407] [2025-01-08 22:08:41,279 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:08:41,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:08:41,375 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 437 statements into 1 equivalence classes. [2025-01-08 22:08:41,728 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 437 of 437 statements. [2025-01-08 22:08:41,729 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:08:41,729 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat